diff --git a/AconfigFlags.bp b/AconfigFlags.bp
index 45f6570..fdd0505 100644
--- a/AconfigFlags.bp
+++ b/AconfigFlags.bp
@@ -121,6 +121,18 @@
     srcs: ["core/java/android/nfc/*.aconfig"],
 }
 
+cc_aconfig_library {
+    name: "android_nfc_flags_aconfig_c_lib",
+    vendor_available: true,
+    aconfig_declarations: "android.nfc.flags-aconfig",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.nfcservices",
+        "nfc_nci.st21nfc.default",
+    ],
+    defaults: ["framework-minus-apex-aconfig-java-defaults"],
+}
+
 java_aconfig_library {
     name: "android.nfc.flags-aconfig-java",
     aconfig_declarations: "android.nfc.flags-aconfig",
@@ -149,7 +161,7 @@
     name: "android.security.flags-aconfig-java-host",
     aconfig_declarations: "android.security.flags-aconfig",
     host_supported: true,
-    test: true,
+    mode: "test",
     defaults: ["framework-minus-apex-aconfig-java-defaults"],
 }
 
diff --git a/Android.bp b/Android.bp
index 1fb50b6..f5c0b6d 100644
--- a/Android.bp
+++ b/Android.bp
@@ -136,6 +136,9 @@
         // For the generated R.java and Manifest.java
         ":framework-res{.aapt.srcjar}",
 
+        // Java/AIDL sources to be moved out to CrashRecovery module
+        ":framework-crashrecovery-sources",
+
         // etc.
         ":framework-javastream-protos",
         ":statslog-framework-java-gen", // FrameworkStatsLog.java
@@ -396,6 +399,7 @@
         "soundtrigger_middleware-aidl-java",
         "modules-utils-binary-xml",
         "modules-utils-build",
+        "modules-utils-fastxmlserializer",
         "modules-utils-preconditions",
         "modules-utils-statemachine",
         "modules-utils-synchronous-result-receiver",
@@ -409,13 +413,25 @@
     ],
 }
 
+// Collection of non updatable unbundled jars. The list here should match
+// |non_updatable_modules| variable in frameworks/base/api/api.go.
+java_library {
+    name: "framework-non-updatable-unbundled-impl-libs",
+    static_libs: [
+        "framework-location.impl",
+        "framework-nfc.impl",
+    ],
+    sdk_version: "core_platform",
+    installable: false,
+}
+
 // Separated so framework-minus-apex-defaults can be used without the libs dependency
 java_defaults {
     name: "framework-minus-apex-with-libs-defaults",
     defaults: ["framework-minus-apex-defaults"],
     libs: [
         "framework-virtualization.stubs.module_lib",
-        "framework-location.impl",
+        "framework-non-updatable-unbundled-impl-libs",
     ],
 }
 
@@ -446,7 +462,7 @@
     stem: "framework",
     apex_available: ["//apex_available:platform"],
     visibility: [
-        "//frameworks/base/location",
+        "//frameworks/base:__subpackages__",
     ],
     compile_dex: false,
     headers_only: true,
@@ -509,8 +525,8 @@
     installable: false, // this lib is a build-only library
     static_libs: [
         "app-compat-annotations",
-        "framework-location.impl",
         "framework-minus-apex",
+        "framework-non-updatable-unbundled-impl-libs",
         "framework-updatable-stubs-module_libs_api",
     ],
     sdk_version: "core_platform",
diff --git a/INPUT_OWNERS b/INPUT_OWNERS
index e02ba77..44b2f38 100644
--- a/INPUT_OWNERS
+++ b/INPUT_OWNERS
@@ -5,3 +5,5 @@
 prabirmsp@google.com
 svv@google.com
 vdevmurari@google.com
+
+per-file Virtual*=file:/services/companion/java/com/android/server/companion/virtual/OWNERS
diff --git a/THERMAL_OWNERS b/THERMAL_OWNERS
new file mode 100644
index 0000000..b95b7e8
--- /dev/null
+++ b/THERMAL_OWNERS
@@ -0,0 +1,3 @@
+lpy@google.com
+wvw@google.com
+xwxw@google.com
diff --git a/apct-tests/perftests/OWNERS b/apct-tests/perftests/OWNERS
index 4c57e64..8ff3f9b 100644
--- a/apct-tests/perftests/OWNERS
+++ b/apct-tests/perftests/OWNERS
@@ -1,12 +1,11 @@
-balejs@google.com
 carmenjackson@google.com
-cfijalkovich@google.com
 dualli@google.com
 edgararriaga@google.com
-jpakaravoor@google.com
+jdduke@google.com
 jreck@google.com #{LAST_RESORT_SUGGESTION}
 kevinjeon@google.com
 philipcuadra@google.com
+shayba@google.com
 shombert@google.com
 timmurray@google.com
 wessam@google.com
diff --git a/apct-tests/perftests/core/Android.bp b/apct-tests/perftests/core/Android.bp
index 9366ff2d..e1b3241 100644
--- a/apct-tests/perftests/core/Android.bp
+++ b/apct-tests/perftests/core/Android.bp
@@ -66,6 +66,7 @@
     errorprone: {
         javacflags: [
             "-Xep:ReturnValueIgnored:WARN",
+            "-Xep:UnnecessaryStringBuilder:OFF",
         ],
     },
 }
diff --git a/apct-tests/perftests/core/res/drawable-nodpi/fountain_night.jpg b/apct-tests/perftests/core/res/drawable-nodpi/fountain_night.jpg
new file mode 100644
index 0000000..d8b2d75
--- /dev/null
+++ b/apct-tests/perftests/core/res/drawable-nodpi/fountain_night.jpg
Binary files differ
diff --git a/apct-tests/perftests/core/src/android/graphics/perftests/CanvasPerfTest.java b/apct-tests/perftests/core/src/android/graphics/perftests/CanvasPerfTest.java
index f84a0d0..e5a06c9 100644
--- a/apct-tests/perftests/core/src/android/graphics/perftests/CanvasPerfTest.java
+++ b/apct-tests/perftests/core/src/android/graphics/perftests/CanvasPerfTest.java
@@ -16,20 +16,29 @@
 
 package android.graphics.perftests;
 
+import static org.junit.Assert.assertTrue;
+
+import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Bitmap.Config;
 import android.graphics.Color;
+import android.graphics.ImageDecoder;
 import android.graphics.Paint;
 import android.graphics.RecordingCanvas;
 import android.graphics.RenderNode;
 import android.perftests.utils.BenchmarkState;
 import android.perftests.utils.PerfStatusReporter;
 
+import androidx.test.InstrumentationRegistry;
 import androidx.test.filters.LargeTest;
 
+import com.android.perftests.core.R;
+
 import org.junit.Rule;
 import org.junit.Test;
 
+import java.io.IOException;
+
 @LargeTest
 public class CanvasPerfTest {
     @Rule
@@ -93,4 +102,38 @@
             node.end(canvas);
         }
     }
+
+    @Test
+    public void testCreateScaledBitmap() throws IOException {
+        BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
+        final Context context = InstrumentationRegistry.getContext();
+        Bitmap source = ImageDecoder.decodeBitmap(
+                ImageDecoder.createSource(context.getResources(), R.drawable.fountain_night),
+                (decoder, info, source1) -> {
+                    decoder.setAllocator(ImageDecoder.ALLOCATOR_SOFTWARE);
+                });
+        source.setGainmap(null);
+
+        while (state.keepRunning()) {
+            Bitmap.createScaledBitmap(source, source.getWidth() / 2, source.getHeight() / 2, true)
+                    .recycle();
+        }
+    }
+
+    @Test
+    public void testCreateScaledBitmapWithGainmap() throws IOException {
+        BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
+        final Context context = InstrumentationRegistry.getContext();
+        Bitmap source = ImageDecoder.decodeBitmap(
+                ImageDecoder.createSource(context.getResources(), R.drawable.fountain_night),
+                (decoder, info, source1) -> {
+                    decoder.setAllocator(ImageDecoder.ALLOCATOR_SOFTWARE);
+                });
+        assertTrue(source.hasGainmap());
+
+        while (state.keepRunning()) {
+            Bitmap.createScaledBitmap(source, source.getWidth() / 2, source.getHeight() / 2, true)
+                    .recycle();
+        }
+    }
 }
diff --git a/apex/jobscheduler/service/Android.bp b/apex/jobscheduler/service/Android.bp
index a4a0b4b..83ad736 100644
--- a/apex/jobscheduler/service/Android.bp
+++ b/apex/jobscheduler/service/Android.bp
@@ -26,6 +26,10 @@
         "unsupportedappusage",
     ],
 
+    static_libs: [
+        "modules-utils-fastxmlserializer",
+    ],
+
     // Rename classes shared with the framework
     jarjar_rules: "jarjar-rules.txt",
 
diff --git a/apex/jobscheduler/service/java/com/android/server/alarm/Alarm.java b/apex/jobscheduler/service/java/com/android/server/alarm/Alarm.java
index 4d646de..1076465 100644
--- a/apex/jobscheduler/service/java/com/android/server/alarm/Alarm.java
+++ b/apex/jobscheduler/service/java/com/android/server/alarm/Alarm.java
@@ -21,7 +21,7 @@
 import static android.app.AlarmManager.RTC;
 import static android.app.AlarmManager.RTC_WAKEUP;
 
-import static com.android.server.alarm.AlarmManagerService.clampPositive;
+import static com.android.server.alarm.AlarmManagerService.addClampPositive;
 
 import android.app.AlarmManager;
 import android.app.IAlarmListener;
@@ -146,7 +146,7 @@
         mPolicyWhenElapsed[REQUESTER_POLICY_INDEX] = requestedWhenElapsed;
         mWhenElapsed = requestedWhenElapsed;
         this.windowLength = windowLength;
-        mMaxWhenElapsed = clampPositive(requestedWhenElapsed + windowLength);
+        mMaxWhenElapsed = addClampPositive(requestedWhenElapsed, windowLength);
         repeatInterval = interval;
         operation = op;
         listener = rec;
@@ -241,8 +241,8 @@
 
         final long oldMaxWhenElapsed = mMaxWhenElapsed;
         // windowLength should always be >= 0 here.
-        final long maxRequestedElapsed = clampPositive(
-                mPolicyWhenElapsed[REQUESTER_POLICY_INDEX] + windowLength);
+        final long maxRequestedElapsed = addClampPositive(
+                mPolicyWhenElapsed[REQUESTER_POLICY_INDEX], windowLength);
         mMaxWhenElapsed = Math.max(maxRequestedElapsed, mWhenElapsed);
 
         return (oldWhenElapsed != mWhenElapsed) || (oldMaxWhenElapsed != mMaxWhenElapsed);
diff --git a/apex/jobscheduler/service/java/com/android/server/alarm/AlarmManagerService.java b/apex/jobscheduler/service/java/com/android/server/alarm/AlarmManagerService.java
index b96354c..8cc3134 100644
--- a/apex/jobscheduler/service/java/com/android/server/alarm/AlarmManagerService.java
+++ b/apex/jobscheduler/service/java/com/android/server/alarm/AlarmManagerService.java
@@ -1498,15 +1498,15 @@
         if (futurity < MIN_FUZZABLE_INTERVAL) {
             futurity = 0;
         }
-        long maxElapsed = triggerAtTime + (long) (0.75 * futurity);
+        long maxElapsed = addClampPositive(triggerAtTime, (long) (0.75 * futurity));
         // For non-repeating alarms, window is capped at a maximum of one hour from the requested
         // delivery time. This allows for inexact-while-idle alarms to be slightly more reliable.
         // In practice, the delivery window should generally be much smaller than that
         // when the device is not idling.
         if (interval == 0) {
-            maxElapsed = Math.min(maxElapsed, triggerAtTime + INTERVAL_HOUR);
+            maxElapsed = Math.min(maxElapsed, addClampPositive(triggerAtTime, INTERVAL_HOUR));
         }
-        return clampPositive(maxElapsed);
+        return maxElapsed;
     }
 
     // The RTC clock has moved arbitrarily, so we need to recalculate all the RTC alarm deliveries.
@@ -1593,6 +1593,18 @@
         return (val >= 0) ? val : Long.MAX_VALUE;
     }
 
+    static long addClampPositive(long val1, long val2) {
+        long val = val1 + val2;
+        if (val >= 0) {
+            return val;
+        } else if (val1 >= 0 && val2 >= 0) {
+            /* Both are +ve, so overflow happened. */
+            return Long.MAX_VALUE;
+        } else {
+            return 0;
+        }
+    }
+
     /**
      * Sends alarms that were blocked due to user applied background restrictions - either because
      * the user lifted those or the uid came to foreground.
diff --git a/api/Android.bp b/api/Android.bp
index 15b10a6..68babc3 100644
--- a/api/Android.bp
+++ b/api/Android.bp
@@ -83,14 +83,15 @@
         "framework-configinfrastructure",
         "framework-connectivity",
         "framework-connectivity-t",
-        "framework-crashrecovery",
         "framework-devicelock",
         "framework-graphics",
         "framework-healthfitness",
         "framework-location",
         "framework-media",
         "framework-mediaprovider",
+        "framework-nfc",
         "framework-ondevicepersonalization",
+        "framework-pdf",
         "framework-permission",
         "framework-permission-s",
         "framework-scheduling",
@@ -106,7 +107,6 @@
     system_server_classpath: [
         "service-art",
         "service-configinfrastructure",
-        "service-crashrecovery",
         "service-healthfitness",
         "service-media-s",
         "service-permission",
@@ -399,7 +399,10 @@
     stub_only_libs: ["framework-protos"],
     impl_only_libs: ["framework-minus-apex-headers"], // the framework, including hidden API
     impl_library_visibility: ["//frameworks/base"],
-    defaults_visibility: ["//frameworks/base/location"],
+    defaults_visibility: [
+        "//frameworks/base/location",
+        "//frameworks/base/nfc",
+    ],
     plugins: ["error_prone_android_framework"],
     errorprone: {
         javacflags: [
@@ -415,3 +418,49 @@
     "ApiDocs.bp",
     "StubLibraries.bp",
 ]
+
+genrule_defaults {
+    name: "flag-api-mapping-generation-defaults",
+    cmd: "$(location extract-flagged-apis) $(in) $(out)",
+    tools: ["extract-flagged-apis"],
+}
+
+genrule {
+    name: "flag-api-mapping-PublicApi",
+    defaults: ["flag-api-mapping-generation-defaults"],
+    srcs: [":frameworks-base-api-current.txt"],
+    out: ["flag_api_map.textproto"],
+    dist: {
+        targets: ["droid"],
+    },
+}
+
+genrule {
+    name: "flag-api-mapping-SystemApi",
+    defaults: ["flag-api-mapping-generation-defaults"],
+    srcs: [":frameworks-base-api-system-current.txt"],
+    out: ["system_flag_api_map.textproto"],
+    dist: {
+        targets: ["droid"],
+    },
+}
+
+genrule {
+    name: "flag-api-mapping-ModuleLibApi",
+    defaults: ["flag-api-mapping-generation-defaults"],
+    srcs: [":frameworks-base-api-module-lib-current.txt"],
+    out: ["module_lib_flag_api_map.textproto"],
+    dist: {
+        targets: ["droid"],
+    },
+}
+
+genrule {
+    name: "flag-api-mapping-SystemServerApi",
+    defaults: ["flag-api-mapping-generation-defaults"],
+    srcs: [":frameworks-base-api-system-server-current.txt"],
+    out: ["system_server_flag_api_map.textproto"],
+    dist: {
+        targets: ["droid"],
+    },
+}
diff --git a/api/StubLibraries.bp b/api/StubLibraries.bp
index f6f6929..28b2d4b 100644
--- a/api/StubLibraries.bp
+++ b/api/StubLibraries.bp
@@ -635,6 +635,7 @@
     api_contributions: [
         "framework-virtualization.stubs.source.test.api.contribution",
         "framework-location.stubs.source.test.api.contribution",
+        "framework-nfc.stubs.source.test.api.contribution",
     ],
 }
 
diff --git a/api/api.go b/api/api.go
index 8df6dab..71b1e10 100644
--- a/api/api.go
+++ b/api/api.go
@@ -32,6 +32,7 @@
 const i18n = "i18n.module.public.api"
 const virtualization = "framework-virtualization"
 const location = "framework-location"
+const nfc = "framework-nfc"
 
 var core_libraries_modules = []string{art, conscrypt, i18n}
 
@@ -43,7 +44,7 @@
 // APIs.
 // In addition, the modules in this list are allowed to contribute to test APIs
 // stubs.
-var non_updatable_modules = []string{virtualization, location}
+var non_updatable_modules = []string{virtualization, location, nfc}
 
 // The intention behind this soong plugin is to generate a number of "merged"
 // API-related modules that would otherwise require a large amount of very
diff --git a/api/coverage/tools/Android.bp b/api/coverage/tools/Android.bp
new file mode 100644
index 0000000..3e16912
--- /dev/null
+++ b/api/coverage/tools/Android.bp
@@ -0,0 +1,32 @@
+// Copyright (C) 2023 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+java_binary_host {
+    name: "extract-flagged-apis",
+    srcs: ["ExtractFlaggedApis.kt"],
+    main_class: "android.platform.coverage.ExtractFlaggedApisKt",
+    static_libs: [
+        "metalava-signature-reader",
+        "extract_flagged_apis_proto",
+    ],
+}
+
+java_library_host {
+    name: "extract_flagged_apis_proto",
+    srcs: ["extract_flagged_apis.proto"],
+    static_libs: ["libprotobuf-java-full"],
+    proto: {
+        type: "full",
+    },
+}
diff --git a/api/coverage/tools/ExtractFlaggedApis.kt b/api/coverage/tools/ExtractFlaggedApis.kt
new file mode 100644
index 0000000..9ffb704
--- /dev/null
+++ b/api/coverage/tools/ExtractFlaggedApis.kt
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.platform.coverage
+
+import com.android.tools.metalava.model.text.ApiFile
+import java.io.File
+import java.io.FileWriter
+
+/** Usage: extract-flagged-apis <api text file> <output .pb file> */
+fun main(args: Array<String>) {
+    var cb = ApiFile.parseApi(listOf(File(args[0])))
+    val flagToApi = mutableMapOf<String, MutableList<String>>()
+    cb.getPackages()
+        .allClasses()
+        .filter { it.methods().size > 0 }
+        .forEach {
+            for (method in it.methods()) {
+                val flagValue =
+                    method.modifiers
+                        .findAnnotation("android.annotation.FlaggedApi")
+                        ?.findAttribute("value")
+                        ?.value
+                        ?.value()
+                if (flagValue != null && flagValue is String) {
+                    val methodQualifiedName = "${it.qualifiedName()}.${method.name()}"
+                    if (flagToApi.containsKey(flagValue)) {
+                        flagToApi.get(flagValue)?.add(methodQualifiedName)
+                    } else {
+                        flagToApi.put(flagValue, mutableListOf(methodQualifiedName))
+                    }
+                }
+            }
+        }
+    var builder = FlagApiMap.newBuilder()
+    for (flag in flagToApi.keys) {
+        var flaggedApis = FlaggedApis.newBuilder()
+        for (method in flagToApi.get(flag).orEmpty()) {
+            flaggedApis.addFlaggedApi(FlaggedApi.newBuilder().setQualifiedName(method))
+        }
+        builder.putFlagToApi(flag, flaggedApis.build())
+    }
+    val flagApiMap = builder.build()
+    FileWriter(args[1]).use { it.write(flagApiMap.toString()) }
+}
diff --git a/api/coverage/tools/extract_flagged_apis.proto b/api/coverage/tools/extract_flagged_apis.proto
new file mode 100644
index 0000000..a858108
--- /dev/null
+++ b/api/coverage/tools/extract_flagged_apis.proto
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+syntax = "proto3";
+
+package android.platform.coverage;
+
+option java_multiple_files = true;
+
+message FlagApiMap {
+  map<string, FlaggedApis> flag_to_api = 1;
+}
+
+message FlaggedApis {
+  repeated FlaggedApi flagged_api = 1;
+}
+
+message FlaggedApi {
+  string qualified_name = 1;
+}
+
diff --git a/boot/Android.bp b/boot/Android.bp
index b33fab6..8a3d35e 100644
--- a/boot/Android.bp
+++ b/boot/Android.bp
@@ -84,10 +84,6 @@
             module: "com.android.conscrypt-bootclasspath-fragment",
         },
         {
-            apex: "com.android.crashrecovery",
-            module: "com.android.crashrecovery-bootclasspath-fragment",
-        },
-        {
             apex: "com.android.devicelock",
             module: "com.android.devicelock-bootclasspath-fragment",
         },
diff --git a/core/api/current.txt b/core/api/current.txt
index c9cba00..9bcbd72 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -29105,14 +29105,17 @@
   }
 
   public final class NfcAdapter {
+    method @FlaggedApi("android.nfc.nfc_observe_mode") public boolean allowTransaction();
     method public void disableForegroundDispatch(android.app.Activity);
     method public void disableReaderMode(android.app.Activity);
+    method @FlaggedApi("android.nfc.nfc_observe_mode") public boolean disallowTransaction();
     method public void enableForegroundDispatch(android.app.Activity, android.app.PendingIntent, android.content.IntentFilter[], String[][]);
     method public void enableReaderMode(android.app.Activity, android.nfc.NfcAdapter.ReaderCallback, int, android.os.Bundle);
     method public static android.nfc.NfcAdapter getDefaultAdapter(android.content.Context);
     method @Nullable public android.nfc.NfcAntennaInfo getNfcAntennaInfo();
     method public boolean ignore(android.nfc.Tag, int, android.nfc.NfcAdapter.OnTagRemovedListener, android.os.Handler);
     method public boolean isEnabled();
+    method @FlaggedApi("android.nfc.nfc_observe_mode") public boolean isObserveModeSupported();
     method @FlaggedApi("android.nfc.enable_nfc_reader_option") public boolean isReaderOptionEnabled();
     method @FlaggedApi("android.nfc.enable_nfc_reader_option") public boolean isReaderOptionSupported();
     method public boolean isSecureNfcEnabled();
@@ -29220,6 +29223,7 @@
     method public boolean removeAidsForService(android.content.ComponentName, String);
     method @NonNull @RequiresPermission(android.Manifest.permission.NFC) public boolean setOffHostForService(@NonNull android.content.ComponentName, @NonNull String);
     method public boolean setPreferredService(android.app.Activity, android.content.ComponentName);
+    method @FlaggedApi("android.nfc.nfc_observe_mode") public boolean setServiceObserveModeDefault(@NonNull android.content.ComponentName, boolean);
     method public boolean supportsAidPrefixRegistration();
     method @NonNull @RequiresPermission(android.Manifest.permission.NFC) public boolean unsetOffHostForService(@NonNull android.content.ComponentName);
     method public boolean unsetPreferredService(android.app.Activity);
@@ -29239,9 +29243,20 @@
     method public final android.os.IBinder onBind(android.content.Intent);
     method public abstract void onDeactivated(int);
     method public abstract byte[] processCommandApdu(byte[], android.os.Bundle);
+    method @FlaggedApi("android.nfc.nfc_read_polling_loop") public void processPollingFrames(@NonNull java.util.List<android.os.Bundle>);
     method public final void sendResponseApdu(byte[]);
     field public static final int DEACTIVATION_DESELECTED = 1; // 0x1
     field public static final int DEACTIVATION_LINK_LOSS = 0; // 0x0
+    field @FlaggedApi("android.nfc.nfc_read_polling_loop") public static final String POLLING_LOOP_DATA_KEY = "android.nfc.cardemulation.DATA";
+    field @FlaggedApi("android.nfc.nfc_read_polling_loop") public static final String POLLING_LOOP_GAIN_KEY = "android.nfc.cardemulation.GAIN";
+    field @FlaggedApi("android.nfc.nfc_read_polling_loop") public static final String POLLING_LOOP_TIMESTAMP_KEY = "android.nfc.cardemulation.TIMESTAMP";
+    field @FlaggedApi("android.nfc.nfc_read_polling_loop") public static final char POLLING_LOOP_TYPE_A = 65; // 0x0041 'A'
+    field @FlaggedApi("android.nfc.nfc_read_polling_loop") public static final char POLLING_LOOP_TYPE_B = 66; // 0x0042 'B'
+    field @FlaggedApi("android.nfc.nfc_read_polling_loop") public static final char POLLING_LOOP_TYPE_F = 70; // 0x0046 'F'
+    field @FlaggedApi("android.nfc.nfc_read_polling_loop") public static final String POLLING_LOOP_TYPE_KEY = "android.nfc.cardemulation.TYPE";
+    field @FlaggedApi("android.nfc.nfc_read_polling_loop") public static final char POLLING_LOOP_TYPE_OFF = 88; // 0x0058 'X'
+    field @FlaggedApi("android.nfc.nfc_read_polling_loop") public static final char POLLING_LOOP_TYPE_ON = 79; // 0x004f 'O'
+    field @FlaggedApi("android.nfc.nfc_read_polling_loop") public static final char POLLING_LOOP_TYPE_UNKNOWN = 85; // 0x0055 'U'
     field public static final String SERVICE_INTERFACE = "android.nfc.cardemulation.action.HOST_APDU_SERVICE";
     field public static final String SERVICE_META_DATA = "android.nfc.cardemulation.host_apdu_service";
   }
@@ -33221,7 +33236,7 @@
     method public static android.os.Message obtain(android.os.Handler, int, Object);
     method public static android.os.Message obtain(android.os.Handler, int, int, int);
     method public static android.os.Message obtain(android.os.Handler, int, int, int, Object);
-    method public android.os.Bundle peekData();
+    method @Nullable public android.os.Bundle peekData();
     method public void recycle();
     method public void sendToTarget();
     method public void setAsynchronous(boolean);
@@ -39603,7 +39618,7 @@
     method @NonNull public android.security.keystore.KeyGenParameterSpec.Builder setKeyValidityForOriginationEnd(java.util.Date);
     method @NonNull public android.security.keystore.KeyGenParameterSpec.Builder setKeyValidityStart(java.util.Date);
     method @NonNull public android.security.keystore.KeyGenParameterSpec.Builder setMaxUsageCount(int);
-    method @FlaggedApi("MGF1_DIGEST_SETTER") @NonNull public android.security.keystore.KeyGenParameterSpec.Builder setMgf1Digests(@Nullable java.lang.String...);
+    method @FlaggedApi("MGF1_DIGEST_SETTER") @NonNull public android.security.keystore.KeyGenParameterSpec.Builder setMgf1Digests(@NonNull java.lang.String...);
     method @NonNull public android.security.keystore.KeyGenParameterSpec.Builder setRandomizedEncryptionRequired(boolean);
     method @NonNull public android.security.keystore.KeyGenParameterSpec.Builder setSignaturePaddings(java.lang.String...);
     method @NonNull public android.security.keystore.KeyGenParameterSpec.Builder setUnlockedDeviceRequired(boolean);
diff --git a/core/api/system-current.txt b/core/api/system-current.txt
index 3d01011..95dc07f 100644
--- a/core/api/system-current.txt
+++ b/core/api/system-current.txt
@@ -298,7 +298,7 @@
     field public static final String RECOVER_KEYSTORE = "android.permission.RECOVER_KEYSTORE";
     field public static final String REGISTER_CALL_PROVIDER = "android.permission.REGISTER_CALL_PROVIDER";
     field public static final String REGISTER_CONNECTION_MANAGER = "android.permission.REGISTER_CONNECTION_MANAGER";
-    field public static final String REGISTER_NSD_OFFLOAD_ENGINE = "android.permission.REGISTER_NSD_OFFLOAD_ENGINE";
+    field @FlaggedApi("com.android.net.flags.register_nsd_offload_engine") public static final String REGISTER_NSD_OFFLOAD_ENGINE = "android.permission.REGISTER_NSD_OFFLOAD_ENGINE";
     field public static final String REGISTER_SIM_SUBSCRIPTION = "android.permission.REGISTER_SIM_SUBSCRIPTION";
     field public static final String REGISTER_STATS_PULL_ATOM = "android.permission.REGISTER_STATS_PULL_ATOM";
     field public static final String REMOTE_DISPLAY_PROVIDER = "android.permission.REMOTE_DISPLAY_PROVIDER";
diff --git a/core/java/Android.bp b/core/java/Android.bp
index 26b7581..d5acf42 100644
--- a/core/java/Android.bp
+++ b/core/java/Android.bp
@@ -226,7 +226,6 @@
         "com/android/internal/util/ConcurrentUtils.java",
         "com/android/internal/util/DumpUtils.java",
         "com/android/internal/util/FastPrintWriter.java",
-        "com/android/internal/util/FastXmlSerializer.java",
         "com/android/internal/util/FunctionalUtils.java",
         "com/android/internal/util/ParseUtils.java",
         "com/android/internal/util/RingBufferIndices.java",
@@ -414,6 +413,10 @@
     backend: {
         rust: {
             enabled: true,
+            apex_available: [
+                "//apex_available:platform",
+                "com.android.virt",
+            ],
         },
     },
 }
@@ -455,7 +458,6 @@
         "com/android/internal/util/AsyncChannel.java",
         "com/android/internal/util/AsyncService.java",
         "com/android/internal/util/BitwiseInputStream.java",
-        "com/android/internal/util/FastXmlSerializer.java",
         "com/android/internal/util/HexDump.java",
         "com/android/internal/util/IndentingPrintWriter.java",
         "com/android/internal/util/UserIcons.java",
@@ -505,7 +507,6 @@
         "android/net/InterfaceConfiguration.java",
         "android/util/BackupUtils.java",
         "android/util/Rational.java",
-        "com/android/internal/util/FastXmlSerializer.java",
         "com/android/internal/util/HexDump.java",
         "com/android/internal/util/MessageUtils.java",
         "com/android/internal/util/WakeupMessage.java",
diff --git a/core/java/android/app/SystemServiceRegistry.java b/core/java/android/app/SystemServiceRegistry.java
index 4f5da99..325758b 100644
--- a/core/java/android/app/SystemServiceRegistry.java
+++ b/core/java/android/app/SystemServiceRegistry.java
@@ -113,6 +113,7 @@
 import android.hardware.lights.LightsManager;
 import android.hardware.lights.SystemLightsManager;
 import android.hardware.location.ContextHubManager;
+import android.hardware.location.IContextHubService;
 import android.hardware.radio.RadioManager;
 import android.hardware.usb.IUsbManager;
 import android.hardware.usb.UsbManager;
@@ -1125,8 +1126,12 @@
                 new CachedServiceFetcher<ContextHubManager>() {
             @Override
             public ContextHubManager createService(ContextImpl ctx) throws ServiceNotFoundException {
-                return new ContextHubManager(ctx.getOuterContext(),
-                  ctx.mMainThread.getHandler().getLooper());
+                IBinder b = ServiceManager.getService(Context.CONTEXTHUB_SERVICE);
+                if (b == null) {
+                    return null;
+                }
+                return new ContextHubManager(IContextHubService.Stub.asInterface(b),
+                        ctx.mMainThread.getHandler().getLooper());
             }});
 
         registerService(Context.INCIDENT_SERVICE, IncidentManager.class,
diff --git a/core/java/android/hardware/location/ContextHubManager.java b/core/java/android/hardware/location/ContextHubManager.java
index 01ce7b9..481ec72 100644
--- a/core/java/android/hardware/location/ContextHubManager.java
+++ b/core/java/android/hardware/location/ContextHubManager.java
@@ -15,6 +15,8 @@
  */
 package android.hardware.location;
 
+import static java.util.Objects.requireNonNull;
+
 import android.annotation.CallbackExecutor;
 import android.annotation.IntDef;
 import android.annotation.NonNull;
@@ -1111,12 +1113,12 @@
         }
     };
 
-    /** @throws ServiceNotFoundException
-     * @hide */
-    public ContextHubManager(Context context, Looper mainLooper) throws ServiceNotFoundException {
+    /** @hide */
+    public ContextHubManager(@NonNull IContextHubService service, @NonNull Looper mainLooper) {
+        requireNonNull(service, "service cannot be null");
+        requireNonNull(mainLooper, "mainLooper cannot be null");
+        mService = service;
         mMainLooper = mainLooper;
-        mService = IContextHubService.Stub.asInterface(
-                ServiceManager.getServiceOrThrow(Context.CONTEXTHUB_SERVICE));
         try {
             mService.registerCallback(mClientCallback);
         } catch (RemoteException e) {
diff --git a/core/java/android/net/INetworkManagementEventObserver.aidl b/core/java/android/net/INetworkManagementEventObserver.aidl
index 0a6be20..eda80c8 100644
--- a/core/java/android/net/INetworkManagementEventObserver.aidl
+++ b/core/java/android/net/INetworkManagementEventObserver.aidl
@@ -85,14 +85,14 @@
     /**
      * Interface data activity status is changed.
      *
-     * @param transportType The transport type of the data activity change.
+     * @param label label of the data activity change.
      * @param active  True if the interface is actively transmitting data, false if it is idle.
      * @param tsNanos Elapsed realtime in nanos when the state of the network interface changed.
      * @param uid Uid of this event. It represents the uid that was responsible for waking the
      *            radio. For those events that are reported by system itself, not from specific uid,
      *            use -1 for the events which means no uid.
      */
-    void interfaceClassDataActivityChanged(int transportType, boolean active, long tsNanos, int uid);
+    void interfaceClassDataActivityChanged(int label, boolean active, long tsNanos, int uid);
 
     /**
      * Information about available DNS servers has been received.
diff --git a/core/java/android/net/NetworkStack.java b/core/java/android/net/NetworkStack.java
index 19ba6a1..dbb3127 100644
--- a/core/java/android/net/NetworkStack.java
+++ b/core/java/android/net/NetworkStack.java
@@ -23,7 +23,6 @@
 import android.os.IBinder;
 import android.os.ServiceManager;
 
-import com.android.net.flags.Flags;
 import com.android.net.module.util.PermissionUtils;
 /**
  * Constants and utilities for client code communicating with the network stack service.
@@ -104,16 +103,4 @@
             final @NonNull String... otherPermissions) {
         PermissionUtils.enforceNetworkStackPermissionOr(context, otherPermissions);
     }
-
-    /**
-     * Get setting of the "set_data_saver_via_cm" flag.
-     *
-     * @hide
-     */
-    // A workaround for aconfig. Currently, aconfig value read from platform and mainline code can
-    // be inconsistent. To avoid the problem, CTS for mainline code can get the flag value by this
-    // method.
-    public static boolean getDataSaverViaCmFlag() {
-        return Flags.setDataSaverViaCm();
-    }
 }
diff --git a/core/java/android/nfc/INfcAdapter.aidl b/core/java/android/nfc/INfcAdapter.aidl
index 0c95c2e..f6beec1 100644
--- a/core/java/android/nfc/INfcAdapter.aidl
+++ b/core/java/android/nfc/INfcAdapter.aidl
@@ -84,4 +84,6 @@
     boolean isReaderOptionSupported();
     @JavaPassthrough(annotation="@android.annotation.RequiresPermission(android.Manifest.permission.WRITE_SECURE_SETTINGS)")
     boolean enableReaderOption(boolean enable);
+    boolean isObserveModeSupported();
+    boolean setObserveMode(boolean enabled);
 }
diff --git a/core/java/android/nfc/INfcCardEmulation.aidl b/core/java/android/nfc/INfcCardEmulation.aidl
index c7b3b2c..191385a 100644
--- a/core/java/android/nfc/INfcCardEmulation.aidl
+++ b/core/java/android/nfc/INfcCardEmulation.aidl
@@ -30,6 +30,7 @@
     boolean isDefaultServiceForAid(int userHandle, in ComponentName service, String aid);
     boolean setDefaultServiceForCategory(int userHandle, in ComponentName service, String category);
     boolean setDefaultForNextTap(int userHandle, in ComponentName service);
+    boolean setServiceObserveModeDefault(int userId, in android.content.ComponentName service, boolean enable);
     boolean registerAidGroupForService(int userHandle, in ComponentName service, in AidGroup aidGroup);
     boolean setOffHostForService(int userHandle, in ComponentName service, in String offHostSecureElement);
     boolean unsetOffHostForService(int userHandle, in ComponentName service);
diff --git a/core/java/android/nfc/NfcAdapter.java b/core/java/android/nfc/NfcAdapter.java
index c897595..98a980f 100644
--- a/core/java/android/nfc/NfcAdapter.java
+++ b/core/java/android/nfc/NfcAdapter.java
@@ -1081,6 +1081,61 @@
         }
     }
 
+
+    /**
+     * Returns whether the device supports observer mode or not. When observe
+     * mode is enabled, the NFC hardware will listen for NFC readers, but not
+     * respond to them. When observe mode is disabled, the NFC hardware will
+     * resoond to the reader and proceed with the transaction.
+     * @return true if the mode is supported, false otherwise.
+     */
+    @FlaggedApi(Flags.FLAG_NFC_OBSERVE_MODE)
+    public boolean isObserveModeSupported() {
+        try {
+            return sService.isObserveModeSupported();
+        } catch (RemoteException e) {
+            attemptDeadServiceRecovery(e);
+            return false;
+        }
+    }
+
+   /**
+    * Disables observe mode to allow the transaction to proceed. See
+    * {@link #isObserveModeSupported()} for a description of observe mode and
+    * use {@link #disallowTransaction()} to enable observe mode and block
+    * transactions again.
+    *
+    * @return boolean indicating success or failure.
+    */
+    @FlaggedApi(Flags.FLAG_NFC_OBSERVE_MODE)
+    public boolean allowTransaction() {
+        try {
+            return sService.setObserveMode(false);
+        } catch (RemoteException e) {
+            attemptDeadServiceRecovery(e);
+            return false;
+        }
+    }
+
+    /**
+    * Signals that the transaction has completed and observe mode may be
+    * reenabled. See {@link #isObserveModeSupported()} for a description of
+    * observe mode and use {@link #allowTransaction()} to disable observe
+    * mode and allow transactions to proceed.
+    *
+    * @return boolean indicating success or failure.
+    */
+
+    @FlaggedApi(Flags.FLAG_NFC_OBSERVE_MODE)
+    public boolean disallowTransaction() {
+        try {
+            return sService.setObserveMode(true);
+        } catch (RemoteException e) {
+            attemptDeadServiceRecovery(e);
+            return false;
+        }
+    }
+
     /**
      * Resumes default polling for the current device state if polling is paused. Calling
      * this while polling is not paused is a no-op.
diff --git a/core/java/android/nfc/cardemulation/ApduServiceInfo.java b/core/java/android/nfc/cardemulation/ApduServiceInfo.java
index 597c948..e331c95 100644
--- a/core/java/android/nfc/cardemulation/ApduServiceInfo.java
+++ b/core/java/android/nfc/cardemulation/ApduServiceInfo.java
@@ -21,6 +21,7 @@
 package android.nfc.cardemulation;
 
 import android.annotation.FlaggedApi;
+import android.compat.annotation.UnsupportedAppUsage;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
@@ -134,8 +135,9 @@
     /**
      * @hide
      */
+    @UnsupportedAppUsage
     public ApduServiceInfo(ResolveInfo info, boolean onHost, String description,
-            List<AidGroup> staticAidGroups, List<AidGroup> dynamicAidGroups,
+            ArrayList<AidGroup> staticAidGroups, ArrayList<AidGroup> dynamicAidGroups,
             boolean requiresUnlock, int bannerResource, int uid,
             String settingsActivityName, String offHost, String staticOffHost) {
         this(info, onHost, description, staticAidGroups, dynamicAidGroups,
@@ -147,7 +149,7 @@
      * @hide
      */
     public ApduServiceInfo(ResolveInfo info, boolean onHost, String description,
-            List<AidGroup> staticAidGroups, List<AidGroup> dynamicAidGroups,
+            ArrayList<AidGroup> staticAidGroups, ArrayList<AidGroup> dynamicAidGroups,
             boolean requiresUnlock, int bannerResource, int uid,
             String settingsActivityName, String offHost, String staticOffHost,
             boolean isEnabled) {
diff --git a/core/java/android/nfc/cardemulation/CardEmulation.java b/core/java/android/nfc/cardemulation/CardEmulation.java
index d048b59..58b6179 100644
--- a/core/java/android/nfc/cardemulation/CardEmulation.java
+++ b/core/java/android/nfc/cardemulation/CardEmulation.java
@@ -328,6 +328,24 @@
             return SELECTION_MODE_ASK_IF_CONFLICT;
         }
     }
+    /**
+     * Sets whether the system should default to observe mode or not when
+     * the service is in the foreground or the default payment service.
+     *
+     * @param service The component name of the service
+     * @param enable Whether the servic should default to observe mode or not
+     * @return whether the change was successful.
+     */
+    @FlaggedApi(Flags.FLAG_NFC_OBSERVE_MODE)
+    public boolean setServiceObserveModeDefault(@NonNull ComponentName service, boolean enable) {
+        try {
+            return sService.setServiceObserveModeDefault(mContext.getUser().getIdentifier(),
+                    service, enable);
+        } catch (RemoteException e) {
+            Log.e(TAG, "Failed to reach CardEmulationService.");
+        }
+        return  false;
+    }
 
     /**
      * Registers a list of AIDs for a specific category for the
diff --git a/core/java/android/nfc/cardemulation/HostApduService.java b/core/java/android/nfc/cardemulation/HostApduService.java
index 55d0e73..7cd2533 100644
--- a/core/java/android/nfc/cardemulation/HostApduService.java
+++ b/core/java/android/nfc/cardemulation/HostApduService.java
@@ -16,11 +16,14 @@
 
 package android.nfc.cardemulation;
 
+import android.annotation.FlaggedApi;
+import android.annotation.NonNull;
 import android.annotation.SdkConstant;
 import android.annotation.SdkConstant.SdkConstantType;
 import android.app.Service;
 import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.nfc.NfcAdapter;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.IBinder;
@@ -29,6 +32,9 @@
 import android.os.RemoteException;
 import android.util.Log;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * <p>HostApduService is a convenience {@link Service} class that can be
  * extended to emulate an NFC card inside an Android
@@ -230,9 +236,99 @@
     /**
      * @hide
      */
+    public static final int MSG_POLLING_LOOP = 4;
+
+    /**
+     * @hide
+     */
     public static final String KEY_DATA = "data";
 
