diff --git a/fs_mgr/libfstab/fstab.cpp b/fs_mgr/libfstab/fstab.cpp
index 01e0e3d..010fbc8 100644
--- a/fs_mgr/libfstab/fstab.cpp
+++ b/fs_mgr/libfstab/fstab.cpp
@@ -75,6 +75,7 @@
         {"slave", MS_SLAVE},
         {"shared", MS_SHARED},
         {"lazytime", MS_LAZYTIME},
+        {"nosymfollow", MS_NOSYMFOLLOW},
         {"defaults", 0},
 };
 
diff --git a/fs_mgr/libsnapshot/snapshot.cpp b/fs_mgr/libsnapshot/snapshot.cpp
index acabd67..ecf567e 100644
--- a/fs_mgr/libsnapshot/snapshot.cpp
+++ b/fs_mgr/libsnapshot/snapshot.cpp
@@ -2404,6 +2404,9 @@
                 PLOG(ERROR) << "Unable to write rollback indicator: " << path;
             } else {
                 LOG(INFO) << "Rollback detected, writing rollback indicator to " << path;
+                if (device_->IsTempMetadata()) {
+                    CleanupScratchOtaMetadataIfPresent();
+                }
             }
         }
         LOG(INFO) << "Not booting from new slot. Will not mount snapshots.";
diff --git a/fs_mgr/tests/fs_mgr_test.cpp b/fs_mgr/tests/fs_mgr_test.cpp
index 8004977..fc3d5dc 100644
--- a/fs_mgr/tests/fs_mgr_test.cpp
+++ b/fs_mgr/tests/fs_mgr_test.cpp
@@ -330,6 +330,7 @@
                 {"slave", MS_SLAVE},
                 {"shared", MS_SHARED},
                 {"lazytime", MS_LAZYTIME},
+                {"nosymfollow", MS_NOSYMFOLLOW},
                 {"defaults", 0},
                 {0, 0},
         };
diff --git a/gatekeeperd/fuzzer/GateKeeperServiceFuzzer.cpp b/gatekeeperd/fuzzer/GateKeeperServiceFuzzer.cpp
index bc0d5fe..a3cc3f3 100644
--- a/gatekeeperd/fuzzer/GateKeeperServiceFuzzer.cpp
+++ b/gatekeeperd/fuzzer/GateKeeperServiceFuzzer.cpp
@@ -22,6 +22,8 @@
 using android::GateKeeperProxy;
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+    // TODO(b/183141167): need to rewrite 'dump' to avoid SIGPIPE.
+    signal(SIGPIPE, SIG_IGN);
     auto gatekeeperService = new GateKeeperProxy();
     fuzzService(gatekeeperService, FuzzedDataProvider(data, size));
     return 0;
diff --git a/init/builtins.cpp b/init/builtins.cpp
index c4af5b5..38aed9c 100644
--- a/init/builtins.cpp
+++ b/init/builtins.cpp
@@ -471,6 +471,7 @@
     { "private",    MS_PRIVATE },
     { "slave",      MS_SLAVE },
     { "shared",     MS_SHARED },
+    { "nosymfollow", MS_NOSYMFOLLOW },
     { "defaults",   0 },
     { 0,            0 },
 };
diff --git a/init/libprefetch/prefetch/src/arch/android.rs b/init/libprefetch/prefetch/src/arch/android.rs
index c765e38..3404e42 100644
--- a/init/libprefetch/prefetch/src/arch/android.rs
+++ b/init/libprefetch/prefetch/src/arch/android.rs
@@ -11,8 +11,8 @@
 use rustutils::system_properties::error::PropertyWatcherError;
 use rustutils::system_properties::PropertyWatcher;
 
-const PREFETCH_RECORD_PROPERTY: &str = "ro.prefetch_boot.record";
-const PREFETCH_REPLAY_PROPERTY: &str = "ro.prefetch_boot.replay";
+const PREFETCH_RECORD_PROPERTY: &str = "prefetch_boot.record";
+const PREFETCH_REPLAY_PROPERTY: &str = "prefetch_boot.replay";
 const PREFETCH_RECORD_PROPERTY_STOP: &str = "ro.prefetch_boot.record_stop";
 
