diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index bee5011..975ec54 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -127,6 +127,7 @@
 import android.os.Handler;
 import android.os.HandlerExecutor;
 import android.os.IBinder;
+import android.os.IBinderCallback;
 import android.os.ICancellationSignal;
 import android.os.LocaleList;
 import android.os.Looper;
@@ -358,6 +359,15 @@
     /** Maps from activity token to the pending override configuration. */
     @GuardedBy("mPendingOverrideConfigs")
     private final ArrayMap<IBinder, Configuration> mPendingOverrideConfigs = new ArrayMap<>();
+
+    /**
+     * A queue of pending ApplicationInfo updates. In case when we get a concurrent update
+     * this queue allows us to only apply the latest object, and it can be applied on demand
+     * instead of waiting for the handler thread to reach the scheduled callback.
+     */
+    @GuardedBy("mResourcesManager")
+    private final ArrayMap<String, ApplicationInfo> mPendingAppInfoUpdates = new ArrayMap<>();
+
     /** The activities to be truly destroyed (not include relaunch). */
     final Map<IBinder, ClientTransactionItem> mActivitiesToBeDestroyed =
             Collections.synchronizedMap(new ArrayMap<IBinder, ClientTransactionItem>());
@@ -1259,9 +1269,19 @@
         }
 
         public void scheduleApplicationInfoChanged(ApplicationInfo ai) {
+            synchronized (mResourcesManager) {
+                var oldAi = mPendingAppInfoUpdates.put(ai.packageName, ai);
+                if (oldAi != null && oldAi.createTimestamp > ai.createTimestamp) {
+                    Slog.w(TAG, "Skipping application info changed for obsolete AI with TS "
+                            + ai.createTimestamp + " < already pending TS "
+                            + oldAi.createTimestamp);
+                    mPendingAppInfoUpdates.put(ai.packageName, oldAi);
+                    return;
+                }
+            }
             mResourcesManager.appendPendingAppInfoUpdate(new String[]{ai.sourceDir}, ai);
-            mH.removeMessages(H.APPLICATION_INFO_CHANGED, ai);
-            sendMessage(H.APPLICATION_INFO_CHANGED, ai);
+            mH.removeMessages(H.APPLICATION_INFO_CHANGED, ai.packageName);
+            sendMessage(H.APPLICATION_INFO_CHANGED, ai.packageName);
         }
 
         public void updateTimeZone() {
@@ -2436,7 +2456,7 @@
                     break;
                 }
                 case APPLICATION_INFO_CHANGED:
-                    handleApplicationInfoChanged((ApplicationInfo) msg.obj);
+                    applyPendingApplicationInfoChanges((String) msg.obj);
                     break;
                 case RUN_ISOLATED_ENTRY_POINT:
                     handleRunIsolatedEntryPoint((String) ((SomeArgs) msg.obj).arg1,
@@ -3918,7 +3938,8 @@
             mProfiler.startProfiling();
         }
 
-        // Make sure we are running with the most recent config.
+        // Make sure we are running with the most recent config and resource paths.
+        applyPendingApplicationInfoChanges(r.activityInfo.packageName);
         mConfigurationController.handleConfigurationChanged(null, null);
         updateDeviceIdForNonUIContexts(deviceId);
 
@@ -6244,6 +6265,17 @@
         r.mLastReportedWindowingMode = newWindowingMode;
     }
 
+    private void applyPendingApplicationInfoChanges(String packageName) {
+        final ApplicationInfo ai;
+        synchronized (mResourcesManager) {
+            ai = mPendingAppInfoUpdates.remove(packageName);
+        }
+        if (ai == null) {
+            return;
+        }
+        handleApplicationInfoChanged(ai);
+    }
+
     /**
      * Updates the application info.
      *
@@ -6269,6 +6301,16 @@
             apk = ref != null ? ref.get() : null;
             ref = mResourcePackages.get(ai.packageName);
             resApk = ref != null ? ref.get() : null;
+            for (ActivityClientRecord ar : mActivities.values()) {
+                if (ar.activityInfo.applicationInfo.packageName.equals(ai.packageName)) {
+                    ar.activityInfo.applicationInfo = ai;
+                    if (apk != null || resApk != null) {
+                        ar.packageInfo = apk != null ? apk : resApk;
+                    } else {
+                        apk = ar.packageInfo;
+                    }
+                }
+            }
         }
 
         if (apk != null) {
@@ -7051,6 +7093,18 @@
         } catch (RemoteException ex) {
             throw ex.rethrowFromSystemServer();
         }
+
+        // Set binder transaction callback after finishing bindApplication
+        Binder.setTransactionCallback(new IBinderCallback() {
+            @Override
+            public void onTransactionError(int pid, int code, int flags, int err) {
+                try {
+                    mgr.frozenBinderTransactionDetected(pid, code, flags, err);
+                } catch (RemoteException ex) {
+                    throw ex.rethrowFromSystemServer();
+                }
+            }
+        });
     }
 
     @UnsupportedAppUsage
diff --git a/core/java/android/app/ApplicationExitInfo.java b/core/java/android/app/ApplicationExitInfo.java
index d859f3f..24cb9ea 100644
--- a/core/java/android/app/ApplicationExitInfo.java
+++ b/core/java/android/app/ApplicationExitInfo.java
@@ -460,6 +460,33 @@
      */
     public static final int SUBREASON_SDK_SANDBOX_NOT_NEEDED = 28;
 
+    /**
+     * The process was killed because the binder proxy limit for system server was exceeded.
+     *
+     * For internal use only.
+     * @hide
+     */
+    public static final int SUBREASON_EXCESSIVE_BINDER_OBJECTS = 29;
+
+    /**
+     * The process was killed by the [kernel] Out-of-memory (OOM) killer; this
+     * would be set only when the reason is {@link #REASON_LOW_MEMORY}.
+     *
+     * For internal use only.
+     * @hide
+     */
+    public static final int SUBREASON_OOM_KILL = 30;
+
+    /**
+     * The process was killed because its async kernel binder buffer is running out
+     * while being frozen.
+     * this would be set only when the reason is {@link #REASON_FREEZER}.
+     *
+     * For internal use only.
+     * @hide
+     */
+    public static final int SUBREASON_FREEZER_BINDER_ASYNC_FULL = 31;
+
     // If there is any OEM code which involves additional app kill reasons, it should
     // be categorized in {@link #REASON_OTHER}, with subreason code starting from 1000.
 
@@ -635,6 +662,9 @@
         SUBREASON_KILL_BACKGROUND,
         SUBREASON_PACKAGE_UPDATE,
         SUBREASON_UNDELIVERED_BROADCAST,
+        SUBREASON_EXCESSIVE_BINDER_OBJECTS,
+        SUBREASON_OOM_KILL,
+        SUBREASON_FREEZER_BINDER_ASYNC_FULL,
     })
     @Retention(RetentionPolicy.SOURCE)
     public @interface SubReason {}
@@ -1360,6 +1390,12 @@
                 return "PACKAGE UPDATE";
             case SUBREASON_UNDELIVERED_BROADCAST:
                 return "UNDELIVERED BROADCAST";
+            case SUBREASON_EXCESSIVE_BINDER_OBJECTS:
+                return "EXCESSIVE BINDER OBJECTS";
+            case SUBREASON_OOM_KILL:
+                return "OOM KILL";
+            case SUBREASON_FREEZER_BINDER_ASYNC_FULL:
+                return "FREEZER BINDER ASYNC FULL";
             default:
                 return "UNKNOWN";
         }
diff --git a/core/java/android/app/IActivityManager.aidl b/core/java/android/app/IActivityManager.aidl
index 46260ea..37616e7 100644
--- a/core/java/android/app/IActivityManager.aidl
+++ b/core/java/android/app/IActivityManager.aidl
@@ -924,4 +924,14 @@
     void unregisterUidFrozenStateChangedCallback(in IUidFrozenStateChangedCallback callback);
     @JavaPassthrough(annotation="@android.annotation.RequiresPermission(android.Manifest.permission.PACKAGE_USAGE_STATS)")
     int[] getUidFrozenState(in int[] uids);
+
+    /**
+     * Notify AMS about binder transactions to frozen apps.
+     *
+     * @param debugPid The binder transaction sender
+     * @param code The binder transaction code
+     * @param flags The binder transaction flags
+     * @param err The binder transaction error
+     */
+    oneway void frozenBinderTransactionDetected(int debugPid, int code, int flags, int err);
 }
diff --git a/core/java/android/app/LoadedApk.java b/core/java/android/app/LoadedApk.java
index 0414f79..ccbccbf 100644
--- a/core/java/android/app/LoadedApk.java
+++ b/core/java/android/app/LoadedApk.java
@@ -342,7 +342,9 @@
      */
     public void updateApplicationInfo(@NonNull ApplicationInfo aInfo,
             @Nullable List<String> oldPaths) {
-        setApplicationInfo(aInfo);
+        if (!setApplicationInfo(aInfo)) {
+            return;
+        }
 
         final List<String> newPaths = new ArrayList<>();
         makePaths(mActivityThread, aInfo, newPaths);
@@ -387,7 +389,13 @@
         mAppComponentFactory = createAppFactory(aInfo, mDefaultClassLoader);
     }
 
-    private void setApplicationInfo(ApplicationInfo aInfo) {
+    private boolean setApplicationInfo(ApplicationInfo aInfo) {
+        if (mApplicationInfo != null && mApplicationInfo.createTimestamp > aInfo.createTimestamp) {
+            Slog.w(TAG, "New application info for package " + aInfo.packageName
+                    + " is out of date with TS " + aInfo.createTimestamp + " < the current TS "
+                    + mApplicationInfo.createTimestamp);
+            return false;
+        }
         final int myUid = Process.myUid();
         aInfo = adjustNativeLibraryPaths(aInfo);
         mApplicationInfo = aInfo;
@@ -410,6 +418,7 @@
         if (aInfo.requestsIsolatedSplitLoading() && !ArrayUtils.isEmpty(mSplitNames)) {
             mSplitLoader = new SplitDependencyLoaderImpl(aInfo.splitDependencies);
         }
+        return true;
     }
 
     void setSdkSandboxStorage(@Nullable String sdkSandboxClientAppVolumeUuid,
diff --git a/core/java/android/os/Binder.java b/core/java/android/os/Binder.java
index 218d4bb..3db1cb0 100644
--- a/core/java/android/os/Binder.java
+++ b/core/java/android/os/Binder.java
@@ -665,6 +665,32 @@
      */
     public static final native void blockUntilThreadAvailable();
 
+
+    /**
+     * TODO (b/308179628): Move this to libbinder for non-Java usages.
+     */
+    private static IBinderCallback sBinderCallback = null;
+
+    /**
+     * Set callback function for unexpected binder transaction errors.
+     *
+     * @hide
+     */
+    public static final void setTransactionCallback(IBinderCallback callback) {
+        sBinderCallback = callback;
+    }
+
+    /**
+     * Execute the callback function if it's already set.
+     *
+     * @hide
+     */
+    public static final void transactionCallback(int pid, int code, int flags, int err) {
+        if (sBinderCallback != null) {
+            sBinderCallback.onTransactionError(pid, code, flags, err);
+        }
+    }
+
     /**
      * Default constructor just initializes the object.
      *
diff --git a/core/java/android/os/IBinderCallback.java b/core/java/android/os/IBinderCallback.java
new file mode 100644
index 0000000..e4be5b0
--- /dev/null
+++ b/core/java/android/os/IBinderCallback.java
@@ -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.
+ */
+
+package android.os;
+
+/**
+ * Callback interface for binder transaction errors
+ *
+ * @hide
+ */
+public interface IBinderCallback {
+    /**
+     * Callback function for unexpected binder transaction errors.
+     *
+     * @param debugPid The binder transaction sender
+     * @param code The binder transaction code
+     * @param flags The binder transaction flags
+     * @param err The binder transaction error
+     */
+    void onTransactionError(int debugPid, int code, int flags, int err);
+}
diff --git a/core/java/android/window/TransitionInfo.java b/core/java/android/window/TransitionInfo.java
index d2a16a3..61f340a 100644
--- a/core/java/android/window/TransitionInfo.java
+++ b/core/java/android/window/TransitionInfo.java
@@ -29,6 +29,7 @@
 import static android.view.WindowManager.LayoutParams.ROTATION_ANIMATION_UNSPECIFIED;
 import static android.view.WindowManager.TRANSIT_CHANGE;
 import static android.view.WindowManager.TRANSIT_CLOSE;
+import static android.view.WindowManager.TRANSIT_FLAG_KEYGUARD_APPEARING;
 import static android.view.WindowManager.TRANSIT_FLAG_KEYGUARD_GOING_AWAY;
 import static android.view.WindowManager.TRANSIT_NONE;
 import static android.view.WindowManager.TRANSIT_OPEN;
@@ -361,6 +362,15 @@
     }
 
     /**
+     * Whether this transition contains any changes to the window hierarchy,
+     * including keyguard visibility.
+     */
+    public boolean hasChangesOrSideEffects() {
+        return !mChanges.isEmpty() || isKeyguardGoingAway()
+                || (mFlags & TRANSIT_FLAG_KEYGUARD_APPEARING) != 0;
+    }
+
+    /**
      * Whether this transition includes keyguard going away.
      */
     public boolean isKeyguardGoingAway() {
diff --git a/core/java/com/android/internal/content/FileSystemProvider.java b/core/java/com/android/internal/content/FileSystemProvider.java
index 58376a7..0801dd8 100644
--- a/core/java/com/android/internal/content/FileSystemProvider.java
+++ b/core/java/com/android/internal/content/FileSystemProvider.java
@@ -62,16 +62,14 @@
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.attribute.BasicFileAttributes;
+ import java.util.ArrayDeque;
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Deque;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Locale;
+import java.util.Queue;
 import java.util.Set;
 import java.util.concurrent.CopyOnWriteArrayList;
-import java.util.function.Predicate;
-import java.util.regex.Pattern;
 
 /**
  * A helper class for {@link android.provider.DocumentsProvider} to perform file operations on local
@@ -89,6 +87,8 @@
             DocumentsContract.QUERY_ARG_LAST_MODIFIED_AFTER,
             DocumentsContract.QUERY_ARG_MIME_TYPES);
 
+    private static final int MAX_RESULTS_NUMBER = 23;
+
     private static String joinNewline(String... args) {
         return TextUtils.join("\n", args);
     }
@@ -375,62 +375,53 @@
     }
 
     /**
-     * This method is similar to
-     * {@link DocumentsProvider#queryChildDocuments(String, String[], String)}. This method returns
-     * all children documents including hidden directories/files.
-     *
-     * <p>
-     * In a scoped storage world, access to "Android/data" style directories are hidden for privacy
-     * reasons. This method may show privacy sensitive data, so its usage should only be in
-     * restricted modes.
-     *
-     * @param parentDocumentId the directory to return children for.
-     * @param projection list of {@link Document} columns to put into the
-     *            cursor. If {@code null} all supported columns should be
-     *            included.
-     * @param sortOrder how to order the rows, formatted as an SQL
-     *            {@code ORDER BY} clause (excluding the ORDER BY itself).
-     *            Passing {@code null} will use the default sort order, which
-     *            may be unordered. This ordering is a hint that can be used to
-     *            prioritize how data is fetched from the network, but UI may
-     *            always enforce a specific ordering
-     * @throws FileNotFoundException when parent document doesn't exist or query fails
+     * WARNING: this method should really be {@code final}, but for the backward compatibility it's
+     * not; new classes that extend {@link FileSystemProvider} should override
+     * {@link #queryChildDocuments(String, String[], String, boolean)}, not this method.
      */
-    protected Cursor queryChildDocumentsShowAll(
-            String parentDocumentId, String[] projection, String sortOrder)
-            throws FileNotFoundException {
-        return queryChildDocuments(parentDocumentId, projection, sortOrder, File -> true);
-    }
-
     @Override
-    public Cursor queryChildDocuments(
-            String parentDocumentId, String[] projection, String sortOrder)
+    public Cursor queryChildDocuments(String documentId, String[] projection, String sortOrder)
             throws FileNotFoundException {
-        // Access to some directories is hidden for privacy reasons.
-        return queryChildDocuments(parentDocumentId, projection, sortOrder, this::shouldShow);
+        return queryChildDocuments(documentId, projection, sortOrder, /* includeHidden */ false);
     }
 