     /**
+     * POLLING_LOOP_TYPE_KEY is the Bundle key for the type of
+     * polling loop frame in the Bundle passed to {@link #processPollingFrames(List)}
+     */
+    @FlaggedApi(android.nfc.Flags.FLAG_NFC_READ_POLLING_LOOP)
+    public static final String POLLING_LOOP_TYPE_KEY = "android.nfc.cardemulation.TYPE";
+
+    /**
+     * POLLING_LOOP_TYPE_A is the value associated with the key
+     * POLLING_LOOP_TYPE  in the Bundle passed to {@link #processPollingFrames(List)}
+     * when the polling loop is for NFC-A.
+     */
+    @FlaggedApi(android.nfc.Flags.FLAG_NFC_READ_POLLING_LOOP)
+    public static final char POLLING_LOOP_TYPE_A = 'A';
+
+    /**
+     * POLLING_LOOP_TYPE_B is the value associated with the key
+     * POLLING_LOOP_TYPE  in the Bundle passed to {@link #processPollingFrames(List)}
+     * when the polling loop is for NFC-B.
+     */
+    @FlaggedApi(android.nfc.Flags.FLAG_NFC_READ_POLLING_LOOP)
+    public static final char POLLING_LOOP_TYPE_B = 'B';
+
+    /**
+     * POLLING_LOOP_TYPE_F is the value associated with the key
+     * POLLING_LOOP_TYPE  in the Bundle passed to {@link #processPollingFrames(List)}
+     * when the polling loop is for NFC-F.
+     */
+    @FlaggedApi(android.nfc.Flags.FLAG_NFC_READ_POLLING_LOOP)
+    public static final char POLLING_LOOP_TYPE_F = 'F';
+
+    /**
+     * POLLING_LOOP_TYPE_ON is the value associated with the key
+     * POLLING_LOOP_TYPE  in the Bundle passed to {@link #processPollingFrames(List)}
+     * when the polling loop turns on.
+     */
+    @FlaggedApi(android.nfc.Flags.FLAG_NFC_READ_POLLING_LOOP)
+    public static final char POLLING_LOOP_TYPE_ON = 'O';
+
+    /**
+     * POLLING_LOOP_TYPE_OFF is the value associated with the key
+     * POLLING_LOOP_TYPE  in the Bundle passed to {@link #processPollingFrames(List)}
+     * when the polling loop turns off.
+     */
+    @FlaggedApi(android.nfc.Flags.FLAG_NFC_READ_POLLING_LOOP)
+    public static final char POLLING_LOOP_TYPE_OFF = 'X';
+
+    /**
+     * POLLING_LOOP_TYPE_UNKNOWN is the value associated with the key
+     * POLLING_LOOP_TYPE  in the Bundle passed to {@link #processPollingFrames(List)}
+     * when the polling loop frame isn't recognized.
+     */
+    @FlaggedApi(android.nfc.Flags.FLAG_NFC_READ_POLLING_LOOP)
+    public static final char POLLING_LOOP_TYPE_UNKNOWN = 'U';
+
+    /**
+     * POLLING_LOOP_DATA is the Bundle key for the raw data of captured from
+     * the polling loop frame in the Bundle passed to {@link #processPollingFrames(List)}
+     * when the frame type isn't recognized.
+     */
+    @FlaggedApi(android.nfc.Flags.FLAG_NFC_READ_POLLING_LOOP)
+    public static final String POLLING_LOOP_DATA_KEY = "android.nfc.cardemulation.DATA";
+
+    /**
+     * POLLING_LOOP_GAIN_KEY is the Bundle key for the field strength of
+     * the polling loop frame in the Bundle passed to {@link #processPollingFrames(List)}
+     * when the frame type isn't recognized.
+     */
+    @FlaggedApi(android.nfc.Flags.FLAG_NFC_READ_POLLING_LOOP)
+    public static final String POLLING_LOOP_GAIN_KEY = "android.nfc.cardemulation.GAIN";
+
+    /**
+     * POLLING_LOOP_TIMESTAMP_KEY is the Bundle key for the timestamp of
+     * the polling loop frame in the Bundle passed to {@link #processPollingFrames(List)}
+     * when the frame type isn't recognized.
+     */
+    @FlaggedApi(android.nfc.Flags.FLAG_NFC_READ_POLLING_LOOP)
+    public static final String POLLING_LOOP_TIMESTAMP_KEY = "android.nfc.cardemulation.TIMESTAMP";
+
+    /**
+     * @hide
+     */
+    public static final String POLLING_LOOP_FRAMES_BUNDLE_KEY =
+            "android.nfc.cardemulation.POLLING_FRAMES";
+
+    /**
      * Messenger interface to NfcService for sending responses.
      * Only accessed on main thread by the message handler.
      *
@@ -255,6 +351,7 @@
 
                 byte[] apdu = dataBundle.getByteArray(KEY_DATA);
                 if (apdu != null) {
+                        HostApduService has = HostApduService.this;
                     byte[] responseApdu = processCommandApdu(apdu, null);
                     if (responseApdu != null) {
                         if (mNfcService == null) {
@@ -306,6 +403,12 @@
                     Log.e(TAG, "RemoteException calling into NfcService.");
                 }
                 break;
+                case MSG_POLLING_LOOP:
+                    ArrayList<Bundle> frames =
+                            msg.getData().getParcelableArrayList(POLLING_LOOP_FRAMES_BUNDLE_KEY,
+                            Bundle.class);
+                    processPollingFrames(frames);
+                    break;
             default:
                 super.handleMessage(msg);
             }
@@ -366,6 +469,21 @@
         }
     }
 
+    /**
+     * This method is called when a polling frame has been received from a
+     * remote device. If the device is in observe mode, the service should
+     * call {@link NfcAdapter#allowTransaction()} once it is ready to proceed
+     * with the transaction. If the device is not in observe mode, the service
+     * can use this polling frame information to determine how to proceed if it
+     * subsequently has {@link #processCommandApdu(byte[], Bundle)} called. The
+     * service must override this method inorder to receive polling frames,
+     * otherwise the base implementation drops the frame.
+     *
+     * @param frame A description of the polling frame.
+     */
+    @FlaggedApi(android.nfc.Flags.FLAG_NFC_READ_POLLING_LOOP)
+    public void processPollingFrames(@NonNull List<Bundle> frame) {
+    }
 
     /**
      * <p>This method will be called when a command APDU has been received
diff --git a/core/java/android/nfc/flags.aconfig b/core/java/android/nfc/flags.aconfig
index cd50ace..17e0427 100644
--- a/core/java/android/nfc/flags.aconfig
+++ b/core/java/android/nfc/flags.aconfig
@@ -20,3 +20,31 @@
     description: "Flag for NFC user restriction"
     bug: "291187960"
 }
+
+flag {
+    name: "nfc_observe_mode"
+    namespace: "nfc"
+    description: "Enable NFC Observe Mode"
+    bug: "294217286"
+}
+
+flag {
+    name: "nfc_read_polling_loop"
+    namespace: "nfc"
+    description: "Enable NFC Polling Loop Notifications"
+    bug: "294217286"
+}
+
+flag {
+    name: "nfc_observe_mode_st_shim"
+    namespace: "nfc"
+    description: "Enable NFC Observe Mode ST shim"
+    bug: "294217286"
+}
+
+flag {
+    name: "nfc_read_polling_loop_st_shim"
+    namespace: "nfc"
+    description: "Enable NFC Polling Loop Notifications ST shim"
+    bug: "294217286"
+}
diff --git a/core/java/android/os/DeadObjectException.java b/core/java/android/os/DeadObjectException.java
index e06b0f9..61aa222 100644
--- a/core/java/android/os/DeadObjectException.java
+++ b/core/java/android/os/DeadObjectException.java
@@ -19,7 +19,29 @@
 
 /**
  * The object you are calling has died, because its hosting process
- * no longer exists.
+ * no longer exists, or there has been a low-level binder error.
+ *
+ * If you get this exception from a system service, the error is
+ * usually nonrecoverable as the framework will restart. If you
+ * receive this error from an app, at a minimum, you should
+ * recover by resetting the connection. For instance, you should
+ * drop the binder, clean up associated state, and reset your
+ * connection to the service which through this error. In order
+ * to simplify your error recovery paths, you may also want to
+ * "simply" restart your process. However, this may not be an
+ * option if the service you are talking to is unreliable or
+ * crashes frequently.
+ *
+ * If this isn't from a service death and is instead from a
+ * low-level binder error, it will be from:
+ * - a oneway call queue filling up (too many oneway calls)
+ * - from the binder buffer being filled up, so that the transaction
+ *   is rejected.
+ *
+ * In these cases, more information about the error will be
+ * logged. However, there isn't a good way to differentiate
+ * this information at runtime. So, you should handle the
+ * error, as if the service died.
  */
 public class DeadObjectException extends RemoteException {
     public DeadObjectException() {
diff --git a/core/java/android/os/DeadSystemRuntimeException.java b/core/java/android/os/DeadSystemRuntimeException.java
index 1e86924..3b10798 100644
--- a/core/java/android/os/DeadSystemRuntimeException.java
+++ b/core/java/android/os/DeadSystemRuntimeException.java
@@ -18,9 +18,12 @@
 
 /**
  * Exception thrown when a call into system_server resulted in a
- * DeadObjectException, meaning that the system_server has died.  There's
- * nothing apps can do at this point - the system will automatically restart -
- * so there's no point in catching this.
+ * DeadObjectException, meaning that the system_server has died or
+ * experienced a low-level binder error.  There's nothing apps can
+ * do at this point - the system will automatically restart - so
+ * there's no point in catching this.
+ *
+ * See {@link android.os.DeadObjectException}.
  *
  * @hide
  */
diff --git a/core/java/android/os/Message.java b/core/java/android/os/Message.java
index 72fb4ae..cc18482 100644
--- a/core/java/android/os/Message.java
+++ b/core/java/android/os/Message.java
@@ -16,6 +16,7 @@
 
 package android.os;
 
+import android.annotation.Nullable;
 import android.compat.annotation.UnsupportedAppUsage;
 import android.util.TimeUtils;
 import android.util.proto.ProtoOutputStream;
@@ -436,6 +437,7 @@
      * @see #getData()
      * @see #setData(Bundle)
      */
+    @Nullable
     public Bundle peekData() {
         return data;
     }
diff --git a/core/java/android/os/OWNERS b/core/java/android/os/OWNERS
index d9a9266..f2f1bd98 100644
--- a/core/java/android/os/OWNERS
+++ b/core/java/android/os/OWNERS
@@ -83,3 +83,7 @@
 
 # PerformanceHintManager
 per-file PerformanceHintManager.java = file:/ADPF_OWNERS
+
+# IThermal interfaces
+per-file IThermal* = file:/THERMAL_OWNERS
+
diff --git a/core/java/android/os/TEST_MAPPING b/core/java/android/os/TEST_MAPPING
index cc54266..5c4aa4a 100644
--- a/core/java/android/os/TEST_MAPPING
+++ b/core/java/android/os/TEST_MAPPING
@@ -52,8 +52,20 @@
       ],
       "name": "FrameworksServicesTests",
       "options": [
-        { "include-filter": "com.android.server.am.BatteryStatsServiceTest" },
-        { "include-filter": "com.android.server.power.stats.BatteryStatsTests" }
+        { "include-filter": "com.android.server.am.BatteryStatsServiceTest" }
+      ]
+    },
+    {
+      "file_patterns": [
+        "BatteryStats[^/]*\\.java",
+        "BatteryUsageStats[^/]*\\.java",
+        "PowerComponents\\.java",
+        "[^/]*BatteryConsumer[^/]*\\.java"
+      ],
+      "name": "FrameworksServicesTests",
+      "options": [
+        { "include-filter": "com.android.server.power.stats" },
+        { "exclude-filter": "com.android.server.power.stats.BatteryStatsTests" }
       ]
     },
     {
diff --git a/core/java/android/os/storage/OWNERS b/core/java/android/os/storage/OWNERS
index e5b76f6..bf22dcc 100644
--- a/core/java/android/os/storage/OWNERS
+++ b/core/java/android/os/storage/OWNERS
@@ -4,14 +4,16 @@
 
 # Android Storage Team
 alukin@google.com
-corinac@google.com
+ankitavyas@google.com
 dipankarb@google.com
+gargshivam@google.com
 krishang@google.com
+riyaghai@google.com
 sahanas@google.com
 sergeynv@google.com
+shikhamalhotra@google.com
 shubhisaxena@google.com
 tylersaunders@google.com
 
 maco@google.com
 nandana@google.com
-narayan@google.com
diff --git a/core/java/android/os/storage/StorageManager.java b/core/java/android/os/storage/StorageManager.java
index 8e72e13..fa42fed 100644
--- a/core/java/android/os/storage/StorageManager.java
+++ b/core/java/android/os/storage/StorageManager.java
@@ -1729,23 +1729,6 @@
         return RoSystemProperties.CRYPTO_FILE_ENCRYPTED;
     }
 
-    /** {@hide}
-     * @deprecated Use {@link #isFileEncrypted} instead, since emulated FBE is no longer supported.
-     */
-    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
-    @Deprecated
-    public static boolean isFileEncryptedNativeOnly() {
-        return isFileEncrypted();
-    }
-
-    /** {@hide}
-     * @deprecated Use {@link #isFileEncrypted} instead, since emulated FBE is no longer supported.
-     */
-    @Deprecated
-    public static boolean isFileEncryptedNativeOrEmulated() {
-        return isFileEncrypted();
-    }
-
     /** {@hide} */
     public static boolean hasAdoptable() {
         switch (SystemProperties.get(PROP_ADOPTABLE)) {
diff --git a/core/java/android/security/OWNERS b/core/java/android/security/OWNERS
index 33a67ae..533d459 100644
--- a/core/java/android/security/OWNERS
+++ b/core/java/android/security/OWNERS
@@ -8,4 +8,4 @@
 per-file Confirmation*.java = file:/keystore/OWNERS
 per-file FileIntegrityManager.java = file:platform/system/security:/fsverity/OWNERS
 per-file IFileIntegrityService.aidl = file:platform/system/security:/fsverity/OWNERS
-per-file *.aconfig = victorhsieh@google.com
+per-file *.aconfig = victorhsieh@google.com,eranm@google.com
diff --git a/core/java/android/security/flags.aconfig b/core/java/android/security/flags.aconfig
index 5aa3097..e94f23a 100644
--- a/core/java/android/security/flags.aconfig
+++ b/core/java/android/security/flags.aconfig
@@ -8,7 +8,7 @@
 }
 
 flag {
-    name: "fix_unlocked_device_required_keys"
+    name: "fix_unlocked_device_required_keys_v2"
     namespace: "hardware_backed_security"
     description: "Fix bugs in behavior of UnlockedDeviceRequired keystore keys"
     bug: "296464083"
diff --git a/core/java/android/service/notification/OWNERS b/core/java/android/service/notification/OWNERS
index bb0e6ab..cb0b5fa 100644
--- a/core/java/android/service/notification/OWNERS
+++ b/core/java/android/service/notification/OWNERS
@@ -2,6 +2,7 @@
 
 juliacr@google.com
 yurilin@google.com
+matiashe@google.com
 jeffdq@google.com
 dsandler@android.com
 dsandler@google.com
diff --git a/core/java/android/view/View.java b/core/java/android/view/View.java
index 03a6a00..73d18f9 100644
--- a/core/java/android/view/View.java
+++ b/core/java/android/view/View.java
@@ -22444,6 +22444,22 @@
     }
 
     /**
+     * Configure the {@link android.graphics.RenderEffect} to apply to the backdrop contents of this
+     * View. This will apply a visual effect to the result of the backdrop contents of this View
+     * before it is drawn. For example if
+     * {@link RenderEffect#createBlurEffect(float, float, RenderEffect, Shader.TileMode)}
+     * is provided, the previous content behind this View will be blurred before this View is drawn.
+     * @param renderEffect to be applied to the View. Passing null clears the previously configured
+     *                     {@link RenderEffect}
+     * @hide
+     */
+    public void setBackdropRenderEffect(@Nullable RenderEffect renderEffect) {
+        if (mRenderNode.setBackdropRenderEffect(renderEffect)) {
+            invalidateViewProperty(true, true);
+        }
+    }
+
+    /**
      * Updates the {@link Paint} object used with the current layer (used only if the current
      * layer type is not set to {@link #LAYER_TYPE_NONE}). Changed properties of the Paint
      * provided to {@link #setLayerType(int, android.graphics.Paint)} will be used the next time
diff --git a/core/java/com/android/internal/net/VpnProfile.java b/core/java/com/android/internal/net/VpnProfile.java
index 0947ec1..f62094d 100644
--- a/core/java/com/android/internal/net/VpnProfile.java
+++ b/core/java/com/android/internal/net/VpnProfile.java
@@ -618,4 +618,14 @@
     public int describeContents() {
         return 0;
     }
+
+    @Override
+    public VpnProfile clone() {
+        try {
+            return (VpnProfile) super.clone();
+        } catch (CloneNotSupportedException e) {
+            Log.wtf(TAG, e);
+            return null;
+        }
+    }
 }
diff --git a/core/java/com/android/internal/os/ProcessCpuTracker.java b/core/java/com/android/internal/os/ProcessCpuTracker.java
index 70514c3..01c91ba 100644
--- a/core/java/com/android/internal/os/ProcessCpuTracker.java
+++ b/core/java/com/android/internal/os/ProcessCpuTracker.java
@@ -337,6 +337,12 @@
 
     @UnsupportedAppUsage
     public void update() {
+        synchronized (this) {
+            updateLocked();
+        }
+    }
+
+    private void updateLocked() {
         if (DEBUG) Slog.v(TAG, "Update: " + this);
 
         final long nowUptime = SystemClock.uptimeMillis();
diff --git a/core/java/com/android/internal/pm/OWNERS b/core/java/com/android/internal/pm/OWNERS
new file mode 100644
index 0000000..6ef34e2
--- /dev/null
+++ b/core/java/com/android/internal/pm/OWNERS
@@ -0,0 +1,4 @@
+# Bug component: 36137
+
+file:/PACKAGE_MANAGER_OWNERS
+
diff --git a/core/java/com/android/internal/util/FastXmlSerializer.java b/core/java/com/android/internal/util/FastXmlSerializer.java
deleted file mode 100644
index 929c9e8..0000000
--- a/core/java/com/android/internal/util/FastXmlSerializer.java
+++ /dev/null
@@ -1,424 +0,0 @@
-/*
- * Copyright (C) 2006 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.internal.util;
-
-import android.compat.annotation.UnsupportedAppUsage;
-
-import org.xmlpull.v1.XmlSerializer;
-
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.OutputStreamWriter;
-import java.io.UnsupportedEncodingException;
-import java.io.Writer;
-import java.nio.ByteBuffer;
-import java.nio.CharBuffer;
-import java.nio.charset.Charset;
-import java.nio.charset.CharsetEncoder;
-import java.nio.charset.CoderResult;
-import java.nio.charset.CodingErrorAction;
-import java.nio.charset.IllegalCharsetNameException;
-import java.nio.charset.UnsupportedCharsetException;
-
-/**
- * This is a quick and dirty implementation of XmlSerializer that isn't horribly
- * painfully slow like the normal one.  It only does what is needed for the
- * specific XML files being written with it.
- */
-public class FastXmlSerializer implements XmlSerializer {
-    private static final String ESCAPE_TABLE[] = new String[] {
-        "&#0;",   "&#1;",   "&#2;",   "&#3;",  "&#4;",    "&#5;",   "&#6;",  "&#7;",  // 0-7
-        "&#8;",   "&#9;",   "&#10;",  "&#11;", "&#12;",   "&#13;",  "&#14;", "&#15;", // 8-15
-        "&#16;",  "&#17;",  "&#18;",  "&#19;", "&#20;",   "&#21;",  "&#22;", "&#23;", // 16-23
-        "&#24;",  "&#25;",  "&#26;",  "&#27;", "&#28;",   "&#29;",  "&#30;", "&#31;", // 24-31
-        null,     null,     "&quot;", null,     null,     null,     "&amp;",  null,   // 32-39
-        null,     null,     null,     null,     null,     null,     null,     null,   // 40-47
-        null,     null,     null,     null,     null,     null,     null,     null,   // 48-55
-        null,     null,     null,     null,     "&lt;",   null,     "&gt;",   null,   // 56-63
-    };
-
-    private static final int DEFAULT_BUFFER_LEN = 32*1024;
-
-    private static String sSpace = "                                                              ";
-
-    private final int mBufferLen;
-    private final char[] mText;
-    private int mPos;
-
-    private Writer mWriter;
-
-    private OutputStream mOutputStream;
-    private CharsetEncoder mCharset;
-    private ByteBuffer mBytes;
-
-    private boolean mIndent = false;
-    private boolean mInTag;
-
-    private int mNesting = 0;
-    private boolean mLineStart = true;
-
-    @UnsupportedAppUsage
-    public FastXmlSerializer() {
-        this(DEFAULT_BUFFER_LEN);
-    }
-
-    /**
-     * Allocate a FastXmlSerializer with the given internal output buffer size.  If the
-     * size is zero or negative, then the default buffer size will be used.
-     *
-     * @param bufferSize Size in bytes of the in-memory output buffer that the writer will use.
-     */
-    public FastXmlSerializer(int bufferSize) {
-        mBufferLen = (bufferSize > 0) ? bufferSize : DEFAULT_BUFFER_LEN;
-        mText = new char[mBufferLen];
-        mBytes = ByteBuffer.allocate(mBufferLen);
-    }
-
-    private void append(char c) throws IOException {
-        int pos = mPos;
-        if (pos >= (mBufferLen-1)) {
-            flush();
-            pos = mPos;
-        }
-        mText[pos] = c;
-        mPos = pos+1;
-    }
-
-    private void append(String str, int i, final int length) throws IOException {
-        if (length > mBufferLen) {
-            final int end = i + length;
-            while (i < end) {
-                int next = i + mBufferLen;
-                append(str, i, next<end ? mBufferLen : (end-i));
-                i = next;
-            }
-            return;
-        }
-        int pos = mPos;
-        if ((pos+length) > mBufferLen) {
-            flush();
-            pos = mPos;
-        }
-        str.getChars(i, i+length, mText, pos);
-        mPos = pos + length;
-    }
-
-    private void append(char[] buf, int i, final int length) throws IOException {
-        if (length > mBufferLen) {
-            final int end = i + length;
-            while (i < end) {
-                int next = i + mBufferLen;
-                append(buf, i, next<end ? mBufferLen : (end-i));
-                i = next;
-            }
-            return;
-        }
-        int pos = mPos;
-        if ((pos+length) > mBufferLen) {
-            flush();
-            pos = mPos;
-        }
-        System.arraycopy(buf, i, mText, pos, length);
-        mPos = pos + length;
-    }
-
-    private void append(String str) throws IOException {
-        append(str, 0, str.length());
-    }
-
-    private void appendIndent(int indent) throws IOException {
-        indent *= 4;
-        if (indent > sSpace.length()) {
-            indent = sSpace.length();
-        }
-        append(sSpace, 0, indent);
-    }
-
-    private void escapeAndAppendString(final String string) throws IOException {
-        final int N = string.length();
-        final char NE = (char)ESCAPE_TABLE.length;
-        final String[] escapes = ESCAPE_TABLE;
-        int lastPos = 0;
-        int pos;
-        for (pos=0; pos<N; pos++) {
-            char c = string.charAt(pos);
-            if (c >= NE) continue;
-            String escape = escapes[c];
-            if (escape == null) continue;
-            if (lastPos < pos) append(string, lastPos, pos-lastPos);
-            lastPos = pos + 1;
-            append(escape);
-        }
-        if (lastPos < pos) append(string, lastPos, pos-lastPos);
-    }
-
-    private void escapeAndAppendString(char[] buf, int start, int len) throws IOException {
-        final char NE = (char)ESCAPE_TABLE.length;
-        final String[] escapes = ESCAPE_TABLE;
-        int end = start+len;
-        int lastPos = start;
-        int pos;
-        for (pos=start; pos<end; pos++) {
-            char c = buf[pos];
-            if (c >= NE) continue;
-            String escape = escapes[c];
-            if (escape == null) continue;
-            if (lastPos < pos) append(buf, lastPos, pos-lastPos);
-            lastPos = pos + 1;
-            append(escape);
-        }
-        if (lastPos < pos) append(buf, lastPos, pos-lastPos);
-    }
-
-    public XmlSerializer attribute(String namespace, String name, String value) throws IOException,
-            IllegalArgumentException, IllegalStateException {
-        append(' ');
-        if (namespace != null) {
-            append(namespace);
-            append(':');
-        }
-        append(name);
-        append("=\"");
-
-        escapeAndAppendString(value);
-        append('"');
-        mLineStart = false;
-        return this;
-    }
-
-    public void cdsect(String text) throws IOException, IllegalArgumentException,
-            IllegalStateException {
-        throw new UnsupportedOperationException();
-    }
-
-    public void comment(String text) throws IOException, IllegalArgumentException,
-            IllegalStateException {
-        throw new UnsupportedOperationException();
-    }
-
-    public void docdecl(String text) throws IOException, IllegalArgumentException,
-            IllegalStateException {
-        throw new UnsupportedOperationException();
-    }
-
-    public void endDocument() throws IOException, IllegalArgumentException, IllegalStateException {
-        flush();
-    }
-
-    public XmlSerializer endTag(String namespace, String name) throws IOException,
-            IllegalArgumentException, IllegalStateException {
-        mNesting--;
-        if (mInTag) {
-            append(" />\n");
-        } else {
-            if (mIndent && mLineStart) {
-                appendIndent(mNesting);
-            }
-            append("</");
-            if (namespace != null) {
-                append(namespace);
-                append(':');
-            }
-            append(name);
-            append(">\n");
-        }
-        mLineStart = true;
-        mInTag = false;
-        return this;
-    }
-
-    public void entityRef(String text) throws IOException, IllegalArgumentException,
-            IllegalStateException {
-        throw new UnsupportedOperationException();
-    }
-
-    private void flushBytes() throws IOException {
-        int position;
-        if ((position = mBytes.position()) > 0) {
-            mBytes.flip();
-            mOutputStream.write(mBytes.array(), 0, position);
-            mBytes.clear();
-        }
-    }
-
-    public void flush() throws IOException {
-        //Log.i("PackageManager", "flush mPos=" + mPos);
-        if (mPos > 0) {
-            if (mOutputStream != null) {
-                CharBuffer charBuffer = CharBuffer.wrap(mText, 0, mPos);
-                CoderResult result = mCharset.encode(charBuffer, mBytes, true);
-                while (true) {
-                    if (result.isError()) {
-                        throw new IOException(result.toString());
-                    } else if (result.isOverflow()) {
-                        flushBytes();
-                        result = mCharset.encode(charBuffer, mBytes, true);
-                        continue;
-                    }
-                    break;
-                }
-                flushBytes();
-                mOutputStream.flush();
-            } else {
-                mWriter.write(mText, 0, mPos);
-                mWriter.flush();
-            }
-            mPos = 0;
-        }
-    }
-
-    public int getDepth() {
-        throw new UnsupportedOperationException();
-    }
-
-    public boolean getFeature(String name) {
-        throw new UnsupportedOperationException();
-    }
-
-    public String getName() {
-        throw new UnsupportedOperationException();
-    }
-
-    public String getNamespace() {
-        throw new UnsupportedOperationException();
-    }
-
-    public String getPrefix(String namespace, boolean generatePrefix)
-            throws IllegalArgumentException {
-        throw new UnsupportedOperationException();
-    }
-
-    public Object getProperty(String name) {
-        throw new UnsupportedOperationException();
-    }
-
-    public void ignorableWhitespace(String text) throws IOException, IllegalArgumentException,
-            IllegalStateException {
-        throw new UnsupportedOperationException();
-    }
-
-    public void processingInstruction(String text) throws IOException, IllegalArgumentException,
-            IllegalStateException {
-        throw new UnsupportedOperationException();
-    }
-
-    public void setFeature(String name, boolean state) throws IllegalArgumentException,
-            IllegalStateException {
-        if (name.equals("http://xmlpull.org/v1/doc/features.html#indent-output")) {
-            mIndent = true;
-            return;
-        }
-        throw new UnsupportedOperationException();
-    }
-
-    public void setOutput(OutputStream os, String encoding) throws IOException,
-            IllegalArgumentException, IllegalStateException {
-        if (os == null)
-            throw new IllegalArgumentException();
-        if (true) {
-            try {
-                mCharset = Charset.forName(encoding).newEncoder()
-                        .onMalformedInput(CodingErrorAction.REPLACE)
-                        .onUnmappableCharacter(CodingErrorAction.REPLACE);
-            } catch (IllegalCharsetNameException e) {
-                throw (UnsupportedEncodingException) (new UnsupportedEncodingException(
-                        encoding).initCause(e));
-            } catch (UnsupportedCharsetException e) {
-                throw (UnsupportedEncodingException) (new UnsupportedEncodingException(
-                        encoding).initCause(e));
-            }
-            mOutputStream = os;
-        } else {
-            setOutput(
-                encoding == null
-                    ? new OutputStreamWriter(os)
-                    : new OutputStreamWriter(os, encoding));
-        }
-    }
-
-    public void setOutput(Writer writer) throws IOException, IllegalArgumentException,
-            IllegalStateException {
-        mWriter = writer;
-    }
-
-    public void setPrefix(String prefix, String namespace) throws IOException,
-            IllegalArgumentException, IllegalStateException {
-        throw new UnsupportedOperationException();
-    }
-
-    public void setProperty(String name, Object value) throws IllegalArgumentException,
-            IllegalStateException {
-        throw new UnsupportedOperationException();
-    }
-
-    public void startDocument(String encoding, Boolean standalone) throws IOException,
-            IllegalArgumentException, IllegalStateException {
-        append("<?xml version='1.0' encoding='utf-8'");
-        if (standalone != null) {
-            append(" standalone='" + (standalone ? "yes" : "no") + "'");
-        }
-        append(" ?>\n");
-        mLineStart = true;
-    }
-
-    public XmlSerializer startTag(String namespace, String name) throws IOException,
-            IllegalArgumentException, IllegalStateException {
-        if (mInTag) {
-            append(">\n");
-        }
-        if (mIndent) {
-            appendIndent(mNesting);
-        }
-        mNesting++;
-        append('<');
-        if (namespace != null) {
-            append(namespace);
-            append(':');
-        }
-        append(name);
-        mInTag = true;
-        mLineStart = false;
-        return this;
-    }
-
-    public XmlSerializer text(char[] buf, int start, int len) throws IOException,
-            IllegalArgumentException, IllegalStateException {
-        if (mInTag) {
-            append(">");
-            mInTag = false;
-        }
-        escapeAndAppendString(buf, start, len);
-        if (mIndent) {
-            mLineStart = buf[start+len-1] == '\n';
-        }
-        return this;
-    }
-
-    public XmlSerializer text(String text) throws IOException, IllegalArgumentException,
-            IllegalStateException {
-        if (mInTag) {
-            append(">");
-            mInTag = false;
-        }
-        escapeAndAppendString(text);
-        if (mIndent) {
-            mLineStart = text.length() > 0 && (text.charAt(text.length()-1) == '\n');
-        }
-        return this;
-    }
-
-}
diff --git a/core/java/com/android/internal/widget/LockPatternUtils.java b/core/java/com/android/internal/widget/LockPatternUtils.java
index a3e0016..28fd2b4 100644
--- a/core/java/com/android/internal/widget/LockPatternUtils.java
+++ b/core/java/com/android/internal/widget/LockPatternUtils.java
@@ -1936,7 +1936,8 @@
      * If the user is not secured, ie doesn't have an LSKF, then decrypt the user's synthetic
      * password and use it to unlock various cryptographic keys associated with the user.  This
      * primarily includes unlocking the user's credential-encrypted (CE) storage.  It also includes
-     * deriving or decrypting the vendor auth secret and sending it to the AuthSecret HAL.
+     * unlocking the user's Keystore super keys, and deriving or decrypting the vendor auth secret
+     * and sending it to the AuthSecret HAL in order to unlock Secure Element firmware updates.
      * <p>
      * These tasks would normally be done when the LSKF is verified.  This method is where these
      * tasks are done when the user doesn't have an LSKF.  It's called when the user is started.
diff --git a/core/java/com/android/server/net/BaseNetworkObserver.java b/core/java/com/android/server/net/BaseNetworkObserver.java
index 139b88b..61e017d 100644
--- a/core/java/com/android/server/net/BaseNetworkObserver.java
+++ b/core/java/com/android/server/net/BaseNetworkObserver.java
@@ -64,7 +64,7 @@
     }
 
     @Override
-    public void interfaceClassDataActivityChanged(int transportType, boolean active, long tsNanos,
+    public void interfaceClassDataActivityChanged(int label, boolean active, long tsNanos,
             int uid) {
         // default no-op
     }
diff --git a/core/java/com/android/server/pm/OWNERS b/core/java/com/android/server/pm/OWNERS
new file mode 100644
index 0000000..6ef34e2
--- /dev/null
+++ b/core/java/com/android/server/pm/OWNERS
@@ -0,0 +1,4 @@
+# Bug component: 36137
+
+file:/PACKAGE_MANAGER_OWNERS
+
diff --git a/core/jni/Android.bp b/core/jni/Android.bp
index cc2d2e2..05117ce 100644
--- a/core/jni/Android.bp
+++ b/core/jni/Android.bp
@@ -457,9 +457,4 @@
             ],
         },
     },
-
-    // Workaround Clang LTO crash.
-    lto: {
-        never: true,
-    },
 }
diff --git a/core/jni/android_media_AudioRecord.cpp b/core/jni/android_media_AudioRecord.cpp
index b1dab85..f9d00ed 100644
--- a/core/jni/android_media_AudioRecord.cpp
+++ b/core/jni/android_media_AudioRecord.cpp
@@ -212,14 +212,11 @@
             return (jint) AUDIORECORD_ERROR_SETUP_INVALIDFORMAT;
         }
 
-        size_t bytesPerSample = audio_bytes_per_sample(format);
-
         if (buffSizeInBytes == 0) {
             ALOGE("Error creating AudioRecord: frameCount is 0.");
             return (jint) AUDIORECORD_ERROR_SETUP_ZEROFRAMECOUNT;
         }
-        size_t frameSize = channelCount * bytesPerSample;
-        size_t frameCount = buffSizeInBytes / frameSize;
+        size_t frameCount = buffSizeInBytes / audio_bytes_per_frame(channelCount, format);
 
         // create an uninitialized AudioRecord object
         Parcel* parcel = parcelForJavaObject(env, jAttributionSource);
@@ -574,7 +571,7 @@
     if (result != NO_ERROR) {
         return -1;
     }
-    return frameCount * channelCount * audio_bytes_per_sample(format);
+    return frameCount * audio_bytes_per_frame(channelCount, format);
 }
 
 static jboolean android_media_AudioRecord_setInputDevice(
diff --git a/core/jni/android_util_Process.cpp b/core/jni/android_util_Process.cpp
index 18c60a7..91dfc60 100644
--- a/core/jni/android_util_Process.cpp
+++ b/core/jni/android_util_Process.cpp
@@ -1245,7 +1245,7 @@
 
 void android_os_Process_removeAllProcessGroups(JNIEnv* env, jobject clazz)
 {
-    return removeAllProcessGroups();
+    return removeAllEmptyProcessGroups();
 }
 
 static jint android_os_Process_nativePidFdOpen(JNIEnv* env, jobject, jint pid, jint flags) {
diff --git a/core/jni/android_view_InputEventReceiver.cpp b/core/jni/android_view_InputEventReceiver.cpp
index 0f41229..efdfce9 100644
--- a/core/jni/android_view_InputEventReceiver.cpp
+++ b/core/jni/android_view_InputEventReceiver.cpp
@@ -184,11 +184,11 @@
 void NativeInputEventReceiver::setFdEvents(int events) {
     if (mFdEvents != events) {
         mFdEvents = events;
-        int fd = mInputConsumer.getChannel()->getFd();
+        auto&& fd = mInputConsumer.getChannel()->getFd();
         if (events) {
-            mMessageQueue->getLooper()->addFd(fd, 0, events, this, nullptr);
+            mMessageQueue->getLooper()->addFd(fd.get(), 0, events, this, nullptr);
         } else {
-            mMessageQueue->getLooper()->removeFd(fd);
+            mMessageQueue->getLooper()->removeFd(fd.get());
         }
     }
 }
diff --git a/core/jni/android_view_InputEventSender.cpp b/core/jni/android_view_InputEventSender.cpp
index 8d39ddf..694b28b 100644
--- a/core/jni/android_view_InputEventSender.cpp
+++ b/core/jni/android_view_InputEventSender.cpp
@@ -101,8 +101,8 @@
 }
 
 status_t NativeInputEventSender::initialize() {
-    int receiveFd = mInputPublisher.getChannel()->getFd();
-    mMessageQueue->getLooper()->addFd(receiveFd, 0, ALOOPER_EVENT_INPUT, this, NULL);
+    auto&& receiveFd = mInputPublisher.getChannel()->getFd();
+    mMessageQueue->getLooper()->addFd(receiveFd.get(), 0, ALOOPER_EVENT_INPUT, this, NULL);
     return OK;
 }
 
@@ -111,7 +111,7 @@
         ALOGD("channel '%s' ~ Disposing input event sender.", getInputChannelName().c_str());
     }
 
-    mMessageQueue->getLooper()->removeFd(mInputPublisher.getChannel()->getFd());
+    mMessageQueue->getLooper()->removeFd(mInputPublisher.getChannel()->getFd().get());
 }
 
 status_t NativeInputEventSender::sendKeyEvent(uint32_t seq, const KeyEvent* event) {
diff --git a/core/res/Android.bp b/core/res/Android.bp
index b71995f..6fa70d8 100644
--- a/core/res/Android.bp
+++ b/core/res/Android.bp
@@ -151,6 +151,8 @@
             "simulated_device_launcher",
         ],
     },
+
+    generate_product_characteristics_rro: true,
 }
 
 java_genrule {
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 0e753e5..f7b6a7b 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -2278,6 +2278,7 @@
     <!-- Allows system apps to call methods to register itself as a mDNS offload engine.
         <p>Not for use by third-party or privileged applications.
         @SystemApi
+        @FlaggedApi("com.android.net.flags.register_nsd_offload_engine")
         @hide This should only be used by system apps.
     -->
     <permission android:name="android.permission.REGISTER_NSD_OFFLOAD_ENGINE"
diff --git a/core/res/res/values/attrs.xml b/core/res/res/values/attrs.xml
index 6f7bc53..3413282 100644
--- a/core/res/res/values/attrs.xml
+++ b/core/res/res/values/attrs.xml
@@ -4303,6 +4303,9 @@
         <!-- Whether the device must be screen on before routing data to this service.
              The default is true.-->
         <attr name="requireDeviceScreenOn" format="boolean"/>
+        <!-- Whether the device should default to observe mode when this service is
+             default or in the foreground. -->
+        <attr name="defaultToObserveMode" format="boolean"/>
     </declare-styleable>
 
     <!-- Use <code>offhost-apdu-service</code> as the root tag of the XML resource that
@@ -4327,6 +4330,9 @@
         <!-- Whether the device must be screen on before routing data to this service.
              The default is false.-->
         <attr name="requireDeviceScreenOn"/>
+        <!-- Whether the device should default to observe mode when this service is
+             default or in the foreground. -->
+        <attr name="defaultToObserveMode"/>
     </declare-styleable>
 
     <!-- Specify one or more <code>aid-group</code> elements inside a
diff --git a/core/res/res/xml/sms_short_codes.xml b/core/res/res/xml/sms_short_codes.xml
index 709646b..3a2e50a 100644
--- a/core/res/res/xml/sms_short_codes.xml
+++ b/core/res/res/xml/sms_short_codes.xml
@@ -34,7 +34,7 @@
          http://smscoin.net/software/engine/WordPress/Paid+SMS-registration/ -->
 
     <!-- Arab Emirates -->
-    <shortcode country="ae" pattern="\\d{1,5}" free="1017|1355|3214|6253" />
+    <shortcode country="ae" pattern="\\d{1,5}" free="1017|1355|3214" />
 
     <!-- Albania: 5 digits, known short codes listed -->
     <shortcode country="al" pattern="\\d{5}" premium="15191|55[56]00" />
@@ -155,7 +155,7 @@
     <shortcode country="ie" pattern="\\d{5}" premium="5[3-9]\\d{3}" free="50\\d{3}|116\\d{3}" standard="5[12]\\d{3}" />
 
     <!-- Israel: 4 digits, known premium codes listed -->
-    <shortcode country="il" pattern="\\d{1,5}" premium="4422|4545"  free="37477" />
+    <shortcode country="il" pattern="\\d{4}" premium="4422|4545" />
 
     <!-- Italy: 5 digits (premium=41xxx,42xxx), plus EU:
          https://www.itu.int/dms_pub/itu-t/oth/02/02/T020200006B0001PDFE.pdf -->
@@ -198,9 +198,6 @@
     <!-- Malaysia: 5 digits: http://www.skmm.gov.my/attachment/Consumer_Regulation/Mobile_Content_Services_FAQs.pdf -->
     <shortcode country="my" pattern="\\d{5}" premium="32298|33776" free="22099|28288|66668" />
 
-    <!-- Namibia: 5 digits -->
-    <shortcode country="na" pattern="\\d{1,5}" free="40005" />
-
     <!-- The Netherlands, 4 digits, known premium codes listed, plus EU -->
     <shortcode country="nl" pattern="\\d{4}" premium="4466|5040" free="116\\d{3}|2223|6225|2223|1662" />
 
diff --git a/errorprone/java/com/google/errorprone/bugpatterns/android/HideInCommentsChecker.java b/errorprone/java/com/google/errorprone/bugpatterns/android/HideInCommentsChecker.java
index 07f1d4a..8dc9579 100644
--- a/errorprone/java/com/google/errorprone/bugpatterns/android/HideInCommentsChecker.java
+++ b/errorprone/java/com/google/errorprone/bugpatterns/android/HideInCommentsChecker.java
@@ -63,7 +63,7 @@
 