 fn wait_for_property_true(
diff --git a/libcutils/ashmem-dev.cpp b/libcutils/ashmem-dev.cpp
index 46b8ef2..cebfa5d 100644
--- a/libcutils/ashmem-dev.cpp
+++ b/libcutils/ashmem-dev.cpp
@@ -114,8 +114,14 @@
     // Check if kernel support exists, otherwise fall back to ashmem.
     // This code needs to build on old API levels, so we can't use the libc
     // wrapper.
+    //
+    // MFD_NOEXEC_SEAL is used to match the semantics of the ashmem device,
+    // which did not have executable permissions. This also seals the executable
+    // permissions of the buffer (i.e. they cannot be changed by fchmod()).
+    //
+    // MFD_NOEXEC_SEAL implies MFD_ALLOW_SEALING.
     android::base::unique_fd fd(
-            syscall(__NR_memfd_create, "test_android_memfd", MFD_CLOEXEC | MFD_ALLOW_SEALING));
+            syscall(__NR_memfd_create, "test_android_memfd", MFD_CLOEXEC | MFD_NOEXEC_SEAL));
     if (fd == -1) {
         ALOGE("memfd_create failed: %s, no memfd support.\n", strerror(errno));
         return false;
@@ -289,7 +295,13 @@
 static int memfd_create_region(const char* name, size_t size) {
     // This code needs to build on old API levels, so we can't use the libc
     // wrapper.
-    android::base::unique_fd fd(syscall(__NR_memfd_create, name, MFD_CLOEXEC | MFD_ALLOW_SEALING));
+    //
+    // MFD_NOEXEC_SEAL to match the semantics of the ashmem device, which did
+    // not have executable permissions. This also seals the executable
+    // permissions of the buffer (i.e. they cannot be changed by fchmod()).
+    //
+    // MFD_NOEXEC_SEAL implies MFD_ALLOW_SEALING.
+    android::base::unique_fd fd(syscall(__NR_memfd_create, name, MFD_CLOEXEC | MFD_NOEXEC_SEAL));
 
     if (fd == -1) {
         ALOGE("memfd_create(%s, %zd) failed: %s\n", name, size, strerror(errno));
diff --git a/libprocessgroup/cgrouprc/Android.bp b/libprocessgroup/cgrouprc/Android.bp
index 38b2fa3..9e46b8e 100644
--- a/libprocessgroup/cgrouprc/Android.bp
+++ b/libprocessgroup/cgrouprc/Android.bp
@@ -19,9 +19,6 @@
 cc_library {
     name: "libcgrouprc",
     host_supported: true,
-    ramdisk_available: true,
-    vendor_ramdisk_available: true,
-    recovery_available: true,
     // Do not ever mark this as vendor_available; otherwise, vendor modules
     // that links to the static library will behave unexpectedly. All on-device
     // modules should use libprocessgroup which links to the LL-NDK library
diff --git a/libsysutils/EventLogTags.logtags b/libsysutils/EventLogTags.logtags
index 713f8cd..bb06d34 100644
--- a/libsysutils/EventLogTags.logtags
+++ b/libsysutils/EventLogTags.logtags
@@ -1,4 +1,4 @@
-# See system/core/logcat/event.logtags for a description of the format of this file.
+# See system/logging/logcat/event.logtags for a description of the format of this file.
 
 # FrameworkListener dispatchCommand overflow
 78001 exp_det_dispatchCommand_overflow
diff --git a/libutils/OWNERS b/libutils/OWNERS
index 40164aa..4ce6893 100644
--- a/libutils/OWNERS
+++ b/libutils/OWNERS
@@ -1 +1,2 @@
+shayba@google.com
 smoreland@google.com
diff --git a/rootdir/init.rc b/rootdir/init.rc
index f00479e..ae6a658 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -54,6 +54,10 @@
     mkdir /linkerconfig/bootstrap 0755
     mkdir /linkerconfig/default 0755
 
+    # Greatly extend dm-verity's Merkle tree cache timeout.  The default timeout
+    # is much too short and is unnecessary, given that there is also a shrinker.
+    write /sys/module/dm_bufio/parameters/max_age_seconds 86400
+
     # Disable dm-verity hash prefetching, since it doesn't help performance
     # Read more in b/136247322
     write /sys/module/dm_verity/parameters/prefetch_cluster 0
@@ -609,17 +613,6 @@
 
     mkdir /metadata/staged-install 0770 root system
 
-    mkdir /metadata/aconfig 0775 root system
-    mkdir /metadata/aconfig/flags 0770 root system
-    mkdir /metadata/aconfig/maps 0775 root system
-    mkdir /metadata/aconfig/boot 0775 root system
-
-    mkdir /metadata/aconfig_test_missions 0775 root system
-
-    # See flag enable_system_aconfigd_rust, which toggles these processes.
-    exec_start system_aconfigd_platform_init
-    exec_start aconfigd-platform-init
-
 on late-fs
     # Ensure that tracefs has the correct permissions.
     # This does not work correctly if it is called in post-fs.
@@ -1008,16 +1001,13 @@
     wait_for_prop apexd.status activated
     perform_apex_config
 