-    private Cursor queryChildDocuments(
-            String parentDocumentId, String[] projection, String sortOrder,
-            @NonNull Predicate<File> filter) throws FileNotFoundException {
-        final File parent = getFileForDocId(parentDocumentId);
-        final MatrixCursor result = new DirectoryCursor(
-                resolveProjection(projection), parentDocumentId, parent);
+    /**
+     * This method is similar to {@link #queryChildDocuments(String, String[], String)}, however, it
+     * could return <b>all</b> content of the directory, <b>including restricted (hidden)
+     * directories and files</b>.
+     * <p>
+     * In the scoped storage world, some directories and files (e.g. {@code Android/data/} and
+     * {@code Android/obb/} on the external storage) are hidden for privacy reasons.
+     * Hence, this method may reveal privacy-sensitive data, thus should be used with extra care.
+     */
+    @Override
+    public final Cursor queryChildDocumentsForManage(String documentId, String[] projection,
+            String sortOrder) throws FileNotFoundException {
+        return queryChildDocuments(documentId, projection, sortOrder, /* includeHidden */ true);
+    }
 
-        if (!filter.test(parent)) {
-            Log.w(TAG, "No permission to access parentDocumentId: " + parentDocumentId);
+    protected Cursor queryChildDocuments(String documentId, String[] projection, String sortOrder,
+            boolean includeHidden) throws FileNotFoundException {
+        final File parent = getFileForDocId(documentId);
+        final MatrixCursor result = new DirectoryCursor(
+                resolveProjection(projection), documentId, parent);
+
+        if (!parent.isDirectory()) {
+            Log.w(TAG, '"' + documentId + "\" is not a directory");
             return result;
         }
 
-        if (parent.isDirectory()) {
-            for (File file : FileUtils.listFilesOrEmpty(parent)) {
-                if (filter.test(file)) {
-                    includeFile(result, null, file);
-                }
-            }
-        } else {
-            Log.w(TAG, "parentDocumentId '" + parentDocumentId + "' is not Directory");
+        if (!includeHidden && shouldHideDocument(documentId)) {
+            Log.w(TAG, "Queried directory \"" + documentId + "\" is hidden");
+            return result;
         }
+
+        for (File file : FileUtils.listFilesOrEmpty(parent)) {
+            if (!includeHidden && shouldHideDocument(file)) continue;
+
+            includeFile(result, null, file);
+        }
+
         return result;
     }
 
@@ -452,23 +443,29 @@
      *
      * @see ContentResolver#EXTRA_HONORED_ARGS
      */
-    protected final Cursor querySearchDocuments(
-            File folder, String[] projection, Set<String> exclusion, Bundle queryArgs)
-            throws FileNotFoundException {
+    protected final Cursor querySearchDocuments(File folder, String[] projection,
+            Set<String> exclusion, Bundle queryArgs) throws FileNotFoundException {
         final MatrixCursor result = new MatrixCursor(resolveProjection(projection));
-        final List<File> pending = new ArrayList<>();
-        pending.add(folder);
-        while (!pending.isEmpty() && result.getCount() < 24) {
-            final File file = pending.remove(0);
-            if (shouldHide(file)) continue;
+
+        // We'll be a running a BFS here.
+        final Queue<File> pending = new ArrayDeque<>();
+        pending.offer(folder);
+
+        while (!pending.isEmpty() && result.getCount() < MAX_RESULTS_NUMBER) {
+            final File file = pending.poll();
+
+            // Skip hidden documents (both files and directories)
+            if (shouldHideDocument(file)) continue;
 
             if (file.isDirectory()) {
                 for (File child : FileUtils.listFilesOrEmpty(file)) {
-                    pending.add(child);
+                    pending.offer(child);
                 }
             }
-            if (!exclusion.contains(file.getAbsolutePath()) && matchSearchQueryArguments(file,
-                    queryArgs)) {
+
+            if (exclusion.contains(file.getAbsolutePath())) continue;
+
+            if (matchSearchQueryArguments(file, queryArgs)) {
                 includeFile(result, null, file);
             }
         }
@@ -612,26 +609,23 @@
 
         final int flagIndex = ArrayUtils.indexOf(columns, Document.COLUMN_FLAGS);
         if (flagIndex != -1) {
+            final boolean isDir = mimeType.equals(Document.MIME_TYPE_DIR);
             int flags = 0;
             if (file.canWrite()) {
-                if (mimeType.equals(Document.MIME_TYPE_DIR)) {
+                flags |= Document.FLAG_SUPPORTS_DELETE;
+                flags |= Document.FLAG_SUPPORTS_RENAME;
+                flags |= Document.FLAG_SUPPORTS_MOVE;
+                if (isDir) {
                     flags |= Document.FLAG_DIR_SUPPORTS_CREATE;
-                    flags |= Document.FLAG_SUPPORTS_DELETE;
-                    flags |= Document.FLAG_SUPPORTS_RENAME;
-                    flags |= Document.FLAG_SUPPORTS_MOVE;
-
-                    if (shouldBlockFromTree(docId)) {
-                        flags |= Document.FLAG_DIR_BLOCKS_OPEN_DOCUMENT_TREE;
-                    }
-
                 } else {
                     flags |= Document.FLAG_SUPPORTS_WRITE;
-                    flags |= Document.FLAG_SUPPORTS_DELETE;
-                    flags |= Document.FLAG_SUPPORTS_RENAME;
-                    flags |= Document.FLAG_SUPPORTS_MOVE;
                 }
             }
 
+            if (isDir && shouldBlockDirectoryFromTree(docId)) {
+                flags |= Document.FLAG_DIR_BLOCKS_OPEN_DOCUMENT_TREE;
+            }
+
             if (mimeType.startsWith("image/")) {
                 flags |= Document.FLAG_SUPPORTS_THUMBNAIL;
             }
@@ -664,22 +658,36 @@
         return row;
     }
 
-    private static final Pattern PATTERN_HIDDEN_PATH = Pattern.compile(
-            "(?i)^/storage/[^/]+/(?:[0-9]+/)?Android/(?:data|obb|sandbox)$");
+    /**
+     * Some providers may want to restrict access to certain directories and files,
+     * e.g. <i>"Android/data"</i> and <i>"Android/obb"</i> on the shared storage for
+     * privacy reasons.
+     * Such providers should override this method.
+     */
+    protected boolean shouldHideDocument(@NonNull String documentId)
+            throws FileNotFoundException {
+        return false;
+    }
 
     /**
-     * In a scoped storage world, access to "Android/data" style directories are
-     * hidden for privacy reasons.
+     * A variant of the {@link #shouldHideDocument(String)} that takes a {@link File} instead of
+     * a {@link String} {@code documentId}.
+     *
+     * @see #shouldHideDocument(String)
      */
-    protected boolean shouldHide(@NonNull File file) {
-        return (PATTERN_HIDDEN_PATH.matcher(file.getAbsolutePath()).matches());
+    protected final boolean shouldHideDocument(@NonNull File document)
+            throws FileNotFoundException {
+        return shouldHideDocument(getDocIdForFile(document));
     }
 
-    private boolean shouldShow(@NonNull File file) {
-        return !shouldHide(file);
-    }
-
-    protected boolean shouldBlockFromTree(@NonNull String docId) {
+    /**
+     * @return if the directory that should be blocked from being selected when the user launches
+     * an {@link Intent#ACTION_OPEN_DOCUMENT_TREE} intent.
+     *
+     * @see Document#FLAG_DIR_BLOCKS_OPEN_DOCUMENT_TREE
+     */
+    protected boolean shouldBlockDirectoryFromTree(@NonNull String documentId)
+            throws FileNotFoundException {
         return false;
     }
 
diff --git a/core/java/com/android/internal/os/BinderfsStatsReader.java b/core/java/com/android/internal/os/BinderfsStatsReader.java
new file mode 100644
index 0000000..9cc4a35
--- /dev/null
+++ b/core/java/com/android/internal/os/BinderfsStatsReader.java
@@ -0,0 +1,108 @@
+/*
+ * 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.internal.os;
+
+import com.android.internal.util.ProcFileReader;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.function.BiConsumer;
+import java.util.function.Consumer;
+import java.util.function.Predicate;
+
+/**
+ * Reads and parses {@code binder_logs/stats} file in the {@code binderfs} filesystem.
+ * Reuse procFileReader as the contents are generated by Linux kernel in the same way.
+ *
+ * A typical example of binderfs stats log
+ *
+ * binder stats:
+ * BC_TRANSACTION: 378004
+ * BC_REPLY: 268352
+ * BC_FREE_BUFFER: 665854
+ * ...
+ * proc 12645
+ * context binder
+ * threads: 12
+ * requested threads: 0+5/15
+ * ready threads 0
+ * free async space 520192
+ * ...
+ */
+public class BinderfsStatsReader {
+    private final String mPath;
+
+    public BinderfsStatsReader() {
+        mPath = "/dev/binderfs/binder_logs/stats";
+    }
+
+    public BinderfsStatsReader(String path) {
+        mPath = path;
+    }
+
+    /**
+     * Read binderfs stats and call the consumer(pid, free) function for each valid process
+     *
+     * @param predicate  Test if the pid is valid.
+     * @param biConsumer Callback function for each valid pid and its free async space
+     * @param consumer   The error function to deal with exceptions
+     */
+    public void handleFreeAsyncSpace(Predicate<Integer> predicate,
+            BiConsumer<Integer, Integer> biConsumer, Consumer<Exception> consumer) {
+        try (ProcFileReader mReader = new ProcFileReader(new FileInputStream(mPath))) {
+            while (mReader.hasMoreData()) {
+                // find the next process
+                if (!mReader.nextString().equals("proc")) {
+                    mReader.finishLine();
+                    continue;
+                }
+
+                // read pid
+                int pid = mReader.nextInt();
+                mReader.finishLine();
+
+                // check if we have interest in this process
+                if (!predicate.test(pid)) {
+                    continue;
+                }
+
+                // read free async space
+                mReader.finishLine(); // context binder
+                mReader.finishLine(); // threads:
+                mReader.finishLine(); // requested threads:
+                mReader.finishLine(); // ready threads
+                if (!mReader.nextString().equals("free")) {
+                    mReader.finishLine();
+                    continue;
+                }
+                if (!mReader.nextString().equals("async")) {
+                    mReader.finishLine();
+                    continue;
+                }
+                if (!mReader.nextString().equals("space")) {
+                    mReader.finishLine();
+                    continue;
+                }
+                int free = mReader.nextInt();
+                mReader.finishLine();
+                biConsumer.accept(pid, free);
+            }
+        } catch (IOException | NumberFormatException e) {
+            consumer.accept(e);
+        }
+    }
+}
diff --git a/core/jni/android_util_Binder.cpp b/core/jni/android_util_Binder.cpp
index bfd80a9e..d2d5186 100644
--- a/core/jni/android_util_Binder.cpp
+++ b/core/jni/android_util_Binder.cpp
@@ -73,6 +73,7 @@
     jclass mClass;
     jmethodID mExecTransact;
     jmethodID mGetInterfaceDescriptor;
+    jmethodID mTransactionCallback;
 
     // Object state.
     jfieldID mObject;
@@ -1173,6 +1174,8 @@
     gBinderOffsets.mExecTransact = GetMethodIDOrDie(env, clazz, "execTransact", "(IJJI)Z");
     gBinderOffsets.mGetInterfaceDescriptor = GetMethodIDOrDie(env, clazz, "getInterfaceDescriptor",
         "()Ljava/lang/String;");
+    gBinderOffsets.mTransactionCallback =
+            GetStaticMethodIDOrDie(env, clazz, "transactionCallback", "(IIII)V");
     gBinderOffsets.mObject = GetFieldIDOrDie(env, clazz, "mObject", "J");
 
     return RegisterMethodsOrDie(
@@ -1387,7 +1390,12 @@
 
     if (err == NO_ERROR) {
         return JNI_TRUE;
-    } else if (err == UNKNOWN_TRANSACTION) {
+    }
+
+    env->CallStaticVoidMethod(gBinderOffsets.mClass, gBinderOffsets.mTransactionCallback, getpid(),
+                              code, flags, err);
+
+    if (err == UNKNOWN_TRANSACTION) {
         return JNI_FALSE;
     }
 
diff --git a/core/jni/com_android_internal_os_Zygote.cpp b/core/jni/com_android_internal_os_Zygote.cpp
index 56066b2..b12e147 100644
--- a/core/jni/com_android_internal_os_Zygote.cpp
+++ b/core/jni/com_android_internal_os_Zygote.cpp
@@ -1121,10 +1121,8 @@
       }
     }
     // Fallback done
-
-    fail_fn(CREATE_ERROR("Unable to find %s:%lld in %s", package_name.data(),
-        ce_data_inode, parent_path.data()));
-    return nullptr;
+    ALOGW("Unable to find %s:%lld in %s", package_name.data(), ce_data_inode, parent_path.data());
+    return "";
   }
 }
 
@@ -1145,11 +1143,19 @@
                         true /*call_fail_fn*/);
 
   std::string ce_data_path = getAppDataDirName(mirrorCePath, package_name, ce_data_inode, fail_fn);
+  if (ce_data_path.empty()) {
+    ALOGE("Ignoring missing CE app data dir for %s\n", package_name.data());
+    return;
+  }
   if (!createAndMountAppData(package_name, ce_data_path, mirrorCePath, actualCePath, fail_fn,
                              false /*call_fail_fn*/)) {
     // CE might unlocks and the name is decrypted
     // get the name and mount again
     ce_data_path=getAppDataDirName(mirrorCePath, package_name, ce_data_inode, fail_fn);
+    if (ce_data_path.empty()) {
+      ALOGE("Ignoring missing CE app data dir for %s\n", package_name.data());
+      return;
+    }
     mountAppData(package_name, ce_data_path, mirrorCePath, actualCePath, fail_fn);
   }
 }
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 5ffa98c..3b2ce51 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -8283,6 +8283,10 @@
             android:exported="true">
         </provider>
 
+        <meta-data
+            android:name="com.android.server.patch.25239169"
+            android:value="true" />
+
     </application>
 
 </manifest>
diff --git a/core/tests/coretests/src/android/provider/DeviceConfigTest.java b/core/tests/coretests/src/android/provider/DeviceConfigTest.java
index 1ea20f1..a68833c9 100644
--- a/core/tests/coretests/src/android/provider/DeviceConfigTest.java
+++ b/core/tests/coretests/src/android/provider/DeviceConfigTest.java
@@ -67,6 +67,7 @@
         deleteViaContentProvider(NAMESPACE, KEY);
         deleteViaContentProvider(NAMESPACE, KEY2);
         deleteViaContentProvider(NAMESPACE, KEY3);
+        DeviceConfig.setSyncDisabledMode(DeviceConfig.SYNC_DISABLED_MODE_NONE);
     }
 
     @Test
diff --git a/core/tests/coretests/src/android/widget/HorizontalScrollViewFunctionalTest.java b/core/tests/coretests/src/android/widget/HorizontalScrollViewFunctionalTest.java
index 86f26e5..df212eb 100644
--- a/core/tests/coretests/src/android/widget/HorizontalScrollViewFunctionalTest.java
+++ b/core/tests/coretests/src/android/widget/HorizontalScrollViewFunctionalTest.java
@@ -17,7 +17,9 @@
 package android.widget;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
+import android.content.Context;
 import android.platform.test.annotations.Presubmit;
 import android.util.PollingCheck;
 
@@ -32,6 +34,9 @@
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
 @RunWith(AndroidJUnit4.class)
 @MediumTest
 @Presubmit
@@ -49,23 +54,43 @@
     }
 
     @Test
-    public void testScrollAfterFlingTop() {
-        mHorizontalScrollView.scrollTo(100, 0);
-        mHorizontalScrollView.fling(-10000);
-        PollingCheck.waitFor(() -> mHorizontalScrollView.mEdgeGlowLeft.getDistance() > 0);
-        PollingCheck.waitFor(() -> mHorizontalScrollView.mEdgeGlowLeft.getDistance() == 0f);
+    public void testScrollAfterFlingLeft() throws Throwable {
+        WatchedEdgeEffect edgeEffect = new WatchedEdgeEffect(mActivity);
+        mHorizontalScrollView.mEdgeGlowLeft = edgeEffect;
+        mActivityRule.runOnUiThread(() -> mHorizontalScrollView.scrollTo(100, 0));
+        mActivityRule.runOnUiThread(() -> mHorizontalScrollView.fling(-10000));
+        assertTrue(edgeEffect.onAbsorbLatch.await(1, TimeUnit.SECONDS));
+        mActivityRule.runOnUiThread(() -> {}); // let the absorb takes effect -- least one frame
+        PollingCheck.waitFor(() -> edgeEffect.getDistance() == 0f);
         assertEquals(0, mHorizontalScrollView.getScrollX());
     }
 