     @Override
     public Description matchCompilationUnit(CompilationUnitTree tree, VisitorState state) {
-        final Map<Integer, Tree> javadocableTrees = findJavadocableTrees(tree);
+        final Map<Integer, Tree> javadocableTrees = findJavadocableTrees(tree, state);
         final String sourceCode = state.getSourceCode().toString();
         for (ErrorProneToken token : ErrorProneTokens.getTokens(sourceCode, state.context)) {
             for (Tokens.Comment comment : token.comments()) {
@@ -112,9 +112,9 @@
     }
 
 
-    private Map<Integer, Tree> findJavadocableTrees(CompilationUnitTree tree) {
+    private Map<Integer, Tree> findJavadocableTrees(CompilationUnitTree tree, VisitorState state) {
         Map<Integer, Tree> javadoccableTrees = new HashMap<>();
-        new SuppressibleTreePathScanner<Void, Void>() {
+        new SuppressibleTreePathScanner<Void, Void>(state) {
             @Override
             public Void visitClass(ClassTree classTree, Void unused) {
                 javadoccableTrees.put(getStartPosition(classTree), classTree);
diff --git a/graphics/java/android/graphics/BaseRecordingCanvas.java b/graphics/java/android/graphics/BaseRecordingCanvas.java
index 2ec4524..d659ddd 100644
--- a/graphics/java/android/graphics/BaseRecordingCanvas.java
+++ b/graphics/java/android/graphics/BaseRecordingCanvas.java
@@ -402,8 +402,8 @@
     }
 
     @Override
-    public final void drawDoubleRoundRect(@NonNull RectF outer, float[] outerRadii,
-            @NonNull RectF inner, float[] innerRadii, @NonNull Paint paint) {
+    public final void drawDoubleRoundRect(@NonNull RectF outer, @NonNull float[] outerRadii,
+            @NonNull RectF inner, @NonNull float[] innerRadii, @NonNull Paint paint) {
         nDrawDoubleRoundRect(mNativeCanvasWrapper,
                 outer.left, outer.top, outer.right, outer.bottom, outerRadii,
                 inner.left, inner.top, inner.right, inner.bottom, innerRadii,
diff --git a/graphics/java/android/graphics/RenderNode.java b/graphics/java/android/graphics/RenderNode.java
index 2e91c24..15d26eb 100644
--- a/graphics/java/android/graphics/RenderNode.java
+++ b/graphics/java/android/graphics/RenderNode.java
@@ -971,6 +971,23 @@
     }
 
     /**
+     * Configure the {@link android.graphics.RenderEffect} to apply to the backdrop contents of
+     * this RenderNode. This will apply a visual effect to the result of the backdrop contents
+     * of this RenderNode before the RenderNode is drawn into the destination. For example if
+     * {@link RenderEffect#createBlurEffect(float, float, RenderEffect, Shader.TileMode)}
+     * is provided, the previous content behind this RenderNode will be blurred before the
+     * RenderNode is drawn in to the destination.
+     * @param renderEffect to be applied to the backdrop contents of this RenderNode. Passing
+     *          null clears all previously configured RenderEffects
+     * @return True if the value changed, false if the new value was the same as the previous value.
+     * @hide
+     */
+    public boolean setBackdropRenderEffect(@Nullable RenderEffect renderEffect) {
+        return nSetBackdropRenderEffect(mNativeRenderNode,
+                renderEffect != null ? renderEffect.getNativeInstance() : 0);
+    }
+
+    /**
      * Returns the translucency level of this display list.
      *
      * @return A value between 0.0f and 1.0f
@@ -1797,6 +1814,9 @@
     private static native boolean nSetRenderEffect(long renderNode, long renderEffect);
 
     @CriticalNative
+    private static native boolean nSetBackdropRenderEffect(long renderNode, long renderEffect);
+
+    @CriticalNative
     private static native boolean nSetHasOverlappingRendering(long renderNode,
             boolean hasOverlappingRendering);
 
diff --git a/keystore/java/android/security/AndroidKeyStoreMaintenance.java b/keystore/java/android/security/AndroidKeyStoreMaintenance.java
index b7ea04f..2beb434 100644
--- a/keystore/java/android/security/AndroidKeyStoreMaintenance.java
+++ b/keystore/java/android/security/AndroidKeyStoreMaintenance.java
@@ -51,7 +51,7 @@
      * @return 0 if successful or a {@code ResponseCode}
      * @hide
      */
-    public static int onUserAdded(@NonNull int userId) {
+    public static int onUserAdded(int userId) {
         StrictMode.noteDiskWrite();
         try {
             getService().onUserAdded(userId);
@@ -66,6 +66,30 @@
     }
 
     /**
+     * Tells Keystore to create a user's super keys and store them encrypted by the given secret.
+     *
+     * @param userId - Android user id of the user
+     * @param password - a secret derived from the user's synthetic password
+     * @param allowExisting - true if the keys already existing should not be considered an error
+     * @return 0 if successful or a {@code ResponseCode}
+     * @hide
+     */
+    public static int initUserSuperKeys(int userId, @NonNull byte[] password,
+            boolean allowExisting) {
+        StrictMode.noteDiskWrite();
+        try {
+            getService().initUserSuperKeys(userId, password, allowExisting);
+            return 0;
+        } catch (ServiceSpecificException e) {
+            Log.e(TAG, "initUserSuperKeys failed", e);
+            return e.errorCode;
+        } catch (Exception e) {
+            Log.e(TAG, "Can not connect to keystore", e);
+            return SYSTEM_ERROR;
+        }
+    }
+
+    /**
      * Informs Keystore 2.0 about removing a user
      *
      * @param userId - Android user id of the user being removed
@@ -110,6 +134,28 @@
     }
 
     /**
+     * Tells Keystore that a user's LSKF is being removed, ie the user's lock screen is changing to
+     * Swipe or None.  Keystore uses this notification to delete the user's auth-bound keys.
+     *
+     * @param userId - Android user id of the user
+     * @return 0 if successful or a {@code ResponseCode}
+     * @hide
+     */
+    public static int onUserLskfRemoved(int userId) {
+        StrictMode.noteDiskWrite();
+        try {
+            getService().onUserLskfRemoved(userId);
+            return 0;
+        } catch (ServiceSpecificException e) {
+            Log.e(TAG, "onUserLskfRemoved failed", e);
+            return e.errorCode;
+        } catch (Exception e) {
+            Log.e(TAG, "Can not connect to keystore", e);
+            return SYSTEM_ERROR;
+        }
+    }
+
+    /**
      * Informs Keystore 2.0 that an app was uninstalled and the corresponding namespace is to
      * be cleared.
      */
diff --git a/keystore/java/android/security/KeyStore2.java b/keystore/java/android/security/KeyStore2.java
index 5e16bce..dd703f5 100644
--- a/keystore/java/android/security/KeyStore2.java
+++ b/keystore/java/android/security/KeyStore2.java
@@ -33,7 +33,6 @@
 import android.util.Log;
 
 import java.util.Calendar;
-import java.util.Objects;
 
 /**
  * @hide This should not be made public in its present form because it
@@ -139,13 +138,25 @@
         return new KeyStore2();
     }
 
+    /**
+     * Gets the {@link IKeystoreService} that should be started in early_hal in Android.
+     *
+     * @throws IllegalStateException if the KeystoreService is not available or has not
+     * been initialized when called. This is a state that should not happen and indicates
+     * and error somewhere in the stack or with the calling processes access permissions.
+     */
     @NonNull private synchronized IKeystoreService getService(boolean retryLookup) {
         if (mBinder == null || retryLookup) {
             mBinder = IKeystoreService.Stub.asInterface(ServiceManager
-                    .getService(KEYSTORE2_SERVICE_NAME));
-            Binder.allowBlocking(mBinder.asBinder());
+                .getService(KEYSTORE2_SERVICE_NAME));
         }
-        return Objects.requireNonNull(mBinder);
+        if (mBinder == null) {
+            throw new IllegalStateException(
+                    "Could not connect to Keystore service. Keystore may have crashed or not been"
+                            + " initialized");
+        }
+        Binder.allowBlocking(mBinder.asBinder());
+        return mBinder;
     }
 
     void delete(KeyDescriptor descriptor) throws KeyStoreException {
diff --git a/keystore/java/android/security/keystore/KeyGenParameterSpec.java b/keystore/java/android/security/keystore/KeyGenParameterSpec.java
index b714035..231fa48 100644
--- a/keystore/java/android/security/keystore/KeyGenParameterSpec.java
+++ b/keystore/java/android/security/keystore/KeyGenParameterSpec.java
@@ -1282,15 +1282,18 @@
          * function (MGF1) with a digest.
          * The default digest for MGF1 is {@code SHA-1}, which will be specified during key creation
          * time if no digests have been explicitly provided.
-         * When using the key, the caller may not specify any digests that were not provided during
-         * key creation time. The caller may specify the default digest, {@code SHA-1}, if no
+         * {@code null} may not be specified as a parameter to this method: It is not possible to
+         * disable MGF1 digest, a default must be present for when the caller tries to use it.
+         *
+         * <p>When using the key, the caller may not specify any digests that were not provided
+         * during key creation time. The caller may specify the default digest, {@code SHA-1}, if no
          * digests were explicitly provided during key creation (but it is not necessary to do so).
          *
          * <p>See {@link KeyProperties}.{@code DIGEST} constants.
          */
         @NonNull
         @FlaggedApi("MGF1_DIGEST_SETTER")
-        public Builder setMgf1Digests(@Nullable @KeyProperties.DigestEnum String... mgf1Digests) {
+        public Builder setMgf1Digests(@NonNull @KeyProperties.DigestEnum String... mgf1Digests) {
             mMgf1Digests = Set.of(mgf1Digests);
             return this;
         }
diff --git a/libs/hwui/Android.bp b/libs/hwui/Android.bp
index db58147..b5e6f94 100644
--- a/libs/hwui/Android.bp
+++ b/libs/hwui/Android.bp
@@ -514,6 +514,7 @@
         "canvas/CanvasOpRasterizer.cpp",
         "effects/StretchEffect.cpp",
         "effects/GainmapRenderer.cpp",
+        "pipeline/skia/BackdropFilterDrawable.cpp",
         "pipeline/skia/HolePunch.cpp",
         "pipeline/skia/SkiaDisplayList.cpp",
         "pipeline/skia/SkiaRecordingCanvas.cpp",
diff --git a/libs/hwui/Mesh.cpp b/libs/hwui/Mesh.cpp
index e59bc95..37a7d74 100644
--- a/libs/hwui/Mesh.cpp
+++ b/libs/hwui/Mesh.cpp
@@ -90,8 +90,8 @@
             FAIL_MESH_VALIDATE("%s mode requires at least %zu vertices but vertex count is %zu.",
                                modeToStr(meshMode), min_vcount_for_mode(meshMode), mVertexCount);
         }
-        SkASSERT(!fICount);
-        SkASSERT(!fIOffset);
+        LOG_ALWAYS_FATAL_IF(mIndexCount != 0);
+        LOG_ALWAYS_FATAL_IF(mIndexOffset != 0);
     }
 
     if (!sm.ok()) {
diff --git a/libs/hwui/RenderNode.cpp b/libs/hwui/RenderNode.cpp
index 1c39db3..1dd22cf 100644
--- a/libs/hwui/RenderNode.cpp
+++ b/libs/hwui/RenderNode.cpp
@@ -260,6 +260,12 @@
         pushStagingDisplayListChanges(observer, info);
     }
 
+    // always damageSelf when filtering backdrop content, or else the BackdropFilterDrawable will
+    // get a wrong snapshot of previous content.
+    if (mProperties.layerProperties().getBackdropImageFilter()) {
+        damageSelf(info);
+    }
+
     if (mDisplayList) {
         info.out.hasFunctors |= mDisplayList.hasFunctor();
         mHasHolePunches = mDisplayList.hasHolePunches();
diff --git a/libs/hwui/RenderProperties.cpp b/libs/hwui/RenderProperties.cpp
index 0589f13..c537123 100644
--- a/libs/hwui/RenderProperties.cpp
+++ b/libs/hwui/RenderProperties.cpp
@@ -55,6 +55,12 @@
     return true;
 }
 
+bool LayerProperties::setBackdropImageFilter(SkImageFilter* imageFilter) {
+    if (mBackdropImageFilter.get() == imageFilter) return false;
+    mBackdropImageFilter = sk_ref_sp(imageFilter);
+    return true;
+}
+
 bool LayerProperties::setFromPaint(const SkPaint* paint) {
     bool changed = false;
     changed |= setAlpha(static_cast<uint8_t>(PaintUtils::getAlphaDirect(paint)));
@@ -70,6 +76,7 @@
     setXferMode(other.xferMode());
     setColorFilter(other.getColorFilter());
     setImageFilter(other.getImageFilter());
+    setBackdropImageFilter(other.getBackdropImageFilter());
     mStretchEffect = other.mStretchEffect;
     return *this;
 }
diff --git a/libs/hwui/RenderProperties.h b/libs/hwui/RenderProperties.h
index 064ba7a..e358b57 100644
--- a/libs/hwui/RenderProperties.h
+++ b/libs/hwui/RenderProperties.h
@@ -97,8 +97,12 @@
 
     bool setImageFilter(SkImageFilter* imageFilter);
 
+    bool setBackdropImageFilter(SkImageFilter* imageFilter);
+
     SkImageFilter* getImageFilter() const { return mImageFilter.get(); }
 
+    SkImageFilter* getBackdropImageFilter() const { return mBackdropImageFilter.get(); }
+
     const StretchEffect& getStretchEffect() const { return mStretchEffect; }
 
     StretchEffect& mutableStretchEffect() { return mStretchEffect; }
@@ -129,6 +133,7 @@
     SkBlendMode mMode;
     sk_sp<SkColorFilter> mColorFilter;
     sk_sp<SkImageFilter> mImageFilter;
+    sk_sp<SkImageFilter> mBackdropImageFilter;
     StretchEffect mStretchEffect;
 };
 
diff --git a/libs/hwui/SkiaCanvas.cpp b/libs/hwui/SkiaCanvas.cpp
index 8394c3c..ea9b6c9 100644
--- a/libs/hwui/SkiaCanvas.cpp
+++ b/libs/hwui/SkiaCanvas.cpp
@@ -588,10 +588,40 @@
 // Canvas draw operations: Bitmaps
 // ----------------------------------------------------------------------------
 
+bool SkiaCanvas::useGainmapShader(Bitmap& bitmap) {
+    // If the bitmap doesn't have a gainmap, don't use the gainmap shader
+    if (!bitmap.hasGainmap()) return false;
+
+    // If we don't have an owned canvas, then we're either hardware accelerated or drawing
+    // to a picture - use the gainmap shader out of caution. Ideally a picture canvas would
+    // use a drawable here instead to defer making that decision until the last possible
+    // moment
+    if (!mCanvasOwned) return true;
+
+    auto info = mCanvasOwned->imageInfo();
+
+    // If it's an unknown colortype then it's not a bitmap-backed canvas
+    if (info.colorType() == SkColorType::kUnknown_SkColorType) return true;
+
+    skcms_TransferFunction tfn;
+    info.colorSpace()->transferFn(&tfn);
+
+    auto transferType = skcms_TransferFunction_getType(&tfn);
+    switch (transferType) {
+        case skcms_TFType_HLGish:
+        case skcms_TFType_HLGinvish:
+        case skcms_TFType_PQish:
+            return true;
+        case skcms_TFType_Invalid:
+        case skcms_TFType_sRGBish:
+            return false;
+    }
+}
+
 void SkiaCanvas::drawBitmap(Bitmap& bitmap, float left, float top, const Paint* paint) {
     auto image = bitmap.makeImage();
 
-    if (bitmap.hasGainmap()) {
+    if (useGainmapShader(bitmap)) {
         Paint gainmapPaint = paint ? *paint : Paint();
         sk_sp<SkShader> gainmapShader = uirenderer::MakeGainmapShader(
                 image, bitmap.gainmap()->bitmap->makeImage(), bitmap.gainmap()->info,
@@ -618,7 +648,7 @@
     SkRect srcRect = SkRect::MakeLTRB(srcLeft, srcTop, srcRight, srcBottom);
     SkRect dstRect = SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom);
 
-    if (bitmap.hasGainmap()) {
+    if (useGainmapShader(bitmap)) {
         Paint gainmapPaint = paint ? *paint : Paint();
         sk_sp<SkShader> gainmapShader = uirenderer::MakeGainmapShader(
                 image, bitmap.gainmap()->bitmap->makeImage(), bitmap.gainmap()->info,
diff --git a/libs/hwui/SkiaCanvas.h b/libs/hwui/SkiaCanvas.h
index b785989..9cb50ed 100644
--- a/libs/hwui/SkiaCanvas.h
+++ b/libs/hwui/SkiaCanvas.h
@@ -223,6 +223,8 @@
 
     void drawPoints(const float* points, int count, const Paint& paint, SkCanvas::PointMode mode);
 
+    bool useGainmapShader(Bitmap& bitmap);
+
     class Clip;
 
     std::unique_ptr<SkCanvas> mCanvasOwned;  // Might own a canvas we allocated.
diff --git a/libs/hwui/jni/YuvToJpegEncoder.cpp b/libs/hwui/jni/YuvToJpegEncoder.cpp
index 69418b0..7298906 100644
--- a/libs/hwui/jni/YuvToJpegEncoder.cpp
+++ b/libs/hwui/jni/YuvToJpegEncoder.cpp
@@ -5,6 +5,7 @@
 #include "SkStream.h"
 #include "YuvToJpegEncoder.h"
 #include <ui/PixelFormat.h>
+#include <utils/Errors.h>
 #include <hardware/hardware.h>
 
 #include "graphics_jni_helpers.h"
@@ -298,7 +299,7 @@
 }
 ///////////////////////////////////////////////////////////////////////////////
 
-using namespace android::ultrahdr;
+using namespace ultrahdr;
 
 ultrahdr_color_gamut P010Yuv420ToJpegREncoder::findColorGamut(JNIEnv* env, int aDataSpace) {
     switch (aDataSpace & ADataSpace::STANDARD_MASK) {
diff --git a/libs/hwui/jni/YuvToJpegEncoder.h b/libs/hwui/jni/YuvToJpegEncoder.h
index 8ef7805..0e711ef 100644
--- a/libs/hwui/jni/YuvToJpegEncoder.h
+++ b/libs/hwui/jni/YuvToJpegEncoder.h
@@ -103,7 +103,7 @@
      *  @param aDataSpace data space defined in data_space.h.
      *  @return color gamut for JPEG/R.
      */
-    static android::ultrahdr::ultrahdr_color_gamut findColorGamut(JNIEnv* env, int aDataSpace);
+    static ultrahdr::ultrahdr_color_gamut findColorGamut(JNIEnv* env, int aDataSpace);
 
     /** Map data space (defined in DataSpace.java and data_space.h) to the transfer function
      *  used in JPEG/R
@@ -112,8 +112,8 @@
      *  @param aDataSpace data space defined in data_space.h.
      *  @return color gamut for JPEG/R.
      */
-    static android::ultrahdr::ultrahdr_transfer_function findHdrTransferFunction(
-            JNIEnv* env, int aDataSpace);
+    static ultrahdr::ultrahdr_transfer_function findHdrTransferFunction(JNIEnv* env,
+                                                                        int aDataSpace);
 };
 
 #endif  // _ANDROID_GRAPHICS_YUV_TO_JPEG_ENCODER_H_
diff --git a/libs/hwui/jni/android_graphics_RenderNode.cpp b/libs/hwui/jni/android_graphics_RenderNode.cpp
index 8c7b9a4..2a218a2 100644
--- a/libs/hwui/jni/android_graphics_RenderNode.cpp
+++ b/libs/hwui/jni/android_graphics_RenderNode.cpp
@@ -243,6 +243,13 @@
     return SET_AND_DIRTY(mutateLayerProperties().setImageFilter, imageFilter, RenderNode::GENERIC);
 }
 
+static jboolean android_view_RenderNode_setBackdropRenderEffect(
+        CRITICAL_JNI_PARAMS_COMMA jlong renderNodePtr, jlong renderEffectPtr) {
+    SkImageFilter* imageFilter = reinterpret_cast<SkImageFilter*>(renderEffectPtr);
+    return SET_AND_DIRTY(mutateLayerProperties().setBackdropImageFilter, imageFilter,
+                         RenderNode::GENERIC);
+}
+
 static jboolean android_view_RenderNode_setHasOverlappingRendering(CRITICAL_JNI_PARAMS_COMMA jlong renderNodePtr,
         bool hasOverlappingRendering) {
     return SET_AND_DIRTY(setHasOverlappingRendering, hasOverlappingRendering,
@@ -792,6 +799,8 @@
 
         {"nSetAlpha", "(JF)Z", (void*)android_view_RenderNode_setAlpha},
         {"nSetRenderEffect", "(JJ)Z", (void*)android_view_RenderNode_setRenderEffect},
+        {"nSetBackdropRenderEffect", "(JJ)Z",
+         (void*)android_view_RenderNode_setBackdropRenderEffect},
         {"nSetHasOverlappingRendering", "(JZ)Z",
          (void*)android_view_RenderNode_setHasOverlappingRendering},
         {"nSetUsageHint", "(JI)V", (void*)android_view_RenderNode_setUsageHint},
diff --git a/libs/hwui/pipeline/skia/BackdropFilterDrawable.cpp b/libs/hwui/pipeline/skia/BackdropFilterDrawable.cpp
new file mode 100644
index 0000000..ffad699
--- /dev/null
+++ b/libs/hwui/pipeline/skia/BackdropFilterDrawable.cpp
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "BackdropFilterDrawable.h"
+
+#include <SkImage.h>
+#include <SkSurface.h>
+
+#include "RenderNode.h"
+#include "RenderNodeDrawable.h"
+
+namespace android {
+namespace uirenderer {
+namespace skiapipeline {
+
+BackdropFilterDrawable::~BackdropFilterDrawable() {}
+
+bool BackdropFilterDrawable::prepareToDraw(SkCanvas* canvas, const RenderProperties& properties,
+                                           int backdropImageWidth, int backdropImageHeight) {
+    // the drawing bounds for blurred content.
+    mDstBounds.setWH(properties.getWidth(), properties.getHeight());
+
+    float alphaMultiplier = 1.0f;
+    RenderNodeDrawable::setViewProperties(properties, canvas, &alphaMultiplier, true);
+
+    // get proper subset for previous content.
+    canvas->getTotalMatrix().mapRect(&mImageSubset, mDstBounds);
+    SkRect imageSubset(mImageSubset);
+    // ensure the subset is inside bounds of previous content.
+    if (!mImageSubset.intersect(SkRect::MakeWH(backdropImageWidth, backdropImageHeight))) {
+        return false;
+    }
+
+    // correct the drawing bounds if subset was changed.
+    if (mImageSubset != imageSubset) {
+        SkMatrix inverse;
+        if (canvas->getTotalMatrix().invert(&inverse)) {
+            inverse.mapRect(&mDstBounds, mImageSubset);
+        }
+    }
+
+    // follow the alpha from the target RenderNode.
+    mPaint.setAlpha(properties.layerProperties().alpha() * alphaMultiplier);
+    return true;
+}
+
+void BackdropFilterDrawable::onDraw(SkCanvas* canvas) {
+    const RenderProperties& properties = mTargetRenderNode->properties();
+    auto* backdropFilter = properties.layerProperties().getBackdropImageFilter();
+    auto* surface = canvas->getSurface();
+    if (!backdropFilter || !surface) {
+        return;
+    }
+
+    auto backdropImage = surface->makeImageSnapshot();
+    // sync necessary properties from target RenderNode.
+    if (!prepareToDraw(canvas, properties, backdropImage->width(), backdropImage->height())) {
+        return;
+    }
+
+    auto imageSubset = mImageSubset.roundOut();
+    backdropImage =
+            backdropImage->makeWithFilter(canvas->recordingContext(), backdropFilter, imageSubset,
+                                          imageSubset, &mOutSubset, &mOutOffset);
+    canvas->drawImageRect(backdropImage, SkRect::Make(mOutSubset), mDstBounds,
+                          SkSamplingOptions(SkFilterMode::kLinear), &mPaint,
+                          SkCanvas::kStrict_SrcRectConstraint);
+}
+
+}  // namespace skiapipeline
+}  // namespace uirenderer
+}  // namespace android
diff --git a/libs/hwui/pipeline/skia/BackdropFilterDrawable.h b/libs/hwui/pipeline/skia/BackdropFilterDrawable.h
new file mode 100644
index 0000000..9e35837
--- /dev/null
+++ b/libs/hwui/pipeline/skia/BackdropFilterDrawable.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <SkCanvas.h>
+#include <SkDrawable.h>
+#include <SkPaint.h>
+
+namespace android {
+namespace uirenderer {
+
+class RenderNode;
+class RenderProperties;
+
+namespace skiapipeline {
+
+/**
+ * This drawable captures it's backdrop content and render it with a
+ * image filter.
+ */
+class BackdropFilterDrawable : public SkDrawable {
+public:
+    BackdropFilterDrawable(RenderNode* renderNode, SkCanvas* canvas)
+            : mTargetRenderNode(renderNode), mBounds(canvas->getLocalClipBounds()) {}
+
+    ~BackdropFilterDrawable();
+
+private:
+    RenderNode* mTargetRenderNode;
+    SkPaint mPaint;
+
+    SkRect mDstBounds;
+    SkRect mImageSubset;
+    SkIRect mOutSubset;
+    SkIPoint mOutOffset;
+
+    /**
+     * Check all necessary properties before actual drawing.
+     * Return true if ready to draw.
+     */
+    bool prepareToDraw(SkCanvas* canvas, const RenderProperties& properties, int backdropImageWidth,
+                       int backdropImageHeight);
+
+protected:
+    void onDraw(SkCanvas* canvas) override;
+
+    virtual SkRect onGetBounds() override { return mBounds; }
+    const SkRect mBounds;
+};
+
+}  // namespace skiapipeline
+}  // namespace uirenderer
+}  // namespace android
diff --git a/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp b/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp
index da4f66d..9d72c23 100644
--- a/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp
+++ b/libs/hwui/pipeline/skia/RenderNodeDrawable.cpp
@@ -362,7 +362,7 @@
 }
 
 void RenderNodeDrawable::setViewProperties(const RenderProperties& properties, SkCanvas* canvas,
-                                           float* alphaMultiplier) {
+                                           float* alphaMultiplier, bool ignoreLayer) {
     if (properties.getLeft() != 0 || properties.getTop() != 0) {
         canvas->translate(properties.getLeft(), properties.getTop());
     }
@@ -378,7 +378,8 @@
             canvas->concat(*properties.getTransformMatrix());
         }
     }
-    if (Properties::getStretchEffectBehavior() == StretchEffectBehavior::UniformScale) {
+    if (Properties::getStretchEffectBehavior() == StretchEffectBehavior::UniformScale &&
+        !ignoreLayer) {
         const StretchEffect& stretch = properties.layerProperties().getStretchEffect();
         if (!stretch.isEmpty()) {
             canvas->concat(
@@ -388,10 +389,10 @@
     const bool isLayer = properties.effectiveLayerType() != LayerType::None;
     int clipFlags = properties.getClippingFlags();
     if (properties.getAlpha() < 1) {
-        if (isLayer) {
+        if (isLayer && !ignoreLayer) {
             clipFlags &= ~CLIP_TO_BOUNDS;  // bounds clipping done by layer
         }
-        if (CC_LIKELY(isLayer || !properties.getHasOverlappingRendering())) {
+        if (CC_LIKELY(isLayer || !properties.getHasOverlappingRendering()) || ignoreLayer) {
             *alphaMultiplier = properties.getAlpha();
         } else {
             // savelayer needed to create an offscreen buffer
diff --git a/libs/hwui/pipeline/skia/RenderNodeDrawable.h b/libs/hwui/pipeline/skia/RenderNodeDrawable.h
index c7582e7..818ac45 100644
--- a/libs/hwui/pipeline/skia/RenderNodeDrawable.h
+++ b/libs/hwui/pipeline/skia/RenderNodeDrawable.h
@@ -120,7 +120,7 @@
      * Applies the rendering properties of a view onto a SkCanvas.
      */
     static void setViewProperties(const RenderProperties& properties, SkCanvas* canvas,
-                                  float* alphaMultiplier);
+                                  float* alphaMultiplier, bool ignoreLayer = false);
 
     /**
      * Stores transform on the canvas at time of recording and is used for
@@ -149,6 +149,11 @@
      * display list that is searched for any render nodes with getProjectBackwards==true
      */
     SkiaDisplayList* mProjectedDisplayList = nullptr;
+
+    /**
+     * Allow BackdropFilterDrawable to apply same render properties onto SkCanvas.
+     */
+    friend class BackdropFilterDrawable;
 };
 
 }  // namespace skiapipeline
diff --git a/libs/hwui/pipeline/skia/SkiaRecordingCanvas.cpp b/libs/hwui/pipeline/skia/SkiaRecordingCanvas.cpp
index 3ca7eeb..58c14c1 100644
--- a/libs/hwui/pipeline/skia/SkiaRecordingCanvas.cpp
+++ b/libs/hwui/pipeline/skia/SkiaRecordingCanvas.cpp
@@ -37,6 +37,7 @@
 #include "NinePatchUtils.h"
 #include "RenderNode.h"
 #include "pipeline/skia/AnimatedDrawables.h"
+#include "pipeline/skia/BackdropFilterDrawable.h"
 #ifdef __ANDROID__ // Layoutlib does not support GL, Vulcan etc.
 #include "pipeline/skia/GLFunctorDrawable.h"
 #include "pipeline/skia/VkFunctorDrawable.h"
@@ -168,6 +169,14 @@
         // Put Vulkan WebViews with non-rectangular clips in a HW layer
         renderNode->mutateStagingProperties().setClipMayBeComplex(mRecorder.isClipMayBeComplex());
     }
+
+    // draw backdrop filter drawable if needed.
+    if (renderNode->stagingProperties().layerProperties().getBackdropImageFilter()) {
+        auto* backdropFilterDrawable =
+                mDisplayList->allocateDrawable<BackdropFilterDrawable>(renderNode, asSkCanvas());
+        drawDrawable(backdropFilterDrawable);
+    }
+
     drawDrawable(&renderNodeDrawable);
 
     // use staging property, since recording on UI thread
diff --git a/libs/hwui/tests/unit/RenderNodeDrawableTests.cpp b/libs/hwui/tests/unit/RenderNodeDrawableTests.cpp
index 596bd37..f67042b 100644
--- a/libs/hwui/tests/unit/RenderNodeDrawableTests.cpp
+++ b/libs/hwui/tests/unit/RenderNodeDrawableTests.cpp
@@ -20,14 +20,17 @@
 #include <SkBlendMode.h>
 #include <SkClipStack.h>
 #include <SkSurface_Base.h>
+#include <include/effects/SkImageFilters.h>
 #include <string.h>
+
 #include "AnimationContext.h"
 #include "DamageAccumulator.h"
 #include "FatalTestCanvas.h"
 #include "IContextFactory.h"
-#include "hwui/Paint.h"
 #include "RecordingCanvas.h"
 #include "SkiaCanvas.h"
+#include "hwui/Paint.h"
+#include "pipeline/skia/BackdropFilterDrawable.h"
 #include "pipeline/skia/SkiaDisplayList.h"
 #include "pipeline/skia/SkiaOpenGLPipeline.h"
 #include "pipeline/skia/SkiaPipeline.h"
@@ -1210,3 +1213,77 @@
     canvas.drawDrawable(&drawable);
     EXPECT_EQ(2, canvas.mDrawCounter);
 }
+
+// Verify drawing logics for BackdropFilterDrawable
+RENDERTHREAD_TEST(BackdropFilterDrawable, drawing) {
+    static const int CANVAS_WIDTH = 100;
+    static const int CANVAS_HEIGHT = 200;
+    class SimpleTestCanvas : public TestCanvasBase {
+    public:
+        SkRect mDstBounds;
+        SimpleTestCanvas() : TestCanvasBase(CANVAS_WIDTH, CANVAS_HEIGHT) {}
+        void onDrawRect(const SkRect& rect, const SkPaint& paint) override {
+            // did nothing.
+        }
+
+        // called when BackdropFilterDrawable is drawn.
+        void onDrawImageRect2(const SkImage*, const SkRect& src, const SkRect& dst,
+                              const SkSamplingOptions&, const SkPaint*,
+                              SrcRectConstraint) override {
+            mDrawCounter++;
+            mDstBounds = dst;
+        }
+    };
+    class SimpleLayer : public SkSurface_Base {
+    public:
+        SimpleLayer()
+                : SkSurface_Base(SkImageInfo::MakeN32Premul(CANVAS_WIDTH, CANVAS_HEIGHT), nullptr) {
+        }
+        virtual sk_sp<SkImage> onNewImageSnapshot(const SkIRect* bounds) override {
+            SkBitmap bitmap;
+            bitmap.allocN32Pixels(CANVAS_WIDTH, CANVAS_HEIGHT);
+            bitmap.setImmutable();
+            return SkImage::MakeFromBitmap(bitmap);
+        }
+        SkCanvas* onNewCanvas() override { return new SimpleTestCanvas(); }
+        sk_sp<SkSurface> onNewSurface(const SkImageInfo&) override { return nullptr; }
+        bool onCopyOnWrite(ContentChangeMode) override { return true; }
+        void onWritePixels(const SkPixmap&, int x, int y) {}
+    };
+
+    auto node = TestUtils::createSkiaNode(0, 0, CANVAS_WIDTH, CANVAS_HEIGHT,
+                                          [](RenderProperties& props, SkiaRecordingCanvas& canvas) {
+                                              canvas.drawRect(0, 0, CANVAS_WIDTH, CANVAS_HEIGHT,
+                                                              Paint());
+                                          });
+
+    sk_sp<SkSurface> surface(new SimpleLayer());
+    auto* canvas = reinterpret_cast<SimpleTestCanvas*>(surface->getCanvas());
+    RenderNodeDrawable drawable(node.get(), canvas, true);
+    BackdropFilterDrawable backdropDrawable(node.get(), canvas);
+    canvas->drawDrawable(&drawable);
+    canvas->drawDrawable(&backdropDrawable);
+    // no backdrop filter, skip drawing.
+    EXPECT_EQ(0, canvas->mDrawCounter);
+
+    sk_sp<SkImageFilter> filter(SkImageFilters::Blur(3, 3, nullptr));
+    node->animatorProperties().mutateLayerProperties().setBackdropImageFilter(filter.get());
+    canvas->drawDrawable(&drawable);
+    canvas->drawDrawable(&backdropDrawable);
+    // backdrop filter is set, ok to draw.
+    EXPECT_EQ(1, canvas->mDrawCounter);
+    EXPECT_EQ(SkRect::MakeLTRB(0, 0, CANVAS_WIDTH, CANVAS_HEIGHT), canvas->mDstBounds);
+
+    canvas->translate(30, 30);
+    canvas->drawDrawable(&drawable);
+    canvas->drawDrawable(&backdropDrawable);
+    // the drawable is still visible, ok to draw.
+    EXPECT_EQ(2, canvas->mDrawCounter);
+    EXPECT_EQ(SkRect::MakeLTRB(0, 0, CANVAS_WIDTH - 30, CANVAS_HEIGHT - 30), canvas->mDstBounds);
+
+    canvas->translate(CANVAS_WIDTH, CANVAS_HEIGHT);
+    canvas->drawDrawable(&drawable);
+    canvas->drawDrawable(&backdropDrawable);
+    // the drawable is invisible, skip drawing.
+    EXPECT_EQ(2, canvas->mDrawCounter);
+}
diff --git a/media/java/android/media/AudioRecord.java b/media/java/android/media/AudioRecord.java
index 7faa13c..447d3bb 100644
--- a/media/java/android/media/AudioRecord.java
+++ b/media/java/android/media/AudioRecord.java
@@ -1176,6 +1176,7 @@
             case AudioFormat.ENCODING_PCM_FLOAT:
             case AudioFormat.ENCODING_PCM_16BIT:
             case AudioFormat.ENCODING_PCM_8BIT:
+            case AudioFormat.ENCODING_E_AC3_JOC:
                 mAudioFormat = audioFormat;
                 break;
             default:
@@ -1188,20 +1189,12 @@
 