-    # See flag enable_system_aconfigd_rust, which toggles these processes.
-    exec_start aconfigd-mainline-init
     exec_start system_aconfigd_mainline_init
-
-    # system_aconfigd_socket_service is replacing aconfigd:
-    #   - A flag (enable_system_aconfigd_rust) toggles which socket executes.
-    #   - When enabled, aconfigd is a no-op, system_aconfigd_socket_service executes.
-    #   - Conversely, when disabled, aconfigd executes, and system_aconfigd_socket_service is a no-op.
     start system_aconfigd_socket_service
-    start aconfigd
+
+    # start mainline aconfigd init, after transition, the above system_aconfigd_mainline_init
+    # will be deprecated
+    exec_start mainline_aconfigd_init
+    start mainline_aconfigd_socket_service
 
     # Create directories for boot animation.
     mkdir /data/misc/bootanim 0755 system system
diff --git a/shell_and_utilities/Android.bp b/shell_and_utilities/Android.bp
index 1f5c179..0a1f7c5 100644
--- a/shell_and_utilities/Android.bp
+++ b/shell_and_utilities/Android.bp
@@ -43,9 +43,10 @@
     required: [
         "sh.recovery",
         "toolbox.recovery",
-        "toybox.recovery",
+        "toybox_recovery",
         "ziptool.recovery",
     ],
+    recovery: true,
 }
 
 phony {
diff --git a/trusty/keymaster/Android.bp b/trusty/keymaster/Android.bp
index 5a1e420..8ebfc1a 100644
--- a/trusty/keymaster/Android.bp
+++ b/trusty/keymaster/Android.bp
@@ -106,11 +106,11 @@
         "keymint/service.cpp",
     ],
     shared_libs: [
-        "android.hardware.security.keymint-V3-ndk",
+        "android.hardware.security.keymint-V4-ndk",
         "android.hardware.security.rkp-V3-ndk",
         "android.hardware.security.secureclock-V1-ndk",
         "android.hardware.security.sharedsecret-V1-ndk",
-        "lib_android_keymaster_keymint_utils_V3",
+        "lib_android_keymaster_keymint_utils",
         "libbase",
         "libbinder_ndk",
         "libhardware",
@@ -120,9 +120,10 @@
         "libtrusty",
         "libutils",
     ],
-    required: [
-        "android.hardware.hardware_keystore_V3.xml",
-    ],
+    required: select(release_flag("RELEASE_AIDL_USE_UNFROZEN"), {
+        true: ["android.hardware.hardware_keystore.xml"],
+        default: ["android.hardware.hardware_keystore_V3.xml"],
+    }),
 }
 
 prebuilt_etc {
diff --git a/trusty/keymaster/TrustyKeymaster.cpp b/trusty/keymaster/TrustyKeymaster.cpp
index b118a20..723229d 100644
--- a/trusty/keymaster/TrustyKeymaster.cpp
+++ b/trusty/keymaster/TrustyKeymaster.cpp
@@ -295,6 +295,13 @@
     return response;
 }
 
+SetAdditionalAttestationInfoResponse TrustyKeymaster::SetAdditionalAttestationInfo(
+        const SetAdditionalAttestationInfoRequest& request) {
+    SetAdditionalAttestationInfoResponse response(message_version());
+    ForwardCommand(KM_SET_ADDITIONAL_ATTESTATION_INFO, request, &response);
+    return response;
+}
+
 GetHwInfoResponse TrustyKeymaster::GetHwInfo() {
     GetHwInfoResponse response(message_version());
     ForwardCommand(KM_GET_HW_INFO, GetHwInfoRequest(message_version()), &response);
diff --git a/trusty/keymaster/include/trusty_keymaster/TrustyKeyMintDevice.h b/trusty/keymaster/include/trusty_keymaster/TrustyKeyMintDevice.h
index c8d8932..5e876d3 100644
--- a/trusty/keymaster/include/trusty_keymaster/TrustyKeyMintDevice.h
+++ b/trusty/keymaster/include/trusty_keymaster/TrustyKeyMintDevice.h
@@ -85,6 +85,7 @@
     ScopedAStatus getRootOfTrust(const array<uint8_t, 16>& challenge,
                                  vector<uint8_t>* rootOfTrust) override;
     ScopedAStatus sendRootOfTrust(const vector<uint8_t>& rootOfTrust) override;
+    ScopedAStatus setAdditionalAttestationInfo(const vector<KeyParameter>& info) override;
 
