diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 2dd310e..84ef489 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -30,6 +30,7 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
+#include <algorithm>
 
 #include <binder/Binder.h>
 #include <binder/BpBinder.h>
diff --git a/libs/binder/aidl/android/content/pm/IPackageManagerNative.aidl b/libs/binder/aidl/android/content/pm/IPackageManagerNative.aidl
index f8a8843..3ddfefa 100644
--- a/libs/binder/aidl/android/content/pm/IPackageManagerNative.aidl
+++ b/libs/binder/aidl/android/content/pm/IPackageManagerNative.aidl
@@ -43,6 +43,18 @@
     @utf8InCpp String[] getNamesForUids(in int[] uids);
 
     /**
+     * Return the UID associated with the given package name.
+     * Note that the same package will have different UIDs under different UserHandle on
+     * the same device.
+     * @param packageName The full name (i.e. com.google.apps.contacts) of the desired package.
+     * @param flags Additional option flags to modify the data returned.
+     * @param userId The user handle identifier to look up the package under.
+     * @return Returns an integer UID who owns the given package name, or -1 if no such package is
+     *            available to the caller.
+     */
+     int getPackageUid(in @utf8InCpp String packageName, in long flags, in int userId);
+
+    /**
      * Returns the name of the installer (a package) which installed the named
      * package. Preloaded packages return the string "preload". Sideloaded packages
      * return an empty string. Unknown or unknowable are returned as empty strings.
diff --git a/libs/binder/binder_module.h b/libs/binder/binder_module.h
index eef07ae..b3a2d9e 100644
--- a/libs/binder/binder_module.h
+++ b/libs/binder/binder_module.h
@@ -32,77 +32,4 @@
 #include <linux/android/binder.h>
 #include <sys/ioctl.h>
 
-#ifndef BR_FROZEN_REPLY
-// Temporary definition of BR_FROZEN_REPLY. For production
-// this will come from UAPI binder.h
-#define BR_FROZEN_REPLY _IO('r', 18)
-#endif // BR_FROZEN_REPLY
-
-#ifndef BINDER_FREEZE
-/*
- * Temporary definitions for freeze support. For the final version
- * these will be defined in the UAPI binder.h file from upstream kernel.
- */
-#define BINDER_FREEZE _IOW('b', 14, struct binder_freeze_info)
-
-struct binder_freeze_info {
-    //
-    // Group-leader PID of process to be frozen
-    //
-    uint32_t pid;
-    //
-    // Enable(1) / Disable(0) freeze for given PID
-    //
-    uint32_t enable;
-    //
-    // Timeout to wait for transactions to drain.
-    // 0: don't wait (ioctl will return EAGAIN if not drained)
-    // N: number of ms to wait
-    uint32_t timeout_ms;
-};
-#endif // BINDER_FREEZE
-
-#ifndef BINDER_GET_FROZEN_INFO
-
-#define BINDER_GET_FROZEN_INFO _IOWR('b', 15, struct binder_frozen_status_info)
-
-struct binder_frozen_status_info {
-    //
-    // Group-leader PID of process to be queried
-    //
-    __u32 pid;
-    //
-    // Indicates whether the process has received any sync calls since last
-    // freeze (cleared at freeze/unfreeze)
-    // bit 0: received sync transaction after being frozen
-    // bit 1: new pending sync transaction during freezing
-    //
-    __u32 sync_recv;
-    //
-    // Indicates whether the process has received any async calls since last
-    // freeze (cleared at freeze/unfreeze)
-    //
-    __u32 async_recv;
-};
-#endif // BINDER_GET_FROZEN_INFO
-
-#ifndef BR_ONEWAY_SPAM_SUSPECT
-// Temporary definition of BR_ONEWAY_SPAM_SUSPECT. For production
-// this will come from UAPI binder.h
-#define BR_ONEWAY_SPAM_SUSPECT _IO('r', 19)
-#endif // BR_ONEWAY_SPAM_SUSPECT
-
-#ifndef BINDER_ENABLE_ONEWAY_SPAM_DETECTION
-/*
- * Temporary definitions for oneway spam detection support. For the final version
- * these will be defined in the UAPI binder.h file from upstream kernel.
- */
-#define BINDER_ENABLE_ONEWAY_SPAM_DETECTION _IOW('b', 16, __u32)
-#endif // BINDER_ENABLE_ONEWAY_SPAM_DETECTION
-
-#ifndef BR_TRANSACTION_PENDING_FROZEN
-// Temporary definition of BR_TRANSACTION_PENDING_FROZEN until UAPI binder.h includes it.
-#define BR_TRANSACTION_PENDING_FROZEN _IO('r', 20)
-#endif // BR_TRANSACTION_PENDING_FROZEN
-
 #endif // _BINDER_MODULE_H_
diff --git a/libs/binder/include_rpc_unstable/binder_rpc_unstable.hpp b/libs/binder/include_rpc_unstable/binder_rpc_unstable.hpp
index 7d0acd1..392ebb5 100644
--- a/libs/binder/include_rpc_unstable/binder_rpc_unstable.hpp
+++ b/libs/binder/include_rpc_unstable/binder_rpc_unstable.hpp
@@ -73,6 +73,17 @@
         const ARpcSession_FileDescriptorTransportMode modes[],
         size_t modes_len);
 