 
     // Convenience method for the contructor's audio buffer size check.
-    // preconditions:
-    //    mChannelCount is valid
-    //    mAudioFormat is AudioFormat.ENCODING_PCM_8BIT, AudioFormat.ENCODING_PCM_16BIT,
-    //                 or AudioFormat.ENCODING_PCM_FLOAT
     // postcondition:
     //    mNativeBufferSizeInBytes is valid (multiple of frame size, positive)
     private void audioBuffSizeCheck(int audioBufferSize) throws IllegalArgumentException {
-        // NB: this section is only valid with PCM data.
-        // To update when supporting compressed formats
-        int frameSizeInBytes = mChannelCount
-            * (AudioFormat.getBytesPerSample(mAudioFormat));
-        if ((audioBufferSize % frameSizeInBytes != 0) || (audioBufferSize < 1)) {
+        if ((audioBufferSize % getFormat().getFrameSizeInBytes() != 0) || (audioBufferSize < 1)) {
             throw new IllegalArgumentException("Invalid audio buffer size " + audioBufferSize
-                    + " (frame size " + frameSizeInBytes + ")");
+                    + " (frame size " + getFormat().getFrameSizeInBytes() + ")");
         }
 
         mNativeBufferSizeInBytes = audioBufferSize;
diff --git a/media/java/android/media/MediaCas.java b/media/java/android/media/MediaCas.java
index 0a0a626..ab7c27f 100644
--- a/media/java/android/media/MediaCas.java
+++ b/media/java/android/media/MediaCas.java
@@ -272,7 +272,7 @@
                         Log.d(TAG, "Trying to get AIDL service");
                         IMediaCasService serviceAidl =
                                 IMediaCasService.Stub.asInterface(
-                                        ServiceManager.getService(
+                                        ServiceManager.waitForDeclaredService(
                                                 IMediaCasService.DESCRIPTOR + "/default"));
                         if (serviceAidl != null) {
                             return serviceAidl;
diff --git a/media/jni/Android.bp b/media/jni/Android.bp
index 6031ef7..94fce79 100644
--- a/media/jni/Android.bp
+++ b/media/jni/Android.bp
@@ -122,11 +122,6 @@
         "-Wunused",
         "-Wunreachable-code",
     ],
-
-    // Workaround Clang LTO crash.
-    lto: {
-        never: true,
-    },
 }
 
 cc_library_shared {
diff --git a/media/jni/audioeffect/Android.bp b/media/jni/audioeffect/Android.bp
index 8b5b726..cf5059c 100644
--- a/media/jni/audioeffect/Android.bp
+++ b/media/jni/audioeffect/Android.bp
@@ -44,9 +44,4 @@
         "-Wunreachable-code",
         "-DANDROID_UTILS_REF_BASE_DISABLE_IMPLICIT_CONSTRUCTION",
     ],
-
-    // Workaround Clang LTO crash.
-    lto: {
-        never: true,
-    },
 }
diff --git a/mime/java-res/android.mime.types b/mime/java-res/android.mime.types
index cb74cfc..fbdfe3e 100644
--- a/mime/java-res/android.mime.types
+++ b/mime/java-res/android.mime.types
@@ -54,6 +54,8 @@
 ?application/ttml+xml ttml dfxp
 ?application/vnd.android.ota ota
 ?application/vnd.apple.mpegurl m3u8
+?application/vnd.apple.pkpass pkpass
+?application/vnd.apple.pkpasses pkpasses
 ?application/vnd.ms-pki.stl stl
 ?application/vnd.ms-powerpoint pot
 ?application/vnd.ms-wpl wpl
diff --git a/nfc/Android.bp b/nfc/Android.bp
new file mode 100644
index 0000000..bf9f47c
--- /dev/null
+++ b/nfc/Android.bp
@@ -0,0 +1,51 @@
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "frameworks_base_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["frameworks_base_license"],
+}
+
+filegroup {
+    name: "framework-nfc-non-updatable-sources",
+    path: "java",
+    srcs: [],
+}
+
+filegroup {
+    name: "framework-nfc-updatable-sources",
+    path: "java",
+    srcs: [
+        "java/**/*.java",
+        "java/**/*.aidl",
+    ],
+    exclude_srcs: [
+        ":framework-nfc-non-updatable-sources",
+    ],
+}
+
+java_sdk_library {
+    name: "framework-nfc",
+    libs: [
+        "unsupportedappusage", // for android.compat.annotation.UnsupportedAppUsage
+    ],
+    srcs: [
+        ":framework-nfc-updatable-sources",
+    ],
+    defaults: ["framework-non-updatable-unbundled-defaults"],
+    permitted_packages: [
+        "android.nfc",
+        "com.android.nfc",
+    ],
+    hidden_api_packages: [
+        "com.android.nfc",
+    ],
+    aidl: {
+        include_dirs: [
+	    // TODO (b/303286040): Remove these when we change to |framework-module-defaults|
+            "frameworks/base/nfc/java",
+            "frameworks/base/core/java",
+        ],
+    },
+}
diff --git a/nfc/OWNERS b/nfc/OWNERS
new file mode 100644
index 0000000..35e9713
--- /dev/null
+++ b/nfc/OWNERS
@@ -0,0 +1,2 @@
+# Bug component: 48448
+include platform/packages/apps/Nfc:/OWNERS
diff --git a/nfc/TEST_MAPPING b/nfc/TEST_MAPPING
new file mode 100644
index 0000000..5b5ea37
--- /dev/null
+++ b/nfc/TEST_MAPPING
@@ -0,0 +1,10 @@
+{
+  "presubmit": [
+    {
+      "name": "NfcManagerTests"
+    },
+    {
+      "name": "CtsNfcTestCases"
+    }
+  ]
+}
diff --git a/nfc/api/current.txt b/nfc/api/current.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/nfc/api/current.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/nfc/api/module-lib-current.txt b/nfc/api/module-lib-current.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/nfc/api/module-lib-current.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/nfc/api/module-lib-removed.txt b/nfc/api/module-lib-removed.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/nfc/api/module-lib-removed.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/nfc/api/removed.txt b/nfc/api/removed.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/nfc/api/removed.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/nfc/api/system-current.txt b/nfc/api/system-current.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/nfc/api/system-current.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/nfc/api/system-removed.txt b/nfc/api/system-removed.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/nfc/api/system-removed.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/nfc/api/test-current.txt b/nfc/api/test-current.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/nfc/api/test-current.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/nfc/api/test-removed.txt b/nfc/api/test-removed.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/nfc/api/test-removed.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/nfc/java/android/nfc/Placeholder.java b/nfc/java/android/nfc/Placeholder.java
new file mode 100644
index 0000000..3509644
--- /dev/null
+++ b/nfc/java/android/nfc/Placeholder.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.nfc;
+
+/**
+ * Placeholder class so new framework-nfc module isn't empty, will be removed once module is
+ * populated.
+ *
+ * @hide
+ *
+ */
+public class Placeholder {
+}
diff --git a/packages/CrashRecovery/OWNERS b/packages/CrashRecovery/OWNERS
new file mode 100644
index 0000000..daa0211
--- /dev/null
+++ b/packages/CrashRecovery/OWNERS
@@ -0,0 +1,3 @@
+ancr@google.com
+harshitmahajan@google.com
+robertogil@google.com
diff --git a/packages/CrashRecovery/framework/Android.bp b/packages/CrashRecovery/framework/Android.bp
new file mode 100644
index 0000000..b2af315
--- /dev/null
+++ b/packages/CrashRecovery/framework/Android.bp
@@ -0,0 +1,9 @@
+filegroup {
+    name: "framework-crashrecovery-sources",
+    srcs: [
+        "java/**/*.java",
+        "java/**/*.aidl",
+    ],
+    path: "java",
+    visibility: ["//frameworks/base:__subpackages__"],
+}
diff --git a/core/java/android/service/watchdog/ExplicitHealthCheckService.java b/packages/CrashRecovery/framework/java/android/service/watchdog/ExplicitHealthCheckService.java
similarity index 100%
rename from core/java/android/service/watchdog/ExplicitHealthCheckService.java
rename to packages/CrashRecovery/framework/java/android/service/watchdog/ExplicitHealthCheckService.java
diff --git a/core/java/android/service/watchdog/IExplicitHealthCheckService.aidl b/packages/CrashRecovery/framework/java/android/service/watchdog/IExplicitHealthCheckService.aidl
similarity index 96%
rename from core/java/android/service/watchdog/IExplicitHealthCheckService.aidl
rename to packages/CrashRecovery/framework/java/android/service/watchdog/IExplicitHealthCheckService.aidl
index 78c0328..9096509 100644
--- a/core/java/android/service/watchdog/IExplicitHealthCheckService.aidl
+++ b/packages/CrashRecovery/framework/java/android/service/watchdog/IExplicitHealthCheckService.aidl
@@ -21,6 +21,7 @@
 /**
  * @hide
  */
+@PermissionManuallyEnforced
 oneway interface IExplicitHealthCheckService
 {
     void setCallback(in @nullable RemoteCallback callback);
diff --git a/core/java/android/service/watchdog/OWNERS b/packages/CrashRecovery/framework/java/android/service/watchdog/OWNERS
similarity index 100%
rename from core/java/android/service/watchdog/OWNERS
rename to packages/CrashRecovery/framework/java/android/service/watchdog/OWNERS
diff --git a/core/java/android/service/watchdog/PackageConfig.aidl b/packages/CrashRecovery/framework/java/android/service/watchdog/PackageConfig.aidl
similarity index 100%
rename from core/java/android/service/watchdog/PackageConfig.aidl
rename to packages/CrashRecovery/framework/java/android/service/watchdog/PackageConfig.aidl
diff --git a/packages/CrashRecovery/services/Android.bp b/packages/CrashRecovery/services/Android.bp
new file mode 100644
index 0000000..27ddff9
--- /dev/null
+++ b/packages/CrashRecovery/services/Android.bp
@@ -0,0 +1,9 @@
+filegroup {
+    name: "services-crashrecovery-sources",
+    srcs: [
+        "java/**/*.java",
+        "java/**/*.aidl",
+    ],
+    path: "java",
+    visibility: ["//frameworks/base:__subpackages__"],
+}
diff --git a/services/core/java/com/android/server/ExplicitHealthCheckController.java b/packages/CrashRecovery/services/java/com/android/server/ExplicitHealthCheckController.java
similarity index 100%
rename from services/core/java/com/android/server/ExplicitHealthCheckController.java
rename to packages/CrashRecovery/services/java/com/android/server/ExplicitHealthCheckController.java
diff --git a/services/core/java/com/android/server/PackageWatchdog.java b/packages/CrashRecovery/services/java/com/android/server/PackageWatchdog.java
similarity index 100%
rename from services/core/java/com/android/server/PackageWatchdog.java
rename to packages/CrashRecovery/services/java/com/android/server/PackageWatchdog.java
diff --git a/services/core/java/com/android/server/RescueParty.java b/packages/CrashRecovery/services/java/com/android/server/RescueParty.java
similarity index 100%
rename from services/core/java/com/android/server/RescueParty.java
rename to packages/CrashRecovery/services/java/com/android/server/RescueParty.java
diff --git a/services/core/java/com/android/server/rollback/RollbackPackageHealthObserver.java b/packages/CrashRecovery/services/java/com/android/server/rollback/RollbackPackageHealthObserver.java
similarity index 100%
rename from services/core/java/com/android/server/rollback/RollbackPackageHealthObserver.java
rename to packages/CrashRecovery/services/java/com/android/server/rollback/RollbackPackageHealthObserver.java
diff --git a/services/core/java/com/android/server/rollback/WatchdogRollbackLogger.java b/packages/CrashRecovery/services/java/com/android/server/rollback/WatchdogRollbackLogger.java
similarity index 100%
rename from services/core/java/com/android/server/rollback/WatchdogRollbackLogger.java
rename to packages/CrashRecovery/services/java/com/android/server/rollback/WatchdogRollbackLogger.java
diff --git a/packages/PackageInstaller/src/com/android/packageinstaller/InstallInstalling.java b/packages/PackageInstaller/src/com/android/packageinstaller/InstallInstalling.java
index 1088ace..4992ef1 100644
--- a/packages/PackageInstaller/src/com/android/packageinstaller/InstallInstalling.java
+++ b/packages/PackageInstaller/src/com/android/packageinstaller/InstallInstalling.java
@@ -290,7 +290,14 @@
                         broadcastIntent,
                         PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_MUTABLE);
 
-                session.commit(pendingIntent.getIntentSender());
+                try {
+                    session.commit(pendingIntent.getIntentSender());
+                } catch (Exception e) {
+                    Log.e(LOG_TAG, "Cannot install package: ", e);
+                    launchFailure(PackageInstaller.STATUS_FAILURE,
+                        PackageManager.INSTALL_FAILED_INTERNAL_ERROR, null);
+                    return;
+                }
                 mCancelButton.setEnabled(false);
                 setFinishOnTouchOutside(false);
             } else {
diff --git a/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java b/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java
index ed5654d..ec50323 100644
--- a/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java
+++ b/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java
@@ -2432,9 +2432,7 @@
                     R.bool.def_auto_time_zone); // Sync timezone to NITZ
 
             loadSetting(stmt, Settings.Global.STAY_ON_WHILE_PLUGGED_IN,
-                    ("1".equals(SystemProperties.get("ro.boot.qemu"))
-                        || res.getBoolean(R.bool.def_stay_on_while_plugged_in))
-                     ? 1 : 0);
+                    res.getBoolean(R.bool.def_stay_on_while_plugged_in) ? 1 : 0);
 
             loadIntegerSetting(stmt, Settings.Global.WIFI_SLEEP_POLICY,
                     R.integer.def_wifi_sleep_policy);
diff --git a/packages/SystemUI/src/com/android/systemui/clipboardoverlay/ClipboardListener.java b/packages/SystemUI/src/com/android/systemui/clipboardoverlay/ClipboardListener.java
index 63b4288..e0ce3db 100644
--- a/packages/SystemUI/src/com/android/systemui/clipboardoverlay/ClipboardListener.java
+++ b/packages/SystemUI/src/com/android/systemui/clipboardoverlay/ClipboardListener.java
@@ -27,7 +27,7 @@
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
-import android.os.SystemProperties;
+import android.os.Build;
 import android.provider.Settings;
 import android.util.Log;
 
@@ -87,7 +87,7 @@
         String clipSource = mClipboardManager.getPrimaryClipSource();
         ClipData clipData = mClipboardManager.getPrimaryClip();
 
-        if (shouldSuppressOverlay(clipData, clipSource, isEmulator())) {
+        if (shouldSuppressOverlay(clipData, clipSource, Build.IS_EMULATOR)) {
             Log.i(TAG, "Clipboard overlay suppressed.");
             return;
         }
@@ -141,10 +141,6 @@
         return true;
     }
 
-    private static boolean isEmulator() {
-        return SystemProperties.getBoolean("ro.boot.qemu", false);
-    }
-
     private boolean isUserSetupComplete() {
         return Settings.Secure.getInt(mContext.getContentResolver(),
                 SETTINGS_SECURE_USER_SETUP_COMPLETE, 0) == 1;
diff --git a/packages/SystemUI/src/com/android/systemui/people/PeopleTileViewHelper.java b/packages/SystemUI/src/com/android/systemui/people/PeopleTileViewHelper.java
index 67e9664..27e6895 100644
--- a/packages/SystemUI/src/com/android/systemui/people/PeopleTileViewHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/people/PeopleTileViewHelper.java
@@ -165,6 +165,9 @@
                     + "\\p{Emoji}(\\p{EMod}|\\x{FE0F}\\x{20E3}?|[\\x{E0020}-\\x{E007E}]+\\x{E007F})"
                     + "?)*";
 
+    // Not all JDKs support emoji patterns, including the one errorprone runs under, which
+    // makes it think that this is an invalid pattern.
+    @SuppressWarnings("InvalidPatternSyntax")
     private static final Pattern EMOJI_PATTERN = Pattern.compile(UNICODE_EMOJI_REGEX);
 
     public static final String EMPTY_STRING = "";
diff --git a/packages/SystemUI/src/com/android/systemui/usb/UsbDebuggingActivity.java b/packages/SystemUI/src/com/android/systemui/usb/UsbDebuggingActivity.java
index 941cd77..900805f 100644
--- a/packages/SystemUI/src/com/android/systemui/usb/UsbDebuggingActivity.java
+++ b/packages/SystemUI/src/com/android/systemui/usb/UsbDebuggingActivity.java
@@ -25,6 +25,7 @@
 import android.content.IntentFilter;
 import android.debug.IAdbManager;
 import android.hardware.usb.UsbManager;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.ServiceManager;
@@ -69,8 +70,7 @@
         super.onCreate(icicle);
 
         // Emulator does not support reseating the usb cable to reshow the dialog.
-        boolean isEmulator = SystemProperties.get("ro.boot.qemu").equals("1");
-        if (SystemProperties.getInt("service.adb.tcp.port", 0) == 0 && !isEmulator) {
+        if (SystemProperties.getInt("service.adb.tcp.port", 0) == 0 && !Build.IS_EMULATOR) {
             mDisconnectedReceiver = new UsbDisconnectedReceiver(this);
             IntentFilter filter = new IntentFilter(UsbManager.ACTION_USB_STATE);
             mBroadcastDispatcher.registerReceiver(mDisconnectedReceiver, filter);
diff --git a/services/Android.bp b/services/Android.bp
index 0f6b984..e4fe581 100644
--- a/services/Android.bp
+++ b/services/Android.bp
@@ -43,7 +43,10 @@
     name: "system_optimized_java_defaults",
     module_type: "java_defaults",
     config_namespace: "ANDROID",
-    bool_variables: ["SYSTEM_OPTIMIZE_JAVA"],
+    bool_variables: [
+        "SYSTEM_OPTIMIZE_JAVA",
+        "FULL_SYSTEM_OPTIMIZE_JAVA",
+    ],
     properties: ["optimize"],
 }
 
@@ -55,6 +58,7 @@
                 enabled: true,
                 // TODO(b/210510433): Enable optimizations after improving
                 // retracing infra.
+                // See also FULL_SYSTEM_OPTIMIZE_JAVA.
                 optimize: false,
                 shrink: true,
                 ignore_warnings: false,
@@ -78,6 +82,12 @@
                 },
             },
         },
+        // Allow form factors to opt-in full system java optimization
+        FULL_SYSTEM_OPTIMIZE_JAVA: {
+            optimize: {
+                optimize: true,
+            },
+        },
     },
 }
 
diff --git a/services/companion/java/com/android/server/companion/virtual/OWNERS b/services/companion/java/com/android/server/companion/virtual/OWNERS
index 5295ec8..4fe0592 100644
--- a/services/companion/java/com/android/server/companion/virtual/OWNERS
+++ b/services/companion/java/com/android/server/companion/virtual/OWNERS
@@ -2,7 +2,7 @@
 
 set noparent
 
-ogunwale@google.com
-michaelwr@google.com
+marvinramin@google.com
 vladokom@google.com
-marvinramin@google.com
\ No newline at end of file
+ogunwale@google.com
+michaelwr@google.com
\ No newline at end of file
diff --git a/services/core/Android.bp b/services/core/Android.bp
index 22f8570..37976b5 100644
--- a/services/core/Android.bp
+++ b/services/core/Android.bp
@@ -122,6 +122,9 @@
         "java/com/android/server/am/EventLogTags.logtags",
         "java/com/android/server/wm/EventLogTags.logtags",
         "java/com/android/server/policy/EventLogTags.logtags",
+
+        // Java/AIDL sources to be moved out to CrashRecovery module
+        ":services-crashrecovery-sources",
     ],
 
     libs: [
@@ -130,7 +133,6 @@
         "android.hardware.light-V2.0-java",
         "android.hardware.gnss-V2-java",
         "android.hardware.vibrator-V2-java",
-        "android.nfc.flags-aconfig-java",
         "app-compat-annotations",
         "framework-tethering.stubs.module_lib",
         "service-art.stubs.system_server",
@@ -153,7 +155,7 @@
         "android.hardware.boot-V1.0-java", // HIDL
         "android.hardware.boot-V1.1-java", // HIDL
         "android.hardware.boot-V1.2-java", // HIDL
-        "android.hardware.boot-V1-java",   // AIDL
+        "android.hardware.boot-V1-java", // AIDL
         "android.hardware.broadcastradio-V2.0-java", // HIDL
         "android.hardware.broadcastradio-V1-java", // AIDL
         "android.hardware.health-V1.0-java", // HIDL
diff --git a/services/core/java/com/android/server/BootReceiver.java b/services/core/java/com/android/server/BootReceiver.java
index 572e9c2..926d7a4 100644
--- a/services/core/java/com/android/server/BootReceiver.java
+++ b/services/core/java/com/android/server/BootReceiver.java
@@ -62,6 +62,7 @@
 import java.nio.file.attribute.PosixFilePermissions;
 import java.util.HashMap;
 import java.util.Iterator;
+import java.util.concurrent.locks.ReentrantLock;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -328,9 +329,11 @@
      * @param tombstone path to the tombstone
      * @param proto whether the tombstone is stored as proto
      * @param processName the name of the process corresponding to the tombstone
+     * @param tmpFileLock the lock for reading/writing tmp files
      */
     public static void addTombstoneToDropBox(
-                Context ctx, File tombstone, boolean proto, String processName) {
+                Context ctx, File tombstone, boolean proto, String processName,
+                ReentrantLock tmpFileLock) {
         final DropBoxManager db = ctx.getSystemService(DropBoxManager.class);
         if (db == null) {
             Slog.e(TAG, "Can't log tombstone: DropBoxManager not available");
@@ -351,39 +354,11 @@
                     // due to rate limiting. Do this by enclosing the proto tombsstone in a
                     // container proto that has the dropped entry count and the proto tombstone as
                     // bytes (to avoid the complexity of reading and writing nested protos).
-
-                    // Read the proto tombstone file as bytes.
-                    final byte[] tombstoneBytes = Files.readAllBytes(tombstone.toPath());
-
-                    final File tombstoneProtoWithHeaders = File.createTempFile(
-                            tombstone.getName(), ".tmp", TOMBSTONE_TMP_DIR);
-                    Files.setPosixFilePermissions(
-                            tombstoneProtoWithHeaders.toPath(),
-                            PosixFilePermissions.fromString("rw-rw----"));
-
-                    // Write the new proto container proto with headers.
-                    ParcelFileDescriptor pfd;
+                    tmpFileLock.lock();
                     try {
-                        pfd = ParcelFileDescriptor.open(tombstoneProtoWithHeaders, MODE_READ_WRITE);
-
-                        ProtoOutputStream protoStream = new ProtoOutputStream(
-                                pfd.getFileDescriptor());
-                        protoStream.write(TombstoneWithHeadersProto.TOMBSTONE, tombstoneBytes);
-                        protoStream.write(
-                                TombstoneWithHeadersProto.DROPPED_COUNT,
-                                rateLimitResult.droppedCountSinceRateLimitActivated());
-                        protoStream.flush();
-
-                        // Add the proto to dropbox.
-                        db.addFile(TAG_TOMBSTONE_PROTO_WITH_HEADERS, tombstoneProtoWithHeaders, 0);
-                    } catch (FileNotFoundException ex) {
-                        Slog.e(TAG, "failed to open for write: " + tombstoneProtoWithHeaders, ex);
-                        throw ex;
+                        addAugmentedProtoToDropbox(tombstone, db, rateLimitResult);
                     } finally {
-                        // Remove the temporary file.
-                        if (tombstoneProtoWithHeaders != null) {
-                            tombstoneProtoWithHeaders.delete();
-                        }
+                        tmpFileLock.unlock();
                     }
                 }
             } else {
@@ -399,6 +374,44 @@
         writeTimestamps(timestamps);
     }
 
+    private static void addAugmentedProtoToDropbox(
+                File tombstone, DropBoxManager db,
+                DropboxRateLimiter.RateLimitResult rateLimitResult) throws IOException {
+        // Read the proto tombstone file as bytes.
+        final byte[] tombstoneBytes = Files.readAllBytes(tombstone.toPath());
+
+        final File tombstoneProtoWithHeaders = File.createTempFile(
+                tombstone.getName(), ".tmp", TOMBSTONE_TMP_DIR);
+        Files.setPosixFilePermissions(
+                tombstoneProtoWithHeaders.toPath(),
+                PosixFilePermissions.fromString("rw-rw----"));
+
+        // Write the new proto container proto with headers.
+        try (ParcelFileDescriptor pfd = ParcelFileDescriptor.open(
+                    tombstoneProtoWithHeaders, MODE_READ_WRITE)) {
+            ProtoOutputStream protoStream =
+                    new ProtoOutputStream(pfd.getFileDescriptor());
+            protoStream.write(TombstoneWithHeadersProto.TOMBSTONE, tombstoneBytes);
+            protoStream.write(
+                    TombstoneWithHeadersProto.DROPPED_COUNT,
+                    rateLimitResult.droppedCountSinceRateLimitActivated());
+            protoStream.flush();
+
+            // Add the proto to dropbox.
+            db.addFile(TAG_TOMBSTONE_PROTO_WITH_HEADERS, tombstoneProtoWithHeaders, 0);
+        } catch (FileNotFoundException ex) {
+            Slog.e(TAG, "failed to open for write: " + tombstoneProtoWithHeaders, ex);
+            throw ex;
+        } catch (IOException ex) {
+            Slog.e(TAG, "IO exception during write: " + tombstoneProtoWithHeaders, ex);
+        } finally {
+            // Remove the temporary file and unlock the lock.
+            if (tombstoneProtoWithHeaders != null) {
+                tombstoneProtoWithHeaders.delete();
+            }
+        }
+    }
+
     private static void addLastkToDropBox(
             DropBoxManager db, HashMap<String, Long> timestamps,
             String headers, String footers, String filename, int maxSize,
diff --git a/services/core/java/com/android/server/OWNERS b/services/core/java/com/android/server/OWNERS
index 987507f..3aa275c 100644
--- a/services/core/java/com/android/server/OWNERS
+++ b/services/core/java/com/android/server/OWNERS
@@ -1,5 +1,5 @@
-# BootReceiver
-per-file BootReceiver.java = gaillard@google.com
+# BootReceiver / Watchdog
+per-file BootReceiver.java,Watchdog.java = gaillard@google.com
 
 # Connectivity / Networking
 per-file ConnectivityService.java,ConnectivityServiceInitializer.java,NetworkManagementService.java,NsdService.java,VpnManagerService.java = file:/services/core/java/com/android/server/net/OWNERS
diff --git a/services/core/java/com/android/server/VpnManagerService.java b/services/core/java/com/android/server/VpnManagerService.java
index 0d423d8..2ba3a1d 100644
--- a/services/core/java/com/android/server/VpnManagerService.java
+++ b/services/core/java/com/android/server/VpnManagerService.java
@@ -33,7 +33,6 @@
 import android.net.ConnectivityManager;
 import android.net.INetd;
 import android.net.IVpnManager;
-import android.net.LinkProperties;
 import android.net.Network;
 import android.net.NetworkStack;
 import android.net.UnderlyingNetworkInfo;
@@ -437,16 +436,9 @@
             throw new UnsupportedOperationException("Legacy VPN is deprecated");
         }
         int user = UserHandle.getUserId(mDeps.getCallingUid());
-        // Note that if the caller is not system (uid >= Process.FIRST_APPLICATION_UID),
-        // the code might not work well since getActiveNetwork might return null if the uid is
-        // blocked by NetworkPolicyManagerService.
-        final LinkProperties egress = mCm.getLinkProperties(mCm.getActiveNetwork());
-        if (egress == null) {
-            throw new IllegalStateException("Missing active network connection");
-        }
         synchronized (mVpns) {
             throwIfLockdownEnabled();
-            mVpns.get(user).startLegacyVpn(profile, null /* underlying */, egress);
+            mVpns.get(user).startLegacyVpn(profile);
         }
     }
 
diff --git a/services/core/java/com/android/server/adb/AdbDebuggingManager.java b/services/core/java/com/android/server/adb/AdbDebuggingManager.java
index 6794f75..3280afdf 100644
--- a/services/core/java/com/android/server/adb/AdbDebuggingManager.java
+++ b/services/core/java/com/android/server/adb/AdbDebuggingManager.java
@@ -1797,8 +1797,13 @@
                 mFingerprints);
 
         try {
-            dump.write("user_keys", AdbDebuggingManagerProto.USER_KEYS,
-                    FileUtils.readTextFile(new File("/data/misc/adb/adb_keys"), 0, null));
+            File userKeys = new File("/data/misc/adb/adb_keys");
+            if (userKeys.exists()) {
+                dump.write("user_keys", AdbDebuggingManagerProto.USER_KEYS,
+                           FileUtils.readTextFile(userKeys, 0, null));
+            } else {
+                Slog.i(TAG, "No user keys on this device");
+            }
         } catch (IOException e) {
             Slog.i(TAG, "Cannot read user keys", e);
         }
diff --git a/services/core/java/com/android/server/am/ActivityManagerShellCommand.java b/services/core/java/com/android/server/am/ActivityManagerShellCommand.java
index d56448d..469582d 100644
--- a/services/core/java/com/android/server/am/ActivityManagerShellCommand.java
+++ b/services/core/java/com/android/server/am/ActivityManagerShellCommand.java
@@ -4122,7 +4122,7 @@
             pw.println("      -D: enable debugging");
             pw.println("      --suspend: debugged app suspend threads at startup (only with -D)");
             pw.println("      -N: enable native debugging");
-            pw.println("      -W: wait for launch to complete");
+            pw.println("      -W: wait for launch to complete (initial display)");
             pw.println("      --start-profiler <FILE>: start profiler and send results to <FILE>");
             pw.println("      --sampling INTERVAL: use sample profiling with INTERVAL microseconds");
             pw.println("          between samples (use with --start-profiler)");
diff --git a/services/core/java/com/android/server/am/BatteryStatsService.java b/services/core/java/com/android/server/am/BatteryStatsService.java
index dc6f858..7dac241 100644
--- a/services/core/java/com/android/server/am/BatteryStatsService.java
+++ b/services/core/java/com/android/server/am/BatteryStatsService.java
@@ -17,7 +17,6 @@
 package com.android.server.am;
 
 import static android.Manifest.permission.BATTERY_STATS;
-import static android.Manifest.permission.BLUETOOTH_CONNECT;
 import static android.Manifest.permission.DEVICE_POWER;
 import static android.Manifest.permission.NETWORK_STACK;
 import static android.Manifest.permission.POWER_SAVER;
@@ -103,6 +102,7 @@
 import com.android.internal.util.FrameworkStatsLog;
 import com.android.internal.util.ParseUtils;
 import com.android.internal.util.function.pooled.PooledLambda;
+import com.android.modules.utils.build.SdkLevel;
 import com.android.net.module.util.NetworkCapabilitiesUtils;
 import com.android.server.LocalServices;
 import com.android.server.Watchdog;
@@ -426,7 +426,12 @@
                 ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE));
         final ConnectivityManager cm = mContext.getSystemService(ConnectivityManager.class);
         try {
-            nms.registerObserver(mActivityChangeObserver);
+            if (!SdkLevel.isAtLeastV()) {
+                // On V+ devices, ConnectivityService calls BatteryStats API to update
+                // RadioPowerState change. So BatteryStatsService registers the callback only on
+                // pre V devices.
+                nms.registerObserver(mActivityChangeObserver);
+            }
             cm.registerDefaultNetworkCallback(mNetworkCallback);
         } catch (RemoteException e) {
             Slog.e(TAG, "Could not register INetworkManagement event observer " + e);
diff --git a/services/core/java/com/android/server/am/BroadcastProcessQueue.java b/services/core/java/com/android/server/am/BroadcastProcessQueue.java
index 0fcec6f..c26fd5d 100644
--- a/services/core/java/com/android/server/am/BroadcastProcessQueue.java
+++ b/services/core/java/com/android/server/am/BroadcastProcessQueue.java
@@ -258,13 +258,6 @@
     @Nullable
     public BroadcastRecord enqueueOrReplaceBroadcast(@NonNull BroadcastRecord record,
             int recordIndex, @NonNull BroadcastConsumer deferredStatesApplyConsumer) {
-        // When updateDeferredStates() has already applied a deferred state to
-        // all pending items, apply to this new broadcast too
-        if (mLastDeferredStates && record.deferUntilActive
-                && (record.getDeliveryState(recordIndex) == BroadcastRecord.DELIVERY_PENDING)) {
-            deferredStatesApplyConsumer.accept(record, recordIndex);
-        }
-
         // Ignore FLAG_RECEIVER_REPLACE_PENDING if the sender specified the policy using the
         // BroadcastOptions delivery group APIs.
         if (record.isReplacePending()
@@ -287,6 +280,13 @@
         // with implicit responsiveness expectations.
         getQueueForBroadcast(record).addLast(newBroadcastArgs);
         onBroadcastEnqueued(record, recordIndex);
+
+        // When updateDeferredStates() has already applied a deferred state to
+        // all pending items, apply to this new broadcast too
+        if (mLastDeferredStates && shouldBeDeferred()
+                && (record.getDeliveryState(recordIndex) == BroadcastRecord.DELIVERY_PENDING)) {
+            deferredStatesApplyConsumer.accept(record, recordIndex);
+        }
         return null;
     }
 
@@ -1144,9 +1144,6 @@
             } else if (mProcessPersistent) {
                 mRunnableAt = runnableAt + constants.DELAY_PERSISTENT_PROC_MILLIS;
                 mRunnableAtReason = REASON_PERSISTENT;
-            } else if (UserHandle.isCore(uid)) {
-                mRunnableAt = runnableAt;
-                mRunnableAtReason = REASON_CORE_UID;
             } else if (mCountOrdered > 0) {
                 mRunnableAt = runnableAt;
                 mRunnableAtReason = REASON_CONTAINS_ORDERED;
@@ -1193,6 +1190,9 @@
                 // is already cached, they'll be deferred on the line above
                 mRunnableAt = runnableAt;
                 mRunnableAtReason = REASON_CONTAINS_RESULT_TO;
+            } else if (UserHandle.isCore(uid)) {
+                mRunnableAt = runnableAt;
+                mRunnableAtReason = REASON_CORE_UID;
             } else {
                 mRunnableAt = runnableAt + constants.DELAY_NORMAL_MILLIS;
                 mRunnableAtReason = REASON_NORMAL;
@@ -1221,32 +1221,45 @@
     }
 
     /**
-     * Update {@link BroadcastRecord.DELIVERY_DEFERRED} states of all our
+     * Update {@link BroadcastRecord#DELIVERY_DEFERRED} states of all our
      * pending broadcasts, when needed.
      */
     void updateDeferredStates(@NonNull BroadcastConsumer applyConsumer,
             @NonNull BroadcastConsumer clearConsumer) {
         // When all we have pending is deferred broadcasts, and we're cached,
         // then we want everything to be marked deferred
-        final boolean wantDeferredStates = (mCountDeferred > 0)
-                && (mCountDeferred == mCountEnqueued) && mProcessFreezable;
+        final boolean wantDeferredStates = shouldBeDeferred();
 
         if (mLastDeferredStates != wantDeferredStates) {
             mLastDeferredStates = wantDeferredStates;
             if (wantDeferredStates) {
                 forEachMatchingBroadcast((r, i) -> {
-                    return r.deferUntilActive
-                            && (r.getDeliveryState(i) == BroadcastRecord.DELIVERY_PENDING);
+                    return (r.getDeliveryState(i) == BroadcastRecord.DELIVERY_PENDING);
                 }, applyConsumer, false);
             } else {
                 forEachMatchingBroadcast((r, i) -> {
-                    return r.deferUntilActive
-                            && (r.getDeliveryState(i) == BroadcastRecord.DELIVERY_DEFERRED);
+                    return (r.getDeliveryState(i) == BroadcastRecord.DELIVERY_DEFERRED);
                 }, clearConsumer, false);
             }
         }
     }
 
+    void clearDeferredStates(@NonNull BroadcastConsumer clearConsumer) {
+        if (mLastDeferredStates) {
+            mLastDeferredStates = false;
+            forEachMatchingBroadcast((r, i) -> {
+                return (r.getDeliveryState(i) == BroadcastRecord.DELIVERY_DEFERRED);
+            }, clearConsumer, false);
+        }
+    }
+
+    @VisibleForTesting
+    boolean shouldBeDeferred() {
+        if (mRunnableAtInvalidated) updateRunnableAt();
+        return mRunnableAtReason == REASON_CACHED
+                || mRunnableAtReason == REASON_CACHED_INFINITE_DEFER;
+    }
+
     /**
      * Check overall health, confirming things are in a reasonable state and
      * that we're not wedged.
diff --git a/services/core/java/com/android/server/am/BroadcastQueueModernImpl.java b/services/core/java/com/android/server/am/BroadcastQueueModernImpl.java
index f420619..abec890 100644
--- a/services/core/java/com/android/server/am/BroadcastQueueModernImpl.java
+++ b/services/core/java/com/android/server/am/BroadcastQueueModernImpl.java
@@ -249,6 +249,7 @@
     private static final int MSG_CHECK_HEALTH = 5;
     private static final int MSG_CHECK_PENDING_COLD_START_VALIDITY = 6;
     private static final int MSG_PROCESS_FREEZABLE_CHANGED = 7;
+    private static final int MSG_UID_STATE_CHANGED = 8;
 
     private void enqueueUpdateRunningList() {
         mLocalHandler.removeMessages(MSG_UPDATE_RUNNING_LIST);
@@ -295,6 +296,19 @@
                 }
                 return true;
             }
+            case MSG_UID_STATE_CHANGED: {
+                final int uid = (int) msg.obj;
+                final int procState = msg.arg1;
+                synchronized (mService) {
+                    if (procState == ActivityManager.PROCESS_STATE_TOP) {
+                        mUidForeground.put(uid, true);
+                    } else {
+                        mUidForeground.delete(uid);
+                    }
+                    refreshProcessQueuesLocked(uid);
+                }
+                return true;
+            }
         }
         return false;
     };
@@ -450,6 +464,10 @@
                 break;
             }
 
+            // Clear the deferred state of broadcasts in this queue as we are just about to
+            // deliver broadcasts to this process.
+            queue.clearDeferredStates(mBroadcastConsumerDeferClear);
+
             // We might not have heard about a newly running process yet, so
             // consider refreshing if we think we're cold
             updateWarmProcess(queue);
@@ -672,7 +690,7 @@
     @Override
     public void onProcessFreezableChangedLocked(@NonNull ProcessRecord app) {
         mLocalHandler.removeMessages(MSG_PROCESS_FREEZABLE_CHANGED, app);
-        mLocalHandler.sendMessage(mHandler.obtainMessage(MSG_PROCESS_FREEZABLE_CHANGED, app));
+        mLocalHandler.obtainMessage(MSG_PROCESS_FREEZABLE_CHANGED, app).sendToTarget();
     }
 
     @Override
@@ -1510,12 +1528,14 @@
         r.resultExtras = null;
     };
 
-    private final BroadcastConsumer mBroadcastConsumerDeferApply = (r, i) -> {
+    @VisibleForTesting
+    final BroadcastConsumer mBroadcastConsumerDeferApply = (r, i) -> {
         setDeliveryState(null, null, r, i, r.receivers.get(i), BroadcastRecord.DELIVERY_DEFERRED,
                 "mBroadcastConsumerDeferApply");
     };
 
-    private final BroadcastConsumer mBroadcastConsumerDeferClear = (r, i) -> {
+    @VisibleForTesting
+    final BroadcastConsumer mBroadcastConsumerDeferClear = (r, i) -> {
         setDeliveryState(null, null, r, i, r.receivers.get(i), BroadcastRecord.DELIVERY_PENDING,
                 "mBroadcastConsumerDeferClear");
     };
@@ -1601,14 +1621,9 @@
             @Override
             public void onUidStateChanged(int uid, int procState, long procStateSeq,
                     int capability) {
-                synchronized (mService) {
-                    if (procState == ActivityManager.PROCESS_STATE_TOP) {
-                        mUidForeground.put(uid, true);
-                    } else {
-                        mUidForeground.delete(uid);
-                    }
-                    refreshProcessQueuesLocked(uid);
-                }
+                mLocalHandler.removeMessages(MSG_UID_STATE_CHANGED, uid);
+                mLocalHandler.obtainMessage(MSG_UID_STATE_CHANGED, procState, 0, uid)
+                        .sendToTarget();
             }
         }, ActivityManager.UID_OBSERVER_PROCSTATE,
                 ActivityManager.PROCESS_STATE_TOP, "android");
diff --git a/services/core/java/com/android/server/appop/AppOpsCheckingServiceImpl.java b/services/core/java/com/android/server/appop/AppOpsCheckingServiceImpl.java
index 4dfd9b0..f0dd23c 100644
--- a/services/core/java/com/android/server/appop/AppOpsCheckingServiceImpl.java
+++ b/services/core/java/com/android/server/appop/AppOpsCheckingServiceImpl.java
@@ -221,20 +221,24 @@
         synchronized (mLock) {
             SparseIntArray opModes = mUidModes.get(uid, null);
             if (opModes == null) {
-                if (mode != defaultMode) {
-                    opModes = new SparseIntArray();
-                    mUidModes.put(uid, opModes);
-                    opModes.put(op, mode);
-                    scheduleWriteLocked();
+                if (mode == defaultMode) {
+                    return false;
                 }
+                opModes = new SparseIntArray();
+                mUidModes.put(uid, opModes);
+                opModes.put(op, mode);
+                scheduleWriteLocked();
             } else {
-                if (opModes.indexOfKey(op) >= 0 && opModes.get(op) == mode) {
+                if (opModes.indexOfKey(op) >= 0) {
+                    if (opModes.get(op) == mode) {
+                        return false;
+                    }
+                } else if (mode == defaultMode) {
                     return false;
                 }
                 if (mode == defaultMode) {
                     opModes.delete(op);
                     if (opModes.size() <= 0) {
-                        opModes = null;
                         mUidModes.delete(uid);
                     }
                 } else {
diff --git a/services/core/java/com/android/server/audio/SpatializerHelper.java b/services/core/java/com/android/server/audio/SpatializerHelper.java
index 18f24db..f465867 100644
--- a/services/core/java/com/android/server/audio/SpatializerHelper.java
+++ b/services/core/java/com/android/server/audio/SpatializerHelper.java
@@ -965,6 +965,11 @@
         if (mSpat == null) {
             mSpatCallback = new SpatializerCallback();
             mSpat = AudioSystem.getSpatializer(mSpatCallback);
+            if (mSpat == null) {
+                Log.e(TAG, "createSpat(): No Spatializer found");
+                postReset();
+                return;
+            }
             try {
                 //TODO: register heatracking callback only when sensors are registered
                 if (mIsHeadTrackingSupported) {
diff --git a/services/core/java/com/android/server/camera/CameraServiceProxy.java b/services/core/java/com/android/server/camera/CameraServiceProxy.java
index 3c885a1..3b18f0c 100644
--- a/services/core/java/com/android/server/camera/CameraServiceProxy.java
+++ b/services/core/java/com/android/server/camera/CameraServiceProxy.java
@@ -52,7 +52,6 @@
 import android.hardware.usb.UsbDevice;
 import android.hardware.usb.UsbManager;
 import android.media.AudioManager;
-import android.nfc.INfcAdapter;
 import android.nfc.NfcAdapter;
 import android.nfc.NfcManager;
 import android.os.Binder;
@@ -1252,45 +1251,19 @@
         }
     }
 
-    // TODO(b/303286040): Remove the raw INfcAdapter usage once |ENABLE_NFC_MAINLINE_FLAG| is
-    // rolled out.
-    private static final String NFC_SERVICE_BINDER_NAME = "nfc";
-    // Flags arguments to NFC adapter to enable/disable NFC
-    public static final int DISABLE_POLLING_FLAGS = 0x1000;
-    public static final int ENABLE_POLLING_FLAGS = 0x0000;
-    private void setNfcReaderModeUsingINfcAdapter(boolean enablePolling) {
-        IBinder nfcServiceBinder = getBinderService(NFC_SERVICE_BINDER_NAME);
-        if (nfcServiceBinder == null) {
+    private void notifyNfcService(boolean enablePolling) {
+        NfcManager nfcManager = mContext.getSystemService(NfcManager.class);
+        if (nfcManager == null) {
             Slog.w(TAG, "Could not connect to NFC service to notify it of camera state");
             return;
         }
-        INfcAdapter nfcAdapterRaw = INfcAdapter.Stub.asInterface(nfcServiceBinder);
-        int flags = enablePolling ? ENABLE_POLLING_FLAGS : DISABLE_POLLING_FLAGS;
-        if (DEBUG) Slog.v(TAG, "Setting NFC reader mode to flags " + flags);
-        try {
-            nfcAdapterRaw.setReaderMode(nfcInterfaceToken, null, flags, null);
-        } catch (RemoteException e) {
-            Slog.w(TAG, "Could not notify NFC service, remote exception: " + e);
+        NfcAdapter nfcAdapter = nfcManager.getDefaultAdapter();
+        if (nfcAdapter == null) {
+            Slog.w(TAG, "Could not connect to NFC service to notify it of camera state");
+            return;
         }
-    }
-
-    private void notifyNfcService(boolean enablePolling) {
-        if (android.nfc.Flags.enableNfcMainline()) {
-            NfcManager nfcManager = mContext.getSystemService(NfcManager.class);
-            if (nfcManager == null) {
-                Slog.w(TAG, "Could not connect to NFC service to notify it of camera state");
-                return;
-            }
-            NfcAdapter nfcAdapter = nfcManager.getDefaultAdapter();
-            if (nfcAdapter == null) {
-                Slog.w(TAG, "Could not connect to NFC service to notify it of camera state");
-                return;
-            }
-            if (DEBUG) Slog.v(TAG, "Setting NFC reader mode. enablePolling: " + enablePolling);
-            nfcAdapter.setReaderMode(enablePolling);
-        } else {
-            setNfcReaderModeUsingINfcAdapter(enablePolling);
-        }
+        if (DEBUG) Slog.v(TAG, "Setting NFC reader mode. enablePolling: " + enablePolling);
+        nfcAdapter.setReaderMode(enablePolling);
     }
 
     private static int[] toArray(Collection<Integer> c) {
diff --git a/services/core/java/com/android/server/clipboard/ClipboardService.java b/services/core/java/com/android/server/clipboard/ClipboardService.java
index 4b8b431..74310b5 100644
--- a/services/core/java/com/android/server/clipboard/ClipboardService.java
+++ b/services/core/java/com/android/server/clipboard/ClipboardService.java
@@ -54,6 +54,7 @@
 import android.hardware.display.DisplayManager;
 import android.net.Uri;
 import android.os.Binder;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.HandlerThread;
@@ -65,7 +66,6 @@
 import android.os.RemoteCallbackList;
 import android.os.RemoteException;
 import android.os.ServiceManager;
-import android.os.SystemProperties;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.provider.DeviceConfig;
@@ -114,8 +114,6 @@
 public class ClipboardService extends SystemService {
 
     private static final String TAG = "ClipboardService";
-    private static final boolean IS_EMULATOR =
-            SystemProperties.getBoolean("ro.boot.qemu", false);
 