     @Test
-    public void testScrollAfterFlingBottom() {
+    public void testScrollAfterFlingRight() throws Throwable {
+        WatchedEdgeEffect edgeEffect = new WatchedEdgeEffect(mActivity);
+        mHorizontalScrollView.mEdgeGlowRight = edgeEffect;
         int childWidth = mHorizontalScrollView.getChildAt(0).getWidth();
         int maxScroll = childWidth - mHorizontalScrollView.getWidth();
-        mHorizontalScrollView.scrollTo(maxScroll - 100, 0);
-        mHorizontalScrollView.fling(10000);
-        PollingCheck.waitFor(() -> mHorizontalScrollView.mEdgeGlowRight.getDistance() > 0);
+        mActivityRule.runOnUiThread(() -> mHorizontalScrollView.scrollTo(maxScroll - 100, 0));
+        mActivityRule.runOnUiThread(() -> mHorizontalScrollView.fling(10000));
+        assertTrue(edgeEffect.onAbsorbLatch.await(1, TimeUnit.SECONDS));
+        mActivityRule.runOnUiThread(() -> {}); // let the absorb takes effect -- at least one frame
         PollingCheck.waitFor(() -> mHorizontalScrollView.mEdgeGlowRight.getDistance() == 0f);
         assertEquals(maxScroll, mHorizontalScrollView.getScrollX());
     }
+
+    static class WatchedEdgeEffect extends EdgeEffect {
+        public CountDownLatch onAbsorbLatch = new CountDownLatch(1);
+
+        WatchedEdgeEffect(Context context) {
+            super(context);
+        }
+
+        @Override
+        public void onAbsorb(int velocity) {
+            super.onAbsorb(velocity);
+            onAbsorbLatch.countDown();
+        }
+    }
 }
 
diff --git a/core/tests/coretests/src/com/android/internal/os/BinderfsStatsReaderTest.java b/core/tests/coretests/src/com/android/internal/os/BinderfsStatsReaderTest.java
new file mode 100644
index 0000000..5498083
--- /dev/null
+++ b/core/tests/coretests/src/com/android/internal/os/BinderfsStatsReaderTest.java
@@ -0,0 +1,192 @@
+/*
+ * 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.internal.os;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+
+import android.content.Context;
+import android.os.FileUtils;
+import android.util.IntArray;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.io.File;
+import java.nio.file.Files;
+
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public class BinderfsStatsReaderTest {
+    private static final String BINDER_LOGS_STATS_HEADER = """
+            binder stats:
+            BC_TRANSACTION: 695756
+            BC_REPLY: 547779
+            BC_FREE_BUFFER: 1283223
+            BR_FAILED_REPLY: 4
+            BR_FROZEN_REPLY: 3
+            BR_ONEWAY_SPAM_SUSPECT: 1
+            proc: active 313 total 377
+            thread: active 3077 total 5227
+            """;
+    private static final String BINDER_LOGS_STATS_PROC1 = """
+            proc 14505
+            context binder
+              threads: 4
+              requested threads: 0+2/15
+              ready threads 0
+              free async space 520192
+              nodes: 9
+              refs: 29 s 29 w 29
+              buffers: 0
+            """;
+    private static final String BINDER_LOGS_STATS_PROC2 = """
+            proc 14461
+            context binder
+              threads: 8
+              requested threads: 0+2/15
+              ready threads 0
+              free async space 62
+              nodes: 30
+              refs: 51 s 51 w 51
+              buffers: 0
+            """;
+    private static final String BINDER_LOGS_STATS_PROC3 = """
+            proc 542
+            context binder
+              threads: 2
+              requested threads: 0+0/15
+              ready threads 0
+              free async space 519896
+              nodes: 1
+              refs: 2 s 3 w 2
+              buffers: 1
+            """;
+    private static final String BINDER_LOGS_STATS_PROC4 = """
+            proc 540
+            context binder
+              threads: 1
+              requested threads: 0+0/0
+              ready threads 1
+              free async space 44
+              nodes: 4
+              refs: 1 s 1 w 1
+              buffers: 0
+            """;
+    private File mStatsDirectory;
+    private int mFreezerBinderAsyncThreshold;
+    private IntArray mValidPids; // The pool of valid pids
+    private IntArray mStatsPids; // The pids read from binderfs stats that are also valid
+    private IntArray mStatsFree; // The free async space of the above pids
+    private boolean mHasError;
+
+    @Before
+    public void setUp() {
+        Context context = InstrumentationRegistry.getContext();
+        mStatsDirectory = context.getDir("binder_logs", Context.MODE_PRIVATE);
+        mFreezerBinderAsyncThreshold = 1024;
+        mValidPids = IntArray.fromArray(new int[]{14505, 14461, 542, 540}, 4);
+        mStatsPids = new IntArray();
+        mStatsFree = new IntArray();
+        mHasError = false;
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        FileUtils.deleteContents(mStatsDirectory);
+    }
+
+    @Test
+    public void testNoneProc() throws Exception {
+        runHandleBlockingFileLocks(BINDER_LOGS_STATS_HEADER);
+        assertFalse(mHasError);
+        assertEquals(0, mStatsPids.size());
+        assertEquals(0, mStatsFree.size());
+    }
+
+    @Test
+    public void testOneProc() throws Exception {
+        runHandleBlockingFileLocks(BINDER_LOGS_STATS_HEADER + BINDER_LOGS_STATS_PROC1);
+        assertFalse(mHasError);
+        assertEquals(0, mStatsPids.size());
+        assertEquals(0, mStatsFree.size());
+    }
+
+    @Test
+    public void testTwoProc() throws Exception {
+        runHandleBlockingFileLocks(BINDER_LOGS_STATS_HEADER + BINDER_LOGS_STATS_PROC1
+                + BINDER_LOGS_STATS_PROC2);
+        assertFalse(mHasError);
+        assertArrayEquals(mStatsPids.toArray(), new int[]{14461});
+        assertArrayEquals(mStatsFree.toArray(), new int[]{62});
+    }
+
+    @Test
+    public void testThreeProc() throws Exception {
+        runHandleBlockingFileLocks(BINDER_LOGS_STATS_HEADER + BINDER_LOGS_STATS_PROC1
+                + BINDER_LOGS_STATS_PROC2 + BINDER_LOGS_STATS_PROC3);
+        assertFalse(mHasError);
+        assertArrayEquals(mStatsPids.toArray(), new int[]{14461});
+        assertArrayEquals(mStatsFree.toArray(), new int[]{62});
+    }
+
+    @Test
+    public void testFourProc() throws Exception {
+        runHandleBlockingFileLocks(BINDER_LOGS_STATS_HEADER + BINDER_LOGS_STATS_PROC1
+                + BINDER_LOGS_STATS_PROC2 + BINDER_LOGS_STATS_PROC3 + BINDER_LOGS_STATS_PROC4);
+        assertFalse(mHasError);
+        assertArrayEquals(mStatsPids.toArray(), new int[]{14461, 540});
+        assertArrayEquals(mStatsFree.toArray(), new int[]{62, 44});
+    }
+
+    @Test
+    public void testInvalidProc() throws Exception {
+        mValidPids = new IntArray();
+        runHandleBlockingFileLocks(BINDER_LOGS_STATS_HEADER + BINDER_LOGS_STATS_PROC1
+                + BINDER_LOGS_STATS_PROC2 + BINDER_LOGS_STATS_PROC3 + BINDER_LOGS_STATS_PROC4);
+        assertFalse(mHasError);
+        assertEquals(0, mStatsPids.size());
+        assertEquals(0, mStatsFree.size());
+    }
+
+    private void runHandleBlockingFileLocks(String fileContents) throws Exception {
+        File tempFile = File.createTempFile("stats", null, mStatsDirectory);
+        Files.write(tempFile.toPath(), fileContents.getBytes());
+        new BinderfsStatsReader(tempFile.toString()).handleFreeAsyncSpace(
+                // Check if the current process is a valid one
+                pid -> mValidPids.indexOf(pid) != -1,
+
+                // Check if the current process is running out of async binder space
+                (pid, free) -> {
+                    if (free < mFreezerBinderAsyncThreshold) {
+                        mStatsPids.add(pid);
+                        mStatsFree.add(free);
+                    }
+                },
+
+                // Log the error if binderfs stats can't be accesses or correctly parsed
+                exception -> mHasError = true);
+        Files.delete(tempFile.toPath());
+    }
+}
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/StageCoordinator.java b/libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/StageCoordinator.java
index 3b1801b..1c79239 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/StageCoordinator.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/StageCoordinator.java
@@ -23,6 +23,7 @@
 import static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME;
 import static android.app.WindowConfiguration.ACTIVITY_TYPE_RECENTS;
 import static android.app.WindowConfiguration.WINDOWING_MODE_FULLSCREEN;
+import static android.content.Intent.FLAG_ACTIVITY_LAUNCH_ADJACENT;
 import static android.content.res.Configuration.SMALLEST_SCREEN_WIDTH_DP_UNDEFINED;
 import static android.view.Display.DEFAULT_DISPLAY;
 import static android.view.RemoteAnimationTarget.MODE_OPENING;
@@ -392,6 +393,13 @@
         return mMainStage.isActive();
     }
 
+    /** @return whether this transition-request has the launch-adjacent flag. */
+    public boolean requestHasLaunchAdjacentFlag(TransitionRequestInfo request) {
+        final ActivityManager.RunningTaskInfo triggerTask = request.getTriggerTask();
+        return triggerTask != null && triggerTask.baseIntent != null
+                && (triggerTask.baseIntent.getFlags() & FLAG_ACTIVITY_LAUNCH_ADJACENT) != 0;
+    }
+
     /** @return whether the transition-request implies entering pip from split. */
     public boolean requestImpliesSplitToPip(TransitionRequestInfo request) {
         if (!isSplitActive() || !mMixedHandler.requestHasPipEnter(request)) {
@@ -2236,6 +2244,25 @@
         return SPLIT_POSITION_UNDEFINED;
     }
 
+    /**
+     * Returns the {@link StageType} where {@param token} is being used
+     * {@link SplitScreen#STAGE_TYPE_UNDEFINED} otherwise
+     */
+    @StageType
+    public int getSplitItemStage(@Nullable WindowContainerToken token) {
+        if (token == null) {
+            return STAGE_TYPE_UNDEFINED;
+        }
+
+        if (mMainStage.containsToken(token)) {
+            return STAGE_TYPE_MAIN;
+        } else if (mSideStage.containsToken(token)) {
+            return STAGE_TYPE_SIDE;
+        }
+
+        return STAGE_TYPE_UNDEFINED;
+    }
+
     @Override
     public void setLayoutOffsetTarget(int offsetX, int offsetY, SplitLayout layout) {
         final StageTaskListener topLeftStage =
@@ -2434,10 +2461,20 @@
                         EXIT_REASON_SCREEN_LOCKED_SHOW_ON_TOP);
             }
 
-            // When split in the background, it should be only opening/dismissing transition and
-            // would keep out not empty. Prevent intercepting all transitions for split screen when
-            // it is in the background and not identify to handle it.
-            return (!out.isEmpty() || isSplitScreenVisible()) ? out : null;
+            if (!out.isEmpty()) {
+                // One of the cases above handled it
+                return out;
+            } else if (isSplitScreenVisible()) {
+                // If split is visible, only defer handling this transition if it's launching
+                // adjacent while there is already a split pair -- this may trigger PIP and
+                // that should be handled by the mixed handler.
+                final boolean deferTransition = requestHasLaunchAdjacentFlag(request)
+                    && mMainStage.getChildCount() != 0 && mSideStage.getChildCount() != 0;
+                return !deferTransition ? out : null;
+            }
+            // Don't intercept the transition if we are not handling it as a part of one of the
+            // cases above and it is not already visible
+            return null;
         } else {
             if (isOpening && getStageOfTask(triggerTask) != null) {
                 // One task is appearing into split, prepare to enter split screen.
@@ -2473,7 +2510,16 @@
                 mRecentTasks.ifPresent(
                         recentTasks -> recentTasks.removeSplitPair(triggerTask.taskId));
             }
-            prepareExitSplitScreen(STAGE_TYPE_UNDEFINED, outWCT);
+            @StageType int topStage = STAGE_TYPE_UNDEFINED;
+            if (isSplitScreenVisible()) {
+                // Get the stage where a child exists to keep that stage onTop
+                if (mMainStage.getChildCount() != 0 && mSideStage.getChildCount() == 0) {
+                    topStage = STAGE_TYPE_MAIN;
+                } else if (mSideStage.getChildCount() != 0 && mMainStage.getChildCount() == 0) {
+                    topStage = STAGE_TYPE_SIDE;
+                }
+            }
+            prepareExitSplitScreen(topStage, outWCT);
         }
     }
 
@@ -2890,7 +2936,11 @@
         return SPLIT_POSITION_UNDEFINED;
     }
 
-    /** Synchronize split-screen state with transition and make appropriate preparations. */
+    /**
+     * Synchronize split-screen state with transition and make appropriate preparations.
+     * @param toStage The stage that will not be dismissed. If set to
+     *        {@link SplitScreen#STAGE_TYPE_UNDEFINED} then both stages will be dismissed
+     */
     public void prepareDismissAnimation(@StageType int toStage, @ExitReason int dismissReason,
             @NonNull TransitionInfo info, @NonNull SurfaceControl.Transaction t,
             @NonNull SurfaceControl.Transaction finishT) {
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/transition/DefaultMixedHandler.java b/libs/WindowManager/Shell/src/com/android/wm/shell/transition/DefaultMixedHandler.java
index 4897c4e..f0bb665 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/transition/DefaultMixedHandler.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/transition/DefaultMixedHandler.java
@@ -50,6 +50,7 @@
 import com.android.wm.shell.pip.PipTransitionController;
 import com.android.wm.shell.protolog.ShellProtoLogGroup;
 import com.android.wm.shell.recents.RecentsTransitionHandler;
+import com.android.wm.shell.splitscreen.SplitScreen;
 import com.android.wm.shell.splitscreen.SplitScreenController;
 import com.android.wm.shell.splitscreen.StageCoordinator;
 import com.android.wm.shell.sysui.ShellInit;
@@ -511,8 +512,26 @@
             // make a new startTransaction because pip's startEnterAnimation "consumes" it so
             // we need a separate one to send over to launcher.
             SurfaceControl.Transaction otherStartT = new SurfaceControl.Transaction();
+            @SplitScreen.StageType int topStageToKeep = STAGE_TYPE_UNDEFINED;
+            if (mSplitHandler.isSplitScreenVisible()) {
+                // The non-going home case, we could be pip-ing one of the split stages and keep
+                // showing the other
+                for (int i = info.getChanges().size() - 1; i >= 0; --i) {
+                    TransitionInfo.Change change = info.getChanges().get(i);
+                    if (change == pipChange) {
+                        // Ignore the change/task that's going into Pip
+                        continue;
+                    }
+                    @SplitScreen.StageType int splitItemStage =
+                            mSplitHandler.getSplitItemStage(change.getLastParent());
+                    if (splitItemStage != STAGE_TYPE_UNDEFINED) {
+                        topStageToKeep = splitItemStage;
+                        break;
+                    }
+                }
+            }
             // Let split update internal state for dismiss.
-            mSplitHandler.prepareDismissAnimation(STAGE_TYPE_UNDEFINED,
+            mSplitHandler.prepareDismissAnimation(topStageToKeep,
                     EXIT_REASON_CHILD_TASK_ENTER_PIP, everythingElse, otherStartT,
                     finishTransaction);
 
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/transition/SleepHandler.java b/libs/WindowManager/Shell/src/com/android/wm/shell/transition/SleepHandler.java
index 87c438a..ba0ef20 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/transition/SleepHandler.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/transition/SleepHandler.java
@@ -19,13 +19,12 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.os.IBinder;
+import android.util.Slog;
 import android.view.SurfaceControl;
 import android.window.TransitionInfo;
 import android.window.TransitionRequestInfo;
 import android.window.WindowContainerTransaction;
 
-import java.util.ArrayList;
-
 /**
  * A Simple handler that tracks SLEEP transitions. We track them specially since we (ab)use these
  * as sentinels for fast-forwarding through animations when the screen is off.
@@ -34,30 +33,25 @@
  * don't register it like a normal handler.
  */
 class SleepHandler implements Transitions.TransitionHandler {
-    final ArrayList<IBinder> mSleepTransitions = new ArrayList<>();
-
     @Override
     public boolean startAnimation(@NonNull IBinder transition, @NonNull TransitionInfo info,
             @NonNull SurfaceControl.Transaction startTransaction,
             @NonNull SurfaceControl.Transaction finishTransaction,
             @NonNull Transitions.TransitionFinishCallback finishCallback) {
-        mSleepTransitions.remove(transition);
-        startTransaction.apply();
-        finishCallback.onTransitionFinished(null);
-        return true;
+        if (info.hasChangesOrSideEffects()) {
+            Slog.e(Transitions.TAG, "Real changes included in a SLEEP transition");
+            return false;
+        } else {
+            startTransaction.apply();
+            finishCallback.onTransitionFinished(null);
+            return true;
+        }
     }
 