   protected:
     std::shared_ptr<TrustyKeymaster> impl_;
diff --git a/trusty/keymaster/include/trusty_keymaster/TrustyKeymaster.h b/trusty/keymaster/include/trusty_keymaster/TrustyKeymaster.h
index c50178b..65d7217 100644
--- a/trusty/keymaster/include/trusty_keymaster/TrustyKeymaster.h
+++ b/trusty/keymaster/include/trusty_keymaster/TrustyKeymaster.h
@@ -70,6 +70,8 @@
     ConfigureVendorPatchlevelResponse ConfigureVendorPatchlevel(
             const ConfigureVendorPatchlevelRequest& request);
     GetRootOfTrustResponse GetRootOfTrust(const GetRootOfTrustRequest& request);
+    SetAdditionalAttestationInfoResponse SetAdditionalAttestationInfo(
+            const SetAdditionalAttestationInfoRequest& request);
     GetHwInfoResponse GetHwInfo();
 
     uint32_t message_version() const { return message_version_; }
diff --git a/trusty/keymaster/include/trusty_keymaster/ipc/keymaster_ipc.h b/trusty/keymaster/include/trusty_keymaster/ipc/keymaster_ipc.h
index 822e933..721315d 100644
--- a/trusty/keymaster/include/trusty_keymaster/ipc/keymaster_ipc.h
+++ b/trusty/keymaster/include/trusty_keymaster/ipc/keymaster_ipc.h
@@ -62,6 +62,7 @@
     KM_GET_ROOT_OF_TRUST            = (34 << KEYMASTER_REQ_SHIFT),
     KM_GET_HW_INFO                  = (35 << KEYMASTER_REQ_SHIFT),
     KM_GENERATE_CSR_V2              = (36 << KEYMASTER_REQ_SHIFT),
+    KM_SET_ADDITIONAL_ATTESTATION_INFO = (37 << KEYMASTER_REQ_SHIFT),
 
     // Bootloader/provisioning calls.
     KM_SET_BOOT_PARAMS = (0x1000 << KEYMASTER_REQ_SHIFT),
diff --git a/trusty/keymaster/keymint/TrustyKeyMintDevice.cpp b/trusty/keymaster/keymint/TrustyKeyMintDevice.cpp
index fec4c60..154597f 100644
--- a/trusty/keymaster/keymint/TrustyKeyMintDevice.cpp
+++ b/trusty/keymaster/keymint/TrustyKeyMintDevice.cpp
@@ -349,4 +349,18 @@
     return kmError2ScopedAStatus(KM_ERROR_UNIMPLEMENTED);
 }
 
+ScopedAStatus TrustyKeyMintDevice::setAdditionalAttestationInfo(const vector<KeyParameter>& info) {
+    keymaster::SetAdditionalAttestationInfoRequest request(impl_->message_version());
+    request.info.Reinitialize(KmParamSet(info));
+
+    keymaster::SetAdditionalAttestationInfoResponse response =
+            impl_->SetAdditionalAttestationInfo(request);
+
+    if (response.error != KM_ERROR_OK) {
+        return kmError2ScopedAStatus(response.error);
+    } else {
+        return ScopedAStatus::ok();
+    }
+}
+
 }  // namespace aidl::android::hardware::security::keymint::trusty
diff --git a/trusty/keymaster/keymint/android.hardware.security.keymint-service.trusty.xml b/trusty/keymaster/keymint/android.hardware.security.keymint-service.trusty.xml
index 3dc9c88..f74d212 100644
--- a/trusty/keymaster/keymint/android.hardware.security.keymint-service.trusty.xml
+++ b/trusty/keymaster/keymint/android.hardware.security.keymint-service.trusty.xml
@@ -1,7 +1,7 @@
 <manifest version="1.0" type="device">
     <hal format="aidl">
         <name>android.hardware.security.keymint</name>
-        <version>3</version>
+        <version>4</version>
         <fqname>IKeyMintDevice/default</fqname>
     </hal>
     <hal format="aidl">
diff --git a/trusty/secretkeeper/Android.bp b/trusty/secretkeeper/Android.bp
index 6523eda..d399bf8 100644
--- a/trusty/secretkeeper/Android.bp
+++ b/trusty/secretkeeper/Android.bp
@@ -27,18 +27,16 @@
         "src/hal_main.rs",
     ],
     rustlibs: [
+        "android.hardware.security.secretkeeper-V1-rust",
         "libandroid_logger",
         "libauthgraph_hal",
         "libauthgraph_wire",
         "libbinder_rs",
         "liblibc",
         "liblog_rust",
-        "libsecretkeeper_hal",
+        "libsecretkeeper_hal_v1",
         "libtrusty-rs",
     ],
-    defaults: [
-        "secretkeeper_use_latest_hal_aidl_rust",
-    ],
     prefer_rlib: true,
 }
 