     @VisibleForTesting
     public static final long DEFAULT_CLIPBOARD_TIMEOUT_MILLIS = 3600000;
@@ -190,7 +188,7 @@
         mAutofillInternal = LocalServices.getService(AutofillManagerInternal.class);
         final IBinder permOwner = mUgmInternal.newUriPermissionOwner("clipboard");
         mPermissionOwner = permOwner;
-        if (IS_EMULATOR) {
+        if (Build.IS_EMULATOR) {
             mEmulatorClipboardMonitor = new EmulatorClipboardMonitor((clip) -> {
                 synchronized (mLock) {
                     setPrimaryClipInternalLocked(getClipboardLocked(0, DEVICE_ID_DEFAULT), clip,
diff --git a/services/core/java/com/android/server/connectivity/Vpn.java b/services/core/java/com/android/server/connectivity/Vpn.java
index a12243b..c517058 100644
--- a/services/core/java/com/android/server/connectivity/Vpn.java
+++ b/services/core/java/com/android/server/connectivity/Vpn.java
@@ -56,7 +56,6 @@
 import android.content.pm.UserInfo;
 import android.net.ConnectivityDiagnosticsManager;
 import android.net.ConnectivityManager;
-import android.net.DnsResolver;
 import android.net.INetd;
 import android.net.INetworkManagementEventObserver;
 import android.net.Ikev2VpnProfile;
@@ -67,8 +66,6 @@
 import android.net.IpSecTransform;
 import android.net.LinkAddress;
 import android.net.LinkProperties;
-import android.net.LocalSocket;
-import android.net.LocalSocketAddress;
 import android.net.Network;
 import android.net.NetworkAgent;
 import android.net.NetworkAgentConfig;
@@ -109,7 +106,6 @@
 import android.os.Binder;
 import android.os.Build.VERSION_CODES;
 import android.os.Bundle;
-import android.os.CancellationSignal;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.INetworkManagementService;
@@ -120,7 +116,6 @@
 import android.os.Process;
 import android.os.RemoteException;
 import android.os.SystemClock;
-import android.os.SystemService;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.provider.Settings;
@@ -160,11 +155,8 @@
 
 import libcore.io.IoUtils;
 
-import java.io.File;
 import java.io.FileDescriptor;
 import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
 import java.net.Inet4Address;
 import java.net.Inet6Address;
 import java.net.InetAddress;
@@ -190,8 +182,6 @@
 import java.util.SortedSet;
 import java.util.TreeSet;
 import java.util.UUID;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Executor;
 import java.util.concurrent.RejectedExecutionException;
 import java.util.concurrent.ScheduledFuture;
@@ -451,10 +441,6 @@
     // The user id of initiating VPN.
     private final int mUserId;
 
-    interface RetryScheduler {
-        void checkInterruptAndDelay(boolean sleepLonger) throws InterruptedException;
-    }
-
     private static class CarrierConfigInfo {
         public final String mccMnc;
         public final int keepaliveDelaySec;
@@ -483,26 +469,6 @@
             return Binder.getCallingUid() == Process.SYSTEM_UID;
         }
 
-        public void startService(final String serviceName) {
-            SystemService.start(serviceName);
-        }
-
-        public void stopService(final String serviceName) {
-            SystemService.stop(serviceName);
-        }
-
-        public boolean isServiceRunning(final String serviceName) {
-            return SystemService.isRunning(serviceName);
-        }
-
-        public boolean isServiceStopped(final String serviceName) {
-            return SystemService.isStopped(serviceName);
-        }
-
-        public File getStateFile() {
-            return new File("/data/misc/vpn/state");
-        }
-
         public DeviceIdleInternal getDeviceIdleInternal() {
             return LocalServices.getService(DeviceIdleInternal.class);
         }
@@ -511,104 +477,6 @@
             return VpnConfig.getIntentForStatusPanel(context);
         }
 
-        public void sendArgumentsToDaemon(
-                final String daemon, final LocalSocket socket, final String[] arguments,
-                final RetryScheduler retryScheduler) throws IOException, InterruptedException {
-            final LocalSocketAddress address = new LocalSocketAddress(
-                    daemon, LocalSocketAddress.Namespace.RESERVED);
-
-            // Wait for the socket to connect.
-            while (true) {
-                try {
-                    socket.connect(address);
-                    break;
-                } catch (Exception e) {
-                    // ignore
-                }
-                retryScheduler.checkInterruptAndDelay(true /* sleepLonger */);
-            }
-            socket.setSoTimeout(500);
-
-            final OutputStream out = socket.getOutputStream();
-            for (String argument : arguments) {
-                byte[] bytes = argument.getBytes(StandardCharsets.UTF_8);
-                if (bytes.length >= 0xFFFF) {
-                    throw new IllegalArgumentException("Argument is too large");
-                }
-                out.write(bytes.length >> 8);
-                out.write(bytes.length);
-                out.write(bytes);
-                retryScheduler.checkInterruptAndDelay(false /* sleepLonger */);
-            }
-            out.write(0xFF);
-            out.write(0xFF);
-
-            // Wait for End-of-File.
-            final InputStream in = socket.getInputStream();
-            while (true) {
-                try {
-                    if (in.read() == -1) {
-                        break;
-                    }
-                } catch (Exception e) {
-                    // ignore
-                }
-                retryScheduler.checkInterruptAndDelay(true /* sleepLonger */);
-            }
-        }
-
-        @NonNull
-        public InetAddress resolve(final String endpoint)
-                throws ExecutionException, InterruptedException {
-            try {
-                return InetAddresses.parseNumericAddress(endpoint);
-            } catch (IllegalArgumentException e) {
-                // Endpoint is not numeric : fall through and resolve
-            }
-
-            final CancellationSignal cancellationSignal = new CancellationSignal();
-            try {
-                final DnsResolver resolver = DnsResolver.getInstance();
-                final CompletableFuture<InetAddress> result = new CompletableFuture();
-                final DnsResolver.Callback<List<InetAddress>> cb =
-                        new DnsResolver.Callback<List<InetAddress>>() {
-                            @Override
-                            public void onAnswer(@NonNull final List<InetAddress> answer,
-                                    final int rcode) {
-                                if (answer.size() > 0) {
-                                    result.complete(answer.get(0));
-                                } else {
-                                    result.completeExceptionally(
-                                            new UnknownHostException(endpoint));
-                                }
-                            }
-
-                            @Override
-                            public void onError(@Nullable final DnsResolver.DnsException error) {
-                                // Unfortunately UnknownHostException doesn't accept a cause, so
-                                // print a message here instead. Only show the summary, not the
-                                // full stack trace.
-                                Log.e(TAG, "Async dns resolver error : " + error);
-                                result.completeExceptionally(new UnknownHostException(endpoint));
-                            }
-                        };
-                resolver.query(null /* network, null for default */, endpoint,
-                        DnsResolver.FLAG_EMPTY, r -> r.run(), cancellationSignal, cb);
-                return result.get();
-            } catch (final ExecutionException e) {
-                Log.e(TAG, "Cannot resolve VPN endpoint : " + endpoint + ".", e);
-                throw e;
-            } catch (final InterruptedException e) {
-                Log.e(TAG, "Legacy VPN was interrupted while resolving the endpoint", e);
-                cancellationSignal.cancel();
-                throw e;
-            }
-        }
-
-        public boolean isInterfacePresent(final Vpn vpn, final String iface) {
-            return vpn.jniCheck(iface) != 0;
-        }
-
         /**
          * @see ParcelFileDescriptor#adoptFd(int)
          */
@@ -2549,15 +2417,14 @@
      * secondary thread to perform connection work, returning quickly.
      *
      * Should only be called to respond to Binder requests as this enforces caller permission. Use
-     * {@link #startLegacyVpnPrivileged(VpnProfile, Network, LinkProperties)} to skip the
+     * {@link #startLegacyVpnPrivileged(VpnProfile)} to skip the
      * permission check only when the caller is trusted (or the call is initiated by the system).
      */
-    public void startLegacyVpn(VpnProfile profile, @Nullable Network underlying,
-            LinkProperties egress) {
+    public void startLegacyVpn(VpnProfile profile) {
         enforceControlPermission();
         final long token = Binder.clearCallingIdentity();
         try {
-            startLegacyVpnPrivileged(profile, underlying, egress);
+            startLegacyVpnPrivileged(profile);
         } finally {
             Binder.restoreCallingIdentity(token);
         }
@@ -2616,13 +2483,13 @@
     }
 
     /**
-     * Like {@link #startLegacyVpn(VpnProfile, Network, LinkProperties)}, but does not
-     * check permissions under the assumption that the caller is the system.
+     * Like {@link #startLegacyVpn(VpnProfile)}, but does not check permissions under
+     * the assumption that the caller is the system.
      *
      * Callers are responsible for checking permissions if needed.
      */
-    public void startLegacyVpnPrivileged(VpnProfile profile,
-            @Nullable Network underlying, @NonNull LinkProperties egress) {
+    public void startLegacyVpnPrivileged(VpnProfile profileToStart) {
+        final VpnProfile profile = profileToStart.clone();
         UserInfo user = mUserManager.getUserInfo(mUserId);
         if (user.isRestricted() || mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN,
                     new UserHandle(mUserId))) {
@@ -3385,6 +3252,13 @@
          *              given network to start a new IKE session.
          */
         private void startOrMigrateIkeSession(@Nullable Network underlyingNetwork) {
+            synchronized (Vpn.this) {
+                // Ignore stale runner.
+                if (mVpnRunner != this) return;
+                setVpnNetworkPreference(mSessionKey,
+                        createUserAndRestrictedProfilesRanges(mUserId,
+                                mConfig.allowedApplications, mConfig.disallowedApplications));
+            }
             if (underlyingNetwork == null) {
                 // For null underlyingNetwork case, there will not be a NetworkAgent available so
                 // no underlying network update is necessary here. Note that updating
@@ -3905,6 +3779,7 @@
                 updateState(DetailedState.FAILED, exception.getMessage());
             }
 
+            clearVpnNetworkPreference(mSessionKey);
             disconnectVpnRunner();
         }
 
@@ -4039,6 +3914,13 @@
             }
 
             resetIkeState();
+            if (errorCode != VpnManager.ERROR_CODE_NETWORK_LOST
+                    // Clear the VPN network preference when the retry delay is higher than 5s.
+                    // mRetryCount was increased when scheduleRetryNewIkeSession() is called,
+                    // therefore use mRetryCount - 1 here.
+                    && mDeps.getNextRetryDelayMs(mRetryCount - 1) > 5_000L) {
+                clearVpnNetworkPreference(mSessionKey);
+            }
         }
 
         /**
@@ -4085,13 +3967,17 @@
             mCarrierConfigManager.unregisterCarrierConfigChangeListener(
                     mCarrierConfigChangeListener);
             mConnectivityManager.unregisterNetworkCallback(mNetworkCallback);
-            clearVpnNetworkPreference(mSessionKey);
 
             mExecutor.shutdown();
         }
 
         @Override
         public void exitVpnRunner() {
+            // mSessionKey won't be changed since the Ikev2VpnRunner is created, so it's ok to use
+            // it outside the mExecutor. And clearing the VPN network preference here can prevent
+            // the case that the VPN network preference isn't cleared when Ikev2VpnRunner became
+            // stale.
+            clearVpnNetworkPreference(mSessionKey);
             try {
                 mExecutor.execute(() -> {
                     disconnectVpnRunner();
diff --git a/services/core/java/com/android/server/hdmi/HdmiCecNetwork.java b/services/core/java/com/android/server/hdmi/HdmiCecNetwork.java
index 7045e65..d994849 100644
--- a/services/core/java/com/android/server/hdmi/HdmiCecNetwork.java
+++ b/services/core/java/com/android/server/hdmi/HdmiCecNetwork.java
@@ -899,6 +899,9 @@
      * port id.
      */
     int portIdToPath(int portId) {
+        if (portId == Constants.CEC_SWITCH_HOME) {
+            return getPhysicalAddress();
+        }
         HdmiPortInfo portInfo = getPortInfo(portId);
         if (portInfo == null) {
             Slog.e(TAG, "Cannot find the port info: " + portId);
diff --git a/services/core/java/com/android/server/hdmi/NewDeviceAction.java b/services/core/java/com/android/server/hdmi/NewDeviceAction.java
index 6147c10..f3532e5 100644
--- a/services/core/java/com/android/server/hdmi/NewDeviceAction.java
+++ b/services/core/java/com/android/server/hdmi/NewDeviceAction.java
@@ -182,7 +182,7 @@
                 .setVendorId(mVendorId)
                 .setDisplayName(mDisplayName)
                 .build();
-        localDevice().mService.getHdmiCecNetwork().addCecDevice(deviceInfo);
+        localDevice().mService.getHdmiCecNetwork().updateCecDevice(deviceInfo);
 
         // Consume CEC messages we already got for this newly found device.
         tv().processDelayedMessages(mDeviceLogicalAddress);
diff --git a/services/core/java/com/android/server/locksettings/LockSettingsService.java b/services/core/java/com/android/server/locksettings/LockSettingsService.java
index fa95a34..b4c3997 100644
--- a/services/core/java/com/android/server/locksettings/LockSettingsService.java
+++ b/services/core/java/com/android/server/locksettings/LockSettingsService.java
@@ -243,6 +243,10 @@
     private static final String MIGRATED_FRP2 = "migrated_frp2";
     private static final String MIGRATED_KEYSTORE_NS = "migrated_keystore_namespace";
     private static final String MIGRATED_SP_CE_ONLY = "migrated_all_users_to_sp_and_bound_ce";
+    private static final String MIGRATED_SP_FULL = "migrated_all_users_to_sp_and_bound_keys";
+
+    private static final boolean FIX_UNLOCKED_DEVICE_REQUIRED_KEYS =
+            android.security.Flags.fixUnlockedDeviceRequiredKeysV2();
 
     // Duration that LockSettingsService will store the gatekeeper password for. This allows
     // multiple biometric enrollments without prompting the user to enter their password via
@@ -853,9 +857,11 @@
         @Override
         public void onReceive(Context context, Intent intent) {
             if (Intent.ACTION_USER_ADDED.equals(intent.getAction())) {
-                // Notify keystore that a new user was added.
-                final int userHandle = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0);
-                AndroidKeyStoreMaintenance.onUserAdded(userHandle);
+                if (!FIX_UNLOCKED_DEVICE_REQUIRED_KEYS) {
+                    // Notify keystore that a new user was added.
+                    final int userHandle = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0);
+                    AndroidKeyStoreMaintenance.onUserAdded(userHandle);
+                }
             } else if (Intent.ACTION_USER_STARTING.equals(intent.getAction())) {
                 final int userHandle = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0);
                 mStorage.prefetchUser(userHandle);
@@ -1019,24 +1025,53 @@
             }
             mEarlyCreatedUsers = null; // no longer needed
 
-            // Also do a one-time migration of all users to SP-based credentials with the CE key
-            // encrypted by the SP.  This is needed for the system user on the first boot of a
-            // device, as the system user is special and never goes through the user creation flow
-            // that other users do.  It is also needed for existing users on a device upgraded from
-            // Android 13 or earlier, where users with no LSKF didn't necessarily have an SP, and if
-            // they did have an SP then their CE key wasn't encrypted by it.
+            // Do a one-time migration for any unsecured users: create the user's synthetic password
+            // if not already done, encrypt the user's CE key with the synthetic password if not
+            // already done, and create the user's Keystore super keys if not already done.
             //
-            // If this gets interrupted (e.g. by the device powering off), there shouldn't be a
-            // problem since this will run again on the next boot, and setCeStorageProtection() is
-            // okay with the CE key being already protected by the given secret.
-            if (getString(MIGRATED_SP_CE_ONLY, null, 0) == null) {
-                for (UserInfo user : mUserManager.getAliveUsers()) {
-                    removeStateForReusedUserIdIfNecessary(user.id, user.serialNumber);
-                    synchronized (mSpManager) {
-                        migrateUserToSpWithBoundCeKeyLocked(user.id);
+            // This is needed for the following cases:
+            //
+            // - Finalizing the creation of the system user on the first boot of a device, as the
+            //   system user is special and doesn't go through the normal user creation flow.
+            //
+            // - Upgrading from Android 13 or earlier, where unsecured users didn't necessarily have
+            //   a synthetic password, and if they did have a synthetic password their CE key wasn't
+            //   encrypted by it.  Also, unsecured users didn't have Keystore super keys.
+            //
+            // - Upgrading from Android 14, where unsecured users didn't have Keystore super keys.
+            //
+            // The end result is that all users, regardless of whether they are secured or not, have
+            // a synthetic password with all keys initialized and protected by it.
+            //
+            // Note: if this migration gets interrupted (e.g. by the device powering off), there
+            // shouldn't be a problem since this will run again on the next boot, and
+            // setCeStorageProtection() and initKeystoreSuperKeys(..., true) are idempotent.
+            if (FIX_UNLOCKED_DEVICE_REQUIRED_KEYS) {
+                if (!getBoolean(MIGRATED_SP_FULL, false, 0)) {
+                    for (UserInfo user : mUserManager.getAliveUsers()) {
+                        removeStateForReusedUserIdIfNecessary(user.id, user.serialNumber);
+                        synchronized (mSpManager) {
+                            migrateUserToSpWithBoundKeysLocked(user.id);
+                        }
                     }
+                    setBoolean(MIGRATED_SP_FULL, true, 0);
                 }
-                setString(MIGRATED_SP_CE_ONLY, "true", 0);
+            } else {
+                if (getString(MIGRATED_SP_CE_ONLY, null, 0) == null) {
+                    for (UserInfo user : mUserManager.getAliveUsers()) {
+                        removeStateForReusedUserIdIfNecessary(user.id, user.serialNumber);
+                        synchronized (mSpManager) {
+                            migrateUserToSpWithBoundCeKeyLocked(user.id);
+                        }
+                    }
+                    setString(MIGRATED_SP_CE_ONLY, "true", 0);
+                }
+
+                if (getBoolean(MIGRATED_SP_FULL, false, 0)) {
+                    // The FIX_UNLOCKED_DEVICE_REQUIRED_KEYS flag was enabled but then got disabled.
+                    // Ensure the full migration runs again the next time the flag is enabled...
+                    setBoolean(MIGRATED_SP_FULL, false, 0);
+                }
             }
 
             mThirdPartyAppsStarted = true;
@@ -1067,6 +1102,37 @@
         }
     }
 
+    @GuardedBy("mSpManager")
+    private void migrateUserToSpWithBoundKeysLocked(@UserIdInt int userId) {
+        if (isUserSecure(userId)) {
+            Slogf.d(TAG, "User %d is secured; no migration needed", userId);
+            return;
+        }
+        long protectorId = getCurrentLskfBasedProtectorId(userId);
+        if (protectorId == SyntheticPasswordManager.NULL_PROTECTOR_ID) {
+            Slogf.i(TAG, "Migrating unsecured user %d to SP-based credential", userId);
+            initializeSyntheticPassword(userId);
+            return;
+        }
+        Slogf.i(TAG, "Existing unsecured user %d has a synthetic password", userId);
+        AuthenticationResult result = mSpManager.unlockLskfBasedProtector(
+                getGateKeeperService(), protectorId, LockscreenCredential.createNone(), userId,
+                null);
+        SyntheticPassword sp = result.syntheticPassword;
+        if (sp == null) {
+            Slogf.wtf(TAG, "Failed to unwrap synthetic password for unsecured user %d", userId);
+            return;
+        }
+        // While setCeStorageProtection() is idempotent, it does log some error messages when called
+        // again.  Skip it if we know it was already handled by an earlier upgrade to Android 14.
+        if (getString(MIGRATED_SP_CE_ONLY, null, 0) == null) {
+            Slogf.i(TAG, "Encrypting CE key of user %d with synthetic password", userId);
+            setCeStorageProtection(userId, sp);
+        }
+        Slogf.i(TAG, "Initializing Keystore super keys for user %d", userId);
+        initKeystoreSuperKeys(userId, sp, /* allowExisting= */ true);
+    }
+
     /**
      * Returns the lowest password quality that still presents the same UI for entering it.
      *
@@ -1348,6 +1414,20 @@
         AndroidKeyStoreMaintenance.onUserPasswordChanged(userHandle, password);
     }
 
+    @VisibleForTesting /** Note: this method is overridden in unit tests */
+    void initKeystoreSuperKeys(@UserIdInt int userId, SyntheticPassword sp, boolean allowExisting) {
+        final byte[] password = sp.deriveKeyStorePassword();
+        try {
+            int res = AndroidKeyStoreMaintenance.initUserSuperKeys(userId, password, allowExisting);
+            if (res != 0) {
+                throw new IllegalStateException("Failed to initialize Keystore super keys for user "
+                        + userId);
+            }
+        } finally {
+            Arrays.fill(password, (byte) 0);
+        }
+    }
+
     private void unlockKeystore(int userId, SyntheticPassword sp) {
         Authorization.onLockScreenEvent(false, userId, sp.deriveKeyStorePassword(), null);
     }
@@ -2071,6 +2151,9 @@
                 return;
             }
             onSyntheticPasswordUnlocked(userId, result.syntheticPassword);
+            if (FIX_UNLOCKED_DEVICE_REQUIRED_KEYS) {
+                unlockKeystore(userId, result.syntheticPassword);
+            }
             unlockCeStorage(userId, result.syntheticPassword);
         }
     }
@@ -2350,6 +2433,16 @@
     }
 
     private void createNewUser(@UserIdInt int userId, int userSerialNumber) {
+
+        // Delete all Keystore keys for userId, just in case any were left around from a removed
+        // user with the same userId.  This should be unnecessary, but we've been doing this for a
+        // long time, so for now we keep doing it just in case it's ever important.  Don't wait
+        // until initKeystoreSuperKeys() to do this; that can be delayed if the user is being
+        // created during early boot, and maybe something will use Keystore before then.
+        if (FIX_UNLOCKED_DEVICE_REQUIRED_KEYS) {
+            AndroidKeyStoreMaintenance.onUserAdded(userId);
+        }
+
         synchronized (mUserCreationAndRemovalLock) {
             // During early boot, don't actually create the synthetic password yet, but rather
             // automatically delay it to later.  We do this because protecting the synthetic
@@ -2756,7 +2849,7 @@
 
     /**
      * Creates the synthetic password (SP) for the given user, protects it with an empty LSKF, and
-     * protects the user's CE key with a key derived from the SP.
+     * protects the user's CE storage key and Keystore super keys with keys derived from the SP.
      *
      * <p>This is called just once in the lifetime of the user: at user creation time (possibly
      * delayed until the time when Weaver is guaranteed to be available), or when upgrading from
@@ -2775,6 +2868,9 @@
                     LockscreenCredential.createNone(), sp, userId);
             setCurrentLskfBasedProtectorId(protectorId, userId);
             setCeStorageProtection(userId, sp);
+            if (FIX_UNLOCKED_DEVICE_REQUIRED_KEYS) {
+                initKeystoreSuperKeys(userId, sp, /* allowExisting= */ false);
+            }
             onSyntheticPasswordCreated(userId, sp);
             Slogf.i(TAG, "Successfully initialized synthetic password for user %d", userId);
             return sp;
@@ -2867,11 +2963,10 @@
     /**
      * Changes the user's LSKF by creating an LSKF-based protector that uses the new LSKF (which may
      * be empty) and replacing the old LSKF-based protector with it.  The SP itself is not changed.
-     *
-     * Also maintains the invariants described in {@link SyntheticPasswordManager} by
-     * setting/clearing the protection (by the SP) on the user's auth-bound Keystore keys when the
-     * LSKF is added/removed, respectively.  If an LSKF is being added, then the Gatekeeper auth
-     * token is also refreshed.
+     * <p>
+     * Also maintains the invariants described in {@link SyntheticPasswordManager} by enrolling /
+     * deleting the synthetic password into Gatekeeper as the LSKF is set / cleared, and asking
+     * Keystore to delete the user's auth-bound keys when the LSKF is cleared.
      */
     @GuardedBy("mSpManager")
     private long setLockCredentialWithSpLocked(LockscreenCredential credential,
@@ -2890,7 +2985,9 @@
             if (!mSpManager.hasSidForUser(userId)) {
                 mSpManager.newSidForUser(getGateKeeperService(), sp, userId);
                 mSpManager.verifyChallenge(getGateKeeperService(), sp, 0L, userId);
-                setKeystorePassword(sp.deriveKeyStorePassword(), userId);
+                if (!FIX_UNLOCKED_DEVICE_REQUIRED_KEYS) {
+                    setKeystorePassword(sp.deriveKeyStorePassword(), userId);
+                }
             }
         } else {
             // Cache all profile password if they use unified work challenge. This will later be
@@ -2901,7 +2998,11 @@
             gateKeeperClearSecureUserId(userId);
             unlockCeStorage(userId, sp);
             unlockKeystore(userId, sp);
-            setKeystorePassword(null, userId);
+            if (FIX_UNLOCKED_DEVICE_REQUIRED_KEYS) {
+                AndroidKeyStoreMaintenance.onUserLskfRemoved(userId);
+            } else {
+                setKeystorePassword(null, userId);
+            }
             removeBiometricsForUser(userId);
         }
         setCurrentLskfBasedProtectorId(newProtectorId, userId);
diff --git a/services/core/java/com/android/server/locksettings/LockSettingsShellCommand.java b/services/core/java/com/android/server/locksettings/LockSettingsShellCommand.java
index 4bac872..17f2fcc 100644
--- a/services/core/java/com/android/server/locksettings/LockSettingsShellCommand.java
+++ b/services/core/java/com/android/server/locksettings/LockSettingsShellCommand.java
@@ -155,43 +155,45 @@
         try (final PrintWriter pw = getOutPrintWriter();) {
             pw.println("lockSettings service commands:");
             pw.println("");
-            pw.println("NOTE: when lock screen is set, all commands require the --old <CREDENTIAL>"
-                    + " argument.");
+            pw.println("NOTE: when a secure lock screen is set, most commands require the");
+            pw.println("--old <CREDENTIAL> option.");
             pw.println("");
             pw.println("  help");
             pw.println("    Prints this help text.");
             pw.println("");
-            pw.println("  get-disabled [--old <CREDENTIAL>] [--user USER_ID]");
-            pw.println("    Checks whether lock screen is disabled.");
+            pw.println("  get-disabled [--user USER_ID]");
+            pw.println("    Prints true if the lock screen is completely disabled, i.e. set to None.");
+            pw.println("    Otherwise prints false.");
             pw.println("");
-            pw.println("  set-disabled [--old <CREDENTIAL>] [--user USER_ID] <true|false>");
-            pw.println("    When true, disables lock screen.");
+            pw.println("  set-disabled [--user USER_ID] <true|false>");
+            pw.println("    Sets whether the lock screen is disabled. If the lock screen is secure, this");
+            pw.println("    has no immediate effect. I.e. this can only change between Swipe and None.");
             pw.println("");
             pw.println("  set-pattern [--old <CREDENTIAL>] [--user USER_ID] <PATTERN>");
-            pw.println("    Sets the lock screen as pattern, using the given PATTERN to unlock.");
+            pw.println("    Sets a secure lock screen that uses the given PATTERN. PATTERN is a series");
+            pw.println("    of digits 1-9 that identify the cells of the pattern.");
             pw.println("");
             pw.println("  set-pin [--old <CREDENTIAL>] [--user USER_ID] <PIN>");
-            pw.println("    Sets the lock screen as PIN, using the given PIN to unlock.");
+            pw.println("    Sets a secure lock screen that uses the given PIN.");
             pw.println("");
             pw.println("  set-password [--old <CREDENTIAL>] [--user USER_ID] <PASSWORD>");
-            pw.println("    Sets the lock screen as password, using the given PASSWORD to unlock.");
+            pw.println("    Sets a secure lock screen that uses the given PASSWORD.");
             pw.println("");
             pw.println("  clear [--old <CREDENTIAL>] [--user USER_ID]");
-            pw.println("    Clears the lock credentials.");
+            pw.println("    Clears the lock credential.");
             pw.println("");
             pw.println("  verify [--old <CREDENTIAL>] [--user USER_ID]");
-            pw.println("    Verifies the lock credentials.");
+            pw.println("    Verifies the lock credential.");
             pw.println("");
             pw.println("  remove-cache [--user USER_ID]");
             pw.println("    Removes cached unified challenge for the managed profile.");
             pw.println("");
             pw.println("  set-resume-on-reboot-provider-package <package_name>");
-            pw.println("    Sets the package name for server based resume on reboot service "
-                    + "provider.");
+            pw.println("    Sets the package name for server based resume on reboot service provider.");
             pw.println("");
             pw.println("  require-strong-auth [--user USER_ID] <reason>");
-            pw.println("    Requires the strong authentication. The current supported reasons: "
-                    + "STRONG_AUTH_REQUIRED_AFTER_USER_LOCKDOWN.");
+            pw.println("    Requires strong authentication. The current supported reasons:");
+            pw.println("    STRONG_AUTH_REQUIRED_AFTER_USER_LOCKDOWN.");
             pw.println("");
         }
     }
diff --git a/services/core/java/com/android/server/locksettings/SyntheticPasswordManager.java b/services/core/java/com/android/server/locksettings/SyntheticPasswordManager.java
index 8e9c21f..cc205d4 100644
--- a/services/core/java/com/android/server/locksettings/SyntheticPasswordManager.java
+++ b/services/core/java/com/android/server/locksettings/SyntheticPasswordManager.java
@@ -90,10 +90,15 @@
  *
  *  - The user's credential-encrypted storage is always protected by the SP.
  *
- *  - The user's auth-bound Keystore keys are protected by the SP, but only while an LSKF is set.
- *    This works by setting the user's Keystore and Gatekeeper passwords to SP-derived secrets, but
- *    only while an LSKF is set.  When the LSKF is removed, these passwords are cleared,
- *    invalidating the user's auth-bound keys.
+ *  - The user's Keystore superencryption keys are always protected by the SP.  These in turn
+ *    protect the Keystore keys that require user authentication, an unlocked device, or both.
+ *
+ *  - A secret derived from the synthetic password is enrolled in Gatekeeper for the user, but only
+ *    while the user has a (nonempty) LSKF.  This enrollment has an associated ID called the Secure
+ *    user ID or SID.  This use of Gatekeeper, which is separate from the use of GateKeeper that may
+ *    be used in the LSKF-based protector, makes it so that unlocking the synthetic password
+ *    generates a HardwareAuthToken (but only when the user has LSKF).  That HardwareAuthToken can
+ *    be provided to KeyMint to authorize the use of the user's authentication-bound Keystore keys.
  *
  * Files stored on disk for each user:
  *   For the SP itself, stored under NULL_PROTECTOR_ID:
diff --git a/services/core/java/com/android/server/net/LockdownVpnTracker.java b/services/core/java/com/android/server/net/LockdownVpnTracker.java
index 1b7d1ba..9a0b391 100644
--- a/services/core/java/com/android/server/net/LockdownVpnTracker.java
+++ b/services/core/java/com/android/server/net/LockdownVpnTracker.java
@@ -208,7 +208,7 @@
                 //    network is the system default. So, if the VPN  is up and underlying network
                 //    (e.g., wifi) disconnects, CS will inform apps that the VPN's capabilities have
                 //    changed to match the new default network (e.g., cell).
-                mVpn.startLegacyVpnPrivileged(mProfile, network, egressProp);
+                mVpn.startLegacyVpnPrivileged(mProfile);
             } catch (IllegalStateException e) {
                 mAcceptedEgressIface = null;
                 Log.e(TAG, "Failed to start VPN", e);
diff --git a/services/core/java/com/android/server/net/NetworkManagementService.java b/services/core/java/com/android/server/net/NetworkManagementService.java
index 550ad5d..681d1a0 100644
--- a/services/core/java/com/android/server/net/NetworkManagementService.java
+++ b/services/core/java/com/android/server/net/NetworkManagementService.java
@@ -74,7 +74,6 @@
 import com.android.internal.util.DumpUtils;
 import com.android.internal.util.HexDump;
 import com.android.modules.utils.build.SdkLevel;
-import com.android.net.flags.Flags;
 import com.android.net.module.util.NetdUtils;
 import com.android.net.module.util.PermissionUtils;
 import com.android.server.FgThread;
@@ -328,10 +327,10 @@
     /**
      * Notify our observers of a change in the data activity state of the interface
      */
-    private void notifyInterfaceClassActivity(int type, boolean isActive, long tsNanos,
+    private void notifyInterfaceClassActivity(int label, boolean isActive, long tsNanos,
             int uid) {
         invokeForAllObservers(o -> o.interfaceClassDataActivityChanged(
-                type, isActive, tsNanos, uid));
+                label, isActive, tsNanos, uid));
     }
 
     // Sync the state of the given chain with the native daemon.
@@ -1062,7 +1061,7 @@
             }
             Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "setDataSaverModeEnabled");
             try {
-                if (Flags.setDataSaverViaCm()) {
+                if (SdkLevel.isAtLeastV()) {
                     // setDataSaverEnabled throws if it fails to set data saver.
                     mContext.getSystemService(ConnectivityManager.class)
                             .setDataSaverEnabled(enable);
diff --git a/services/core/java/com/android/server/os/NativeTombstoneManager.java b/services/core/java/com/android/server/os/NativeTombstoneManager.java
index e5616d0..ab0d0d2 100644
--- a/services/core/java/com/android/server/os/NativeTombstoneManager.java
+++ b/services/core/java/com/android/server/os/NativeTombstoneManager.java
@@ -61,6 +61,7 @@
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
+import java.util.concurrent.locks.ReentrantLock;
 
 /**
  * A class to manage native tombstones.
@@ -74,6 +75,8 @@
     private final Handler mHandler;
     private final TombstoneWatcher mWatcher;
 
+    private final ReentrantLock mTmpFileLock = new ReentrantLock();
+
     private final Object mLock = new Object();
 
     @GuardedBy("mLock")
@@ -112,7 +115,12 @@
 
         // Clean up temporary files if they made it this far (e.g. if system server crashes).
         if (filename.endsWith(".tmp")) {
-            path.delete();
+            mTmpFileLock.lock();
+            try {
+                path.delete();
+            } finally {
+                mTmpFileLock.unlock();
+            }
             return;
         }
 
@@ -128,7 +136,7 @@
         if (parsedTombstone.isPresent()) {
             processName = parsedTombstone.get().getProcessName();
         }
-        BootReceiver.addTombstoneToDropBox(mContext, path, isProtoFile, processName);
+        BootReceiver.addTombstoneToDropBox(mContext, path, isProtoFile, processName, mTmpFileLock);
     }
 
     private Optional<TombstoneFile> handleProtoTombstone(File path, boolean addToList) {
diff --git a/services/core/java/com/android/server/pm/DumpHelper.java b/services/core/java/com/android/server/pm/DumpHelper.java
index fcaaa90..c33af9b 100644
--- a/services/core/java/com/android/server/pm/DumpHelper.java
+++ b/services/core/java/com/android/server/pm/DumpHelper.java
@@ -160,7 +160,7 @@
                 pkg = snapshot.resolveInternalPackageName(pkg,
                         PackageManager.VERSION_CODE_HIGHEST);
 
-                pw.println(mPermissionManager.checkPermission(perm, pkg, user));
+                pw.println(mPermissionManager.checkPermission(pkg, perm, user));
                 return;
             } else if ("l".equals(cmd) || "libraries".equals(cmd)) {
                 dumpState.setDump(DumpState.DUMP_LIBS);
diff --git a/services/core/java/com/android/server/pm/UserDataPreparer.java b/services/core/java/com/android/server/pm/UserDataPreparer.java
index 6d58d34..8adb566 100644
--- a/services/core/java/com/android/server/pm/UserDataPreparer.java
+++ b/services/core/java/com/android/server/pm/UserDataPreparer.java
@@ -23,10 +23,10 @@
 import android.os.Environment;
 import android.os.FileUtils;
 import android.os.RecoverySystem;
-import android.os.storage.StorageManager;
-import android.os.storage.VolumeInfo;
 import android.os.SystemProperties;
 import android.os.UserHandle;
+import android.os.storage.StorageManager;
+import android.os.storage.VolumeInfo;
 import android.system.ErrnoException;
 import android.system.Os;
 import android.system.OsConstants;
@@ -35,6 +35,7 @@
 import android.util.SparseArray;
 
 import com.android.internal.annotations.VisibleForTesting;
+import com.android.server.utils.Slogf;
 
 import java.io.File;
 import java.io.IOException;
@@ -43,7 +44,6 @@
 import java.util.Collections;
 import java.util.List;
 import java.util.Objects;
-import java.util.Set;
 
 /**
  * Helper class for preparing and destroying user storage
@@ -65,31 +65,37 @@
     /**
      * Prepare storage areas for given user on all mounted devices.
      */
-    void prepareUserData(int userId, int userSerial, int flags) {
+    void prepareUserData(UserInfo userInfo, int flags) {
         synchronized (mInstallLock) {
             final StorageManager storage = mContext.getSystemService(StorageManager.class);
             /*
              * Internal storage must be prepared before adoptable storage, since the user's volume
              * keys are stored in their internal storage.
              */
-            prepareUserDataLI(null /* internal storage */, userId, userSerial, flags, true);
+            prepareUserDataLI(null /* internal storage */, userInfo, flags, true);
             for (VolumeInfo vol : storage.getWritablePrivateVolumes()) {
                 final String volumeUuid = vol.getFsUuid();
                 if (volumeUuid != null) {
-                    prepareUserDataLI(volumeUuid, userId, userSerial, flags, true);
+                    prepareUserDataLI(volumeUuid, userInfo, flags, true);
                 }
             }
         }
     }
 
-    private void prepareUserDataLI(String volumeUuid, int userId, int userSerial, int flags,
+    private void prepareUserDataLI(String volumeUuid, UserInfo userInfo, int flags,
             boolean allowRecover) {
-        // Prepare storage and verify that serial numbers are consistent; if
-        // there's a mismatch we need to destroy to avoid leaking data
+        final int userId = userInfo.id;
+        final int userSerial = userInfo.serialNumber;
         final StorageManager storage = mContext.getSystemService(StorageManager.class);
+        final boolean isNewUser = userInfo.lastLoggedInTime == 0;
+        Slogf.d(TAG, "Preparing user data; volumeUuid=%s, userId=%d, flags=0x%x, isNewUser=%s",
+                volumeUuid, userId, flags, isNewUser);
         try {
+            // Prepare CE and/or DE storage.
             storage.prepareUserStorage(volumeUuid, userId, userSerial, flags);
 
+            // Ensure that the data directories of a removed user with the same ID are not being
+            // reused.  New users must get fresh data directories, to avoid leaking data.
             if ((flags & StorageManager.FLAG_STORAGE_DE) != 0) {
                 enforceSerialNumber(getDataUserDeDirectory(volumeUuid, userId), userSerial);
                 if (Objects.equals(volumeUuid, StorageManager.UUID_PRIVATE_INTERNAL)) {
@@ -103,9 +109,10 @@
                 }
             }
 
+            // Prepare the app data directories.
             mInstaller.createUserData(volumeUuid, userId, userSerial, flags);
 
-            // CE storage is available after they are prepared.
+            // If applicable, record that the system user's CE storage has been prepared.
             if ((flags & StorageManager.FLAG_STORAGE_CE) != 0 &&
                     (userId == UserHandle.USER_SYSTEM)) {
                 String propertyName = "sys.user." + userId + ".ce_available";
@@ -113,20 +120,31 @@
                 SystemProperties.set(propertyName, "true");
             }
         } catch (Exception e) {
-            logCriticalInfo(Log.WARN, "Destroying user " + userId + " on volume " + volumeUuid
-                    + " because we failed to prepare: " + e);
-            destroyUserDataLI(volumeUuid, userId, flags);
-
+            // Failed to prepare user data.  For new users, specifically users that haven't ever
+            // been unlocked, destroy the user data, and try again (if not already retried).  This
+            // might be effective at resolving some errors, such as stale directories from a reused
+            // user ID.  Don't auto-destroy data for existing users, since issues with existing
+            // users might be fixable via an OTA without having to wipe the user's data.
+            if (isNewUser) {
+                logCriticalInfo(Log.ERROR, "Destroying user " + userId + " on volume " + volumeUuid
+                        + " because we failed to prepare: " + e);
+                destroyUserDataLI(volumeUuid, userId, flags);
+            } else {
+                logCriticalInfo(Log.ERROR, "Failed to prepare user " + userId + " on volume "
+                        + volumeUuid + ": " + e);
+            }
             if (allowRecover) {
                 // Try one last time; if we fail again we're really in trouble
-                prepareUserDataLI(volumeUuid, userId, userSerial,
-                    flags | StorageManager.FLAG_STORAGE_DE, false);
+                prepareUserDataLI(volumeUuid, userInfo, flags | StorageManager.FLAG_STORAGE_DE,
+                        false);
             } else {
+                // If internal storage of the system user fails to prepare on first boot, then
+                // things are *really* broken, so we might as well reboot to recovery right away.
                 try {
                     Log.wtf(TAG, "prepareUserData failed for user " + userId, e);
-                    if (userId == UserHandle.USER_SYSTEM) {
+                    if (isNewUser && userId == UserHandle.USER_SYSTEM && volumeUuid == null) {
                         RecoverySystem.rebootPromptAndWipeUserData(mContext,
-                                "prepareUserData failed for system user");
+                                "failed to prepare internal storage for system user");
                     }
                 } catch (IOException e2) {
                     throw new RuntimeException("error rebooting into recovery", e2);
diff --git a/services/core/java/com/android/server/pm/UserManagerService.java b/services/core/java/com/android/server/pm/UserManagerService.java
index e11e226..6814848 100644
--- a/services/core/java/com/android/server/pm/UserManagerService.java
+++ b/services/core/java/com/android/server/pm/UserManagerService.java
@@ -4914,8 +4914,7 @@
             // unlocked.  We do this to ensure that CE storage isn't prepared before the CE key is
             // saved to disk.  This also matches what is done for user 0.
             t.traceBegin("prepareUserData");
-            mUserDataPreparer.prepareUserData(userId, userInfo.serialNumber,
-                    StorageManager.FLAG_STORAGE_DE);
+            mUserDataPreparer.prepareUserData(userInfo, StorageManager.FLAG_STORAGE_DE);
             t.traceEnd();
 
             t.traceBegin("LSS.createNewUser");
@@ -6199,12 +6198,11 @@
         }
         TimingsTraceAndSlog t = new TimingsTraceAndSlog();
         t.traceBegin("onBeforeStartUser-" + userId);
-        final int userSerial = userInfo.serialNumber;
         // Migrate only if build fingerprints mismatch
         boolean migrateAppsData = !PackagePartitions.FINGERPRINT.equals(
                 userInfo.lastLoggedInFingerprint);
         t.traceBegin("prepareUserData");
-        mUserDataPreparer.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_DE);
+        mUserDataPreparer.prepareUserData(userInfo, StorageManager.FLAG_STORAGE_DE);
         t.traceEnd();
         t.traceBegin("reconcileAppsData");
         getPackageManagerInternal().reconcileAppsData(userId, StorageManager.FLAG_STORAGE_DE,
@@ -6230,14 +6228,13 @@
         if (userInfo == null) {
             return;
         }
-        final int userSerial = userInfo.serialNumber;
         // Migrate only if build fingerprints mismatch
         boolean migrateAppsData = !PackagePartitions.FINGERPRINT.equals(
                 userInfo.lastLoggedInFingerprint);
 
         final TimingsTraceAndSlog t = new TimingsTraceAndSlog();
         t.traceBegin("prepareUserData-" + userId);
-        mUserDataPreparer.prepareUserData(userId, userSerial, StorageManager.FLAG_STORAGE_CE);
+        mUserDataPreparer.prepareUserData(userInfo, StorageManager.FLAG_STORAGE_CE);
         t.traceEnd();
 