     @Override
     @Nullable
     public WindowContainerTransaction handleRequest(@NonNull IBinder transition,
             @NonNull TransitionRequestInfo request) {
-        mSleepTransitions.add(transition);
         return new WindowContainerTransaction();
     }
-
-    @Override
-    public void onTransitionConsumed(@NonNull IBinder transition, boolean aborted,
-            @Nullable SurfaceControl.Transaction finishTransaction) {
-        mSleepTransitions.remove(transition);
-    }
 }
diff --git a/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/transition/ShellTransitionTests.java b/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/transition/ShellTransitionTests.java
index 99a1ac6..b32e0d6 100644
--- a/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/transition/ShellTransitionTests.java
+++ b/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/transition/ShellTransitionTests.java
@@ -1152,7 +1152,7 @@
     }
 
     @Test
-    public void testEmptyTransitionStillReportsKeyguardGoingAway() {
+    public void testEmptyTransition_withKeyguardGoingAway_plays() {
         Transitions transitions = createTestTransitions();
         transitions.replaceDefaultHandlerForTest(mDefaultHandler);
 
@@ -1171,6 +1171,65 @@
     }
 
     @Test
+    public void testSleepTransition_withKeyguardGoingAway_plays(){
+        Transitions transitions = createTestTransitions();
+        transitions.replaceDefaultHandlerForTest(mDefaultHandler);
+
+        IBinder transitToken = new Binder();
+        transitions.requestStartTransition(transitToken,
+                new TransitionRequestInfo(TRANSIT_SLEEP, null /* trigger */, null /* remote */));
+
+        // Make a no-op transition
+        TransitionInfo info = new TransitionInfoBuilder(
+                TRANSIT_SLEEP, TRANSIT_FLAG_KEYGUARD_GOING_AWAY, true /* noOp */).build();
+        transitions.onTransitionReady(transitToken, info, new StubTransaction(),
+                new StubTransaction());
+
+        // If keyguard-going-away flag set, then it shouldn't be aborted.
+        assertEquals(1, mDefaultHandler.activeCount());
+    }
+
+    @Test
+    public void testSleepTransition_withChanges_plays(){
+        Transitions transitions = createTestTransitions();
+        transitions.replaceDefaultHandlerForTest(mDefaultHandler);
+
+        IBinder transitToken = new Binder();
+        transitions.requestStartTransition(transitToken,
+                new TransitionRequestInfo(TRANSIT_SLEEP, null /* trigger */, null /* remote */));
+
+        // Make a transition with some changes
+        TransitionInfo info = new TransitionInfoBuilder(TRANSIT_SLEEP)
+                .addChange(TRANSIT_OPEN).build();
+        info.setTrack(0);
+        transitions.onTransitionReady(transitToken, info, new StubTransaction(),
+                new StubTransaction());
+
+        // If there is an actual change, then it shouldn't be aborted.
+        assertEquals(1, mDefaultHandler.activeCount());
+    }
+
+
+    @Test
+    public void testSleepTransition_empty_SyncBySleepHandler() {
+        Transitions transitions = createTestTransitions();
+        transitions.replaceDefaultHandlerForTest(mDefaultHandler);
+
+        IBinder transitToken = new Binder();
+        transitions.requestStartTransition(transitToken,
+                new TransitionRequestInfo(TRANSIT_SLEEP, null /* trigger */, null /* remote */));
+
+        // Make a no-op transition
+        TransitionInfo info = new TransitionInfoBuilder(
+                TRANSIT_SLEEP, 0x0, true /* noOp */).build();
+        transitions.onTransitionReady(transitToken, info, new StubTransaction(),
+                new StubTransaction());
+
+        // If there is nothing to actually play, it should not be offered to handlers.
+        assertEquals(0, mDefaultHandler.activeCount());
+    }
+
+    @Test
     public void testMultipleTracks() {
         Transitions transitions = createTestTransitions();
         transitions.replaceDefaultHandlerForTest(mDefaultHandler);
diff --git a/packages/ExternalStorageProvider/src/com/android/externalstorage/ExternalStorageProvider.java b/packages/ExternalStorageProvider/src/com/android/externalstorage/ExternalStorageProvider.java
index 4c313b2..3409c29 100644
--- a/packages/ExternalStorageProvider/src/com/android/externalstorage/ExternalStorageProvider.java
+++ b/packages/ExternalStorageProvider/src/com/android/externalstorage/ExternalStorageProvider.java
@@ -16,6 +16,8 @@
 
 package com.android.externalstorage;
 
+import static java.util.regex.Pattern.CASE_INSENSITIVE;
+
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.app.usage.StorageStatsManager;
@@ -64,7 +66,19 @@
 import java.util.Locale;
 import java.util.Objects;
 import java.util.UUID;
+import java.util.regex.Pattern;
 
+/**
+ * Presents content of the shared (a.k.a. "external") storage.
+ * <p>
+ * Starting with Android 11 (R), restricts access to the certain sections of the shared storage:
+ * {@code Android/data/}, {@code Android/obb/} and {@code Android/sandbox/}, that will be hidden in
+ * the DocumentsUI by default.
+ * See <a href="https://developer.android.com/about/versions/11/privacy/storage">
+ * Storage updates in Android 11</a>.
+ * <p>
+ * Documents ID format: {@code root:path/to/file}.
+ */
 public class ExternalStorageProvider extends FileSystemProvider {
     private static final String TAG = "ExternalStorage";
 
@@ -75,7 +89,12 @@
     private static final Uri BASE_URI =
             new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT).authority(AUTHORITY).build();
 
-    // docId format: root:path/to/file
+    /**
+     * Regex for detecting {@code /Android/data/}, {@code /Android/obb/} and
+     * {@code /Android/sandbox/} along with all their subdirectories and content.
+     */
+    private static final Pattern PATTERN_RESTRICTED_ANDROID_SUBTREES =
+            Pattern.compile("^Android/(?:data|obb|sandbox)(?:/.+)?", CASE_INSENSITIVE);
 
     private static final String[] DEFAULT_ROOT_PROJECTION = new String[] {
             Root.COLUMN_ROOT_ID, Root.COLUMN_FLAGS, Root.COLUMN_ICON, Root.COLUMN_TITLE,
@@ -278,76 +297,91 @@
         return projection != null ? projection : DEFAULT_ROOT_PROJECTION;
     }
 
+    /**
+     * Mark {@code Android/data/}, {@code Android/obb/} and {@code Android/sandbox/} on the
+     * integrated shared ("external") storage along with all their content and subdirectories as
+     * hidden.
+     */
     @Override
-    public Cursor queryChildDocumentsForManage(
-            String parentDocId, String[] projection, String sortOrder)
-            throws FileNotFoundException {
-        return queryChildDocumentsShowAll(parentDocId, projection, sortOrder);
+    protected boolean shouldHideDocument(@NonNull String documentId) {
+        // Don't need to hide anything on USB drives.
+        if (isOnRemovableUsbStorage(documentId)) {
+            return false;
+        }
+
+        final String path = getPathFromDocId(documentId);
+        return PATTERN_RESTRICTED_ANDROID_SUBTREES.matcher(path).matches();
     }
 
     /**
      * Check that the directory is the root of storage or blocked file from tree.
+     * <p>
+     * Note, that this is different from hidden documents: blocked documents <b>WILL</b> appear
+     * the UI, but the user <b>WILL NOT</b> be able to select them.
      *
-     * @param docId the docId of the directory to be checked
+     * @param documentId the docId of the directory to be checked
      * @return true, should be blocked from tree. Otherwise, false.
+     *
+     * @see Document#FLAG_DIR_BLOCKS_OPEN_DOCUMENT_TREE
      */
     @Override
-    protected boolean shouldBlockFromTree(@NonNull String docId) {
-        try {
-            final File dir = getFileForDocId(docId, false /* visible */);
-
-            // the file is null or it is not a directory
-            if (dir == null || !dir.isDirectory()) {
-                return false;
-            }
-
-            // Allow all directories on USB, including the root.
-            try {
-                RootInfo rootInfo = getRootFromDocId(docId);
-                if ((rootInfo.flags & Root.FLAG_REMOVABLE_USB) == Root.FLAG_REMOVABLE_USB) {
-                    return false;
-                }
-            } catch (FileNotFoundException e) {
-                Log.e(TAG, "Failed to determine rootInfo for docId");
-            }
-
-            final String path = getPathFromDocId(docId);
-
-            // Block the root of the storage
-            if (path.isEmpty()) {
-                return true;
-            }
-
-            // Block Download folder from tree
-            if (TextUtils.equals(Environment.DIRECTORY_DOWNLOADS.toLowerCase(Locale.ROOT),
-                    path.toLowerCase(Locale.ROOT))) {
-                return true;
-            }
-
-            // Block /Android
-            if (TextUtils.equals(Environment.DIRECTORY_ANDROID.toLowerCase(Locale.ROOT),
-                    path.toLowerCase(Locale.ROOT))) {
-                return true;
-            }
-
-            // Block /Android/data, /Android/obb, /Android/sandbox and sub dirs
-            if (shouldHide(dir)) {
-                return true;
-            }
-
+    protected boolean shouldBlockDirectoryFromTree(@NonNull String documentId)
+            throws FileNotFoundException {
+        final File dir = getFileForDocId(documentId, false);
+        // The file is null or it is not a directory
+        if (dir == null || !dir.isDirectory()) {
             return false;
-        } catch (IOException e) {
-            throw new IllegalArgumentException(
-                    "Failed to determine if " + docId + " should block from tree " + ": " + e);
         }
+
+        // Allow all directories on USB, including the root.
+        if (isOnRemovableUsbStorage(documentId)) {
+            return false;
+        }
+
+        // Get canonical(!) path. Note that this path will have neither leading nor training "/".
+        // This the root's path will be just an empty string.
+        final String path = getPathFromDocId(documentId);
+
+        // Block the root of the storage
+        if (path.isEmpty()) {
+            return true;
+        }
+
+        // Block /Download/ and /Android/ folders from the tree.
+        if (equalIgnoringCase(path, Environment.DIRECTORY_DOWNLOADS) ||
+                equalIgnoringCase(path, Environment.DIRECTORY_ANDROID)) {
+            return true;
+        }
+
+        // This shouldn't really make a difference, but just in case - let's block hidden
+        // directories as well.
+        if (shouldHideDocument(documentId)) {
+            return true;
+        }
+
+        return false;
     }
 
+    private boolean isOnRemovableUsbStorage(@NonNull String documentId) {
+        final RootInfo rootInfo;
+        try {
+            rootInfo = getRootFromDocId(documentId);
+        } catch (FileNotFoundException e) {
+            Log.e(TAG, "Failed to determine rootInfo for docId\"" + documentId + '"');
+            return false;
+        }
+
+        return (rootInfo.flags & Root.FLAG_REMOVABLE_USB) != 0;
+    }
+
+    @NonNull
     @Override
-    protected String getDocIdForFile(File file) throws FileNotFoundException {
+    protected String getDocIdForFile(@NonNull File file) throws FileNotFoundException {
         return getDocIdForFileMaybeCreate(file, false);
     }
 
-    private String getDocIdForFileMaybeCreate(File file, boolean createNewDir)
+    @NonNull
+    private String getDocIdForFileMaybeCreate(@NonNull File file, boolean createNewDir)
             throws FileNotFoundException {
         String path = file.getAbsolutePath();
 
@@ -417,31 +451,33 @@
     private File getFileForDocId(String docId, boolean visible, boolean mustExist)
             throws FileNotFoundException {
         RootInfo root = getRootFromDocId(docId);
-        return buildFile(root, docId, visible, mustExist);
+        return buildFile(root, docId, mustExist);
     }
 
-    private Pair<RootInfo, File> resolveDocId(String docId, boolean visible)
-            throws FileNotFoundException {
+    private Pair<RootInfo, File> resolveDocId(String docId) throws FileNotFoundException {
         RootInfo root = getRootFromDocId(docId);
-        return Pair.create(root, buildFile(root, docId, visible, true));
+        return Pair.create(root, buildFile(root, docId, /* mustExist */ true));
     }
 
     @VisibleForTesting
-    static String getPathFromDocId(String docId) throws IOException {
+    static String getPathFromDocId(String docId) {
         final int splitIndex = docId.indexOf(':', 1);
         final String docIdPath = docId.substring(splitIndex + 1);
-        // Get CanonicalPath and remove the first "/"
-        final String canonicalPath = new File(docIdPath).getCanonicalPath().substring(1);
 
-        if (canonicalPath.isEmpty()) {
-            return canonicalPath;
+        // Canonicalize path and strip the leading "/"
+        final String path;
+        try {
+            path = new File(docIdPath).getCanonicalPath().substring(1);
+        } catch (IOException e) {
+            Log.w(TAG, "Could not canonicalize \"" + docIdPath + '"');
+            return "";
         }
 
-        // remove trailing "/"
-        if (canonicalPath.charAt(canonicalPath.length() - 1) == '/') {
-            return canonicalPath.substring(0, canonicalPath.length() - 1);
+        // Remove the trailing "/" as well.
+        if (!path.isEmpty() && path.charAt(path.length() - 1) == '/') {
+            return path.substring(0, path.length() - 1);
         } else {
-            return canonicalPath;
+            return path;
         }
     }
 
@@ -460,7 +496,7 @@
         return root;
     }
 
-    private File buildFile(RootInfo root, String docId, boolean visible, boolean mustExist)
+    private File buildFile(RootInfo root, String docId, boolean mustExist)
             throws FileNotFoundException {
         final int splitIndex = docId.indexOf(':', 1);
         final String path = docId.substring(splitIndex + 1);
@@ -544,7 +580,7 @@
     @Override
     public Path findDocumentPath(@Nullable String parentDocId, String childDocId)
             throws FileNotFoundException {
-        final Pair<RootInfo, File> resolvedDocId = resolveDocId(childDocId, false);
+        final Pair<RootInfo, File> resolvedDocId = resolveDocId(childDocId);
         final RootInfo root = resolvedDocId.first;
         File child = resolvedDocId.second;
 
@@ -648,6 +684,13 @@
         }
     }
 
+    /**
+     * Print the state into the given stream.
+     * Gets invoked when you run:
+     * <pre>
+     * adb shell dumpsys activity provider com.android.externalstorage/.ExternalStorageProvider
+     * </pre>
+     */
     @Override
     public void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
         final IndentingPrintWriter pw = new IndentingPrintWriter(writer, "  ", 160);
@@ -731,4 +774,8 @@
         }
         return bundle;
     }
+
+    private static boolean equalIgnoringCase(@NonNull String a, @NonNull String b) {
+        return TextUtils.equals(a.toLowerCase(Locale.ROOT), b.toLowerCase(Locale.ROOT));
+    }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/biometrics/UdfpsController.java b/packages/SystemUI/src/com/android/systemui/biometrics/UdfpsController.java
index 3472a85..54a25a4 100644
--- a/packages/SystemUI/src/com/android/systemui/biometrics/UdfpsController.java
+++ b/packages/SystemUI/src/com/android/systemui/biometrics/UdfpsController.java
@@ -553,7 +553,9 @@
             Log.w(TAG, "ignoring onTouch with null overlay or animation view controller");
             return false;
         }
-        if (mOverlay.getAnimationViewController().shouldPauseAuth()) {
+        // Wait to receive up or cancel before pausing auth
+        if (mActivePointerId == MotionEvent.INVALID_POINTER_ID
+                && mOverlay.getAnimationViewController().shouldPauseAuth()) {
             Log.w(TAG, "ignoring onTouch with shouldPauseAuth = true");
             return false;
         }
@@ -562,12 +564,6 @@
                     + mOverlay.getRequestId());
             return false;
         }
-
-        if ((mLockscreenShadeTransitionController.getQSDragProgress() != 0f
-                && !mAlternateBouncerInteractor.isVisibleState())
-                || mPrimaryBouncerInteractor.isInTransit()) {
-            return false;
-        }
         if (event.getAction() == MotionEvent.ACTION_DOWN
                 || event.getAction() == MotionEvent.ACTION_HOVER_ENTER) {
             // Reset on ACTION_DOWN, start of new gesture
diff --git a/packages/SystemUI/src/com/android/systemui/navigationbar/gestural/BackPanelController.kt b/packages/SystemUI/src/com/android/systemui/navigationbar/gestural/BackPanelController.kt
index c4749e0..c77f3f4 100644
--- a/packages/SystemUI/src/com/android/systemui/navigationbar/gestural/BackPanelController.kt
+++ b/packages/SystemUI/src/com/android/systemui/navigationbar/gestural/BackPanelController.kt
@@ -231,7 +231,6 @@
             animation.removeEndListener(this)
 
             if (!canceled) {
-
                 // The delay between finishing this animation and starting the runnable
                 val delay = max(0, runnableDelay - elapsedTimeSinceEntry)
 
@@ -461,7 +460,6 @@
     }
 
     private fun handleMoveEvent(event: MotionEvent) {
-
         val x = event.x
         val y = event.y
 