diff --git a/trusty/trusty-storage-cf.mk b/trusty/trusty-storage-cf.mk
index 3b46445..acefd3e 100644
--- a/trusty/trusty-storage-cf.mk
+++ b/trusty/trusty-storage-cf.mk
@@ -22,4 +22,5 @@
 PRODUCT_PACKAGES += \
 	storageproxyd.system \
 	rpmb_dev.system \
+	rpmb_dev.test.system \
 
diff --git a/trusty/utils/rpmb_dev/Android.bp b/trusty/utils/rpmb_dev/Android.bp
index ef23cc5..2f362e8 100644
--- a/trusty/utils/rpmb_dev/Android.bp
+++ b/trusty/utils/rpmb_dev/Android.bp
@@ -58,3 +58,12 @@
         "rpmb_dev.wv.system.rc",
     ],
 }
+
+cc_binary {
+    name: "rpmb_dev.test.system",
+    defaults: ["rpmb_dev.cc_defaults"],
+    system_ext_specific: true,
+    init_rc: [
+        "rpmb_dev.test.system.rc",
+    ],
+}
diff --git a/trusty/utils/rpmb_dev/rpmb_dev.test.system.rc b/trusty/utils/rpmb_dev/rpmb_dev.test.system.rc
new file mode 100644
index 0000000..2127798
--- /dev/null
+++ b/trusty/utils/rpmb_dev/rpmb_dev.test.system.rc
@@ -0,0 +1,56 @@
+service trusty_test_vm /apex/com.android.virt/bin/vm run \
+    /data/local/tmp/TrustyTestVM_UnitTests/trusty-test_vm-config.json
+    disabled
+    user system
+    group system
+
+service storageproxyd_test_system /system_ext/bin/storageproxyd.system \
+        -d VSOCK:${trusty.test_vm.vm_cid}:1 \
+        -r /dev/socket/rpmb_mock_test_system \
+        -p /data/secure_storage_test_system \
+        -t sock
+    disabled
+    class hal
+    user system
+    group system
+
+service rpmb_mock_init_test_system /system_ext/bin/rpmb_dev.test.system \
+        --dev /mnt/secure_storage_rpmb_test_system/persist/RPMB_DATA --init --size 2048
+    disabled
+    user system
+    group system
+    oneshot
+
+service rpmb_mock_test_system /system_ext/bin/rpmb_dev.test.system \
+        --dev /mnt/secure_storage_rpmb_test_system/persist/RPMB_DATA \
+        --sock rpmb_mock_test_system
+    disabled
+    user system
+    group system
+    socket rpmb_mock_test_system stream 660 system system
+
+# RPMB Mock
+on post-fs-data
+    # Create a persistent location for the RPMB data
+    # (work around lack of RPMb block device on CF).
+    # file contexts secure_storage_rpmb_system_file
+    # (only used on Cuttlefish as this is non secure)
+    mkdir /metadata/secure_storage_rpmb_test_system 0770 system system
+    mkdir /mnt/secure_storage_rpmb_test_system 0770 system system
+    symlink /metadata/secure_storage_rpmb_test_system \
+            /mnt/secure_storage_rpmb_test_system/persist
+    # Create a system persist directory in /metadata
+    # (work around lack of dedicated system persist partition).
+    # file contexts secure_storage_persist_system_file
+    mkdir /metadata/secure_storage_persist_test_system 0770 system system
+    mkdir /mnt/secure_storage_persist_test_system 0770 system system
+    symlink /metadata/secure_storage_persist_test_system \
+            /mnt/secure_storage_persist_test_system/persist
+    # file contexts secure_storage_system_file
+    mkdir /data/secure_storage_test_system 0770 root system
+    symlink /mnt/secure_storage_persist_test_system/persist \
+            /data/secure_storage_test_system/persist
+    chown root system /data/secure_storage_test_system/persist
+    # setprop storageproxyd_test_system.trusty_ipc_dev VSOCK:${trusty.test_vm.vm_cid}:1
+    exec_start rpmb_mock_init_test_system
+    start rpmb_mock_test_system