         StorageManagerInternal smInternal = LocalServices.getService(StorageManagerInternal.class);
diff --git a/services/core/java/com/android/server/pm/dex/ArtStatsLogUtils.java b/services/core/java/com/android/server/pm/dex/ArtStatsLogUtils.java
index d0c346a..57f4a5d 100644
--- a/services/core/java/com/android/server/pm/dex/ArtStatsLogUtils.java
+++ b/services/core/java/com/android/server/pm/dex/ArtStatsLogUtils.java
@@ -337,7 +337,8 @@
                     0, // deprecated, used to be durationIncludingSleepMs
                     0, // optimizedPackagesCount
                     0, // packagesDependingOnBootClasspathCount
-                    0); // totalPackagesCount
+                    0, // totalPackagesCount
+                    ArtStatsLog.BACKGROUND_DEXOPT_JOB_ENDED__PASS__PASS_UNKNOWN);
         }
     }
 }
diff --git a/services/core/java/com/android/server/power/OWNERS b/services/core/java/com/android/server/power/OWNERS
index 1970ee4..94340ec 100644
--- a/services/core/java/com/android/server/power/OWNERS
+++ b/services/core/java/com/android/server/power/OWNERS
@@ -2,6 +2,6 @@
 santoscordon@google.com
 philipjunker@google.com
 
-per-file ThermalManagerService.java=wvw@google.com
+per-file ThermalManagerService.java=file:/THERMAL_OWNERS
 per-file LowPowerStandbyController.java=qingxun@google.com
-per-file LowPowerStandbyControllerInternal.java=qingxun@google.com
\ No newline at end of file
+per-file LowPowerStandbyControllerInternal.java=qingxun@google.com
diff --git a/services/core/java/com/android/server/power/TEST_MAPPING b/services/core/java/com/android/server/power/TEST_MAPPING
index cf1bfc3..fbfe291 100644
--- a/services/core/java/com/android/server/power/TEST_MAPPING
+++ b/services/core/java/com/android/server/power/TEST_MAPPING
@@ -20,6 +20,7 @@
       "name": "FrameworksServicesTests",
       "options": [
         {"include-filter": "com.android.server.power"},
+        {"exclude-filter": "com.android.server.power.BatteryStatsTests"},
         {"exclude-annotation": "android.platform.test.annotations.FlakyTest"},
         {"exclude-annotation": "androidx.test.filters.FlakyTest"}
       ]
@@ -38,7 +39,8 @@
     {
       "name": "FrameworksServicesTests",
       "options": [
-        {"include-filter": "com.android.server.power"}
+        {"include-filter": "com.android.server.power"},
+        {"exclude-filter": "com.android.server.power.BatteryStatsTests"}
       ]
     }
   ]
diff --git a/services/core/java/com/android/server/power/stats/BatteryStatsImpl.java b/services/core/java/com/android/server/power/stats/BatteryStatsImpl.java
index 27329e2..5dff9ef 100644
--- a/services/core/java/com/android/server/power/stats/BatteryStatsImpl.java
+++ b/services/core/java/com/android/server/power/stats/BatteryStatsImpl.java
@@ -8203,18 +8203,18 @@
 
         @GuardedBy("mBsi")
         private void ensureMultiStateCounters(long timestampMs) {
-            if (mProcStateTimeMs != null) {
-                return;
+            if (mProcStateTimeMs == null) {
+                mProcStateTimeMs =
+                        new TimeInFreqMultiStateCounter(mBsi.mOnBatteryTimeBase,
+                                PROC_STATE_TIME_COUNTER_STATE_COUNT, mBsi.getCpuFreqCount(),
+                                timestampMs);
             }
-
-            mProcStateTimeMs =
-                    new TimeInFreqMultiStateCounter(mBsi.mOnBatteryTimeBase,
-                            PROC_STATE_TIME_COUNTER_STATE_COUNT, mBsi.getCpuFreqCount(),
-                            timestampMs);
-            mProcStateScreenOffTimeMs =
-                    new TimeInFreqMultiStateCounter(mBsi.mOnBatteryScreenOffTimeBase,
-                            PROC_STATE_TIME_COUNTER_STATE_COUNT, mBsi.getCpuFreqCount(),
-                            timestampMs);
+            if (mProcStateScreenOffTimeMs == null) {
+                mProcStateScreenOffTimeMs =
+                        new TimeInFreqMultiStateCounter(mBsi.mOnBatteryScreenOffTimeBase,
+                                PROC_STATE_TIME_COUNTER_STATE_COUNT, mBsi.getCpuFreqCount(),
+                                timestampMs);
+            }
         }
 
         @GuardedBy("mBsi")
diff --git a/services/core/java/com/android/server/stats/pull/StatsPullAtomService.java b/services/core/java/com/android/server/stats/pull/StatsPullAtomService.java
index 76ee845..cc892a0 100644
--- a/services/core/java/com/android/server/stats/pull/StatsPullAtomService.java
+++ b/services/core/java/com/android/server/stats/pull/StatsPullAtomService.java
@@ -1421,6 +1421,7 @@
 
         final NetworkStats nonTaggedStats =
                 NetworkStatsUtils.fromPublicNetworkStats(queryNonTaggedStats);
+        queryNonTaggedStats.close();
         if (!includeTags) return nonTaggedStats;
 
         final android.app.usage.NetworkStats queryTaggedStats =
@@ -1429,6 +1430,7 @@
                         currentTimeInMillis);
         final NetworkStats taggedStats =
                 NetworkStatsUtils.fromPublicNetworkStats(queryTaggedStats);
+        queryTaggedStats.close();
         return nonTaggedStats.add(taggedStats);
     }
 
diff --git a/services/core/java/com/android/server/trust/TrustManagerService.java b/services/core/java/com/android/server/trust/TrustManagerService.java
index 635e11b..24c971c 100644
--- a/services/core/java/com/android/server/trust/TrustManagerService.java
+++ b/services/core/java/com/android/server/trust/TrustManagerService.java
@@ -829,7 +829,7 @@
             }
 
             final boolean trusted;
-            if (android.security.Flags.fixUnlockedDeviceRequiredKeys()) {
+            if (android.security.Flags.fixUnlockedDeviceRequiredKeysV2()) {
                 trusted = getUserTrustStateInner(id) == TrustState.TRUSTED;
             } else {
                 trusted = aggregateIsTrusted(id);
@@ -1647,8 +1647,22 @@
             fout.printf(" User \"%s\" (id=%d, flags=%#x)",
                     user.name, user.id, user.flags);
             if (!user.supportsSwitchToByUser()) {
-                fout.println("(managed profile)");
-                fout.println("   disabled because switching to this user is not possible.");
+                final boolean locked;
+                if (user.isProfile()) {
+                    if (mLockPatternUtils.isSeparateProfileChallengeEnabled(user.id)) {
+                        fout.print(" (profile with separate challenge)");
+                        locked = isDeviceLockedInner(user.id);
+                    } else {
+                        fout.print(" (profile with unified challenge)");
+                        locked = isDeviceLockedInner(resolveProfileParent(user.id));
+                    }
+                } else {
+                    fout.println(" (user that cannot be switched to)");
+                    locked = isDeviceLockedInner(user.id);
+                }
+                fout.println(": deviceLocked=" + dumpBool(locked));
+                fout.println(
+                        "   Trust agents disabled because switching to this user is not possible.");
                 return;
             }
             if (isCurrent) {
diff --git a/services/core/java/com/android/server/wm/Task.java b/services/core/java/com/android/server/wm/Task.java
index 6d560e4..f2346e6 100644
--- a/services/core/java/com/android/server/wm/Task.java
+++ b/services/core/java/com/android/server/wm/Task.java
@@ -6135,6 +6135,7 @@
                 // Avoid resuming activities on secondary displays since we don't want bubble
                 // activities to be resumed while bubble is still collapsed.
                 // TODO(b/113840485): Having keyguard going away state for secondary displays.
+                && display != null
                 && display.isDefaultDisplay) {
             return false;
         }
diff --git a/services/core/java/com/android/server/wm/WindowState.java b/services/core/java/com/android/server/wm/WindowState.java
index 06978a5..0a5b9eb 100644
--- a/services/core/java/com/android/server/wm/WindowState.java
+++ b/services/core/java/com/android/server/wm/WindowState.java
@@ -3276,7 +3276,9 @@
             // just kill it. And if it is a window of foreground activity, the activity can be
             // restarted automatically if needed.
             Slog.w(TAG, "Exception thrown during dispatchAppVisibility " + this, e);
-            android.os.Process.killProcess(mSession.mPid);
+            if (android.os.Process.getUidForPid(mSession.mPid) == mSession.mUid) {
+                android.os.Process.killProcess(mSession.mPid);
+            }
         }
     }
 
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index 3610542..f1f5d83 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -1451,8 +1451,6 @@
         boolean disableCameraService = SystemProperties.getBoolean("config.disable_cameraservice",
                 false);
 
-        boolean isEmulator = SystemProperties.get("ro.boot.qemu").equals("1");
-
         boolean isWatch = context.getPackageManager().hasSystemFeature(
                 PackageManager.FEATURE_WATCH);
 
@@ -2261,7 +2259,7 @@
             if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_USB_HOST)
                     || mPackageManager.hasSystemFeature(
                     PackageManager.FEATURE_USB_ACCESSORY)
-                    || isEmulator) {
+                    || Build.IS_EMULATOR) {
                 // Manage USB host and device support
                 t.traceBegin("StartUsbService");
                 mSystemServiceManager.startService(USB_SERVICE_CLASS);
diff --git a/services/proguard.flags b/services/proguard.flags
index e11e613..88561b4 100644
--- a/services/proguard.flags
+++ b/services/proguard.flags
@@ -14,13 +14,20 @@
 }
 
 # APIs referenced by dependent JAR files and modules
--keep @interface android.annotation.SystemApi
+# TODO(b/300514883): Pull @SystemApi keep rules from system-api.pro.
+-keep interface android.annotation.SystemApi
 -keep @android.annotation.SystemApi class * {
   public protected *;
 }
 -keepclasseswithmembers class * {
   @android.annotation.SystemApi *;
 }
+# Also ensure nested classes are kept. This is overly conservative, but handles
+# cases where such classes aren't explicitly marked @SystemApi.
+-if @android.annotation.SystemApi class *
+-keep public class <1>$** {
+  public protected *;
+}
 
 # Derivatives of SystemService and other services created via reflection
 -keep,allowoptimization,allowaccessmodification class * extends com.android.server.SystemService {
@@ -38,15 +45,16 @@
    public static void write(...);
 }
 
-# Binder interfaces
--keep,allowoptimization,allowaccessmodification class * extends android.os.IInterface
--keep,allowoptimization,allowaccessmodification class * extends android.os.IHwInterface
-
 # Various classes subclassed in or referenced via JNI in ethernet-service
 -keep public class android.net.** { *; }
 -keep,allowoptimization,allowaccessmodification class com.android.net.module.util.* { *; }
 -keep,allowoptimization,allowaccessmodification public class com.android.server.net.IpConfigStore { *; }
 -keep,allowoptimization,allowaccessmodification public class com.android.server.net.BaseNetworkObserver { *; }
+-keep,allowoptimization,allowaccessmodification class com.android.server.display.feature.DisplayManagerFlags { *; }
+-keep,allowoptimization,allowaccessmodification class android.app.admin.flags.FeatureFlagsImpl { *; }
+-keep,allowoptimization,allowaccessmodification class com.android.server.input.NativeInputManagerService$NativeImpl { *; }
+-keep,allowoptimization,allowaccessmodification class com.android.server.ThreadPriorityBooster { *; }
+-keep,allowaccessmodification class android.app.admin.flags.Flags { *; }
 
 # Referenced via CarServiceHelperService in car-frameworks-service (avoid removing)
 -keep public class com.android.server.utils.Slogf { *; }
@@ -99,9 +107,6 @@
 -keep,allowoptimization,allowaccessmodification class com.android.server.input.InputManagerService {
   <methods>;
 }
--keep,allowoptimization,allowaccessmodification class com.android.server.input.NativeInputManagerService$NativeImpl {
-  <methods>;
-}
 -keep,allowoptimization,allowaccessmodification class com.android.server.usb.UsbHostManager {
   *** usbDeviceRemoved(...);
   *** usbDeviceAdded(...);
diff --git a/services/tests/PackageManagerServiceTests/server/src/com/android/server/pm/UserDataPreparerTest.java b/services/tests/PackageManagerServiceTests/server/src/com/android/server/pm/UserDataPreparerTest.java
index afbe352..e5be4d9 100644
--- a/services/tests/PackageManagerServiceTests/server/src/com/android/server/pm/UserDataPreparerTest.java
+++ b/services/tests/PackageManagerServiceTests/server/src/com/android/server/pm/UserDataPreparerTest.java
@@ -21,6 +21,8 @@
 import static org.junit.Assert.assertTrue;
 import static org.mockito.Matchers.eq;
 import static org.mockito.Matchers.isNull;
+import static org.mockito.Mockito.doThrow;
+import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
@@ -56,6 +58,7 @@
 
     private static final int TEST_USER_SERIAL = 1000;
     private static final int TEST_USER_ID = 10;
+    private static final UserInfo TEST_USER = new UserInfo();
 
     private TestUserDataPreparer mUserDataPreparer;
 
@@ -72,6 +75,8 @@
 
     @Before
     public void setup() {
+        TEST_USER.id = TEST_USER_ID;
+        TEST_USER.serialNumber = TEST_USER_SERIAL;
         Context ctx = InstrumentationRegistry.getContext();
         FileUtils.deleteContents(ctx.getCacheDir());
         mInstallLock = new Object();
@@ -92,8 +97,7 @@
         userDeDir.mkdirs();
         File systemDeDir = mUserDataPreparer.getDataSystemDeDirectory(TEST_USER_ID);
         systemDeDir.mkdirs();
-        mUserDataPreparer
-                .prepareUserData(TEST_USER_ID, TEST_USER_SERIAL, StorageManager.FLAG_STORAGE_DE);
+        mUserDataPreparer.prepareUserData(TEST_USER, StorageManager.FLAG_STORAGE_DE);
         verify(mStorageManagerMock).prepareUserStorage(isNull(String.class), eq(TEST_USER_ID),
                 eq(TEST_USER_SERIAL), eq(StorageManager.FLAG_STORAGE_DE));
         verify(mInstaller).createUserData(isNull(String.class), eq(TEST_USER_ID),
@@ -110,8 +114,7 @@
         userCeDir.mkdirs();
         File systemCeDir = mUserDataPreparer.getDataSystemCeDirectory(TEST_USER_ID);
         systemCeDir.mkdirs();
-        mUserDataPreparer
-                .prepareUserData(TEST_USER_ID, TEST_USER_SERIAL, StorageManager.FLAG_STORAGE_CE);
+        mUserDataPreparer.prepareUserData(TEST_USER, StorageManager.FLAG_STORAGE_CE);
         verify(mStorageManagerMock).prepareUserStorage(isNull(String.class), eq(TEST_USER_ID),
                 eq(TEST_USER_SERIAL), eq(StorageManager.FLAG_STORAGE_CE));
         verify(mInstaller).createUserData(isNull(String.class), eq(TEST_USER_ID),
@@ -123,6 +126,28 @@
     }
 
     @Test
+    public void testPrepareUserData_forNewUser_destroysOnFailure() throws Exception {
+        TEST_USER.lastLoggedInTime = 0;
+        doThrow(new IllegalStateException("expected exception for test")).when(mStorageManagerMock)
+                .prepareUserStorage(isNull(String.class), eq(TEST_USER_ID), eq(TEST_USER_SERIAL),
+                        eq(StorageManager.FLAG_STORAGE_CE));
+        mUserDataPreparer.prepareUserData(TEST_USER, StorageManager.FLAG_STORAGE_CE);
+        verify(mStorageManagerMock).destroyUserStorage(isNull(String.class), eq(TEST_USER_ID),
+                eq(StorageManager.FLAG_STORAGE_CE));
+    }
+
+    @Test
+    public void testPrepareUserData_forExistingUser_doesNotDestroyOnFailure() throws Exception {
+        TEST_USER.lastLoggedInTime = System.currentTimeMillis();
+        doThrow(new IllegalStateException("expected exception for test")).when(mStorageManagerMock)
+                .prepareUserStorage(isNull(String.class), eq(TEST_USER_ID), eq(TEST_USER_SERIAL),
+                        eq(StorageManager.FLAG_STORAGE_CE));
+        mUserDataPreparer.prepareUserData(TEST_USER, StorageManager.FLAG_STORAGE_CE);
+        verify(mStorageManagerMock, never()).destroyUserStorage(isNull(String.class),
+                eq(TEST_USER_ID), eq(StorageManager.FLAG_STORAGE_CE));
+    }
+
+    @Test
     public void testDestroyUserData_De_DoesNotDestroyCe() throws Exception {
         // Add file in CE storage
         File systemCeDir = mUserDataPreparer.getDataSystemCeDirectory(TEST_USER_ID);
diff --git a/services/tests/mockingservicestests/src/com/android/server/am/BaseBroadcastQueueTest.java b/services/tests/mockingservicestests/src/com/android/server/am/BaseBroadcastQueueTest.java
new file mode 100644
index 0000000..a0beb17
--- /dev/null
+++ b/services/tests/mockingservicestests/src/com/android/server/am/BaseBroadcastQueueTest.java
@@ -0,0 +1,259 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.am;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyBoolean;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.ArgumentMatchers.anyLong;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+
+import android.annotation.NonNull;
+import android.app.usage.UsageStatsManagerInternal;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.IntentFilter;
+import android.content.pm.ActivityInfo;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManagerInternal;
+import android.content.pm.ResolveInfo;
+import android.os.Handler;
+import android.os.HandlerThread;
+import android.os.TestLooperManager;
+import android.os.UserHandle;
+import android.provider.Settings;
+import android.util.SparseArray;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import com.android.server.AlarmManagerInternal;
+import com.android.server.DropBoxManagerInternal;
+import com.android.server.LocalServices;
+import com.android.server.appop.AppOpsService;
+import com.android.server.wm.ActivityTaskManagerService;
+
+import org.junit.Rule;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.io.File;
+import java.util.Objects;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public abstract class BaseBroadcastQueueTest {
+
+    static final int USER_GUEST = 11;
+
+    static final String PACKAGE_ANDROID = "android";
+    static final String PACKAGE_PHONE = "com.android.phone";
+    static final String PACKAGE_RED = "com.example.red";
+    static final String PACKAGE_GREEN = "com.example.green";
+    static final String PACKAGE_BLUE = "com.example.blue";
+    static final String PACKAGE_YELLOW = "com.example.yellow";
+    static final String PACKAGE_ORANGE = "com.example.orange";
+
+    static final String PROCESS_SYSTEM = "system";
+
+    static final String CLASS_RED = "com.example.red.Red";
+    static final String CLASS_GREEN = "com.example.green.Green";
+    static final String CLASS_BLUE = "com.example.blue.Blue";
+    static final String CLASS_YELLOW = "com.example.yellow.Yellow";
+    static final String CLASS_ORANGE = "com.example.orange.Orange";
+
+    static final BroadcastProcessQueue.BroadcastPredicate BROADCAST_PREDICATE_ANY =
+            (r, i) -> true;
+
+    @Rule
+    public final ApplicationExitInfoTest.ServiceThreadRule
+            mServiceThreadRule = new ApplicationExitInfoTest.ServiceThreadRule();
+
+    @Mock
+    AppOpsService mAppOpsService;
+    @Mock
+    PackageManagerInternal mPackageManagerInt;
+    @Mock
+    UsageStatsManagerInternal mUsageStatsManagerInt;
+    @Mock
+    DropBoxManagerInternal mDropBoxManagerInt;
+    @Mock
+    AlarmManagerInternal mAlarmManagerInt;
+    @Mock
+    ProcessList mProcessList;
+
+    Context mContext;
+    ActivityManagerService mAms;
+    BroadcastConstants mConstants;
+    BroadcastSkipPolicy mSkipPolicy;
+    HandlerThread mHandlerThread;
+    TestLooperManager mLooper;
+    AtomicInteger mNextPid;
+
+    /**
+     * Map from PID to registered registered runtime receivers.
+     */
+    SparseArray<ReceiverList> mRegisteredReceivers = new SparseArray<>();
+
+    public void setUp() throws Exception {
+        MockitoAnnotations.initMocks(this);
+
+        mContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        mHandlerThread = new HandlerThread(getTag());
+        mHandlerThread.start();
+        // Pause all event processing until a test chooses to resume
+        mLooper = Objects.requireNonNull(InstrumentationRegistry.getInstrumentation()
+                .acquireLooperManager(mHandlerThread.getLooper()));
+        mNextPid = new AtomicInteger(100);
+
+        LocalServices.removeServiceForTest(DropBoxManagerInternal.class);
+        LocalServices.addService(DropBoxManagerInternal.class, mDropBoxManagerInt);
+        LocalServices.removeServiceForTest(PackageManagerInternal.class);
+        LocalServices.addService(PackageManagerInternal.class, mPackageManagerInt);
+        LocalServices.removeServiceForTest(AlarmManagerInternal.class);
+        LocalServices.addService(AlarmManagerInternal.class, mAlarmManagerInt);
+        doReturn(new ComponentName("", "")).when(mPackageManagerInt).getSystemUiServiceComponent();
+        doNothing().when(mPackageManagerInt).setPackageStoppedState(any(), anyBoolean(), anyInt());
+        doAnswer((invocation) -> {
+            return getUidForPackage(invocation.getArgument(0));
+        }).when(mPackageManagerInt).getPackageUid(any(), anyLong(), eq(UserHandle.USER_SYSTEM));
+
+        final ActivityManagerService realAms = new ActivityManagerService(
+                new TestInjector(mContext), mServiceThreadRule.getThread());
+        realAms.mActivityTaskManager = new ActivityTaskManagerService(mContext);
+        realAms.mActivityTaskManager.initialize(null, null, mContext.getMainLooper());
+        realAms.mAtmInternal = spy(realAms.mActivityTaskManager.getAtmInternal());
+        realAms.mOomAdjuster = spy(realAms.mOomAdjuster);
+        realAms.mPackageManagerInt = mPackageManagerInt;
+        realAms.mUsageStatsService = mUsageStatsManagerInt;
+        realAms.mProcessesReady = true;
+        mAms = spy(realAms);
+
+        mSkipPolicy = spy(new BroadcastSkipPolicy(mAms));
+        doReturn(null).when(mSkipPolicy).shouldSkipMessage(any(), any());
+        doReturn(false).when(mSkipPolicy).disallowBackgroundStart(any());
+
+        mConstants = new BroadcastConstants(Settings.Global.BROADCAST_FG_CONSTANTS);
+    }
+
+    public void tearDown() throws Exception {
+        mHandlerThread.quit();
+    }
+
+    static int getUidForPackage(@NonNull String packageName) {
+        switch (packageName) {
+            case PACKAGE_ANDROID: return android.os.Process.SYSTEM_UID;
+            case PACKAGE_PHONE: return android.os.Process.PHONE_UID;
+            case PACKAGE_RED: return android.os.Process.FIRST_APPLICATION_UID + 1;
+            case PACKAGE_GREEN: return android.os.Process.FIRST_APPLICATION_UID + 2;
+            case PACKAGE_BLUE: return android.os.Process.FIRST_APPLICATION_UID + 3;
+            case PACKAGE_YELLOW: return android.os.Process.FIRST_APPLICATION_UID + 4;
+            case PACKAGE_ORANGE: return android.os.Process.FIRST_APPLICATION_UID + 5;
+            default: throw new IllegalArgumentException();
+        }
+    }
+
+    static int getUidForPackage(@NonNull String packageName, int userId) {
+        return UserHandle.getUid(userId, getUidForPackage(packageName));
+    }
+
+    private class TestInjector extends ActivityManagerService.Injector {
+        TestInjector(Context context) {
+            super(context);
+        }
+
+        @Override
+        public AppOpsService getAppOpsService(File recentAccessesFile, File storageFile,
+                                              Handler handler) {
+            return mAppOpsService;
+        }
+
+        @Override
+        public Handler getUiHandler(ActivityManagerService service) {
+            return mHandlerThread.getThreadHandler();
+        }
+
+        @Override
+        public ProcessList getProcessList(ActivityManagerService service) {
+            return mProcessList;
+        }
+    }
+
+    abstract String getTag();
+
+    static ApplicationInfo makeApplicationInfo(String packageName) {
+        return makeApplicationInfo(packageName, packageName, UserHandle.USER_SYSTEM);
+    }
+
+    static ApplicationInfo makeApplicationInfo(String packageName, String processName, int userId) {
+        final ApplicationInfo ai = new ApplicationInfo();
+        ai.packageName = packageName;
+        ai.processName = processName;
+        ai.uid = getUidForPackage(packageName, userId);
+        return ai;
+    }
+
+    static ResolveInfo withPriority(ResolveInfo info, int priority) {
+        info.priority = priority;
+        return info;
+    }
+
+    static BroadcastFilter withPriority(BroadcastFilter filter, int priority) {
+        filter.setPriority(priority);
+        return filter;
+    }
+
+    static ResolveInfo makeManifestReceiver(String packageName, String name) {
+        return makeManifestReceiver(packageName, name, UserHandle.USER_SYSTEM);
+    }
+
+    static ResolveInfo makeManifestReceiver(String packageName, String name, int userId) {
+        return makeManifestReceiver(packageName, packageName, name, userId);
+    }
+
+    static ResolveInfo makeManifestReceiver(String packageName, String processName,
+            String name, int userId) {
+        final ResolveInfo ri = new ResolveInfo();
+        ri.activityInfo = new ActivityInfo();
+        ri.activityInfo.packageName = packageName;
+        ri.activityInfo.processName = processName;
+        ri.activityInfo.name = name;
+        ri.activityInfo.applicationInfo = makeApplicationInfo(packageName, processName, userId);
+        return ri;
+    }
+
+    BroadcastFilter makeRegisteredReceiver(ProcessRecord app) {
+        return makeRegisteredReceiver(app, 0);
+    }
+
+    BroadcastFilter makeRegisteredReceiver(ProcessRecord app, int priority) {
+        final ReceiverList receiverList = mRegisteredReceivers.get(app.getPid());
+        return makeRegisteredReceiver(receiverList, priority);
+    }
+
+    static BroadcastFilter makeRegisteredReceiver(ReceiverList receiverList, int priority) {
+        final IntentFilter filter = new IntentFilter();
+        filter.setPriority(priority);
+        final BroadcastFilter res = new BroadcastFilter(filter, receiverList,
+                receiverList.app.info.packageName, null, null, null, receiverList.uid,
+                receiverList.userId, false, false, true);
+        receiverList.add(res);
+        return res;
+    }
+}
diff --git a/services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueModernImplTest.java b/services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueModernImplTest.java
index ff04728..2378416 100644
--- a/services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueModernImplTest.java
+++ b/services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueModernImplTest.java
@@ -31,17 +31,6 @@
 import static com.android.server.am.BroadcastProcessQueue.REASON_CONTAINS_PRIORITIZED;
 import static com.android.server.am.BroadcastProcessQueue.insertIntoRunnableList;
 import static com.android.server.am.BroadcastProcessQueue.removeFromRunnableList;
-import static com.android.server.am.BroadcastQueueTest.CLASS_BLUE;
-import static com.android.server.am.BroadcastQueueTest.CLASS_GREEN;
-import static com.android.server.am.BroadcastQueueTest.CLASS_RED;
-import static com.android.server.am.BroadcastQueueTest.CLASS_YELLOW;
-import static com.android.server.am.BroadcastQueueTest.PACKAGE_BLUE;
-import static com.android.server.am.BroadcastQueueTest.PACKAGE_GREEN;
-import static com.android.server.am.BroadcastQueueTest.PACKAGE_RED;
-import static com.android.server.am.BroadcastQueueTest.PACKAGE_YELLOW;
-import static com.android.server.am.BroadcastQueueTest.getUidForPackage;
-import static com.android.server.am.BroadcastQueueTest.makeManifestReceiver;
-import static com.android.server.am.BroadcastQueueTest.withPriority;
 import static com.android.server.am.BroadcastRecord.isReceiverEquals;
 
 import static com.google.common.truth.Truth.assertThat;
@@ -74,17 +63,15 @@
 import android.content.IIntentReceiver;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.pm.ApplicationInfo;
 import android.content.pm.ResolveInfo;
 import android.media.AudioManager;
 import android.os.Bundle;
 import android.os.BundleMerger;
 import android.os.DropBoxManager;
-import android.os.HandlerThread;
 import android.os.Process;
 import android.os.SystemClock;
-import android.os.TestLooperManager;
 import android.os.UserHandle;
-import android.provider.Settings;
 import android.util.IndentingPrintWriter;
 import android.util.Pair;
 
@@ -108,11 +95,12 @@
 import java.util.Objects;
 
 @SmallTest
-public final class BroadcastQueueModernImplTest {
+public final class BroadcastQueueModernImplTest extends BaseBroadcastQueueTest {
+    private static final String TAG = "BroadcastQueueModernImplTest";
+
     private static final int TEST_UID = android.os.Process.FIRST_APPLICATION_UID;
     private static final int TEST_UID2 = android.os.Process.FIRST_APPLICATION_UID + 1;
 
-    @Mock ActivityManagerService mAms;
     @Mock ProcessRecord mProcess;
 
     @Mock BroadcastProcessQueue mQueue1;
@@ -120,11 +108,6 @@
     @Mock BroadcastProcessQueue mQueue3;
     @Mock BroadcastProcessQueue mQueue4;
 
-    HandlerThread mHandlerThread;
-    TestLooperManager mLooper;
-
-    BroadcastConstants mConstants;
-    private BroadcastSkipPolicy mSkipPolicy;
     BroadcastQueueModernImpl mImpl;
 
     BroadcastProcessQueue mHead;
@@ -136,22 +119,12 @@
 
     @Before
     public void setUp() throws Exception {
-        mHandlerThread = new HandlerThread(getClass().getSimpleName());
-        mHandlerThread.start();
+        super.setUp();
 
-        // Pause all event processing until a test chooses to resume
-        mLooper = Objects.requireNonNull(InstrumentationRegistry.getInstrumentation()
-                .acquireLooperManager(mHandlerThread.getLooper()));
-
-        mConstants = new BroadcastConstants(Settings.Global.BROADCAST_FG_CONSTANTS);
         mConstants.DELAY_URGENT_MILLIS = -120_000;
         mConstants.DELAY_NORMAL_MILLIS = 10_000;
         mConstants.DELAY_CACHED_MILLIS = 120_000;
 
-        mSkipPolicy = spy(new BroadcastSkipPolicy(mAms));
-        doReturn(null).when(mSkipPolicy).shouldSkipMessage(any(), any());
-        doReturn(false).when(mSkipPolicy).disallowBackgroundStart(any());
-
         final BroadcastHistory emptyHistory = new BroadcastHistory(mConstants) {
             public void addBroadcastToHistoryLocked(BroadcastRecord original) {
                 // Ignored
@@ -169,7 +142,12 @@
 
     @After
     public void tearDown() throws Exception {
-        mHandlerThread.quit();
+        super.tearDown();
+    }
+
+    @Override
+    public String getTag() {
+        return TAG;
     }
 
     /**
@@ -225,11 +203,6 @@
                 List.of(makeManifestReceiver(PACKAGE_GREEN, CLASS_GREEN)), false);
     }
 
-    private BroadcastRecord makeOrderedBroadcastRecord(Intent intent) {
-        return makeBroadcastRecord(intent, BroadcastOptions.makeBasic(),
-                List.of(makeManifestReceiver(PACKAGE_GREEN, CLASS_GREEN)), true);
-    }
-
     private BroadcastRecord makeBroadcastRecord(Intent intent, List receivers) {
         return makeBroadcastRecord(intent, BroadcastOptions.makeBasic(), receivers, false);
     }
@@ -246,8 +219,8 @@
 
     private BroadcastRecord makeBroadcastRecord(Intent intent, BroadcastOptions options,
             List receivers, IIntentReceiver resultTo, boolean ordered) {
-        return new BroadcastRecord(mImpl, intent, mProcess, PACKAGE_RED, null, 21, 42, false, null,
-                null, null, null, AppOpsManager.OP_NONE, options, receivers, null, resultTo,
+        return new BroadcastRecord(mImpl, intent, mProcess, PACKAGE_RED, null, 21, TEST_UID, false,
+                null, null, null, null, AppOpsManager.OP_NONE, options, receivers, null, resultTo,
                 Activity.RESULT_OK, null, null, ordered, false, false, UserHandle.USER_SYSTEM,
                 BackgroundStartPrivileges.NONE, false, null, PROCESS_STATE_UNKNOWN);
     }
@@ -259,12 +232,12 @@
 
     private void enqueueOrReplaceBroadcast(BroadcastProcessQueue queue,
             BroadcastRecord record, int recordIndex, long enqueueTime) {
-        queue.enqueueOrReplaceBroadcast(record, recordIndex, (r, i) -> {
-            throw new UnsupportedOperationException();
-        });
         record.enqueueTime = enqueueTime;
         record.enqueueRealTime = enqueueTime;
         record.enqueueClockTime = enqueueTime;
+        queue.enqueueOrReplaceBroadcast(record, recordIndex, (r, i) -> {
+            throw new UnsupportedOperationException();
+        });
     }
 
     @Test
@@ -419,6 +392,7 @@
         assertFalse(queue.isRunnable());
         assertEquals(BroadcastProcessQueue.REASON_CACHED_INFINITE_DEFER,
                 queue.getRunnableAtReason());
+        assertTrue(queue.shouldBeDeferred());
         assertEquals(ProcessList.SCHED_GROUP_UNDEFINED, queue.getPreferredSchedulingGroupLocked());
     }
 
@@ -445,6 +419,7 @@
         assertThat(cachedRunnableAt).isGreaterThan(notCachedRunnableAt);
         assertTrue(queue.isRunnable());
         assertEquals(BroadcastProcessQueue.REASON_CACHED, queue.getRunnableAtReason());
+        assertTrue(queue.shouldBeDeferred());
         assertEquals(ProcessList.SCHED_GROUP_UNDEFINED, queue.getPreferredSchedulingGroupLocked());
     }
 
@@ -526,11 +501,13 @@
         queue.invalidateRunnableAt();
         assertThat(queue.getRunnableAt()).isGreaterThan(airplaneRecord.enqueueTime);
         assertEquals(BroadcastProcessQueue.REASON_NORMAL, queue.getRunnableAtReason());
+        assertFalse(queue.shouldBeDeferred());
 
         mConstants.MAX_PENDING_BROADCASTS = 1;
         queue.invalidateRunnableAt();
         assertThat(queue.getRunnableAt()).isAtMost(airplaneRecord.enqueueTime);
         assertEquals(BroadcastProcessQueue.REASON_MAX_PENDING, queue.getRunnableAtReason());
+        assertFalse(queue.shouldBeDeferred());
     }
 
     @Test
@@ -549,10 +526,12 @@
         queue.setProcessAndUidState(mProcess, true, false);
         assertThat(queue.getRunnableAt()).isLessThan(timeTickRecord.enqueueTime);
         assertEquals(BroadcastProcessQueue.REASON_FOREGROUND, queue.getRunnableAtReason());
+        assertFalse(queue.shouldBeDeferred());
 
         queue.setProcessAndUidState(mProcess, false, false);
         assertThat(queue.getRunnableAt()).isGreaterThan(timeTickRecord.enqueueTime);
         assertEquals(BroadcastProcessQueue.REASON_NORMAL, queue.getRunnableAtReason());
+        assertFalse(queue.shouldBeDeferred());
     }
 
     @Test
@@ -570,6 +549,7 @@
 
         assertThat(queue.getRunnableAt()).isLessThan(timeTickRecord.enqueueTime);
         assertEquals(BroadcastProcessQueue.REASON_TOP_PROCESS, queue.getRunnableAtReason());
+        assertFalse(queue.shouldBeDeferred());
 
         doReturn(ActivityManager.PROCESS_STATE_SERVICE).when(mProcess).getSetProcState();
         queue.setProcessAndUidState(mProcess, false, false);
@@ -580,6 +560,7 @@
                 List.of(makeMockRegisteredReceiver())), 0);
         assertThat(queue.getRunnableAt()).isGreaterThan(timeTickRecord.enqueueTime);
         assertEquals(BroadcastProcessQueue.REASON_NORMAL, queue.getRunnableAtReason());
+        assertFalse(queue.shouldBeDeferred());
     }
 
     @Test
@@ -594,16 +575,19 @@
 
         assertThat(queue.getRunnableAt()).isGreaterThan(timeTickRecord.enqueueTime);
         assertEquals(BroadcastProcessQueue.REASON_NORMAL, queue.getRunnableAtReason());
+        assertFalse(queue.shouldBeDeferred());
 
         doReturn(true).when(mProcess).isPersistent();
         queue.setProcessAndUidState(mProcess, false, false);
         assertThat(queue.getRunnableAt()).isLessThan(timeTickRecord.enqueueTime);
         assertEquals(BroadcastProcessQueue.REASON_PERSISTENT, queue.getRunnableAtReason());
+        assertFalse(queue.shouldBeDeferred());
 
         doReturn(false).when(mProcess).isPersistent();
         queue.setProcessAndUidState(mProcess, false, false);
         assertThat(queue.getRunnableAt()).isGreaterThan(timeTickRecord.enqueueTime);
         assertEquals(BroadcastProcessQueue.REASON_NORMAL, queue.getRunnableAtReason());
+        assertFalse(queue.shouldBeDeferred());
     }
 
     @Test
@@ -618,6 +602,31 @@
 
         assertThat(queue.getRunnableAt()).isEqualTo(timeTickRecord.enqueueTime);
         assertEquals(BroadcastProcessQueue.REASON_CORE_UID, queue.getRunnableAtReason());
+        assertFalse(queue.shouldBeDeferred());
+    }
+
+    @Test
+    public void testRunnableAt_freezableCoreUid() {
+        final BroadcastProcessQueue queue = new BroadcastProcessQueue(mConstants,
+                "com.android.bluetooth", Process.BLUETOOTH_UID);
+
+        // Mark the process as freezable
+        queue.setProcessAndUidState(mProcess, false, true);
+        final Intent timeTick = new Intent(Intent.ACTION_TIME_TICK);
+        final BroadcastOptions options = BroadcastOptions.makeWithDeferUntilActive(true);
+        final BroadcastRecord timeTickRecord = makeBroadcastRecord(timeTick, options,
+                List.of(makeMockRegisteredReceiver()), false);
+        enqueueOrReplaceBroadcast(queue, timeTickRecord, 0);
+
+        assertEquals(Long.MAX_VALUE, queue.getRunnableAt());
+        assertEquals(BroadcastProcessQueue.REASON_CACHED_INFINITE_DEFER,
+                queue.getRunnableAtReason());
+        assertTrue(queue.shouldBeDeferred());
+
+        queue.setProcessAndUidState(mProcess, false, false);
+        assertThat(queue.getRunnableAt()).isEqualTo(timeTickRecord.enqueueTime);
+        assertEquals(BroadcastProcessQueue.REASON_CORE_UID, queue.getRunnableAtReason());
+        assertFalse(queue.shouldBeDeferred());
     }
 
     /**
@@ -1553,6 +1562,216 @@
         verifyPendingRecords(redQueue, List.of(userPresent, timeTick));
     }
 