@@ -927,17 +925,7 @@
             GestureState.ACTIVE -> {
                 previousXTranslationOnActiveOffset = previousXTranslation
                 updateRestingArrowDimens()
-                if (featureFlags.isEnabled(ONE_WAY_HAPTICS_API_MIGRATION)) {
-                    vibratorHelper.performHapticFeedback(
-                        mView,
-                        HapticFeedbackConstants.GESTURE_THRESHOLD_ACTIVATE
-                    )
-                } else {
-                    vibratorHelper.cancel()
-                    mainHandler.postDelayed(10L) {
-                        vibratorHelper.vibrate(VIBRATE_ACTIVATED_EFFECT)
-                    }
-                }
+                performActivatedHapticFeedback()
                 val popVelocity =
                     if (previousState == GestureState.INACTIVE) {
                         POP_ON_INACTIVE_TO_ACTIVE_VELOCITY
@@ -958,25 +946,24 @@
 
                 mView.popOffEdge(POP_ON_INACTIVE_VELOCITY)
 
-                if (featureFlags.isEnabled(ONE_WAY_HAPTICS_API_MIGRATION)) {
-                    vibratorHelper.performHapticFeedback(
-                        mView,
-                        HapticFeedbackConstants.GESTURE_THRESHOLD_DEACTIVATE
-                    )
-                } else {
-                    vibratorHelper.vibrate(VIBRATE_DEACTIVATED_EFFECT)
-                }
+                performDeactivatedHapticFeedback()
                 updateRestingArrowDimens()
             }
             GestureState.FLUNG -> {
+                // Typically a vibration is only played while transitioning to ACTIVE. However there
+                // are instances where a fling to trigger back occurs while not in that state.
+                // (e.g. A fling is detected before crossing the trigger threshold.)
+                if (previousState != GestureState.ACTIVE) {
+                    performActivatedHapticFeedback()
+                }
                 mainHandler.postDelayed(POP_ON_FLING_DELAY) {
                     mView.popScale(POP_ON_FLING_VELOCITY)
                 }
-                updateRestingArrowDimens()
                 mainHandler.postDelayed(
                     onEndSetCommittedStateListener.runnable,
                     MIN_DURATION_FLING_ANIMATION
                 )
+                updateRestingArrowDimens()
             }
             GestureState.COMMITTED -> {
                 // In most cases, animating between states is handled via `updateRestingArrowDimens`
@@ -1011,6 +998,31 @@
         }
     }
 
+    private fun performDeactivatedHapticFeedback() {
+        if (featureFlags.isEnabled(ONE_WAY_HAPTICS_API_MIGRATION)) {
+            vibratorHelper.performHapticFeedback(
+                    mView,
+                    HapticFeedbackConstants.GESTURE_THRESHOLD_DEACTIVATE
+            )
+        } else {
+            vibratorHelper.vibrate(VIBRATE_DEACTIVATED_EFFECT)
+        }
+    }
+
+    private fun performActivatedHapticFeedback() {
+        if (featureFlags.isEnabled(ONE_WAY_HAPTICS_API_MIGRATION)) {
+            vibratorHelper.performHapticFeedback(
+                    mView,
+                    HapticFeedbackConstants.GESTURE_THRESHOLD_ACTIVATE
+            )
+        } else {
+            vibratorHelper.cancel()
+            mainHandler.postDelayed(10L) {
+                vibratorHelper.vibrate(VIBRATE_ACTIVATED_EFFECT)
+            }
+        }
+    }
+
     private fun convertVelocityToAnimationFactor(
         valueOnFastVelocity: Float,
         valueOnSlowVelocity: Float,
diff --git a/packages/SystemUI/src/com/android/systemui/qs/PagedTileLayout.java b/packages/SystemUI/src/com/android/systemui/qs/PagedTileLayout.java
index ddd9463..9a5f43b 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/PagedTileLayout.java
+++ b/packages/SystemUI/src/com/android/systemui/qs/PagedTileLayout.java
@@ -554,6 +554,12 @@
         if (shouldNotRunAnimation(tilesToReveal)) {
             return;
         }
+        // This method has side effects (beings the fake drag, if it returns true). If we have
+        // decided that we want to do a tile reveal, we do a last check to verify that we can
+        // actually perform a fake drag.
+        if (!beginFakeDrag()) {
+            return;
+        }
 
         final int lastPageNumber = mPages.size() - 1;
         final TileLayout lastPage = mPages.get(lastPageNumber);
@@ -588,8 +594,10 @@
     }
 
     private boolean shouldNotRunAnimation(Set<String> tilesToReveal) {
+        // None of these have side effects. That way, we don't need to rely on short-circuiting
+        // behavior
         boolean noAnimationNeeded = tilesToReveal.isEmpty() || mPages.size() < 2;
-        boolean scrollingInProgress = getScrollX() != 0 || !beginFakeDrag();
+        boolean scrollingInProgress = getScrollX() != 0 || !isFakeDragging();
         // isRunningInTestHarness() to disable animation in functional testing as it caused
         // flakiness and is not needed there. Alternative solutions were more complex and would
         // still be either potentially flaky or modify internal data.
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/LightBarTransitionsController.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/LightBarTransitionsController.java
index ae70384..c207324 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/LightBarTransitionsController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/LightBarTransitionsController.java
@@ -25,6 +25,7 @@
 import android.util.TimeUtils;
 
 import com.android.app.animation.Interpolators;
+import com.android.internal.policy.GestureNavigationSettingsObserver;
 import com.android.systemui.Dumpable;
 import com.android.systemui.plugins.statusbar.StatusBarStateController;
 import com.android.systemui.shared.system.QuickStepContract;
@@ -95,6 +96,7 @@
     private final KeyguardStateController mKeyguardStateController;
     private final StatusBarStateController mStatusBarStateController;
     private final CommandQueue mCommandQueue;
+    private final GestureNavigationSettingsObserver mGestureNavigationSettingsObserver;
 
     private boolean mTransitionDeferring;
     private long mTransitionDeferringStartTime;
@@ -134,6 +136,8 @@
         mDozeAmount = mStatusBarStateController.getDozeAmount();
         mContext = context;
         mDisplayId = mContext.getDisplayId();
+        mGestureNavigationSettingsObserver = new GestureNavigationSettingsObserver(
+                mHandler, mContext, null);
     }
 
     /** Call to cleanup the LightBarTransitionsController when done with it. */
@@ -279,7 +283,8 @@
      */
     public boolean supportsIconTintForNavMode(int navigationMode) {
         // In gesture mode, we already do region sampling to update tint based on content beneath.
-        return !QuickStepContract.isGesturalMode(navigationMode);
+        return !QuickStepContract.isGesturalMode(navigationMode)
+                || mGestureNavigationSettingsObserver.areNavigationButtonForcedVisible();
     }
 
     /**
diff --git a/packages/SystemUI/tests/src/com/android/systemui/biometrics/UdfpsControllerTest.java b/packages/SystemUI/tests/src/com/android/systemui/biometrics/UdfpsControllerTest.java
index e7fc870..93a92fd 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/biometrics/UdfpsControllerTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/biometrics/UdfpsControllerTest.java
@@ -1396,7 +1396,7 @@
         // Configure UdfpsController to use FingerprintManager as opposed to AlternateTouchProvider.
         initUdfpsController(mOpticalProps, false /* hasAlternateTouchProvider */);
 
-        // Configure UdfpsView to not accept the ACTION_DOWN event
+        // Configure UdfpsView to accept the ACTION_DOWN event
         when(mUdfpsView.isDisplayConfigured()).thenReturn(true);
         when(mUdfpsView.isWithinSensorArea(anyFloat(), anyFloat())).thenReturn(true);
 
@@ -1427,6 +1427,66 @@
     }
 
     @Test
+    public void onTouch_withNewTouchDetection_ignoreAuthPauseIfFingerDown() throws RemoteException {
+        final NormalizedTouchData touchData = new NormalizedTouchData(0, 0f, 0f, 0f, 0f, 0f, 0L,
+                0L);
+        final TouchProcessorResult processorResultDown =
+                new TouchProcessorResult.ProcessedTouch(InteractionEvent.DOWN,
+                        0 /* pointerId */, touchData);
+        final TouchProcessorResult processorResultUp =
+                new TouchProcessorResult.ProcessedTouch(InteractionEvent.UP,
+                        -1 /* pointerId */, touchData);
+
+        // Enable new touch detection.
+        when(mFeatureFlags.isEnabled(Flags.UDFPS_NEW_TOUCH_DETECTION)).thenReturn(true);
+
+        // Configure UdfpsController to use FingerprintManager as opposed to AlternateTouchProvider.
+        initUdfpsController(mOpticalProps, false /* hasAlternateTouchProvider */);
+
+        // Configure UdfpsView to accept the ACTION_DOWN event
+        when(mUdfpsView.isDisplayConfigured()).thenReturn(true);
+        when(mUdfpsView.isWithinSensorArea(anyFloat(), anyFloat())).thenReturn(true);
+
+        // GIVEN that the overlay is showing and a11y touch exploration NOT enabled
+        when(mAccessibilityManager.isTouchExplorationEnabled()).thenReturn(false);
+        mOverlayController.showUdfpsOverlay(TEST_REQUEST_ID, mOpticalProps.sensorId,
+                BiometricOverlayConstants.REASON_AUTH_KEYGUARD, mUdfpsOverlayControllerCallback);
+        mFgExecutor.runAllReady();
+
+        verify(mUdfpsView).setOnTouchListener(mTouchListenerCaptor.capture());
+
+        // WHEN ACTION_DOWN is received and touch is within sensor
+        when(mSinglePointerTouchProcessor.processTouch(any(), anyInt(), any())).thenReturn(
+                processorResultDown);
+        MotionEvent event = MotionEvent.obtain(0, 0, ACTION_DOWN, 0, 0, 0);
+        mTouchListenerCaptor.getValue().onTouch(mUdfpsView, event);
+        mBiometricExecutor.runAllReady();
+
+        // THEN the down touch is received
+        verify(mInputManager).pilferPointers(any());
+        verify(mFingerprintManager).onPointerDown(anyLong(), anyInt(), anyInt(),
+                anyFloat(), anyFloat(), anyFloat(), anyFloat(), anyFloat(), anyLong(), anyLong(),
+                anyBoolean());
+
+        // GIVEN that auth is paused
+        when(mUdfpsAnimationViewController.shouldPauseAuth()).thenReturn(true);
+
+        // WHEN ACTION_UP is received and touch is within sensor
+        when(mSinglePointerTouchProcessor.processTouch(any(), anyInt(), any())).thenReturn(
+                processorResultUp);
+        event.setAction(ACTION_UP);
+        mTouchListenerCaptor.getValue().onTouch(mUdfpsView, event);
+        mBiometricExecutor.runAllReady();
+        event.recycle();
+
+        // THEN the UP is still received
+        verify(mInputManager).pilferPointers(any());
+        verify(mFingerprintManager).onPointerUp(anyLong(), anyInt(), anyInt(),
+                anyFloat(), anyFloat(), anyFloat(), anyFloat(), anyFloat(), anyLong(), anyLong(),
+                anyBoolean());
+    }
+
+    @Test
     public void onTouch_withNewTouchDetection_pilferPointer() throws RemoteException {
         final NormalizedTouchData touchData = new NormalizedTouchData(0, 0f, 0f, 0f, 0f, 0f, 0L,
                 0L);
@@ -1552,53 +1612,6 @@
     }
 
     @Test
-    public void onTouch_withNewTouchDetection_doNotProcessTouchWhenPullingUpBouncer()
-            throws RemoteException {
-        final NormalizedTouchData touchData = new NormalizedTouchData(0, 0f, 0f, 0f, 0f, 0f, 0L,
-                0L);
-        final TouchProcessorResult processorResultMove =
-                new TouchProcessorResult.ProcessedTouch(InteractionEvent.DOWN,
-                        1 /* pointerId */, touchData);
-
-        // Enable new touch detection.
-        when(mFeatureFlags.isEnabled(Flags.UDFPS_NEW_TOUCH_DETECTION)).thenReturn(true);
-
-        // Configure UdfpsController to use FingerprintManager as opposed to AlternateTouchProvider.
-        initUdfpsController(mOpticalProps, false /* hasAlternateTouchProvider */);
-
-        // Configure UdfpsView to accept the ACTION_MOVE event
-        when(mUdfpsView.isDisplayConfigured()).thenReturn(false);
-        when(mUdfpsView.isWithinSensorArea(anyFloat(), anyFloat())).thenReturn(true);
-
-        // GIVEN that the alternate bouncer is not showing and a11y touch exploration NOT enabled
-        when(mAccessibilityManager.isTouchExplorationEnabled()).thenReturn(false);
-        when(mAlternateBouncerInteractor.isVisibleState()).thenReturn(false);
-        mOverlayController.showUdfpsOverlay(TEST_REQUEST_ID, mOpticalProps.sensorId,
-                BiometricOverlayConstants.REASON_AUTH_KEYGUARD, mUdfpsOverlayControllerCallback);
-        mFgExecutor.runAllReady();
-
-        verify(mUdfpsView).setOnTouchListener(mTouchListenerCaptor.capture());
-
-        // GIVEN a swipe up to bring up primary bouncer is in progress or swipe down for QS
-        when(mPrimaryBouncerInteractor.isInTransit()).thenReturn(true);
-        when(mLockscreenShadeTransitionController.getFractionToShade()).thenReturn(1f);
-
-        // WHEN ACTION_MOVE is received and touch is within sensor
-        when(mSinglePointerTouchProcessor.processTouch(any(), anyInt(), any())).thenReturn(
-                processorResultMove);
-        MotionEvent moveEvent = MotionEvent.obtain(0, 0, ACTION_MOVE, 0, 0, 0);
-        mTouchListenerCaptor.getValue().onTouch(mUdfpsView, moveEvent);
-        mBiometricExecutor.runAllReady();
-        moveEvent.recycle();
-
-        // THEN the touch is NOT processed
-        verify(mFingerprintManager, never()).onPointerDown(anyLong(), anyInt(), anyInt(),
-                anyFloat(), anyFloat(), anyFloat(), anyFloat(), anyFloat(), anyLong(), anyLong(),
-                anyBoolean());
-    }
-
-
-    @Test
     public void onTouch_withNewTouchDetection_qsDrag_processesTouchWhenAlternateBouncerVisible()
             throws RemoteException {
         final NormalizedTouchData touchData = new NormalizedTouchData(0, 0f, 0f, 0f, 0f, 0f, 0L,
diff --git a/services/accessibility/java/com/android/server/accessibility/AccessibilityInputFilter.java b/services/accessibility/java/com/android/server/accessibility/AccessibilityInputFilter.java
index 8e7d277..2519f4e 100644
--- a/services/accessibility/java/com/android/server/accessibility/AccessibilityInputFilter.java
+++ b/services/accessibility/java/com/android/server/accessibility/AccessibilityInputFilter.java
@@ -388,11 +388,19 @@
     @Override
     public void onMotionEvent(MotionEvent transformedEvent, MotionEvent rawEvent,
             int policyFlags) {
+        if (!mInstalled) {
+            Slog.w(TAG, "onMotionEvent called before input filter installed!");
+            return;
+        }
         sendInputEvent(transformedEvent, policyFlags);
     }
 
     @Override
     public void onKeyEvent(KeyEvent event, int policyFlags) {
+        if (!mInstalled) {
+            Slog.w(TAG, "onKeyEvent called before input filter installed!");
+            return;
+        }
         sendInputEvent(event, policyFlags);
     }
 
diff --git a/services/autofill/java/com/android/server/autofill/RemoteFillService.java b/services/autofill/java/com/android/server/autofill/RemoteFillService.java
index 423b85f..4688658 100644
--- a/services/autofill/java/com/android/server/autofill/RemoteFillService.java
+++ b/services/autofill/java/com/android/server/autofill/RemoteFillService.java
@@ -56,7 +56,7 @@
     private static final long TIMEOUT_IDLE_BIND_MILLIS = 5 * DateUtils.SECOND_IN_MILLIS;
     private static final long TIMEOUT_REMOTE_REQUEST_MILLIS = 5 * DateUtils.SECOND_IN_MILLIS;
 
-    private FillServiceCallbacks mCallbacks;
+    private final FillServiceCallbacks mCallbacks;
     private final Object mLock = new Object();
     private CompletableFuture<FillResponse> mPendingFillRequest;
     private int mPendingFillRequestId = INVALID_REQUEST_ID;
@@ -128,12 +128,9 @@
      */
     public int cancelCurrentRequest() {
         synchronized (mLock) {
-            int canceledRequestId = mPendingFillRequest != null && mPendingFillRequest.cancel(false)
+            return mPendingFillRequest != null && mPendingFillRequest.cancel(false)
                     ? mPendingFillRequestId
                     : INVALID_REQUEST_ID;
-            mPendingFillRequest = null;
-            mPendingFillRequestId = INVALID_REQUEST_ID;
-            return canceledRequestId;
         }
     }
 