+    @Test
+    public void testDeliveryDeferredForCached() throws Exception {
+        final ProcessRecord greenProcess = makeProcessRecord(makeApplicationInfo(PACKAGE_GREEN));
+        final ProcessRecord redProcess = makeProcessRecord(makeApplicationInfo(PACKAGE_RED));
+
+        final Intent timeTick = new Intent(Intent.ACTION_TIME_TICK);
+        final BroadcastRecord timeTickRecord = makeBroadcastRecord(timeTick,
+                List.of(makeRegisteredReceiver(greenProcess, 0)));
+
+        final Intent batteryChanged = new Intent(Intent.ACTION_BATTERY_CHANGED);
+        final BroadcastOptions optionsBatteryChanged =
+                BroadcastOptions.makeWithDeferUntilActive(true);
+        final BroadcastRecord batteryChangedRecord = makeBroadcastRecord(batteryChanged,
+                optionsBatteryChanged,
+                List.of(makeRegisteredReceiver(greenProcess, 10),
+                        makeRegisteredReceiver(redProcess, 0)),
+                false /* ordered */);
+
+        mImpl.enqueueBroadcastLocked(timeTickRecord);
+        mImpl.enqueueBroadcastLocked(batteryChangedRecord);
+
+        final BroadcastProcessQueue greenQueue = mImpl.getProcessQueue(PACKAGE_GREEN,
+                getUidForPackage(PACKAGE_GREEN));
+        final BroadcastProcessQueue redQueue = mImpl.getProcessQueue(PACKAGE_RED,
+                getUidForPackage(PACKAGE_RED));
+        assertEquals(BroadcastProcessQueue.REASON_NORMAL, greenQueue.getRunnableAtReason());
+        assertFalse(greenQueue.shouldBeDeferred());
+        assertEquals(BroadcastProcessQueue.REASON_BLOCKED, redQueue.getRunnableAtReason());
+        assertFalse(redQueue.shouldBeDeferred());
+
+        // Simulate process state change
+        greenQueue.setProcessAndUidState(greenProcess, false /* uidForeground */,
+                true /* processFreezable */);
+        greenQueue.updateDeferredStates(mImpl.mBroadcastConsumerDeferApply,
+                mImpl.mBroadcastConsumerDeferClear);
+
+        assertEquals(BroadcastProcessQueue.REASON_CACHED, greenQueue.getRunnableAtReason());
+        assertTrue(greenQueue.shouldBeDeferred());
+        // Once the broadcasts to green process are deferred, broadcasts to red process
+        // shouldn't be blocked anymore.
+        assertEquals(BroadcastProcessQueue.REASON_NORMAL, redQueue.getRunnableAtReason());
+        assertFalse(redQueue.shouldBeDeferred());
+
+        // All broadcasts to green process should be deferred.
+        greenQueue.forEachMatchingBroadcast(BROADCAST_PREDICATE_ANY, (r, i) -> {
+            assertEquals("Unexpected state for " + r,
+                    BroadcastRecord.DELIVERY_DEFERRED, r.getDeliveryState(i));
+        }, false /* andRemove */);
+        redQueue.forEachMatchingBroadcast(BROADCAST_PREDICATE_ANY, (r, i) -> {
+            assertEquals("Unexpected state for " + r,
+                    BroadcastRecord.DELIVERY_PENDING, r.getDeliveryState(i));
+        }, false /* andRemove */);
+
+        final Intent packageChanged = new Intent(Intent.ACTION_PACKAGE_CHANGED);
+        final BroadcastRecord packageChangedRecord = makeBroadcastRecord(packageChanged,
+                List.of(makeRegisteredReceiver(greenProcess, 0)));
+        mImpl.enqueueBroadcastLocked(packageChangedRecord);
+
+        assertEquals(BroadcastProcessQueue.REASON_CACHED, greenQueue.getRunnableAtReason());
+        assertTrue(greenQueue.shouldBeDeferred());
+        assertEquals(BroadcastProcessQueue.REASON_NORMAL, redQueue.getRunnableAtReason());
+        assertFalse(redQueue.shouldBeDeferred());
+
+        // All broadcasts to the green process, including the newly enqueued one, should be
+        // deferred.
+        greenQueue.forEachMatchingBroadcast(BROADCAST_PREDICATE_ANY, (r, i) -> {
+            assertEquals("Unexpected state for " + r,
+                    BroadcastRecord.DELIVERY_DEFERRED, r.getDeliveryState(i));
+        }, false /* andRemove */);
+        redQueue.forEachMatchingBroadcast(BROADCAST_PREDICATE_ANY, (r, i) -> {
+            assertEquals("Unexpected state for " + r,
+                    BroadcastRecord.DELIVERY_PENDING, r.getDeliveryState(i));
+        }, false /* andRemove */);
+
+        // Simulate process state change
+        greenQueue.setProcessAndUidState(greenProcess, false /* uidForeground */,
+                false /* processFreezable */);
+        greenQueue.updateDeferredStates(mImpl.mBroadcastConsumerDeferApply,
+                mImpl.mBroadcastConsumerDeferClear);
+
+        assertEquals(BroadcastProcessQueue.REASON_NORMAL, greenQueue.getRunnableAtReason());
+        assertFalse(greenQueue.shouldBeDeferred());
+        assertEquals(BroadcastProcessQueue.REASON_NORMAL, redQueue.getRunnableAtReason());
+        assertFalse(redQueue.shouldBeDeferred());
+
+        greenQueue.forEachMatchingBroadcast(BROADCAST_PREDICATE_ANY, (r, i) -> {
+            assertEquals("Unexpected state for " + r,
+                    BroadcastRecord.DELIVERY_PENDING, r.getDeliveryState(i));
+        }, false /* andRemove */);
+        redQueue.forEachMatchingBroadcast(BROADCAST_PREDICATE_ANY, (r, i) -> {
+            assertEquals("Unexpected state for " + r,
+                    BroadcastRecord.DELIVERY_PENDING, r.getDeliveryState(i));
+        }, false /* andRemove */);
+    }
+
+    @Test
+    public void testDeliveryDeferredForCached_withInfiniteDeferred() throws Exception {
+        final ProcessRecord greenProcess = makeProcessRecord(makeApplicationInfo(PACKAGE_GREEN));
+        final ProcessRecord redProcess = makeProcessRecord(makeApplicationInfo(PACKAGE_RED));
+
+        final Intent timeTick = new Intent(Intent.ACTION_TIME_TICK);
+        final BroadcastOptions optionsTimeTick = BroadcastOptions.makeWithDeferUntilActive(true);
+        final BroadcastRecord timeTickRecord = makeBroadcastRecord(timeTick, optionsTimeTick,
+                List.of(makeRegisteredReceiver(greenProcess, 0)), false /* ordered */);
+
+        final Intent batteryChanged = new Intent(Intent.ACTION_BATTERY_CHANGED);
+        final BroadcastOptions optionsBatteryChanged =
+                BroadcastOptions.makeWithDeferUntilActive(true);
+        final BroadcastRecord batteryChangedRecord = makeBroadcastRecord(batteryChanged,
+                optionsBatteryChanged,
+                List.of(makeRegisteredReceiver(greenProcess, 10),
+                        makeRegisteredReceiver(redProcess, 0)),
+                false /* ordered */);
+
+        mImpl.enqueueBroadcastLocked(timeTickRecord);
+        mImpl.enqueueBroadcastLocked(batteryChangedRecord);
+
+        final BroadcastProcessQueue greenQueue = mImpl.getProcessQueue(PACKAGE_GREEN,
+                getUidForPackage(PACKAGE_GREEN));
+        final BroadcastProcessQueue redQueue = mImpl.getProcessQueue(PACKAGE_RED,
+                getUidForPackage(PACKAGE_RED));
+        assertEquals(BroadcastProcessQueue.REASON_NORMAL, greenQueue.getRunnableAtReason());
+        assertFalse(greenQueue.shouldBeDeferred());
+        assertEquals(BroadcastProcessQueue.REASON_BLOCKED, redQueue.getRunnableAtReason());
+        assertFalse(redQueue.shouldBeDeferred());
+
+        // Simulate process state change
+        greenQueue.setProcessAndUidState(greenProcess, false /* uidForeground */,
+                true /* processFreezable */);
+        greenQueue.updateDeferredStates(mImpl.mBroadcastConsumerDeferApply,
+                mImpl.mBroadcastConsumerDeferClear);
+
+        assertEquals(BroadcastProcessQueue.REASON_CACHED_INFINITE_DEFER,
+                greenQueue.getRunnableAtReason());
+        assertTrue(greenQueue.shouldBeDeferred());
+        // Once the broadcasts to green process are deferred, broadcasts to red process
+        // shouldn't be blocked anymore.
+        assertEquals(BroadcastProcessQueue.REASON_NORMAL, redQueue.getRunnableAtReason());
+        assertFalse(redQueue.shouldBeDeferred());
+
+        // All broadcasts to green process should be deferred.
+        greenQueue.forEachMatchingBroadcast(BROADCAST_PREDICATE_ANY, (r, i) -> {
+            assertEquals("Unexpected state for " + r,
+                    BroadcastRecord.DELIVERY_DEFERRED, r.getDeliveryState(i));
+        }, false /* andRemove */);
+        redQueue.forEachMatchingBroadcast(BROADCAST_PREDICATE_ANY, (r, i) -> {
+            assertEquals("Unexpected state for " + r,
+                    BroadcastRecord.DELIVERY_PENDING, r.getDeliveryState(i));
+        }, false /* andRemove */);
+
+        final Intent packageChanged = new Intent(Intent.ACTION_PACKAGE_CHANGED);
+        final BroadcastOptions optionsPackageChanged =
+                BroadcastOptions.makeWithDeferUntilActive(true);
+        final BroadcastRecord packageChangedRecord = makeBroadcastRecord(packageChanged,
+                optionsPackageChanged,
+                List.of(makeRegisteredReceiver(greenProcess, 0)), false /* ordered */);
+        mImpl.enqueueBroadcastLocked(packageChangedRecord);
+
+        assertEquals(BroadcastProcessQueue.REASON_CACHED_INFINITE_DEFER,
+                greenQueue.getRunnableAtReason());
+        assertTrue(greenQueue.shouldBeDeferred());
+        assertEquals(BroadcastProcessQueue.REASON_NORMAL, redQueue.getRunnableAtReason());
+        assertFalse(redQueue.shouldBeDeferred());
+
+        // All broadcasts to the green process, including the newly enqueued one, should be
+        // deferred.
+        greenQueue.forEachMatchingBroadcast(BROADCAST_PREDICATE_ANY, (r, i) -> {
+            assertEquals("Unexpected state for " + r,
+                    BroadcastRecord.DELIVERY_DEFERRED, r.getDeliveryState(i));
+        }, false /* andRemove */);
+        redQueue.forEachMatchingBroadcast(BROADCAST_PREDICATE_ANY, (r, i) -> {
+            assertEquals("Unexpected state for " + r,
+                    BroadcastRecord.DELIVERY_PENDING, r.getDeliveryState(i));
+        }, false /* andRemove */);
+
+        // Simulate process state change
+        greenQueue.setProcessAndUidState(greenProcess, false /* uidForeground */,
+                false /* processFreezable */);
+        greenQueue.updateDeferredStates(mImpl.mBroadcastConsumerDeferApply,
+                mImpl.mBroadcastConsumerDeferClear);
+
+        assertEquals(BroadcastProcessQueue.REASON_NORMAL, greenQueue.getRunnableAtReason());
+        assertFalse(greenQueue.shouldBeDeferred());
+        assertEquals(BroadcastProcessQueue.REASON_NORMAL, redQueue.getRunnableAtReason());
+        assertFalse(redQueue.shouldBeDeferred());
+
+        greenQueue.forEachMatchingBroadcast(BROADCAST_PREDICATE_ANY, (r, i) -> {
+            assertEquals("Unexpected state for " + r,
+                    BroadcastRecord.DELIVERY_PENDING, r.getDeliveryState(i));
+        }, false /* andRemove */);
+        redQueue.forEachMatchingBroadcast(BROADCAST_PREDICATE_ANY, (r, i) -> {
+            assertEquals("Unexpected state for " + r,
+                    BroadcastRecord.DELIVERY_PENDING, r.getDeliveryState(i));
+        }, false /* andRemove */);
+    }
+
+    // TODO: Reuse BroadcastQueueTest.makeActiveProcessRecord()
+    private ProcessRecord makeProcessRecord(ApplicationInfo info) {
+        final ProcessRecord r = spy(new ProcessRecord(mAms, info, info.processName, info.uid));
+        r.setPid(mNextPid.incrementAndGet());
+        return r;
+    }
+
+    BroadcastFilter makeRegisteredReceiver(ProcessRecord app, int priority) {
+        final IIntentReceiver receiver = mock(IIntentReceiver.class);
+        final ReceiverList receiverList = new ReceiverList(mAms, app, app.getPid(), app.info.uid,
+                UserHandle.getUserId(app.info.uid), receiver);
+        return makeRegisteredReceiver(receiverList, priority);
+    }
+
     private Intent createPackageChangedIntent(int uid, List<String> componentNameList) {
         final Intent packageChangedIntent = new Intent(Intent.ACTION_PACKAGE_CHANGED);
         packageChangedIntent.putExtra(Intent.EXTRA_UID, uid);
diff --git a/services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueTest.java b/services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueTest.java
index 73eb237..e914726 100644
--- a/services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueTest.java
+++ b/services/tests/mockingservicestests/src/com/android/server/am/BroadcastQueueTest.java
@@ -62,58 +62,36 @@
 import android.app.IApplicationThread;
 import android.app.UidObserver;
 import android.app.usage.UsageEvents.Event;
-import android.app.usage.UsageStatsManagerInternal;
 import android.content.ComponentName;
-import android.content.Context;
 import android.content.IIntentReceiver;
 import android.content.Intent;
-import android.content.IntentFilter;
-import android.content.pm.ActivityInfo;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
-import android.content.pm.PackageManagerInternal;
-import android.content.pm.ResolveInfo;
 import android.os.Binder;
 import android.os.Bundle;
 import android.os.DeadObjectException;
-import android.os.Handler;
-import android.os.HandlerThread;
 import android.os.IBinder;
 import android.os.PowerExemptionManager;
 import android.os.SystemClock;
-import android.os.TestLooperManager;
 import android.os.UserHandle;
-import android.provider.Settings;
 import android.util.Log;
 import android.util.Pair;
-import android.util.SparseArray;
 import android.util.proto.ProtoOutputStream;
 
 import androidx.test.filters.MediumTest;
 import androidx.test.platform.app.InstrumentationRegistry;
 
-import com.android.server.AlarmManagerInternal;
-import com.android.server.DropBoxManagerInternal;
-import com.android.server.LocalServices;
-import com.android.server.am.ActivityManagerService.Injector;
-import com.android.server.appop.AppOpsService;
-import com.android.server.wm.ActivityTaskManagerService;
-
 import org.junit.After;
 import org.junit.Assume;
 import org.junit.Before;
-import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
 import org.junit.runners.Parameterized.Parameters;
 import org.mockito.ArgumentMatcher;
 import org.mockito.InOrder;
-import org.mockito.Mock;
-import org.mockito.MockitoAnnotations;
 import org.mockito.verification.VerificationMode;
 
-import java.io.File;
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
 import java.io.Writer;
@@ -125,7 +103,7 @@
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
-import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.UnaryOperator;
 
@@ -135,13 +113,9 @@
 @MediumTest
 @RunWith(Parameterized.class)
 @SuppressWarnings("GuardedBy")
-public class BroadcastQueueTest {
+public class BroadcastQueueTest extends BaseBroadcastQueueTest {
     private static final String TAG = "BroadcastQueueTest";
 
-    @Rule
-    public final ApplicationExitInfoTest.ServiceThreadRule
-            mServiceThreadRule = new ApplicationExitInfoTest.ServiceThreadRule();
-
     private final Impl mImpl;
 
     private enum Impl {
@@ -149,30 +123,8 @@
         MODERN,
     }
 
-    private Context mContext;
-    private HandlerThread mHandlerThread;
-    private TestLooperManager mLooper;
-    private AtomicInteger mNextPid;
-
-    @Mock
-    private AppOpsService mAppOpsService;
-    @Mock
-    private ProcessList mProcessList;
-    @Mock
-    private DropBoxManagerInternal mDropBoxManagerInt;
-    @Mock
-    private PackageManagerInternal mPackageManagerInt;
-    @Mock
-    private UsageStatsManagerInternal mUsageStatsManagerInt;
-    @Mock
-    private AlarmManagerInternal mAlarmManagerInt;
-
-    private ActivityManagerService mAms;
     private BroadcastQueue mQueue;
-    BroadcastConstants mConstants;
-    private BroadcastSkipPolicy mSkipPolicy;
     private UidObserver mUidObserver;
-    private UidObserver mUidCachedStateObserver;
 
     /**
      * Desired behavior of the next
@@ -182,11 +134,6 @@
             ProcessStartBehavior.SUCCESS);
 
     /**
-     * Map from PID to registered registered runtime receivers.
-     */
-    private SparseArray<ReceiverList> mRegisteredReceivers = new SparseArray<>();
-
-    /**
      * Collection of all active processes during current test run.
      */
     private List<ProcessRecord> mActiveProcesses = new ArrayList<>();
@@ -207,41 +154,8 @@
 
     @Before
     public void setUp() throws Exception {
-        MockitoAnnotations.initMocks(this);
+        super.setUp();
 
-        mContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
-
-        mHandlerThread = new HandlerThread(TAG);
-        mHandlerThread.start();
-
-        // Pause all event processing until a test chooses to resume
-        mLooper = Objects.requireNonNull(InstrumentationRegistry.getInstrumentation()
-                .acquireLooperManager(mHandlerThread.getLooper()));
-
-        mNextPid = new AtomicInteger(100);
-
-        LocalServices.removeServiceForTest(DropBoxManagerInternal.class);
-        LocalServices.addService(DropBoxManagerInternal.class, mDropBoxManagerInt);
-        LocalServices.removeServiceForTest(PackageManagerInternal.class);
-        LocalServices.addService(PackageManagerInternal.class, mPackageManagerInt);
-        LocalServices.removeServiceForTest(AlarmManagerInternal.class);
-        LocalServices.addService(AlarmManagerInternal.class, mAlarmManagerInt);
-        doReturn(new ComponentName("", "")).when(mPackageManagerInt).getSystemUiServiceComponent();
-        doNothing().when(mPackageManagerInt).setPackageStoppedState(any(), anyBoolean(), anyInt());
-        doAnswer((invocation) -> {
-            return getUidForPackage(invocation.getArgument(0));
-        }).when(mPackageManagerInt).getPackageUid(any(), anyLong(), eq(UserHandle.USER_SYSTEM));
-
-        final ActivityManagerService realAms = new ActivityManagerService(
-                new TestInjector(mContext), mServiceThreadRule.getThread());
-        realAms.mActivityTaskManager = new ActivityTaskManagerService(mContext);
-        realAms.mActivityTaskManager.initialize(null, null, mContext.getMainLooper());
-        realAms.mAtmInternal = spy(realAms.mActivityTaskManager.getAtmInternal());
-        realAms.mOomAdjuster = spy(realAms.mOomAdjuster);
-        realAms.mPackageManagerInt = mPackageManagerInt;
-        realAms.mUsageStatsService = mUsageStatsManagerInt;
-        realAms.mProcessesReady = true;
-        mAms = spy(realAms);
         doAnswer((invocation) -> {
             Log.v(TAG, "Intercepting startProcessLocked() for "
                     + Arrays.toString(invocation.getArguments()));
@@ -320,21 +234,11 @@
             return null;
         }).when(mAms).registerUidObserver(any(), anyInt(),
                 eq(ActivityManager.PROCESS_STATE_TOP), any());
-        doAnswer((invocation) -> {
-            mUidCachedStateObserver = invocation.getArgument(0);
-            return null;
-        }).when(mAms).registerUidObserver(any(), anyInt(),
-                eq(ActivityManager.PROCESS_STATE_LAST_ACTIVITY), any());
 
-        mConstants = new BroadcastConstants(Settings.Global.BROADCAST_FG_CONSTANTS);
-        mConstants.TIMEOUT = 100;
+        mConstants.TIMEOUT = 200;
         mConstants.ALLOW_BG_ACTIVITY_START_TIMEOUT = 0;
         mConstants.PENDING_COLD_START_CHECK_INTERVAL_MILLIS = 500;
 
-        mSkipPolicy = spy(new BroadcastSkipPolicy(mAms));
-        doReturn(null).when(mSkipPolicy).shouldSkipMessage(any(), any());
-        doReturn(false).when(mSkipPolicy).disallowBackgroundStart(any());
-
         final BroadcastHistory emptyHistory = new BroadcastHistory(mConstants) {
             public void addBroadcastToHistoryLocked(BroadcastRecord original) {
                 // Ignored
@@ -357,7 +261,7 @@
 
     @After
     public void tearDown() throws Exception {
-        mHandlerThread.quit();
+        super.tearDown();
 
         // Verify that all processes have finished handling broadcasts
         for (ProcessRecord app : mActiveProcesses) {
@@ -368,26 +272,9 @@
         }
     }
 
-    private class TestInjector extends Injector {
-        TestInjector(Context context) {
-            super(context);
-        }
-
-        @Override
-        public AppOpsService getAppOpsService(File recentAccessesFile, File storageFile,
-                Handler handler) {
-            return mAppOpsService;
-        }
-
-        @Override
-        public Handler getUiHandler(ActivityManagerService service) {
-            return mHandlerThread.getThreadHandler();
-        }
-
-        @Override
-        public ProcessList getProcessList(ActivityManagerService service) {
-            return mProcessList;
-        }
+    @Override
+    public String getTag() {
+        return TAG;
     }
 
     private enum ProcessStartBehavior {
@@ -533,62 +420,6 @@
         return Pair.create(app.getPid(), intent.getAction());
     }
 
-    static ApplicationInfo makeApplicationInfo(String packageName) {
-        return makeApplicationInfo(packageName, packageName, UserHandle.USER_SYSTEM);
-    }
-
-    static ApplicationInfo makeApplicationInfo(String packageName, String processName, int userId) {
-        final ApplicationInfo ai = new ApplicationInfo();
-        ai.packageName = packageName;
-        ai.processName = processName;
-        ai.uid = getUidForPackage(packageName, userId);
-        return ai;
-    }
-
-    static ResolveInfo withPriority(ResolveInfo info, int priority) {
-        info.priority = priority;
-        return info;
-    }
-
-    static BroadcastFilter withPriority(BroadcastFilter filter, int priority) {
-        filter.setPriority(priority);
-        return filter;
-    }
-
-    static ResolveInfo makeManifestReceiver(String packageName, String name) {
-        return makeManifestReceiver(packageName, name, UserHandle.USER_SYSTEM);
-    }
-
-    static ResolveInfo makeManifestReceiver(String packageName, String name, int userId) {
-        return makeManifestReceiver(packageName, packageName, name, userId);
-    }
-
-    static ResolveInfo makeManifestReceiver(String packageName, String processName, String name,
-            int userId) {
-        final ResolveInfo ri = new ResolveInfo();
-        ri.activityInfo = new ActivityInfo();
-        ri.activityInfo.packageName = packageName;
-        ri.activityInfo.processName = processName;
-        ri.activityInfo.name = name;
-        ri.activityInfo.applicationInfo = makeApplicationInfo(packageName, processName, userId);
-        return ri;
-    }
-
-    private BroadcastFilter makeRegisteredReceiver(ProcessRecord app) {
-        return makeRegisteredReceiver(app, 0);
-    }
-
-    private BroadcastFilter makeRegisteredReceiver(ProcessRecord app, int priority) {
-        final ReceiverList receiverList = mRegisteredReceivers.get(app.getPid());
-        final IntentFilter filter = new IntentFilter();
-        filter.setPriority(priority);
-        final BroadcastFilter res = new BroadcastFilter(filter, receiverList,
-                receiverList.app.info.packageName, null, null, null, receiverList.uid,
-                receiverList.userId, false, false, true);
-        receiverList.add(res);
-        return res;
-    }
-
     private BroadcastRecord makeBroadcastRecord(Intent intent, ProcessRecord callerApp,
             List<Object> receivers) {
         return makeBroadcastRecord(intent, callerApp, BroadcastOptions.makeBasic(),
@@ -707,6 +538,9 @@
     private void waitForIdle() throws Exception {
         mLooper.release();
         mQueue.waitForIdle(LOG_WRITER_INFO);
+        final CountDownLatch latch = new CountDownLatch(1);
+        mHandlerThread.getThreadHandler().post(latch::countDown);
+        latch.await();
         mLooper = Objects.requireNonNull(InstrumentationRegistry.getInstrumentation()
                 .acquireLooperManager(mHandlerThread.getLooper()));
     }
@@ -772,41 +606,6 @@
                 eq(userId), anyInt(), anyInt(), any());
     }
 
-    static final int USER_GUEST = 11;
-
-    static final String PACKAGE_ANDROID = "android";
-    static final String PACKAGE_PHONE = "com.android.phone";
-    static final String PACKAGE_RED = "com.example.red";
-    static final String PACKAGE_GREEN = "com.example.green";
-    static final String PACKAGE_BLUE = "com.example.blue";
-    static final String PACKAGE_YELLOW = "com.example.yellow";
-    static final String PACKAGE_ORANGE = "com.example.orange";
-
-    static final String PROCESS_SYSTEM = "system";
-
-    static final String CLASS_RED = "com.example.red.Red";
-    static final String CLASS_GREEN = "com.example.green.Green";
-    static final String CLASS_BLUE = "com.example.blue.Blue";
-    static final String CLASS_YELLOW = "com.example.yellow.Yellow";
-    static final String CLASS_ORANGE = "com.example.orange.Orange";
-
-    static int getUidForPackage(@NonNull String packageName) {
-        switch (packageName) {
-            case PACKAGE_ANDROID: return android.os.Process.SYSTEM_UID;
-            case PACKAGE_PHONE: return android.os.Process.PHONE_UID;
-            case PACKAGE_RED: return android.os.Process.FIRST_APPLICATION_UID + 1;
-            case PACKAGE_GREEN: return android.os.Process.FIRST_APPLICATION_UID + 2;
-            case PACKAGE_BLUE: return android.os.Process.FIRST_APPLICATION_UID + 3;
-            case PACKAGE_YELLOW: return android.os.Process.FIRST_APPLICATION_UID + 4;
-            case PACKAGE_ORANGE: return android.os.Process.FIRST_APPLICATION_UID + 5;
-            default: throw new IllegalArgumentException();
-        }
-    }
-
-    static int getUidForPackage(@NonNull String packageName, int userId) {
-        return UserHandle.getUid(userId, getUidForPackage(packageName));
-    }
-
     /**
      * Baseline verification of common debugging infrastructure, mostly to make
      * sure it doesn't crash.
@@ -2342,6 +2141,7 @@
 
         mUidObserver.onUidStateChanged(receiverGreenApp.info.uid,
                 ActivityManager.PROCESS_STATE_TOP, 0, ActivityManager.PROCESS_CAPABILITY_NONE);
+        waitForIdle();
 
         final Intent airplane = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
         final Intent timeTick = new Intent(Intent.ACTION_TIME_TICK);
@@ -2375,6 +2175,7 @@
 
         mUidObserver.onUidStateChanged(receiverGreenApp.info.uid,
                 ActivityManager.PROCESS_STATE_TOP, 0, ActivityManager.PROCESS_CAPABILITY_NONE);
+        waitForIdle();
 
         final Intent timeTick = new Intent(Intent.ACTION_TIME_TICK);
 
diff --git a/services/tests/mockingservicestests/src/com/android/server/power/OWNERS b/services/tests/mockingservicestests/src/com/android/server/power/OWNERS
index fb62520..37396f3 100644
--- a/services/tests/mockingservicestests/src/com/android/server/power/OWNERS
+++ b/services/tests/mockingservicestests/src/com/android/server/power/OWNERS
@@ -1,3 +1,3 @@
 include /services/core/java/com/android/server/power/OWNERS
 
-per-file ThermalManagerServiceMockingTest.java=wvw@google.com,xwxw@google.com
+per-file ThermalManagerServiceMockingTest.java=file:/THERMAL_OWNERS
diff --git a/services/tests/servicestests/src/com/android/server/locksettings/LockSettingsServiceTestable.java b/services/tests/servicestests/src/com/android/server/locksettings/LockSettingsServiceTestable.java
index 1c33d0d..18961c0 100644
--- a/services/tests/servicestests/src/com/android/server/locksettings/LockSettingsServiceTestable.java
+++ b/services/tests/servicestests/src/com/android/server/locksettings/LockSettingsServiceTestable.java
@@ -34,6 +34,7 @@
 
 import com.android.internal.widget.LockscreenCredential;
 import com.android.server.ServiceThread;
+import com.android.server.locksettings.SyntheticPasswordManager.SyntheticPassword;
 import com.android.server.locksettings.recoverablekeystore.RecoverableKeyStoreManager;
 import com.android.server.pm.UserManagerInternal;
 
@@ -203,6 +204,10 @@
     }
 
     @Override
+    void initKeystoreSuperKeys(int userId, SyntheticPassword sp, boolean allowExisting) {
+    }
+
+    @Override
     protected boolean isCredentialSharableWithParent(int userId) {
         UserInfo userInfo = mUserManager.getUserInfo(userId);
         return userInfo.isCloneProfile() || userInfo.isManagedProfile();
diff --git a/services/tests/servicestests/src/com/android/server/net/LockdownVpnTrackerTest.java b/services/tests/servicestests/src/com/android/server/net/LockdownVpnTrackerTest.java
index 949f8e7..0e881ef 100644
--- a/services/tests/servicestests/src/com/android/server/net/LockdownVpnTrackerTest.java
+++ b/services/tests/servicestests/src/com/android/server/net/LockdownVpnTrackerTest.java
@@ -221,7 +221,7 @@
         callCallbacksForNetworkConnect(defaultCallback, mNetwork);
 
         // Vpn is starting
-        verify(mVpn).startLegacyVpnPrivileged(mProfile, mNetwork, TEST_CELL_LP);
+        verify(mVpn).startLegacyVpnPrivileged(mProfile);
         verify(mNotificationManager).notify(any(), eq(SystemMessage.NOTE_VPN_STATUS),
                 argThat(notification -> isExpectedNotification(notification,
                         R.string.vpn_lockdown_connecting, R.drawable.vpn_disconnected)));
@@ -242,7 +242,7 @@
         // LockdownVpnTracker#handleStateChangedLocked. This is a bug.
         // TODO: consider fixing this.
         verify(mVpn, never()).stopVpnRunnerPrivileged();
-        verify(mVpn, never()).startLegacyVpnPrivileged(any(), any(), any());
+        verify(mVpn, never()).startLegacyVpnPrivileged(any());
         verify(mNotificationManager, never()).cancel(any(), eq(SystemMessage.NOTE_VPN_STATUS));
     }
 
@@ -302,7 +302,7 @@
 
         // Vpn is restarted.
         verify(mVpn).stopVpnRunnerPrivileged();
-        verify(mVpn).startLegacyVpnPrivileged(mProfile, mNetwork2, wifiLp);
+        verify(mVpn).startLegacyVpnPrivileged(mProfile);
         verify(mNotificationManager, never()).cancel(any(), eq(SystemMessage.NOTE_VPN_STATUS));
         verify(mNotificationManager).notify(any(), eq(SystemMessage.NOTE_VPN_STATUS),
                 argThat(notification -> isExpectedNotification(notification,
diff --git a/services/tests/servicestests/src/com/android/server/net/NetworkManagementServiceTest.java b/services/tests/servicestests/src/com/android/server/net/NetworkManagementServiceTest.java
index 2cdfbff..13dc120 100644
--- a/services/tests/servicestests/src/com/android/server/net/NetworkManagementServiceTest.java
+++ b/services/tests/servicestests/src/com/android/server/net/NetworkManagementServiceTest.java
@@ -57,7 +57,7 @@
 import androidx.test.runner.AndroidJUnit4;
 
 import com.android.internal.app.IBatteryStats;
-import com.android.net.flags.Flags;
+import com.android.modules.utils.build.SdkLevel;
 
 import org.junit.After;
 import org.junit.Before;
@@ -264,7 +264,7 @@
         verify(mCm).addUidToMeteredNetworkDenyList(TEST_UID);
 
         mNMService.setDataSaverModeEnabled(true);
-        if (Flags.setDataSaverViaCm()) {
+        if (SdkLevel.isAtLeastV()) {
             verify(mCm).setDataSaverEnabled(true);
         } else {
             verify(mNetdService).bandwidthEnableDataSaver(true);
@@ -284,7 +284,7 @@
         mNMService.setUidOnMeteredNetworkAllowlist(TEST_UID, false);
         verify(mCm).removeUidFromMeteredNetworkAllowList(TEST_UID);
         mNMService.setDataSaverModeEnabled(false);
-        if (Flags.setDataSaverViaCm()) {
+        if (SdkLevel.isAtLeastV()) {
             verify(mCm).setDataSaverEnabled(false);
         } else {
             verify(mNetdService).bandwidthEnableDataSaver(false);
diff --git a/services/tests/servicestests/src/com/android/server/power/OWNERS b/services/tests/servicestests/src/com/android/server/power/OWNERS
index ef4c0bf..fe93ebb 100644
--- a/services/tests/servicestests/src/com/android/server/power/OWNERS
+++ b/services/tests/servicestests/src/com/android/server/power/OWNERS
@@ -1,3 +1,3 @@
 include /services/core/java/com/android/server/power/OWNERS
 
-per-file ThermalManagerServiceTest.java=wvw@google.com, xwxw@google.com
\ No newline at end of file
+per-file ThermalManagerServiceTest.java=file:/THERMAL_OWNERS
diff --git a/telecomm/java/android/telecom/Call.java b/telecomm/java/android/telecom/Call.java
index c152a41..25bd14f 100644
--- a/telecomm/java/android/telecom/Call.java
+++ b/telecomm/java/android/telecom/Call.java
@@ -2951,11 +2951,11 @@
 
         for(String key : bundle.keySet()) {
             if (key != null) {
-                final Object value = bundle.get(key);
-                final Object newValue = newBundle.get(key);
                 if (!newBundle.containsKey(key)) {
                     return false;
                 }
+                final Object value = bundle.get(key);
+                final Object newValue = newBundle.get(key);
                 if (value instanceof Bundle && newValue instanceof Bundle) {
                     if (!areBundlesEqual((Bundle) value, (Bundle) newValue)) {
                         return false;
diff --git a/telephony/OWNERS b/telephony/OWNERS
index 3158ad8..287aa65 100644
--- a/telephony/OWNERS
+++ b/telephony/OWNERS
@@ -7,10 +7,12 @@
 tgunn@google.com
 huiwang@google.com
 jayachandranc@google.com
-chinmayd@google.com
 amruthr@google.com
 sasindran@google.com
 
 # Requiring TL ownership for new carrier config keys.
 per-file CarrierConfigManager.java=set noparent
 per-file CarrierConfigManager.java=amruthr@google.com,tgunn@google.com,rgreenwalt@google.com,satk@google.com
+
+#Domain Selection is jointly owned, add additional owners for domain selection specific files
+per-file TransportSelectorCallback.java,WwanSelectorCallback.java,DomainSelectionService.java,DomainSelectionService.aidl,DomainSelector.java,EmergencyRegResult.java,EmergencyRegResult.aidl,IDomainSelectionServiceController.aidl,IDomainSelector.aidl,ITransportSelectorCallback.aidl,ITransportSelectorResultCallback.aidl,IWwanSelectorCallback.aidl,IWwanSelectorResultCallback.aidl=hwangoo@google.com,forestchoi@google.com,avinashmp@google.com,mkoon@google.com,seheele@google.com,radhikaagrawal@google.com
diff --git a/tests/HwAccelerationTest/AndroidManifest.xml b/tests/HwAccelerationTest/AndroidManifest.xml
index 80c7a21..db3a992 100644
--- a/tests/HwAccelerationTest/AndroidManifest.xml
+++ b/tests/HwAccelerationTest/AndroidManifest.xml
@@ -789,6 +789,15 @@
             </intent-filter>
         </activity>
 
+        <activity android:name="BackdropBlurActivity"
+                  android:label="RenderEffect/BackdropBlur"
+                  android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="com.android.test.hwui.TEST"/>
+            </intent-filter>
+        </activity>
+
         <activity android:name="BlurActivity"
                   android:label="RenderEffect/Blur"
                   android:exported="true">
diff --git a/tests/HwAccelerationTest/res/drawable/robot_repeated.xml b/tests/HwAccelerationTest/res/drawable/robot_repeated.xml
new file mode 100644
index 0000000..bbb15b7
--- /dev/null
+++ b/tests/HwAccelerationTest/res/drawable/robot_repeated.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2022 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
+        android:src="@drawable/robot"
+        android:tileMode="repeat" android:gravity="fill" />
\ No newline at end of file
diff --git a/tests/HwAccelerationTest/src/com/android/test/hwui/BackdropBlurActivity.java b/tests/HwAccelerationTest/src/com/android/test/hwui/BackdropBlurActivity.java
new file mode 100644
index 0000000..8086b29
--- /dev/null
+++ b/tests/HwAccelerationTest/src/com/android/test/hwui/BackdropBlurActivity.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.test.hwui;
+
+import android.app.Activity;
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.ColorMatrix;
+import android.graphics.ColorMatrixColorFilter;
+import android.graphics.Outline;
+import android.graphics.RenderEffect;
+import android.graphics.Shader;
+import android.os.Bundle;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.ViewOutlineProvider;
+import android.view.animation.DecelerateInterpolator;
+import android.widget.FrameLayout;
+import android.widget.ScrollView;
+
+@SuppressWarnings({"UnusedDeclaration"})
+public class BackdropBlurActivity extends Activity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        final ScrollView scrollView = new ScrollView(this);
+        final FrameLayout innerFrame = new FrameLayout(this);
+        final View backgroundView = new View(this);
+        backgroundView.setBackgroundResource(R.drawable.robot_repeated);
+        innerFrame.addView(backgroundView, ViewGroup.LayoutParams.MATCH_PARENT, 10000);
+        scrollView.addView(innerFrame,
+                ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
+
+        final FrameLayout contentView = new FrameLayout(this);
+        contentView.addView(scrollView,
+                ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
+        contentView.addView(new BackdropBlurView(this), 300, 300);
+        setContentView(contentView);
+    }
+
+    private static class BackdropBlurView extends View {
+        private final float mBlurRadius = 60f;
+        private final float mSaturation = 1.8f;
+
+        private float mDownOffsetX;
+        private float mDownOffsetY;
+
+        BackdropBlurView(Context c) {
+            super(c);
+
+            // init RenderEffect.
+            final RenderEffect blurEffect = RenderEffect.createBlurEffect(
+                    mBlurRadius, mBlurRadius,
+                    null, Shader.TileMode.MIRROR // TileMode.MIRROR is better for blur.
+            );
+
+            final ColorMatrix colorMatrix = new ColorMatrix();
+            colorMatrix.setSaturation(mSaturation);
+            final RenderEffect effect = RenderEffect.createColorFilterEffect(
+                    new ColorMatrixColorFilter(colorMatrix), blurEffect
+            );
+            setBackdropRenderEffect(effect);
+
+            // clip to a round outline.
+            setOutlineProvider(new ViewOutlineProvider() {
+                @Override
+                public void getOutline(View v, Outline outline) {
+                    outline.setOval(0, 0, v.getWidth(), v.getHeight());
+                }
+            });
+            setClipToOutline(true);
+
+            animate().setInterpolator(new DecelerateInterpolator(2.0f));
+        }
+
+        @Override
+        protected void onDraw(Canvas canvas) {
+            super.onDraw(canvas);
+
+            canvas.drawColor(0x99F0F0F0);
+        }
+
+        @Override
+        public boolean onTouchEvent(MotionEvent event) {
+            switch (event.getActionMasked()) {
+                case MotionEvent.ACTION_DOWN:
+                    mDownOffsetX = event.getRawX() - getTranslationX();
+                    mDownOffsetY = event.getRawY() - getTranslationY();
+                    animate().scaleX(1.5f).scaleY(1.5f).start();
+                    break;
+                case MotionEvent.ACTION_UP:
+                case MotionEvent.ACTION_CANCEL:
+                    animate().scaleX(1f).scaleY(1f).start();
+                    break;
+                case MotionEvent.ACTION_MOVE:
+                    setTranslationX(event.getRawX() - mDownOffsetX);
+                    setTranslationY(event.getRawY() - mDownOffsetY);
+                    break;
+            }
+            return true;
+        }
+    }
+}
diff --git a/tests/NetworkSecurityConfigTest/OWNERS b/tests/NetworkSecurityConfigTest/OWNERS
index aa87958..90e1bed 100644
--- a/tests/NetworkSecurityConfigTest/OWNERS
+++ b/tests/NetworkSecurityConfigTest/OWNERS
@@ -1 +1,2 @@
 include /services/core/java/com/android/server/net/OWNERS
+include /core/java/android/security/net/OWNERS
diff --git a/tests/SmokeTestApps/Android.bp b/tests/SmokeTestApps/Android.bp
index 3505fe1..38ee8ac 100644
--- a/tests/SmokeTestApps/Android.bp
+++ b/tests/SmokeTestApps/Android.bp
@@ -11,4 +11,7 @@
     name: "SmokeTestTriggerApps",
     srcs: ["src/**/*.java"],
     sdk_version: "current",
+    errorprone: {
+        enabled: false,
+    },
 }
diff --git a/tests/TrustTests/src/android/trust/test/GrantAndRevokeTrustTest.kt b/tests/TrustTests/src/android/trust/test/GrantAndRevokeTrustTest.kt
index 1dfd5c0..d0e5626 100644
--- a/tests/TrustTests/src/android/trust/test/GrantAndRevokeTrustTest.kt
+++ b/tests/TrustTests/src/android/trust/test/GrantAndRevokeTrustTest.kt
@@ -93,7 +93,7 @@
     }
 
     @Test
-    @RequiresFlagsEnabled(android.security.Flags.FLAG_FIX_UNLOCKED_DEVICE_REQUIRED_KEYS)
+    @RequiresFlagsEnabled(android.security.Flags.FLAG_FIX_UNLOCKED_DEVICE_REQUIRED_KEYS_V2)
     fun grantCannotActivelyUnlockDevice() {
         // On automotive, trust agents can actively unlock the device.
         assumeFalse(packageManager.hasSystemFeature(PackageManager.FEATURE_AUTOMOTIVE))
@@ -120,7 +120,7 @@
     }
 