@@ -187,10 +184,6 @@
                 mPendingFillRequest = null;
                 mPendingFillRequestId = INVALID_REQUEST_ID;
             }
-            if (mCallbacks == null) {
-                Slog.w(TAG, "Error calling RemoteFillService - service already unbound");
-                return;
-            }
             if (err == null) {
                 mCallbacks.onFillRequestSuccess(request.getId(), res,
                         mComponentName.getPackageName(), request.getFlags());
@@ -227,10 +220,6 @@
             return save;
         }).orTimeout(TIMEOUT_REMOTE_REQUEST_MILLIS, TimeUnit.MILLISECONDS)
                 .whenComplete((res, err) -> Handler.getMain().post(() -> {
-                    if (mCallbacks == null) {
-                        Slog.w(TAG, "Error calling RemoteFillService - service already unbound");
-                        return;
-                    }
                     if (err == null) {
                         mCallbacks.onSaveRequestSuccess(mComponentName.getPackageName(), res);
                     } else {
@@ -245,8 +234,6 @@
     }
 
     public void destroy() {
-        cancelCurrentRequest();
         unbind();
-        mCallbacks = null;
     }
 }
diff --git a/services/companion/java/com/android/server/companion/CompanionDeviceManagerService.java b/services/companion/java/com/android/server/companion/CompanionDeviceManagerService.java
index 34c2548..bfa0428 100644
--- a/services/companion/java/com/android/server/companion/CompanionDeviceManagerService.java
+++ b/services/companion/java/com/android/server/companion/CompanionDeviceManagerService.java
@@ -705,8 +705,7 @@
         public PendingIntent requestNotificationAccess(ComponentName component, int userId)
                 throws RemoteException {
             String callingPackage = component.getPackageName();
-            checkCanCallNotificationApi(callingPackage);
-            // TODO: check userId.
+            checkCanCallNotificationApi(callingPackage, userId);
             if (component.flattenToString().length() > MAX_CN_LENGTH) {
                 throw new IllegalArgumentException("Component name is too long.");
             }
@@ -732,7 +731,7 @@
         @Deprecated
         @Override
         public boolean hasNotificationAccess(ComponentName component) throws RemoteException {
-            checkCanCallNotificationApi(component.getPackageName());
+            checkCanCallNotificationApi(component.getPackageName(), getCallingUserId());
             NotificationManager nm = getContext().getSystemService(NotificationManager.class);
             return nm.isNotificationListenerAccessGranted(component);
         }
@@ -946,8 +945,7 @@
             createNewAssociation(userId, packageName, macAddressObj, null, null, false);
         }
 
-        private void checkCanCallNotificationApi(String callingPackage) {
-            final int userId = getCallingUserId();
+        private void checkCanCallNotificationApi(String callingPackage, int userId) {
             enforceCallerIsSystemOr(userId, callingPackage);
 
             if (getCallingUid() == SYSTEM_UID) return;
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 3576d51..1b411d63 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -561,7 +561,7 @@
     static final int PROC_START_TIMEOUT = 10 * 1000 * Build.HW_TIMEOUT_MULTIPLIER;
 
     // How long we wait for a launched process to complete its app startup before we ANR.
-    static final int BIND_APPLICATION_TIMEOUT = 10 * 1000 * Build.HW_TIMEOUT_MULTIPLIER;
+    static final int BIND_APPLICATION_TIMEOUT = 20 * 1000 * Build.HW_TIMEOUT_MULTIPLIER;
 
     // How long we wait to kill an application zygote, after the last process using
     // it has gone away.
@@ -5406,7 +5406,20 @@
                 intent = new Intent(Intent.ACTION_MAIN);
             }
             try {
-                target.send(code, intent, resolvedType, allowlistToken, null,
+                if (allowlistToken != null) {
+                    final int callingUid = Binder.getCallingUid();
+                    final String packageName;
+                    final long token = Binder.clearCallingIdentity();
+                    try {
+                        packageName = AppGlobals.getPackageManager().getNameForUid(callingUid);
+                    } finally {
+                        Binder.restoreCallingIdentity(token);
+                    }
+                    Slog.wtf(TAG, "Send a non-null allowlistToken to a non-PI target."
+                            + " Calling package: " + packageName + "; intent: " + intent
+                            + "; options: " + options);
+                }
+                target.send(code, intent, resolvedType, null, null,
                         requiredPermission, options);
             } catch (RemoteException e) {
             }
@@ -20071,7 +20084,7 @@
         final long token = Binder.clearCallingIdentity();
 
         try {
-            return mOomAdjuster.mCachedAppOptimizer.isFreezerSupported();
+            return CachedAppOptimizer.isFreezerSupported();
         } finally {
             Binder.restoreCallingIdentity(token);
         }
@@ -20199,4 +20212,21 @@
             return index >= 0 && !mMediaProjectionTokenMap.valueAt(index).isEmpty();
         }
     }
+
+    /**
+     * Deal with binder transactions to frozen apps.
+     *
+     * @param debugPid The binder transaction sender
+     * @param code The binder transaction code
+     * @param flags The binder transaction flags
+     * @param err The binder transaction error
+     */
+    @Override
+    public void frozenBinderTransactionDetected(int debugPid, int code, int flags, int err) {
+        final ProcessRecord app;
+        synchronized (mPidsSelfLocked) {
+            app = mPidsSelfLocked.get(debugPid);
+        }
+        mOomAdjuster.mCachedAppOptimizer.binderError(debugPid, app, code, flags, err);
+    }
 }
diff --git a/services/core/java/com/android/server/am/AppWaitingForDebuggerDialog.java b/services/core/java/com/android/server/am/AppWaitingForDebuggerDialog.java
index 9b5f18c..710278d 100644
--- a/services/core/java/com/android/server/am/AppWaitingForDebuggerDialog.java
+++ b/services/core/java/com/android/server/am/AppWaitingForDebuggerDialog.java
@@ -16,6 +16,8 @@
 
 package com.android.server.am;
 
+import static android.view.WindowManager.LayoutParams.SYSTEM_FLAG_SHOW_FOR_ALL_USERS;
+
 import android.content.Context;
 import android.content.DialogInterface;
 import android.os.Handler;
@@ -54,6 +56,7 @@
         setButton(DialogInterface.BUTTON_POSITIVE, "Force Close", mHandler.obtainMessage(1, app));
         setTitle("Waiting For Debugger");
         WindowManager.LayoutParams attrs = getWindow().getAttributes();
+        attrs.privateFlags |= SYSTEM_FLAG_SHOW_FOR_ALL_USERS;
         attrs.setTitle("Waiting For Debugger: " + app.info.processName);
         getWindow().setAttributes(attrs);
     }
diff --git a/services/core/java/com/android/server/am/CachedAppOptimizer.java b/services/core/java/com/android/server/am/CachedAppOptimizer.java
index db93323..70ed916 100644
--- a/services/core/java/com/android/server/am/CachedAppOptimizer.java
+++ b/services/core/java/com/android/server/am/CachedAppOptimizer.java
@@ -52,6 +52,8 @@
 import android.app.ActivityManagerInternal.OomAdjReason;
 import android.app.ActivityThread;
 import android.app.ApplicationExitInfo;
+import android.app.ApplicationExitInfo.Reason;
+import android.app.ApplicationExitInfo.SubReason;
 import android.app.IApplicationThread;
 import android.database.ContentObserver;
 import android.net.Uri;
@@ -67,6 +69,7 @@
 import android.provider.DeviceConfig.Properties;
 import android.provider.Settings;
 import android.text.TextUtils;
+import android.util.ArraySet;
 import android.util.EventLog;
 import android.util.IntArray;
 import android.util.Pair;
@@ -75,6 +78,7 @@
 
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.os.BinderfsStatsReader;
 import com.android.internal.os.ProcLocksReader;
 import com.android.internal.util.FrameworkStatsLog;
 import com.android.server.ServiceThread;
@@ -131,6 +135,12 @@
             "freeze_binder_offset";
     @VisibleForTesting static final String KEY_FREEZER_BINDER_THRESHOLD =
             "freeze_binder_threshold";
+    @VisibleForTesting static final String KEY_FREEZER_BINDER_CALLBACK_ENABLED =
+            "freeze_binder_callback_enabled";
+    @VisibleForTesting static final String KEY_FREEZER_BINDER_CALLBACK_THROTTLE =
+            "freeze_binder_callback_throttle";
+    @VisibleForTesting static final String KEY_FREEZER_BINDER_ASYNC_THRESHOLD =
+            "freeze_binder_async_threshold";
 
     static final int UNFREEZE_REASON_NONE =
             FrameworkStatsLog.APP_FREEZE_CHANGED__UNFREEZE_REASON_V2__UFR_NONE;
@@ -269,6 +279,9 @@
     @VisibleForTesting static final long DEFAULT_FREEZER_BINDER_DIVISOR = 4;
     @VisibleForTesting static final int DEFAULT_FREEZER_BINDER_OFFSET = 500;
     @VisibleForTesting static final long DEFAULT_FREEZER_BINDER_THRESHOLD = 1_000;
+    @VisibleForTesting static final boolean DEFAULT_FREEZER_BINDER_CALLBACK_ENABLED = true;
+    @VisibleForTesting static final long DEFAULT_FREEZER_BINDER_CALLBACK_THROTTLE = 10_000L;
+    @VisibleForTesting static final int DEFAULT_FREEZER_BINDER_ASYNC_THRESHOLD = 1_024;
 
     @VisibleForTesting static final Uri CACHED_APP_FREEZER_ENABLED_URI = Settings.Global.getUriFor(
                 Settings.Global.CACHED_APPS_FREEZER_ENABLED);
@@ -311,6 +324,7 @@
     static final int COMPACT_NATIVE_MSG = 5;
     static final int UID_FROZEN_STATE_CHANGED_MSG = 6;
     static final int DEADLOCK_WATCHDOG_MSG = 7;
+    static final int BINDER_ERROR_MSG = 8;
 
     // When free swap falls below this percentage threshold any full (file + anon)
     // compactions will be downgraded to file only compactions to reduce pressure
@@ -407,7 +421,10 @@
                             } else if (KEY_FREEZER_BINDER_ENABLED.equals(name)
                                     || KEY_FREEZER_BINDER_DIVISOR.equals(name)
                                     || KEY_FREEZER_BINDER_THRESHOLD.equals(name)
-                                    || KEY_FREEZER_BINDER_OFFSET.equals(name)) {
+                                    || KEY_FREEZER_BINDER_OFFSET.equals(name)
+                                    || KEY_FREEZER_BINDER_CALLBACK_ENABLED.equals(name)
+                                    || KEY_FREEZER_BINDER_CALLBACK_THROTTLE.equals(name)
+                                    || KEY_FREEZER_BINDER_ASYNC_THRESHOLD.equals(name)) {
                                 updateFreezerBinderState();
                             }
                         }
@@ -479,7 +496,15 @@
     @VisibleForTesting volatile int mFreezerBinderOffset = DEFAULT_FREEZER_BINDER_OFFSET;
     @GuardedBy("mPhenotypeFlagLock")
     @VisibleForTesting volatile long mFreezerBinderThreshold = DEFAULT_FREEZER_BINDER_THRESHOLD;
-
+    @GuardedBy("mPhenotypeFlagLock")
+    @VisibleForTesting volatile boolean mFreezerBinderCallbackEnabled =
+            DEFAULT_FREEZER_BINDER_CALLBACK_ENABLED;
+    @GuardedBy("mPhenotypeFlagLock")
+    @VisibleForTesting volatile long mFreezerBinderCallbackThrottle =
+            DEFAULT_FREEZER_BINDER_CALLBACK_THROTTLE;
+    @GuardedBy("mPhenotypeFlagLock")
+    @VisibleForTesting volatile int mFreezerBinderAsyncThreshold =
+            DEFAULT_FREEZER_BINDER_ASYNC_THRESHOLD;
 
     // Handler on which compaction runs.
     @VisibleForTesting
@@ -487,6 +512,7 @@
     private Handler mFreezeHandler;
     @GuardedBy("mProcLock")
     private boolean mFreezerOverride = false;
+    private long mFreezerBinderCallbackLast = -1;
 
     @VisibleForTesting volatile long mFreezerDebounceTimeout = DEFAULT_FREEZER_DEBOUNCE_TIMEOUT;
     @VisibleForTesting volatile boolean mFreezerExemptInstPkg = DEFAULT_FREEZER_EXEMPT_INST_PKG;
@@ -789,6 +815,12 @@
             pw.println("  " + KEY_FREEZER_BINDER_THRESHOLD + "=" + mFreezerBinderThreshold);
             pw.println("  " + KEY_FREEZER_BINDER_DIVISOR + "=" + mFreezerBinderDivisor);
             pw.println("  " + KEY_FREEZER_BINDER_OFFSET + "=" + mFreezerBinderOffset);
+            pw.println("  " + KEY_FREEZER_BINDER_CALLBACK_ENABLED + "="
+                    + mFreezerBinderCallbackEnabled);
+            pw.println("  " + KEY_FREEZER_BINDER_CALLBACK_THROTTLE + "="
+                    + mFreezerBinderCallbackThrottle);
+            pw.println("  " + KEY_FREEZER_BINDER_ASYNC_THRESHOLD + "="
+                    + mFreezerBinderAsyncThreshold);
             synchronized (mProcLock) {
                 int size = mFrozenProcesses.size();
                 pw.println("  Apps frozen: " + size);
@@ -1308,10 +1340,22 @@
         mFreezerBinderThreshold = DeviceConfig.getLong(
                 DeviceConfig.NAMESPACE_ACTIVITY_MANAGER_NATIVE_BOOT,
                 KEY_FREEZER_BINDER_THRESHOLD, DEFAULT_FREEZER_BINDER_THRESHOLD);
+        mFreezerBinderCallbackEnabled = DeviceConfig.getBoolean(
+                DeviceConfig.NAMESPACE_ACTIVITY_MANAGER_NATIVE_BOOT,
+                KEY_FREEZER_BINDER_CALLBACK_ENABLED, DEFAULT_FREEZER_BINDER_CALLBACK_ENABLED);
+        mFreezerBinderCallbackThrottle = DeviceConfig.getLong(
+                DeviceConfig.NAMESPACE_ACTIVITY_MANAGER_NATIVE_BOOT,
+                KEY_FREEZER_BINDER_CALLBACK_THROTTLE, DEFAULT_FREEZER_BINDER_CALLBACK_THROTTLE);
+        mFreezerBinderAsyncThreshold = DeviceConfig.getInt(
+                DeviceConfig.NAMESPACE_ACTIVITY_MANAGER_NATIVE_BOOT,
+                KEY_FREEZER_BINDER_ASYNC_THRESHOLD, DEFAULT_FREEZER_BINDER_ASYNC_THRESHOLD);
         Slog.d(TAG_AM, "Freezer binder state set to enabled=" + mFreezerBinderEnabled
                 + ", divisor=" + mFreezerBinderDivisor
                 + ", offset=" + mFreezerBinderOffset
-                + ", threshold=" + mFreezerBinderThreshold);
+                + ", threshold=" + mFreezerBinderThreshold
+                + ", callback enabled=" + mFreezerBinderCallbackEnabled
+                + ", callback throttle=" + mFreezerBinderCallbackThrottle
+                + ", async threshold=" + mFreezerBinderAsyncThreshold);
     }
 
     private boolean parseProcStateThrottle(String procStateThrottleString) {
@@ -2174,6 +2218,21 @@
                         Slog.w(TAG_AM, "Unable to check file locks");
                     }
                 } break;
+                case BINDER_ERROR_MSG: {
+                    IntArray pids = new IntArray();
+                    // Copy the frozen pids to a local array to release mProcLock ASAP
+                    synchronized (mProcLock) {
+                        int size = mFrozenProcesses.size();
+                        for (int i = 0; i < size; i++) {
+                            pids.add(mFrozenProcesses.keyAt(i));
+                        }
+                    }
+
+                    // Check binder errors to frozen processes with a local freezer lock
+                    synchronized (mFreezerLock) {
+                        binderErrorLocked(pids);
+                    }
+                } break;
                 default:
                     return;
             }
@@ -2479,4 +2538,115 @@
                 return UNFREEZE_REASON_NONE;
         }
     }
+
+    /**
+     * Kill a frozen process with a specified reason
+     */
+    public void killProcess(int pid, String reason, @Reason int reasonCode,
+            @SubReason int subReason) {
+        mAm.mHandler.post(() -> {
+            synchronized (mAm) {
+                synchronized (mProcLock) {
+                    ProcessRecord proc = mFrozenProcesses.get(pid);
+                    // The process might have been killed or unfrozen by others
+                    if (proc != null && proc.getThread() != null && !proc.isKilledByAm()) {
+                        proc.killLocked(reason, reasonCode, subReason, true);
+                    }
+                }
+            }
+        });
+    }
+
+    /**
+     * Sending binder transactions to frozen apps most likely indicates there's a bug. Log it and
+     * kill the frozen apps if they 1) receive sync binder transactions while frozen, or 2) miss
+     * async binder transactions due to kernel binder buffer running out.
+     *
+     * @param debugPid The binder transaction sender
+     * @param app The ProcessRecord of the sender
+     * @param code The binder transaction code
+     * @param flags The binder transaction flags
+     * @param err The binder transaction error
+     */
+    public void binderError(int debugPid, ProcessRecord app, int code, int flags, int err) {
+        Slog.w(TAG_AM, "pid " + debugPid + " " + (app == null ? "null" : app.processName)
+                + " sent binder code " + code + " with flags " + flags
+                + " to frozen apps and got error " + err);
+
+        // Do nothing if the binder error callback is not enabled.
+        // That means the frozen apps in a wrong state will be killed when they are unfrozen later.
+        if (!mUseFreezer || !mFreezerBinderCallbackEnabled) {
+            return;
+        }
+
+        final long now = SystemClock.uptimeMillis();
+        if (now < mFreezerBinderCallbackLast + mFreezerBinderCallbackThrottle) {
+            Slog.d(TAG_AM, "Too many transaction errors, throttling freezer binder callback.");
+            return;
+        }
+        mFreezerBinderCallbackLast = now;
+
+        // Check all frozen processes in Freezer handler
+        mFreezeHandler.sendEmptyMessage(BINDER_ERROR_MSG);
+    }
+
+    private void binderErrorLocked(IntArray pids) {
+        // PIDs that run out of async binder buffer when being frozen
+        ArraySet<Integer> pidsAsync = (mFreezerBinderAsyncThreshold < 0) ? null : new ArraySet<>();
+
+        for (int i = 0; i < pids.size(); i++) {
+            int current = pids.get(i);
+            try {
+                int freezeInfo = getBinderFreezeInfo(current);
+
+                if ((freezeInfo & SYNC_RECEIVED_WHILE_FROZEN) != 0) {
+                    killProcess(current, "Sync transaction while frozen",
+                            ApplicationExitInfo.REASON_FREEZER,
+                            ApplicationExitInfo.SUBREASON_FREEZER_BINDER_TRANSACTION);
+
+                    // No need to check async transactions in this case
+                    continue;
+                }
+
+                if ((freezeInfo & ASYNC_RECEIVED_WHILE_FROZEN) != 0) {
+                    if (pidsAsync != null) {
+                        pidsAsync.add(current);
+                    }
+                    if (DEBUG_FREEZER) {
+                        Slog.w(TAG_AM, "pid " + current
+                                + " received async transactions while frozen");
+                    }
+                }
+            } catch (Exception e) {
+                // The process has died. No need to kill it again.
+                Slog.w(TAG_AM, "Unable to query binder frozen stats for pid " + current);
+            }
+        }
+
+        // TODO: when kernel binder driver supports, poll the binder status directly.
+        // Binderfs stats, like other debugfs files, is not a reliable interface. But it's the
+        // only true source for now. The following code checks all frozen PIDs. If any of them
+        // is running out of async binder buffer, kill it. Otherwise it will be killed at a
+        // later time when AMS unfreezes it, which causes race issues.
+        if (pidsAsync == null || pidsAsync.size() == 0) {
+            return;
+        }
+        new BinderfsStatsReader().handleFreeAsyncSpace(
+                // Check if the frozen process has pending async calls
+                pidsAsync::contains,
+
+                // Kill the current process if it's running out of async binder space
+                (current, free) -> {
+                    if (free < mFreezerBinderAsyncThreshold) {
+                        Slog.w(TAG_AM, "pid " + current
+                                + " has " + free + " free async space, killing");
+                        killProcess(current, "Async binder space running out while frozen",
+                                ApplicationExitInfo.REASON_FREEZER,
+                                ApplicationExitInfo.SUBREASON_FREEZER_BINDER_ASYNC_FULL);
+                    }
+                },
+
+                // Log the error if binderfs stats can't be accesses or correctly parsed
+                exception -> Slog.e(TAG_AM, "Unable to parse binderfs stats"));
+    }
 }
diff --git a/services/core/java/com/android/server/am/UserController.java b/services/core/java/com/android/server/am/UserController.java
index 96cca0d..2ca7b6e 100644
--- a/services/core/java/com/android/server/am/UserController.java
+++ b/services/core/java/com/android/server/am/UserController.java
@@ -1928,24 +1928,26 @@
         EventLog.writeEvent(EventLogTags.UC_SWITCH_USER, targetUserId);
         int currentUserId = getCurrentUserId();
         UserInfo targetUserInfo = getUserInfo(targetUserId);
-        if (targetUserId == currentUserId) {
-            Slogf.i(TAG, "user #" + targetUserId + " is already the current user");
-            return true;
-        }
-        if (targetUserInfo == null) {
-            Slogf.w(TAG, "No user info for user #" + targetUserId);
-            return false;
-        }
-        if (!targetUserInfo.supportsSwitchTo()) {
-            Slogf.w(TAG, "Cannot switch to User #" + targetUserId + ": not supported");
-            return false;
-        }
-        if (FactoryResetter.isFactoryResetting()) {
-            Slogf.w(TAG, "Cannot switch to User #" + targetUserId + ": factory reset in progress");
-            return false;
-        }
         boolean userSwitchUiEnabled;
         synchronized (mLock) {
+            if (targetUserId == currentUserId && mTargetUserId == UserHandle.USER_NULL) {
+                Slogf.i(TAG, "user #" + targetUserId + " is already the current user");
+                return true;
+            }
+            if (targetUserInfo == null) {
+                Slogf.w(TAG, "No user info for user #" + targetUserId);
+                return false;
+            }
+            if (!targetUserInfo.supportsSwitchTo()) {
+                Slogf.w(TAG, "Cannot switch to User #" + targetUserId + ": not supported");
+                return false;
+            }
+            if (FactoryResetter.isFactoryResetting()) {
+                Slogf.w(TAG, "Cannot switch to User #" + targetUserId
+                        + ": factory reset in progress");
+                return false;
+            }
+
             if (!mInitialized) {
                 Slogf.e(TAG, "Cannot switch to User #" + targetUserId
                         + ": UserController not ready yet");
diff --git a/services/core/java/com/android/server/display/DisplayManagerService.java b/services/core/java/com/android/server/display/DisplayManagerService.java
index 6466b44..bc7e156 100644
--- a/services/core/java/com/android/server/display/DisplayManagerService.java
+++ b/services/core/java/com/android/server/display/DisplayManagerService.java
@@ -2868,7 +2868,16 @@
 
     // Check if the target app is in cached mode
     private boolean isUidCached(int uid) {
-        if (mActivityManagerInternal == null) {
+        // Only query procState and importance for Android apps, which have UIDs starting
+        // from FIRST_APPLICATION_UID. .
+        //
+        // Other processes with UID < FIRST_APPLICATION_UID can also register to DMS for
+        // display events. E.g. Android Studio executes a screen sharing process to provide
+        // display mirroring functionality. That process inherits the UID of adb. Depending
+        // on adb mode, it can be shell (2000) or root (0). Those processes are not Android
+        // apps and not managed by AMS. Treat them as non-cached so never ignore or defer
+        // display events to them.
+        if (mActivityManagerInternal == null || uid < FIRST_APPLICATION_UID) {
             return false;
         }
         int procState = mActivityManagerInternal.getUidProcessState(uid);
diff --git a/services/core/java/com/android/server/location/LocationManagerService.java b/services/core/java/com/android/server/location/LocationManagerService.java
index 115421d..fe4b042 100644
--- a/services/core/java/com/android/server/location/LocationManagerService.java
+++ b/services/core/java/com/android/server/location/LocationManagerService.java
@@ -467,13 +467,14 @@
                 // If we have a GNSS provider override, add the hardware provider as a standalone
                 // option for use by apps with the correct permission. Note the GNSS HAL can only
                 // support a single client, so mGnssManagerService.getGnssLocationProvider() can
-                // only be installed with a single provider.
+                // only be installed with a single provider. Locations from this provider won't
+                // be reported through the passive provider.
                 LocationProviderManager gnssHardwareManager =
                         new LocationProviderManager(
                                 mContext,
                                 mInjector,
                                 GPS_HARDWARE_PROVIDER,
-                                mPassiveManager,
+                                /*passiveManager=*/ null,
                                 Collections.singletonList(Manifest.permission.LOCATION_HARDWARE));
                 addLocationProviderManager(
                         gnssHardwareManager, mGnssManagerService.getGnssLocationProvider());
diff --git a/services/core/java/com/android/server/locksettings/LockSettingsService.java b/services/core/java/com/android/server/locksettings/LockSettingsService.java
index 8b3b8d3..fa95a34 100644
--- a/services/core/java/com/android/server/locksettings/LockSettingsService.java
+++ b/services/core/java/com/android/server/locksettings/LockSettingsService.java
@@ -348,7 +348,6 @@
                 mLockSettingsService.deleteRepairModePersistentDataIfNeeded();
             } else if (phase == PHASE_BOOT_COMPLETED) {
                 mLockSettingsService.loadEscrowData();
-                mLockSettingsService.deleteRepairModePersistentDataIfNeeded();
             }
         }
 
diff --git a/services/core/java/com/android/server/os/SchedulingPolicyService.java b/services/core/java/com/android/server/os/SchedulingPolicyService.java
index e53c436..ca149c5 100644
--- a/services/core/java/com/android/server/os/SchedulingPolicyService.java
+++ b/services/core/java/com/android/server/os/SchedulingPolicyService.java
@@ -219,6 +219,7 @@
         case Process.AUDIOSERVER_UID:  // fastcapture, fastmixer
         case Process.CAMERASERVER_UID: // camera high frame rate recording
         case Process.BLUETOOTH_UID:    // Bluetooth audio playback
+        case Process.PHONE_UID:        // phone call
             return true;
         default:
             return false;
diff --git a/services/core/java/com/android/server/pm/UserManagerService.java b/services/core/java/com/android/server/pm/UserManagerService.java
index 9c36baa..10c16f3 100644
--- a/services/core/java/com/android/server/pm/UserManagerService.java
+++ b/services/core/java/com/android/server/pm/UserManagerService.java
@@ -3706,7 +3706,8 @@
                     if (type == XmlPullParser.START_TAG) {
                         final String name = parser.getName();
                         if (name.equals(TAG_USER)) {
-                            UserData userData = readUserLP(parser.getAttributeInt(null, ATTR_ID));
+                            UserData userData = readUserLP(parser.getAttributeInt(null, ATTR_ID),
+                                    mUserVersion);
 
                             if (userData != null) {
                                 synchronized (mUsersLock) {
@@ -4387,7 +4388,7 @@
     }
 
     @GuardedBy({"mPackagesLock"})
-    private UserData readUserLP(int id) {
+    private UserData readUserLP(int id, int userVersion) {
         try (ResilientAtomicFile file = getUserFile(id)) {
             FileInputStream fis = null;
             try {
@@ -4396,19 +4397,19 @@
                     Slog.e(LOG_TAG, "User info not found, returning null, user id: " + id);
                     return null;
                 }
-                return readUserLP(id, fis);
+                return readUserLP(id, fis, userVersion);
             } catch (Exception e) {
                 // Remove corrupted file and retry.
                 Slog.e(LOG_TAG, "Error reading user info, user id: " + id);
                 file.failRead(fis, e);
-                return readUserLP(id);
+                return readUserLP(id, userVersion);
             }
         }
     }
 
     @GuardedBy({"mPackagesLock"})
     @VisibleForTesting
-    UserData readUserLP(int id, InputStream is) throws IOException,
+    UserData readUserLP(int id, InputStream is, int userVersion) throws IOException,
             XmlPullParserException {
         int flags = 0;
         String userType = null;
@@ -4501,7 +4502,17 @@
                 } else if (TAG_DEVICE_POLICY_RESTRICTIONS.equals(tag)) {
                     legacyLocalRestrictions = UserRestrictionsUtils.readRestrictions(parser);
                 } else if (TAG_DEVICE_POLICY_LOCAL_RESTRICTIONS.equals(tag)) {
-                    localRestrictions = UserRestrictionsUtils.readRestrictions(parser);
+                    if (userVersion < 10) {
+                        // Prior to version 10, the local user restrictions were stored as sub tags
+                        // grouped by the user id of the source user. The source is no longer stored
+                        // on versions 10+ as this is now stored in the DevicePolicyEngine.
+                        RestrictionsSet oldLocalRestrictions =
+                                RestrictionsSet.readRestrictions(
+                                    parser, TAG_DEVICE_POLICY_LOCAL_RESTRICTIONS);
+                        localRestrictions = oldLocalRestrictions.mergeAll();
+                    } else {
+                        localRestrictions = UserRestrictionsUtils.readRestrictions(parser);
+                    }
                 } else if (TAG_DEVICE_POLICY_GLOBAL_RESTRICTIONS.equals(tag)) {
                     globalRestrictions = UserRestrictionsUtils.readRestrictions(parser);
                 } else if (TAG_ACCOUNT.equals(tag)) {
diff --git a/services/core/java/com/android/server/wallpaper/WallpaperManagerService.java b/services/core/java/com/android/server/wallpaper/WallpaperManagerService.java
index 81c4dcd..634138c5 100644
--- a/services/core/java/com/android/server/wallpaper/WallpaperManagerService.java
+++ b/services/core/java/com/android/server/wallpaper/WallpaperManagerService.java
@@ -3951,7 +3951,9 @@
         if (wallpaper == null) {
             // common case, this is the first lookup post-boot of the system or
             // unified lock, so we bring up the saved state lazily now and recheck.
-            int whichLoad = (which == FLAG_LOCK) ? FLAG_LOCK : FLAG_SYSTEM;
+            // if we're loading the system wallpaper for the first time, also load the lock
+            // wallpaper to determine if the system wallpaper is system+lock or system only.
+            int whichLoad = (which == FLAG_LOCK) ? FLAG_LOCK : FLAG_SYSTEM | FLAG_LOCK;
             loadSettingsLocked(userId, false, whichLoad);
             wallpaper = whichSet.get(userId);
             if (wallpaper == null) {
diff --git a/services/core/java/com/android/server/wm/DisplayContent.java b/services/core/java/com/android/server/wm/DisplayContent.java
index 241ccbc..833c29a 100644
--- a/services/core/java/com/android/server/wm/DisplayContent.java
+++ b/services/core/java/com/android/server/wm/DisplayContent.java
@@ -1162,7 +1162,7 @@
         mUnknownAppVisibilityController = new UnknownAppVisibilityController(mWmService, this);
         mDisplaySwitchTransitionLauncher = new PhysicalDisplaySwitchTransitionLauncher(this,
                 mTransitionController);
-        mRemoteDisplayChangeController = new RemoteDisplayChangeController(mWmService, mDisplayId);
+        mRemoteDisplayChangeController = new RemoteDisplayChangeController(this);
 
         final InputChannel inputChannel = mWmService.mInputManager.monitorInput(
                 "PointerEventDispatcher" + mDisplayId, mDisplayId);
diff --git a/services/core/java/com/android/server/wm/RemoteDisplayChangeController.java b/services/core/java/com/android/server/wm/RemoteDisplayChangeController.java
index e646f14..267c7d4 100644
--- a/services/core/java/com/android/server/wm/RemoteDisplayChangeController.java
+++ b/services/core/java/com/android/server/wm/RemoteDisplayChangeController.java
@@ -26,6 +26,7 @@
 import android.window.DisplayAreaInfo;
 import android.window.WindowContainerTransaction;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.protolog.common.ProtoLog;
 
 import java.util.ArrayList;
@@ -44,16 +45,16 @@
     private static final int REMOTE_DISPLAY_CHANGE_TIMEOUT_MS = 800;
 
     private final WindowManagerService mService;
-    private final int mDisplayId;
+    private final DisplayContent mDisplayContent;
 
     private final Runnable mTimeoutRunnable = this::onContinueTimedOut;
 
     // all remote changes that haven't finished yet.
     private final List<ContinueRemoteDisplayChangeCallback> mCallbacks = new ArrayList<>();
 
-    public RemoteDisplayChangeController(WindowManagerService service, int displayId) {
-        mService = service;
-        mDisplayId = displayId;
+    RemoteDisplayChangeController(@NonNull DisplayContent displayContent) {
+        mService = displayContent.mWmService;
+        mDisplayContent = displayContent;
     }
 