     @Test
-    @RequiresFlagsDisabled(android.security.Flags.FLAG_FIX_UNLOCKED_DEVICE_REQUIRED_KEYS)
+    @RequiresFlagsDisabled(android.security.Flags.FLAG_FIX_UNLOCKED_DEVICE_REQUIRED_KEYS_V2)
     fun grantCouldCauseWrongDeviceLockedStateDueToBug() {
         // On automotive, trust agents can actively unlock the device.
         assumeFalse(packageManager.hasSystemFeature(PackageManager.FEATURE_AUTOMOTIVE))
diff --git a/tests/TrustTests/src/android/trust/test/lib/LockStateTrackingRule.kt b/tests/TrustTests/src/android/trust/test/lib/LockStateTrackingRule.kt
index 5a8f828..0121809 100644
--- a/tests/TrustTests/src/android/trust/test/lib/LockStateTrackingRule.kt
+++ b/tests/TrustTests/src/android/trust/test/lib/LockStateTrackingRule.kt
@@ -36,7 +36,8 @@
 class LockStateTrackingRule : TestRule {
     private val context: Context = getApplicationContext()
     private val windowManager = checkNotNull(WindowManagerGlobal.getWindowManagerService())
-    private val keyguardManager = context.getSystemService(KeyguardManager::class.java) as KeyguardManager
+    private val keyguardManager =
+            context.getSystemService(KeyguardManager::class.java) as KeyguardManager
 
     @Volatile lateinit var trustState: TrustState
         private set
@@ -63,7 +64,7 @@
         wait("not trusted") { trustState.trusted == false }
     }
 
-    // TODO(b/299298338) remove this when removing FLAG_FIX_UNLOCKED_DEVICE_REQUIRED_KEYS
+    // TODO(b/299298338) remove this when removing FLAG_FIX_UNLOCKED_DEVICE_REQUIRED_KEYS_V2
     fun assertUnlockedButNotReally() {
         wait("device unlocked") { !keyguardManager.isDeviceLocked }
         wait("not trusted") { trustState.trusted == false }
@@ -87,7 +88,7 @@
             trustGrantedMessages: MutableList<String>
         ) {
             Log.d(TAG, "Device became trusted=$enabled")
-            trustState = trustState.copy(trusted=enabled)
+            trustState = trustState.copy(trusted = enabled)
         }
     }
 
diff --git a/tools/aapt2/Android.bp b/tools/aapt2/Android.bp
index ed3e1ac..40cba3e 100644
--- a/tools/aapt2/Android.bp
+++ b/tools/aapt2/Android.bp
@@ -119,6 +119,7 @@
         "io/Util.cpp",
         "io/ZipArchive.cpp",
         "link/AutoVersioner.cpp",
+        "link/FeatureFlagsFilter.cpp",
         "link/ManifestFixer.cpp",
         "link/NoDefaultResourceRemover.cpp",
         "link/PrivateAttributeMover.cpp",
diff --git a/tools/aapt2/cmd/Link.cpp b/tools/aapt2/cmd/Link.cpp
index f00be36..1fb5cc0 100644
--- a/tools/aapt2/cmd/Link.cpp
+++ b/tools/aapt2/cmd/Link.cpp
@@ -2513,6 +2513,28 @@
     }
   }
 
+  // Parse the feature flag values. An argument that starts with '@' points to a file to read flag
+  // values from.
+  std::vector<std::string> all_feature_flags_args;
+  for (const std::string& arg : feature_flags_args_) {
+    if (util::StartsWith(arg, "@")) {
+      const std::string path = arg.substr(1, arg.size() - 1);
+      std::string error;
+      if (!file::AppendArgsFromFile(path, &all_feature_flags_args, &error)) {
+        context.GetDiagnostics()->Error(android::DiagMessage(path) << error);
+        return 1;
+      }
+    } else {
+      all_feature_flags_args.push_back(arg);
+    }
+  }
+
+  for (const std::string& arg : all_feature_flags_args) {
+    if (ParseFeatureFlagsParameter(arg, context.GetDiagnostics(), &options_.feature_flag_values)) {
+      return 1;
+    }
+  }
+
   if (context.GetPackageType() != PackageType::kStaticLib && stable_id_file_path_) {
     if (!LoadStableIdMap(context.GetDiagnostics(), stable_id_file_path_.value(),
         &options_.stable_id_map)) {
diff --git a/tools/aapt2/cmd/Link.h b/tools/aapt2/cmd/Link.h
index a08f385..26713fd 100644
--- a/tools/aapt2/cmd/Link.h
+++ b/tools/aapt2/cmd/Link.h
@@ -17,11 +17,17 @@
 #ifndef AAPT2_LINK_H
 #define AAPT2_LINK_H
 
+#include <optional>
 #include <regex>
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
 
 #include "Command.h"
 #include "Resource.h"
 #include "androidfw/IDiagnostics.h"
+#include "cmd/Util.h"
 #include "format/binary/TableFlattener.h"
 #include "format/proto/ProtoSerialize.h"
 #include "link/ManifestFixer.h"
@@ -72,6 +78,7 @@
   bool use_sparse_encoding = false;
   std::unordered_set<std::string> extensions_to_not_compress;
   std::optional<std::regex> regex_to_not_compress;
+  FeatureFlagValues feature_flag_values;
 
   // Static lib options.
   bool no_static_lib_packages = false;
diff --git a/tools/aapt2/cmd/Util.cpp b/tools/aapt2/cmd/Util.cpp
index a92f24b..678d846 100644
--- a/tools/aapt2/cmd/Util.cpp
+++ b/tools/aapt2/cmd/Util.cpp
@@ -113,6 +113,56 @@
   return std::move(filter);
 }
 
+bool ParseFeatureFlagsParameter(StringPiece arg, android::IDiagnostics* diag,
+                                FeatureFlagValues* out_feature_flag_values) {
+  if (arg.empty()) {
+    return true;
+  }
+
+  for (StringPiece flag_and_value : util::Tokenize(arg, ',')) {
+    std::vector<std::string> parts = util::Split(flag_and_value, '=');
+    if (parts.empty()) {
+      continue;
+    }
+
+    if (parts.size() > 2) {
+      diag->Error(android::DiagMessage()
+                  << "Invalid feature flag and optional value '" << flag_and_value
+                  << "'. Must be in the format 'flag_name[=true|false]");
+      return false;
+    }
+
+    StringPiece flag_name = util::TrimWhitespace(parts[0]);
+    if (flag_name.empty()) {
+      diag->Error(android::DiagMessage() << "No name given for one or more flags in: " << arg);
+      return false;
+    }
+
+    std::optional<bool> flag_value = {};
+    if (parts.size() == 2) {
+      StringPiece str_flag_value = util::TrimWhitespace(parts[1]);
+      if (!str_flag_value.empty()) {
+        flag_value = ResourceUtils::ParseBool(parts[1]);
+        if (!flag_value.has_value()) {
+          diag->Error(android::DiagMessage() << "Invalid value for feature flag '" << flag_and_value
+                                             << "'. Value must be 'true' or 'false'");
+          return false;
+        }
+      }
+    }
+
+    if (auto [it, inserted] =
+            out_feature_flag_values->try_emplace(std::string(flag_name), flag_value);
+        !inserted) {
+      // We are allowing the same flag to appear multiple times, last value wins.
+      diag->Note(android::DiagMessage()
+                 << "Value for feature flag '" << flag_name << "' was given more than once");
+      it->second = flag_value;
+    }
+  }
+  return true;
+}
+
 // Adjust the SplitConstraints so that their SDK version is stripped if it
 // is less than or equal to the minSdk. Otherwise the resources that have had
 // their SDK version stripped due to minSdk won't ever match.
diff --git a/tools/aapt2/cmd/Util.h b/tools/aapt2/cmd/Util.h
index 712c07b..9ece5dd 100644
--- a/tools/aapt2/cmd/Util.h
+++ b/tools/aapt2/cmd/Util.h
@@ -17,8 +17,13 @@
 #ifndef AAPT_SPLIT_UTIL_H
 #define AAPT_SPLIT_UTIL_H
 
+#include <functional>
+#include <map>
+#include <memory>
+#include <optional>
 #include <regex>
 #include <set>
+#include <string>
 #include <unordered_set>
 
 #include "AppInfo.h"
@@ -32,6 +37,8 @@
 
 namespace aapt {
 
+using FeatureFlagValues = std::map<std::string, std::optional<bool>, std::less<>>;
+
 // Parses a configuration density (ex. hdpi, xxhdpi, 234dpi, anydpi, etc).
 // Returns Nothing and logs a human friendly error message if the string was not legal.
 std::optional<uint16_t> ParseTargetDensityParameter(android::StringPiece arg,
@@ -48,6 +55,13 @@
 std::unique_ptr<IConfigFilter> ParseConfigFilterParameters(const std::vector<std::string>& args,
                                                            android::IDiagnostics* diag);
 
+// Parses a feature flags parameter, which can contain one or more pairs of flag names and optional
+// values, and fills in `out_feature_flag_values` with the parsed values. The pairs in the argument
+// are separated by ',' and the name is separated from the value by '=' if there is a value given.
+// Example arg: "flag1=true,flag2=false,flag3=,flag4" where flag3 and flag4 have no given value.
+bool ParseFeatureFlagsParameter(android::StringPiece arg, android::IDiagnostics* diag,
+                                FeatureFlagValues* out_feature_flag_values);
+
 // Adjust the SplitConstraints so that their SDK version is stripped if it
 // is less than or equal to the min_sdk. Otherwise the resources that have had
 // their SDK version stripped due to min_sdk won't ever match.
diff --git a/tools/aapt2/cmd/Util_test.cpp b/tools/aapt2/cmd/Util_test.cpp
index 139bfbc..723d87e 100644
--- a/tools/aapt2/cmd/Util_test.cpp
+++ b/tools/aapt2/cmd/Util_test.cpp
@@ -25,6 +25,7 @@
 #include "util/Files.h"
 
 using ::android::ConfigDescription;
+using testing::Pair;
 using testing::UnorderedElementsAre;
 
 namespace aapt {
@@ -354,6 +355,51 @@
   EXPECT_CONFIG_EQ(constraints, expected_configuration);
 }
 
+TEST(UtilTest, ParseFeatureFlagsParameter_Empty) {
+  auto diagnostics = test::ContextBuilder().Build()->GetDiagnostics();
+  FeatureFlagValues feature_flag_values;
+  ASSERT_TRUE(ParseFeatureFlagsParameter("", diagnostics, &feature_flag_values));
+  EXPECT_TRUE(feature_flag_values.empty());
+}
+
+TEST(UtilTest, ParseFeatureFlagsParameter_TooManyParts) {
+  auto diagnostics = test::ContextBuilder().Build()->GetDiagnostics();
+  FeatureFlagValues feature_flag_values;
+  ASSERT_FALSE(ParseFeatureFlagsParameter("foo=bar=baz", diagnostics, &feature_flag_values));
+}
+
+TEST(UtilTest, ParseFeatureFlagsParameter_NoNameGiven) {
+  auto diagnostics = test::ContextBuilder().Build()->GetDiagnostics();
+  FeatureFlagValues feature_flag_values;
+  ASSERT_FALSE(ParseFeatureFlagsParameter("foo=true,=false", diagnostics, &feature_flag_values));
+}
+
+TEST(UtilTest, ParseFeatureFlagsParameter_InvalidValue) {
+  auto diagnostics = test::ContextBuilder().Build()->GetDiagnostics();
+  FeatureFlagValues feature_flag_values;
+  ASSERT_FALSE(ParseFeatureFlagsParameter("foo=true,bar=42", diagnostics, &feature_flag_values));
+}
+
+TEST(UtilTest, ParseFeatureFlagsParameter_DuplicateFlag) {
+  auto diagnostics = test::ContextBuilder().Build()->GetDiagnostics();
+  FeatureFlagValues feature_flag_values;
+  ASSERT_TRUE(
+      ParseFeatureFlagsParameter("foo=true,bar=true,foo=false", diagnostics, &feature_flag_values));
+  EXPECT_THAT(feature_flag_values, UnorderedElementsAre(Pair("foo", std::optional<bool>(false)),
+                                                        Pair("bar", std::optional<bool>(true))));
+}
+
+TEST(UtilTest, ParseFeatureFlagsParameter_Valid) {
+  auto diagnostics = test::ContextBuilder().Build()->GetDiagnostics();
+  FeatureFlagValues feature_flag_values;
+  ASSERT_TRUE(ParseFeatureFlagsParameter("foo= true, bar =FALSE,baz=, quux", diagnostics,
+                                         &feature_flag_values));
+  EXPECT_THAT(feature_flag_values,
+              UnorderedElementsAre(Pair("foo", std::optional<bool>(true)),
+                                   Pair("bar", std::optional<bool>(false)),
+                                   Pair("baz", std::nullopt), Pair("quux", std::nullopt)));
+}
+
 TEST (UtilTest, AdjustSplitConstraintsForMinSdk) {
   std::unique_ptr<IAaptContext> context = test::ContextBuilder().Build();
 
diff --git a/tools/aapt2/link/FeatureFlagsFilter.cpp b/tools/aapt2/link/FeatureFlagsFilter.cpp
new file mode 100644
index 0000000..fdf3f74
--- /dev/null
+++ b/tools/aapt2/link/FeatureFlagsFilter.cpp
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "link/FeatureFlagsFilter.h"
+
+#include <string_view>
+
+#include "androidfw/IDiagnostics.h"
+#include "androidfw/Source.h"
+#include "util/Util.h"
+#include "xml/XmlDom.h"
+#include "xml/XmlUtil.h"
+
+using ::aapt::xml::Element;
+using ::aapt::xml::Node;
+using ::aapt::xml::NodeCast;
+
+namespace aapt {
+
+class FlagsVisitor : public xml::Visitor {
+ public:
+  explicit FlagsVisitor(android::IDiagnostics* diagnostics,
+                        const FeatureFlagValues& feature_flag_values,
+                        const FeatureFlagsFilterOptions& options)
+      : diagnostics_(diagnostics), feature_flag_values_(feature_flag_values), options_(options) {
+  }
+
+  void Visit(xml::Element* node) override {
+    std::erase_if(node->children,
+                  [this](std::unique_ptr<xml::Node>& node) { return ShouldRemove(node); });
+    VisitChildren(node);
+  }
+
+  bool HasError() const {
+    return has_error_;
+  }
+
+ private:
+  bool ShouldRemove(std::unique_ptr<xml::Node>& node) {
+    if (const auto* el = NodeCast<Element>(node.get())) {
+      auto* attr = el->FindAttribute(xml::kSchemaAndroid, "featureFlag");
+      if (attr == nullptr) {
+        return false;
+      }
+
+      bool negated = false;
+      std::string_view flag_name = util::TrimWhitespace(attr->value);
+      if (flag_name.starts_with('!')) {
+        negated = true;
+        flag_name = flag_name.substr(1);
+      }
+
+      if (auto it = feature_flag_values_.find(std::string(flag_name));
+          it != feature_flag_values_.end()) {
+        if (it->second.has_value()) {
+          if (options_.remove_disabled_elements) {
+            // Remove if flag==true && attr=="!flag" (negated) OR flag==false && attr=="flag"
+            return *it->second == negated;
+          }
+        } else if (options_.flags_must_have_value) {
+          diagnostics_->Error(android::DiagMessage(node->line_number)
+                              << "attribute 'android:featureFlag' has flag '" << flag_name
+                              << "' without a true/false value from --feature_flags parameter");
+          has_error_ = true;
+          return false;
+        }
+      } else if (options_.fail_on_unrecognized_flags) {
+        diagnostics_->Error(android::DiagMessage(node->line_number)
+                            << "attribute 'android:featureFlag' has flag '" << flag_name
+                            << "' not found in flags from --feature_flags parameter");
+        has_error_ = true;
+        return false;
+      }
+    }
+
+    return false;
+  }
+
+  android::IDiagnostics* diagnostics_;
+  const FeatureFlagValues& feature_flag_values_;
+  const FeatureFlagsFilterOptions& options_;
+  bool has_error_ = false;
+};
+
+bool FeatureFlagsFilter::Consume(IAaptContext* context, xml::XmlResource* doc) {
+  FlagsVisitor visitor(context->GetDiagnostics(), feature_flag_values_, options_);
+  doc->root->Accept(&visitor);
+  return !visitor.HasError();
+}
+
+}  // namespace aapt
diff --git a/tools/aapt2/link/FeatureFlagsFilter.h b/tools/aapt2/link/FeatureFlagsFilter.h
new file mode 100644
index 0000000..1d342a7
--- /dev/null
+++ b/tools/aapt2/link/FeatureFlagsFilter.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <optional>
+#include <string>
+#include <unordered_map>
+#include <utility>
+
+#include "android-base/macros.h"
+#include "cmd/Util.h"
+#include "process/IResourceTableConsumer.h"
+
+namespace aapt {
+
+struct FeatureFlagsFilterOptions {
+  // If true, elements whose featureFlag values are false (i.e., disabled feature) will be removed.
+  bool remove_disabled_elements = true;
+
+  // If true, `Consume()` will return false (error) if a flag was found that is not in
+  // `feature_flag_values`.
+  bool fail_on_unrecognized_flags = true;
+
+  // If true, `Consume()` will return false (error) if a flag was found whose value in
+  // `feature_flag_values` is not defined (std::nullopt).
+  bool flags_must_have_value = true;
+};
+
+// Looks for the `android:featureFlag` attribute in each XML element, validates the flag names and
+// values, and removes elements according to the values in `feature_flag_values`. An element will be
+// removed if the flag's given value is FALSE. A "!" before the flag name in the attribute indicates
+// a boolean NOT operation, i.e., an element will be removed if the flag's given value is TRUE. For
+// example, if the XML is the following:
+//
+//   <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+//     <permission android:name="FOO" android:featureFlag="!flag"
+//                 android:protectionLevel="normal" />
+//     <permission android:name="FOO" android:featureFlag="flag"
+//                 android:protectionLevel="dangerous" />
+//   </manifest>
+//
+// If `feature_flag_values` contains {"flag", true}, then the <permission> element with
+// protectionLevel="normal" will be removed, and the <permission> element with
+// protectionLevel="normal" will be kept.
+//
+// The `Consume()` function will return false if there is an invalid flag found (see
+// FeatureFlagsFilterOptions for customizing the filter's validation behavior). Do not use the XML
+// further if there are errors as there may be elements removed already.
+class FeatureFlagsFilter : public IXmlResourceConsumer {
+ public:
+  explicit FeatureFlagsFilter(FeatureFlagValues feature_flag_values,
+                              FeatureFlagsFilterOptions options)
+      : feature_flag_values_(std::move(feature_flag_values)), options_(options) {
+  }
+
+  bool Consume(IAaptContext* context, xml::XmlResource* doc) override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(FeatureFlagsFilter);
+
+  const FeatureFlagValues feature_flag_values_;
+  const FeatureFlagsFilterOptions options_;
+};
+
+}  // namespace aapt
diff --git a/tools/aapt2/link/FeatureFlagsFilter_test.cpp b/tools/aapt2/link/FeatureFlagsFilter_test.cpp
new file mode 100644
index 0000000..53086cc
--- /dev/null
+++ b/tools/aapt2/link/FeatureFlagsFilter_test.cpp
@@ -0,0 +1,236 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "link/FeatureFlagsFilter.h"
+
+#include <string_view>
+
+#include "test/Test.h"
+
+using ::testing::IsNull;
+using ::testing::NotNull;
+
+namespace aapt {
+
+// Returns null if there was an error from FeatureFlagsFilter.
+std::unique_ptr<xml::XmlResource> VerifyWithOptions(std::string_view str,
+                                                    const FeatureFlagValues& feature_flag_values,
+                                                    const FeatureFlagsFilterOptions& options) {
+  std::unique_ptr<xml::XmlResource> doc = test::BuildXmlDom(str);
+  FeatureFlagsFilter filter(feature_flag_values, options);
+  if (filter.Consume(test::ContextBuilder().Build().get(), doc.get())) {
+    return doc;
+  }
+  return {};
+}
+
+// Returns null if there was an error from FeatureFlagsFilter.
+std::unique_ptr<xml::XmlResource> Verify(std::string_view str,
+                                         const FeatureFlagValues& feature_flag_values) {
+  return VerifyWithOptions(str, feature_flag_values, {});
+}
+
+TEST(FeatureFlagsFilterTest, NoFeatureFlagAttributes) {
+  auto doc = Verify(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <permission android:name="FOO" />
+    </manifest>)EOF",
+                    {{"flag", false}});
+  ASSERT_THAT(doc, NotNull());
+  auto root = doc->root.get();
+  ASSERT_THAT(root, NotNull());
+  auto maybe_removed = root->FindChild({}, "permission");
+  ASSERT_THAT(maybe_removed, NotNull());
+}
+TEST(FeatureFlagsFilterTest, RemoveElementWithDisabledFlag) {
+  auto doc = Verify(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <permission android:name="FOO" android:featureFlag="flag" />
+    </manifest>)EOF",
+                    {{"flag", false}});
+  ASSERT_THAT(doc, NotNull());
+  auto root = doc->root.get();
+  ASSERT_THAT(root, NotNull());
+  auto maybe_removed = root->FindChild({}, "permission");
+  ASSERT_THAT(maybe_removed, IsNull());
+}
+
+TEST(FeatureFlagsFilterTest, RemoveElementWithNegatedEnabledFlag) {
+  auto doc = Verify(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <permission android:name="FOO" android:featureFlag="!flag" />
+    </manifest>)EOF",
+                    {{"flag", true}});
+  ASSERT_THAT(doc, NotNull());
+  auto root = doc->root.get();
+  ASSERT_THAT(root, NotNull());
+  auto maybe_removed = root->FindChild({}, "permission");
+  ASSERT_THAT(maybe_removed, IsNull());
+}
+
+TEST(FeatureFlagsFilterTest, KeepElementWithEnabledFlag) {
+  auto doc = Verify(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <permission android:name="FOO" android:featureFlag="flag" />
+    </manifest>)EOF",
+                    {{"flag", true}});
+  ASSERT_THAT(doc, NotNull());
+  auto root = doc->root.get();
+  ASSERT_THAT(root, NotNull());
+  auto maybe_removed = root->FindChild({}, "permission");
+  ASSERT_THAT(maybe_removed, NotNull());
+}
+
+TEST(FeatureFlagsFilterTest, SideBySideEnabledAndDisabled) {
+  auto doc = Verify(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <permission android:name="FOO" android:featureFlag="!flag"
+                  android:protectionLevel="normal" />
+      <permission android:name="FOO" android:featureFlag="flag"
+                  android:protectionLevel="dangerous" />
+    </manifest>)EOF",
+                    {{"flag", true}});
+  ASSERT_THAT(doc, NotNull());
+  auto root = doc->root.get();
+  ASSERT_THAT(root, NotNull());
+  auto children = root->GetChildElements();
+  ASSERT_EQ(children.size(), 1);
+  auto attr = children[0]->FindAttribute(xml::kSchemaAndroid, "protectionLevel");
+  ASSERT_THAT(attr, NotNull());
+  ASSERT_EQ(attr->value, "dangerous");
+}
+
+TEST(FeatureFlagsFilterTest, RemoveDeeplyNestedElement) {
+  auto doc = Verify(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <application>
+        <provider />
+        <activity>
+          <layout android:featureFlag="!flag" />
+        </activity>
+      </application>
+    </manifest>)EOF",
+                    {{"flag", true}});
+  ASSERT_THAT(doc, NotNull());
+  auto root = doc->root.get();
+  ASSERT_THAT(root, NotNull());
+  auto application = root->FindChild({}, "application");
+  ASSERT_THAT(application, NotNull());
+  auto activity = application->FindChild({}, "activity");
+  ASSERT_THAT(activity, NotNull());
+  auto maybe_removed = activity->FindChild({}, "layout");
+  ASSERT_THAT(maybe_removed, IsNull());
+}
+
+TEST(FeatureFlagsFilterTest, KeepDeeplyNestedElement) {
+  auto doc = Verify(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <application>
+        <provider />
+        <activity>
+          <layout android:featureFlag="flag" />
+        </activity>
+      </application>
+    </manifest>)EOF",
+                    {{"flag", true}});
+  ASSERT_THAT(doc, NotNull());
+  auto root = doc->root.get();
+  ASSERT_THAT(root, NotNull());
+  auto application = root->FindChild({}, "application");
+  ASSERT_THAT(application, NotNull());
+  auto activity = application->FindChild({}, "activity");
+  ASSERT_THAT(activity, NotNull());
+  auto maybe_removed = activity->FindChild({}, "layout");
+  ASSERT_THAT(maybe_removed, NotNull());
+}
+
+TEST(FeatureFlagsFilterTest, FailOnEmptyFeatureFlagAttribute) {
+  auto doc = Verify(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <permission android:name="FOO" android:featureFlag=" " />
+    </manifest>)EOF",
+                    {{"flag", false}});
+  ASSERT_THAT(doc, IsNull());
+}
+
+TEST(FeatureFlagsFilterTest, FailOnFlagWithNoGivenValue) {
+  auto doc = Verify(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <permission android:name="FOO" android:featureFlag="flag" />
+    </manifest>)EOF",
+                    {{"flag", std::nullopt}});
+  ASSERT_THAT(doc, IsNull());
+}
+
+TEST(FeatureFlagsFilterTest, FailOnUnrecognizedFlag) {
+  auto doc = Verify(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <permission android:name="FOO" android:featureFlag="unrecognized" />
+    </manifest>)EOF",
+                    {{"flag", true}});
+  ASSERT_THAT(doc, IsNull());
+}
+
+TEST(FeatureFlagsFilterTest, FailOnMultipleValidationErrors) {
+  auto doc = Verify(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <permission android:name="FOO" android:featureFlag="bar" />
+      <permission android:name="FOO" android:featureFlag="unrecognized" />
+    </manifest>)EOF",
+                    {{"flag", std::nullopt}});
+  ASSERT_THAT(doc, IsNull());
+}
+
+TEST(FeatureFlagsFilterTest, OptionRemoveDisabledElementsIsFalse) {
+  auto doc = VerifyWithOptions(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <permission android:name="FOO" android:featureFlag="flag" />
+    </manifest>)EOF",
+                               {{"flag", false}}, {.remove_disabled_elements = false});
+  ASSERT_THAT(doc, NotNull());
+  auto root = doc->root.get();
+  ASSERT_THAT(root, NotNull());
+  auto maybe_removed = root->FindChild({}, "permission");
+  ASSERT_THAT(maybe_removed, NotNull());
+}
+
+TEST(FeatureFlagsFilterTest, OptionFlagsMustHaveValueIsFalse) {
+  auto doc = VerifyWithOptions(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <permission android:name="FOO" android:featureFlag="flag" />
+    </manifest>)EOF",
+                               {{"flag", std::nullopt}}, {.flags_must_have_value = false});
+  ASSERT_THAT(doc, NotNull());
+  auto root = doc->root.get();
+  ASSERT_THAT(root, NotNull());
+  auto maybe_removed = root->FindChild({}, "permission");
+  ASSERT_THAT(maybe_removed, NotNull());
+}
+
+TEST(FeatureFlagsFilterTest, OptionFailOnUnrecognizedFlagsIsFalse) {
+  auto doc = VerifyWithOptions(R"EOF(
+    <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="android">
+      <permission android:name="FOO" android:featureFlag="unrecognized" />
+    </manifest>)EOF",
+                               {{"flag", true}}, {.fail_on_unrecognized_flags = false});
+  ASSERT_THAT(doc, NotNull());
+  auto root = doc->root.get();
+  ASSERT_THAT(root, NotNull());
+  auto maybe_removed = root->FindChild({}, "permission");
+  ASSERT_THAT(maybe_removed, NotNull());
+}
+
+}  // namespace aapt
diff --git a/tools/lint/README.md b/tools/lint/README.md
index b235ad6..ff8e442 100644
--- a/tools/lint/README.md
+++ b/tools/lint/README.md
@@ -103,10 +103,15 @@
 
 As noted above, this baseline file contains warnings too, which might be undesirable. For example,
 CI tools might surface these warnings in code reviews. In order to create this file without
-warnings, we need to pass another flag to lint: `--nowarn`. The easiest way to do this is to
-locally change the soong code in
-[lint.go](http://cs/aosp-master/build/soong/java/lint.go;l=451;rcl=2e778d5bc4a8d1d77b4f4a3029a4a254ad57db75)
-adding `cmd.Flag("--nowarn")` and running lint again.
+warnings, we need to pass another flag to lint: `--nowarn`. One option is to add the flag to your
+Android.bp file and then run lint again:
+
+```
+  lint: {
+    extra_check_modules: ["AndroidFrameworkLintChecker"],
+    flags: ["--nowarn"],
+  }
+```
 
 # Documentation
 
diff --git a/tools/lint/common/src/main/java/com/google/android/lint/aidl/EnforcePermissionUtils.kt b/tools/lint/common/src/main/java/com/google/android/lint/aidl/EnforcePermissionUtils.kt
index d41fee3..24d203f 100644
--- a/tools/lint/common/src/main/java/com/google/android/lint/aidl/EnforcePermissionUtils.kt
+++ b/tools/lint/common/src/main/java/com/google/android/lint/aidl/EnforcePermissionUtils.kt
@@ -24,33 +24,31 @@
 import org.jetbrains.uast.UMethod
 
 /**
- * Given a UMethod, determine if this method is
- * the entrypoint to an interface generated by AIDL,
- * returning the interface name if so, otherwise returning null
+ * Given a UMethod, determine if this method is the entrypoint to an interface
+ * generated by AIDL, returning the interface name if so, otherwise returning
+ * null
  */
 fun getContainingAidlInterface(context: JavaContext, node: UMethod): String? {
-    if (!isContainedInSubclassOfStub(context, node)) return null
-    for (superMethod in node.findSuperMethods()) {
-        for (extendsInterface in superMethod.containingClass?.extendsList?.referenceElements
-            ?: continue) {
-            if (extendsInterface.qualifiedName == IINTERFACE_INTERFACE) {
-                return superMethod.containingClass?.name
-            }
-        }
+    val containingStub = containingStub(context, node) ?: return null
+    val superMethod = node.findSuperMethods(containingStub)
+    if (superMethod.isEmpty()) return null
+    return containingStub.containingClass?.name
+}
+
+/* Returns the containing Stub class if any. This is not sufficient to infer
+ * that the method itself extends an AIDL generated method. See
+ * getContainingAidlInterface for that purpose.
+ */
+fun containingStub(context: JavaContext, node: UMethod?): PsiClass? {
+    var superClass = node?.containingClass?.superClass
+    while (superClass != null) {
+        if (isStub(context, superClass)) return superClass
+        superClass = superClass.superClass
     }
     return null
 }
 
-fun isContainedInSubclassOfStub(context: JavaContext, node: UMethod?): Boolean {
-    var superClass = node?.containingClass?.superClass
-    while (superClass != null) {
-        if (isStub(context, superClass)) return true
-        superClass = superClass.superClass
-    }
-    return false
-}
-
-fun isStub(context: JavaContext, psiClass: PsiClass?): Boolean {
+private fun isStub(context: JavaContext, psiClass: PsiClass?): Boolean {
     if (psiClass == null) return false
     if (psiClass.name != "Stub") return false
     if (!context.evaluator.isStatic(psiClass)) return false
diff --git a/tools/lint/framework/checks/src/main/java/com/google/android/lint/AndroidFrameworkIssueRegistry.kt b/tools/lint/framework/checks/src/main/java/com/google/android/lint/AndroidFrameworkIssueRegistry.kt
index 935bade..624a198 100644
--- a/tools/lint/framework/checks/src/main/java/com/google/android/lint/AndroidFrameworkIssueRegistry.kt
+++ b/tools/lint/framework/checks/src/main/java/com/google/android/lint/AndroidFrameworkIssueRegistry.kt
@@ -20,6 +20,7 @@
 import com.android.tools.lint.client.api.Vendor
 import com.android.tools.lint.detector.api.CURRENT_API
 import com.google.android.lint.parcel.SaferParcelChecker
+import com.google.android.lint.aidl.PermissionAnnotationDetector
 import com.google.auto.service.AutoService
 
 @AutoService(IssueRegistry::class)
@@ -37,6 +38,7 @@
         SaferParcelChecker.ISSUE_UNSAFE_API_USAGE,
         // TODO: Currently crashes due to OOM issue
         // PackageVisibilityDetector.ISSUE_PACKAGE_NAME_NO_PACKAGE_VISIBILITY_FILTERS,
+        PermissionAnnotationDetector.ISSUE_MISSING_PERMISSION_ANNOTATION,
         PermissionMethodDetector.ISSUE_PERMISSION_METHOD_USAGE,
         PermissionMethodDetector.ISSUE_CAN_BE_PERMISSION_METHOD,
     )
diff --git a/tools/lint/framework/checks/src/main/java/com/google/android/lint/PermissionAnnotationDetector.kt b/tools/lint/framework/checks/src/main/java/com/google/android/lint/PermissionAnnotationDetector.kt
new file mode 100644
index 0000000..6b50cfd
--- /dev/null
+++ b/tools/lint/framework/checks/src/main/java/com/google/android/lint/PermissionAnnotationDetector.kt
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.android.lint.aidl
+
+import com.android.tools.lint.detector.api.Category
+import com.android.tools.lint.detector.api.Implementation
+import com.android.tools.lint.detector.api.Issue
+import com.android.tools.lint.detector.api.JavaContext
+import com.android.tools.lint.detector.api.Scope
+import com.android.tools.lint.detector.api.Severity
+import org.jetbrains.uast.UBlockExpression
+import org.jetbrains.uast.UMethod
+
+/**
+ * Ensures all AIDL-generated methods are annotated.
+ *
+ * This detector is run on system_server to validate that any method that may
+ * be exposed via an AIDL interface is permission-annotated. That is, it must
+ * have one of the following annotation:
+ *   - @EnforcePermission
+ *   - @RequiresNoPermission
+ *   - @PermissionManuallyEnforced
+ */
+class PermissionAnnotationDetector : AidlImplementationDetector() {
+
+    override fun visitAidlMethod(
+      context: JavaContext,
+      node: UMethod,
+      interfaceName: String,
+      body: UBlockExpression
+    ) {
+        if (context.evaluator.isAbstract(node)) return
+
+        if (AIDL_PERMISSION_ANNOTATIONS.any { node.hasAnnotation(it) }) return
+
+        context.report(
+            ISSUE_MISSING_PERMISSION_ANNOTATION,
+            node,
+            context.getLocation(node),
+            "The method ${node.name} is not permission-annotated."
+        )
+    }
+
+    companion object {
+
+        private val EXPLANATION_MISSING_PERMISSION_ANNOTATION = """
+          Interfaces that are exposed by system_server are required to have an annotation which
+          denotes the type of permission enforced. There are 3 possible options:
+            - @EnforcePermission
+            - @RequiresNoPermission
+            - @PermissionManuallyEnforced
+          See the documentation of each annotation for further details.
+
+          The annotation on the Java implementation must be the same that the AIDL interface
+          definition. This is verified by a lint in the build system.
+          """.trimIndent()
+
+        @JvmField
+        val ISSUE_MISSING_PERMISSION_ANNOTATION = Issue.create(
+            id = "MissingPermissionAnnotation",
+            briefDescription = "No permission annotation on exposed AIDL interface.",
+            explanation = EXPLANATION_MISSING_PERMISSION_ANNOTATION,
+            category = Category.CORRECTNESS,
+            priority = 5,
+            severity = Severity.ERROR,
+            implementation = Implementation(
+                PermissionAnnotationDetector::class.java,
+                Scope.JAVA_FILE_SCOPE
+            ),
+            enabledByDefault = false
+        )
+    }
+}
diff --git a/tools/lint/framework/checks/src/test/java/com/google/android/lint/PermissionAnnotationDetectorTest.kt b/tools/lint/framework/checks/src/test/java/com/google/android/lint/PermissionAnnotationDetectorTest.kt
new file mode 100644
index 0000000..bce848a
--- /dev/null
+++ b/tools/lint/framework/checks/src/test/java/com/google/android/lint/PermissionAnnotationDetectorTest.kt
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.android.lint.aidl
+
+import com.android.tools.lint.checks.infrastructure.LintDetectorTest
+import com.android.tools.lint.checks.infrastructure.TestFile
+import com.android.tools.lint.checks.infrastructure.TestLintTask
+import com.android.tools.lint.detector.api.Detector
+import com.android.tools.lint.detector.api.Issue
+
+@Suppress("UnstableApiUsage")
+class PermissionAnnotationDetectorTest : LintDetectorTest() {
+    override fun getDetector(): Detector = PermissionAnnotationDetector()
+
+    override fun getIssues(): List<Issue> = listOf(
+        PermissionAnnotationDetector.ISSUE_MISSING_PERMISSION_ANNOTATION,
+    )
+
+    override fun lint(): TestLintTask = super.lint().allowMissingSdk(true)
+
+    /** No issue scenario */
+
+    fun testDoesNotDetectIssuesInCorrectScenario() {
+        lint().files(
+            java(
+            """
+            public class Foo extends IFoo.Stub {
+                @Override
+                @android.annotation.EnforcePermission("android.Manifest.permission.READ_CONTACTS")
+                public void testMethod() { }
+            }
+            """
+            ).indented(),
+            *stubs
+        )
+            .run()
+            .expectClean()
+    }
+
+    fun testMissingAnnotation() {
+        lint().files(
+            java(
+            """
+            public class Bar extends IBar.Stub {
+                public void testMethod() { }
+            }
+            """
+            ).indented(),
+            *stubs
+        )
+            .run()
+            .expect(
+                """
+                src/Bar.java:2: Error: The method testMethod is not permission-annotated. [MissingPermissionAnnotation]
+                    public void testMethod() { }
+                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+                1 errors, 0 warnings
+                """
+            )
+    }
+
+    fun testNoIssueWhenExtendingWithAnotherSubclass() {
+        lint().files(
+            java(
+            """
+            public class Foo extends IFoo.Stub {
+                @Override
+                @android.annotation.EnforcePermission(android.Manifest.permission.READ_PHONE_STATE)
+                public void testMethod() { }
+                // not an AIDL method, just another method
+                public void someRandomMethod() { }
+            }
+            """).indented(),
+            java(
+            """
+            public class Baz extends Bar {
+              @Override
+              public void someRandomMethod() { }
+            }
+            """).indented(),
+            *stubs
+        )
+            .run()
+            .expectClean()
+    }
+
+    /* Stubs */
+
+    // A service with permission annotation on the method.
+    private val interfaceIFoo: TestFile = java(
+        """
+        public interface IFoo extends android.os.IInterface {
+         public static abstract class Stub extends android.os.Binder implements IFoo {
+          }
+          @Override
+          @android.annotation.EnforcePermission(android.Manifest.permission.READ_PHONE_STATE)
+          public void testMethod();
+          @Override
+          @android.annotation.RequiresNoPermission
+          public void testMethodNoPermission();
+          @Override
+          @android.annotation.PermissionManuallyEnforced
+          public void testMethodManual();
+        }
+        """
+    ).indented()
+
+    // A service with no permission annotation.
+    private val interfaceIBar: TestFile = java(
+        """
+        public interface IBar extends android.os.IInterface {
+         public static abstract class Stub extends android.os.Binder implements IBar {
+          }
+          public void testMethod();
+        }
+        """
+    ).indented()
+
+    private val stubs = arrayOf(interfaceIFoo, interfaceIBar)
+}
diff --git a/tools/lint/global/checks/src/main/java/com/google/android/lint/aidl/EnforcePermissionDetector.kt b/tools/lint/global/checks/src/main/java/com/google/android/lint/aidl/EnforcePermissionDetector.kt
index 83b8f16..4455a9c 100644
--- a/tools/lint/global/checks/src/main/java/com/google/android/lint/aidl/EnforcePermissionDetector.kt
+++ b/tools/lint/global/checks/src/main/java/com/google/android/lint/aidl/EnforcePermissionDetector.kt
@@ -168,7 +168,7 @@
             annotationInfo.origin == AnnotationOrigin.METHOD) {
             /* Ignore implementations that are not a sub-class of Stub (i.e., Proxy). */
             val uMethod = element as? UMethod ?: return
-            if (!isContainedInSubclassOfStub(context, uMethod)) {
+            if (getContainingAidlInterface(context, uMethod) == null) {
                 return
             }
             val overridingMethod = element.sourcePsi as PsiMethod
@@ -184,7 +184,8 @@
             if (context.evaluator.isAbstract(node)) return
             if (!node.hasAnnotation(ANNOTATION_ENFORCE_PERMISSION)) return
 
-            if (!isContainedInSubclassOfStub(context, node)) {
+            val stubClass = containingStub(context, node)
+            if (stubClass == null) {
                 context.report(
                     ISSUE_MISUSING_ENFORCE_PERMISSION,
                     node,
@@ -196,7 +197,7 @@
 
             /* Check that we are connected to the super class */
             val overridingMethod = node as PsiMethod
-            val parents = overridingMethod.findSuperMethods()
+            val parents = overridingMethod.findSuperMethods(stubClass)
             if (parents.isEmpty()) {
                 context.report(
                     ISSUE_MISUSING_ENFORCE_PERMISSION,
diff --git a/tools/lint/global/checks/src/test/java/com/google/android/lint/aidl/EnforcePermissionDetectorTest.kt b/tools/lint/global/checks/src/test/java/com/google/android/lint/aidl/EnforcePermissionDetectorTest.kt
index d8afcb9..2afca05 100644
--- a/tools/lint/global/checks/src/test/java/com/google/android/lint/aidl/EnforcePermissionDetectorTest.kt
+++ b/tools/lint/global/checks/src/test/java/com/google/android/lint/aidl/EnforcePermissionDetectorTest.kt
@@ -176,6 +176,29 @@
                 """.addLineContinuation())
     }
 
+    fun testDetectNoIssuesAnnotationOnNonStubMethod() {
+        lint().files(java(
+            """
+            package test.pkg;
+            public class TestClass43 extends IFooMethod.Stub {
+                public void aRegularMethodNotPartOfStub() {
+                }
+            }
+            """).indented(), java(
+            """
+            package test.pkg;
+            public class TestClass44 extends TestClass43 {
+              @Override
+              public void aRegularMethodNotPartOfStub() {
+              }
+            }
+            """).indented(),
+                *stubs
+        )
+        .run()
+        .expectClean()
+    }
+
     fun testDetectIssuesEmptyAnnotationOnMethod() {
         lint().files(java(
             """