     /**
@@ -99,8 +100,8 @@
         try {
             mService.mH.removeCallbacks(mTimeoutRunnable);
             mService.mH.postDelayed(mTimeoutRunnable, REMOTE_DISPLAY_CHANGE_TIMEOUT_MS);
-            mService.mDisplayChangeController.onDisplayChange(mDisplayId, fromRotation, toRotation,
-                    newDisplayAreaInfo, remoteCallback);
+            mService.mDisplayChangeController.onDisplayChange(mDisplayContent.mDisplayId,
+                    fromRotation, toRotation, newDisplayAreaInfo, remoteCallback);
             return true;
         } catch (RemoteException e) {
             Slog.e(TAG, "Exception while dispatching remote display-change", e);
@@ -123,10 +124,23 @@
                 }
                 callback.onContinueRemoteDisplayChange(null /* transaction */);
             }
+            onCompleted();
         }
     }
 
-    private void continueDisplayChange(@NonNull ContinueRemoteDisplayChangeCallback callback,
+    /** Called when all remote callbacks are done. */
+    private void onCompleted() {
+        // Because DisplayContent#sendNewConfiguration() will be skipped if there are pending remote
+        // changes, check again when all remote callbacks are done. E.g. callback X is done but
+        // there is a pending callback Y so its invocation is skipped, and when the callback Y is
+        // done, it doesn't call sendNewConfiguration().
+        if (mDisplayContent.mWaitingForConfig) {
+            mDisplayContent.sendNewConfiguration();
+        }
+    }
+
+    @VisibleForTesting
+    void continueDisplayChange(@NonNull ContinueRemoteDisplayChangeCallback callback,
             @Nullable WindowContainerTransaction transaction) {
         synchronized (mService.mGlobalLock) {
             int idx = mCallbacks.indexOf(callback);
@@ -139,11 +153,16 @@
                 // ordering by continuing everything up until this one with empty transactions.
                 mCallbacks.get(i).onContinueRemoteDisplayChange(null /* transaction */);
             }
+            // The "toIndex" is exclusive, so it needs +1 to clear the current calling callback.
             mCallbacks.subList(0, idx + 1).clear();
-            if (mCallbacks.isEmpty()) {
+            final boolean completed = mCallbacks.isEmpty();
+            if (completed) {
                 mService.mH.removeCallbacks(mTimeoutRunnable);
             }
             callback.onContinueRemoteDisplayChange(transaction);
+            if (completed) {
+                onCompleted();
+            }
         }
     }
 
diff --git a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
index 795f4fd..2c3f846 100644
--- a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
+++ b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
@@ -6509,7 +6509,7 @@
                          KeyChain.bindAsUser(mContext, userHandle)) {
                 IKeyChainService keyChain = keyChainConnection.getService();
                 return keyChain.setGrant(granteeUid, alias, hasGrant);
-            } catch (RemoteException e) {
+            } catch (RemoteException | AssertionError e) {
                 Slogf.e(LOG_TAG, "Setting grant for package.", e);
                 return false;
             }
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index 7dab342..9e2edd1 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -65,6 +65,7 @@
 import android.os.FactoryTest;
 import android.os.FileUtils;
 import android.os.IBinder;
+import android.os.IBinderCallback;
 import android.os.IIncidentManager;
 import android.os.Looper;
 import android.os.Message;
@@ -970,6 +971,14 @@
             }
         }
 
+        // Set binder transaction callback after starting system services
+        Binder.setTransactionCallback(new IBinderCallback() {
+            @Override
+            public void onTransactionError(int pid, int code, int flags, int err) {
+                mActivityManagerService.frozenBinderTransactionDetected(pid, code, flags, err);
+            }
+        });
+
         // Loop forever.
         Looper.loop();
         throw new RuntimeException("Main thread loop unexpectedly exited");
diff --git a/services/tests/servicestests/res/xml/user_100_v9.xml b/services/tests/servicestests/res/xml/user_100_v9.xml
new file mode 100644
index 0000000..03c08ed
--- /dev/null
+++ b/services/tests/servicestests/res/xml/user_100_v9.xml
@@ -0,0 +1,20 @@
+<user id="100"
+    serialNumber="0"
+    flags="3091"
+    type="android.os.usertype.full.SYSTEM"
+    created="0"
+    lastLoggedIn="0"
+    lastLoggedInFingerprint="0"
+    profileBadge="0">
+  <restrictions no_oem_unlock="true" />
+  <device_policy_local_restrictions>
+    <restrictions_user user_id="0">
+      <restrictions no_camera="true" />
+    </restrictions_user>
+    <restrictions_user user_id="100">
+      <restrictions no_camera="true" />
+      <restrictions no_install_unknown_sources="true" />
+    </restrictions_user>
+  </device_policy_local_restrictions>
+  <ignorePrepareStorageErrors>false</ignorePrepareStorageErrors>
+</user>
\ No newline at end of file
diff --git a/services/tests/servicestests/src/com/android/server/pm/UserManagerServiceUserInfoTest.java b/services/tests/servicestests/src/com/android/server/pm/UserManagerServiceUserInfoTest.java
index 9f75cf8..429c58e 100644
--- a/services/tests/servicestests/src/com/android/server/pm/UserManagerServiceUserInfoTest.java
+++ b/services/tests/servicestests/src/com/android/server/pm/UserManagerServiceUserInfoTest.java
@@ -43,27 +43,33 @@
 import android.app.PropertyInvalidatedCache;
 import android.content.pm.UserInfo;
 import android.content.pm.UserInfo.UserInfoFlag;
+import android.content.res.Resources;
 import android.os.Looper;
 import android.os.Parcel;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.platform.test.annotations.Presubmit;
 import android.text.TextUtils;
+import android.util.Xml;
 
 import androidx.test.InstrumentationRegistry;
 import androidx.test.filters.MediumTest;
 import androidx.test.runner.AndroidJUnit4;
 
+import com.android.frameworks.servicestests.R;
 import com.android.server.LocalServices;
 import com.android.server.pm.UserManagerService.UserData;
 
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlSerializer;
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.DataOutputStream;
+import java.nio.charset.StandardCharsets;
 import java.util.List;
 
 /**
@@ -76,6 +82,7 @@
 @MediumTest
 public class UserManagerServiceUserInfoTest {
     private UserManagerService mUserManagerService;
+    private Resources mResources;
 
     @Before
     public void setup() {
@@ -95,6 +102,8 @@
         assertEquals("Multiple users so this test can't run.", 1, users.size());
         assertEquals("Only user present isn't the system user.",
                 UserHandle.USER_SYSTEM, users.get(0).id);
+
+        mResources = InstrumentationRegistry.getTargetContext().getResources();
     }
 
     @Test
@@ -108,7 +117,7 @@
         byte[] bytes = baos.toByteArray();
 
         UserData read = mUserManagerService.readUserLP(
-                data.info.id, new ByteArrayInputStream(bytes));
+                data.info.id, new ByteArrayInputStream(bytes), 0);
 
         assertUserInfoEquals(data.info, read.info, /* parcelCopy= */ false);
     }
@@ -135,7 +144,11 @@
         // Clear the restrictions to see if they are properly read in from the user file.
         setUserRestrictions(data.info.id, globalRestriction, localRestriction, false);
 
-        mUserManagerService.readUserLP(data.info.id, new ByteArrayInputStream(bytes));
+        final int userVersion = 10;
+        //read the secondary and SYSTEM user file to fetch local/global device policy restrictions.
+        mUserManagerService.readUserLP(data.info.id, new ByteArrayInputStream(bytes),
+                userVersion);
+
         assertTrue(mUserManagerService.hasUserRestrictionOnAnyUser(globalRestriction));
         assertTrue(mUserManagerService.hasUserRestrictionOnAnyUser(localRestriction));
     }
@@ -286,6 +299,45 @@
         assertTrue(mUserManagerService.isUserOfType(106, USER_TYPE_FULL_DEMO));
     }
 
+    /** Tests readUserLP upgrading from version 9 to 10+. */
+    @Test
+    public void testUserRestrictionsUpgradeFromV9() throws Exception {
+        final String[] localRestrictions = new String[] {
+            UserManager.DISALLOW_CAMERA,
+            UserManager.DISALLOW_INSTALL_UNKNOWN_SOURCES,
+        };
+
+        final int userId = 100;
+        UserData data = new UserData();
+        data.info = createUser(userId, FLAG_FULL, "A type");
+
+        mUserManagerService.putUserInfo(data.info);
+
+        for (String restriction : localRestrictions) {
+            assertFalse(mUserManagerService.hasBaseUserRestriction(restriction, userId));
+            assertFalse(mUserManagerService.hasUserRestriction(restriction, userId));
+        }
+
+        // Convert the xml resource to the system storage xml format.
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        DataOutputStream os = new DataOutputStream(baos);
+        XmlPullParser in = mResources.getXml(R.xml.user_100_v9);
+        XmlSerializer out = Xml.newBinarySerializer();
+        out.setOutput(os, StandardCharsets.UTF_8.name());
+        Xml.copy(in, out);
+        byte[] userBytes = baos.toByteArray();
+        baos.reset();
+
+        final int userVersion = 9;
+        mUserManagerService.readUserLP(data.info.id, new ByteArrayInputStream(userBytes),
+                userVersion);
+
+        for (String restriction : localRestrictions) {
+            assertFalse(mUserManagerService.hasBaseUserRestriction(restriction, userId));
+            assertTrue(mUserManagerService.hasUserRestriction(restriction, userId));
+        }
+    }
+
     /** Creates a UserInfo with the given flags and userType. */
     private UserInfo createUser(@UserIdInt int userId, @UserInfoFlag int flags, String userType) {
         return new UserInfo(userId, "A Name", "A path", flags, userType);
diff --git a/services/tests/wmtests/src/com/android/server/wm/DisplayContentTests.java b/services/tests/wmtests/src/com/android/server/wm/DisplayContentTests.java
index 9b22efd..89fc65a 100644
--- a/services/tests/wmtests/src/com/android/server/wm/DisplayContentTests.java
+++ b/services/tests/wmtests/src/com/android/server/wm/DisplayContentTests.java
@@ -144,6 +144,7 @@
 import android.window.IDisplayAreaOrganizer;
 import android.window.ScreenCapture;
 import android.window.WindowContainerToken;
+import android.window.WindowContainerTransaction;
 
 import androidx.test.filters.SmallTest;
 
@@ -2013,6 +2014,53 @@
     }
 
     @Test
+    public void testRemoteDisplayChange() {
+        mWm.mDisplayChangeController = mock(IDisplayChangeWindowController.class);
+        final Boolean[] isWaitingForRemote = new Boolean[2];
+        final var callbacks = new RemoteDisplayChangeController.ContinueRemoteDisplayChangeCallback[
+                isWaitingForRemote.length];
+        for (int i = 0; i < isWaitingForRemote.length; i++) {
+            final int index = i;
+            var callback = new RemoteDisplayChangeController.ContinueRemoteDisplayChangeCallback() {
+                @Override
+                public void onContinueRemoteDisplayChange(WindowContainerTransaction transaction) {
+                    isWaitingForRemote[index] =
+                            mDisplayContent.mRemoteDisplayChangeController
+                                    .isWaitingForRemoteDisplayChange();
+                }
+            };
+            mDisplayContent.mRemoteDisplayChangeController.performRemoteDisplayChange(
+                    ROTATION_0, ROTATION_0, null /* newDisplayAreaInfo */, callback);
+            callbacks[i] = callback;
+        }
+
+        // The last callback is completed, all callbacks should be notified.
+        mDisplayContent.mRemoteDisplayChangeController.continueDisplayChange(callbacks[1],
+                null /* transaction */);
+        // When notifying 0, the callback 1 still exists.
+        assertTrue(isWaitingForRemote[0]);
+        assertFalse(isWaitingForRemote[1]);
+
+        // The first callback is completed, other callbacks after it should remain.
+        for (int i = 0; i < isWaitingForRemote.length; i++) {
+            isWaitingForRemote[i] = null;
+            mDisplayContent.mRemoteDisplayChangeController.performRemoteDisplayChange(
+                    ROTATION_0, ROTATION_0, null /* newDisplayAreaInfo */, callbacks[i]);
+        }
+        mDisplayContent.mRemoteDisplayChangeController.continueDisplayChange(callbacks[0],
+                null /* transaction */);
+        assertTrue(isWaitingForRemote[0]);
+        assertNull(isWaitingForRemote[1]);
+
+        // Complete the last callback. It should be able to consume pending config change.
+        mDisplayContent.mWaitingForConfig = true;
+        mDisplayContent.mRemoteDisplayChangeController.continueDisplayChange(callbacks[1],
+                null /* transaction */);
+        assertFalse(isWaitingForRemote[1]);
+        assertFalse(mDisplayContent.mWaitingForConfig);
+    }
+
+    @Test
     public void testShellTransitRotation() {
         DisplayContent dc = createNewDisplay();
         dc.setLastHasContent();
diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index bafa0d3..6004de0 100644
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -1049,6 +1049,14 @@
             "carrier_use_ims_first_for_emergency_bool";
 
     /**
+     * When {@code true}, this carrier will preferentially dial normal routed emergency calls over
+     * an in-service SIM if one is available.
+     * @hide
+     */
+    public static final String KEY_PREFER_IN_SERVICE_SIM_FOR_NORMAL_ROUTED_EMERGENCY_CALLS_BOOL =
+            "prefer_in_service_sim_for_normal_routed_emergency_calls_bool";
+
+    /**
      * When {@code true}, the determination of whether to place a call as an emergency call will be
      * based on the known {@link android.telephony.emergency.EmergencyNumber}s for the SIM on which
      * the call is being placed. In a dual SIM scenario, if Sim A has the emergency numbers
@@ -3133,6 +3141,15 @@
     public static final String KEY_ROAMING_OPERATOR_STRING_ARRAY = "roaming_operator_string_array";
 
     /**
+     * Config to show the roaming indicator (i.e. the "R" icon) from the status bar when roaming.
+     * The roaming indicator will be shown if this is {@code true} and will not be shown if this is
+     * {@code false}.
+     *
+     * @hide
+     */
+    public static final String KEY_SHOW_ROAMING_INDICATOR_BOOL = "show_roaming_indicator_bool";
+
+    /**
      * URL from which the proto containing the public key of the Carrier used for
      * IMSI encryption will be downloaded.
      * @hide
@@ -3298,11 +3315,11 @@
      * If {@code false} the SPN display checks if the current MCC/MNC is different from the
      * SIM card's MCC/MNC.
      *
-     * @see KEY_GSM_ROAMING_NETWORKS_STRING_ARRAY
-     * @see KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY
-     * @see KEY_NON_ROAMING_OPERATOR_STRING_ARRAY
-     * @see KEY_ROAMING_OPERATOR_STRING_ARRAY
-     * @see KEY_FORCE_HOME_NETWORK_BOOL
+     * @see #KEY_GSM_ROAMING_NETWORKS_STRING_ARRAY
+     * @see #KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY
+     * @see #KEY_NON_ROAMING_OPERATOR_STRING_ARRAY
+     * @see #KEY_ROAMING_OPERATOR_STRING_ARRAY
+     * @see #KEY_FORCE_HOME_NETWORK_BOOL
      *
      * @hide
      */
@@ -9858,6 +9875,8 @@
         sDefaults.putBoolean(KEY_CARRIER_IMS_GBA_REQUIRED_BOOL, false);
         sDefaults.putBoolean(KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL, false);
         sDefaults.putBoolean(KEY_CARRIER_USE_IMS_FIRST_FOR_EMERGENCY_BOOL, true);
+        sDefaults.putBoolean(KEY_PREFER_IN_SERVICE_SIM_FOR_NORMAL_ROUTED_EMERGENCY_CALLS_BOOL,
+                false);
         sDefaults.putBoolean(KEY_USE_ONLY_DIALED_SIM_ECC_LIST_BOOL, false);
         sDefaults.putString(KEY_CARRIER_NETWORK_SERVICE_WWAN_PACKAGE_OVERRIDE_STRING, "");
         sDefaults.putString(KEY_CARRIER_NETWORK_SERVICE_WLAN_PACKAGE_OVERRIDE_STRING, "");
@@ -10161,6 +10180,7 @@
                 false);
         sDefaults.putStringArray(KEY_NON_ROAMING_OPERATOR_STRING_ARRAY, null);
         sDefaults.putStringArray(KEY_ROAMING_OPERATOR_STRING_ARRAY, null);
+        sDefaults.putBoolean(KEY_SHOW_ROAMING_INDICATOR_BOOL, true);
         sDefaults.putBoolean(KEY_SHOW_IMS_REGISTRATION_STATUS_BOOL, false);
         sDefaults.putBoolean(KEY_RTT_SUPPORTED_BOOL, false);
         sDefaults.putBoolean(KEY_TTY_SUPPORTED_BOOL, true);