+// Sets the maximum number of threads that the Server will use for
+// incoming client connections.
+//
+// This must be called before adding a client session. This corresponds
+// to the number of incoming connections to RpcSession objects in the
+// server, which will correspond to the number of outgoing connections
+// in client RpcSession objects.
+//
+// If this is not specified, this will be a single-threaded server.
+void ARpcServer_setMaxThreads(ARpcServer* server, size_t threads);
+
 // Runs ARpcServer_join() in a background thread. Immediately returns.
 void ARpcServer_start(ARpcServer* server);
 
diff --git a/libs/binder/libbinder_rpc_unstable.cpp b/libs/binder/libbinder_rpc_unstable.cpp
index cb44c58..21537fc 100644
--- a/libs/binder/libbinder_rpc_unstable.cpp
+++ b/libs/binder/libbinder_rpc_unstable.cpp
@@ -167,6 +167,10 @@
     server->setSupportedFileDescriptorTransportModes(modevec);
 }
 
+void ARpcServer_setMaxThreads(ARpcServer* handle, size_t threads) {
+    handleToStrongPointer<RpcServer>(handle)->setMaxThreads(threads);
+}
+
 void ARpcServer_start(ARpcServer* handle) {
     handleToStrongPointer<RpcServer>(handle)->start();
 }
diff --git a/libs/binder/rust/rpcbinder/src/server/android.rs b/libs/binder/rust/rpcbinder/src/server/android.rs
index ad0365b..2ab3447 100644
--- a/libs/binder/rust/rpcbinder/src/server/android.rs
+++ b/libs/binder/rust/rpcbinder/src/server/android.rs
@@ -147,6 +147,20 @@
         }
     }
 
+    /// Sets the max number of threads this Server uses for incoming client connections.
+    ///
+    /// This must be called before adding a client session. This corresponds
+    /// to the number of incoming connections to RpcSession objects in the
+    /// server, which will correspond to the number of outgoing connections
+    /// in client RpcSession objects. Specifically this is useful for handling
+    /// client-side callback connections.
+    ///
+    /// If this is not specified, this will be a single-threaded server.
+    pub fn set_max_threads(&self, count: usize) {
+        // SAFETY: RpcServerRef wraps a valid pointer to an ARpcServer.
+        unsafe { binder_rpc_unstable_bindgen::ARpcServer_setMaxThreads(self.as_ptr(), count) };
+    }
+
     /// Starts a new background thread and calls join(). Returns immediately.
     pub fn start(&self) {
         // SAFETY: RpcServerRef wraps a valid pointer to an ARpcServer.
diff --git a/libs/binder/tests/binderLibTest.cpp b/libs/binder/tests/binderLibTest.cpp
index 2cea14f..1f61f18 100644
--- a/libs/binder/tests/binderLibTest.cpp
+++ b/libs/binder/tests/binderLibTest.cpp
@@ -506,10 +506,11 @@
 
     // Pass test on devices where BINDER_FREEZE ioctl is not supported
     int ret = IPCThreadState::self()->freeze(pid, false, 0);
-    if (ret != 0) {
+    if (ret == -EINVAL) {
         GTEST_SKIP();
         return;
     }
+    EXPECT_EQ(NO_ERROR, ret);
 
     EXPECT_EQ(-EAGAIN, IPCThreadState::self()->freeze(pid, true, 0));
 
diff --git a/libs/binder/tests/unit_fuzzers/Android.bp b/libs/binder/tests/unit_fuzzers/Android.bp
index a881582..6871cca 100644
--- a/libs/binder/tests/unit_fuzzers/Android.bp
+++ b/libs/binder/tests/unit_fuzzers/Android.bp
@@ -52,6 +52,18 @@
             enabled: false,
         },
     },
+    fuzz_config: {
+        cc: [
+            "smoreland@google.com",
+            "waghpawan@google.com",
+        ],
+        componentid: 32456,
+        description: "The fuzzer targets the APIs of libbinder",
+        vector: "local_no_privileges_required",
+        service_privilege: "privileged",
+        users: "multi_user",
+        fuzzed_code_usage: "shipped",
+    },
 }
 
 cc_fuzz {
diff --git a/libs/renderengine/include/renderengine/RenderEngine.h b/libs/renderengine/include/renderengine/RenderEngine.h
index 818d035..b41fa1d 100644
--- a/libs/renderengine/include/renderengine/RenderEngine.h
+++ b/libs/renderengine/include/renderengine/RenderEngine.h
@@ -33,7 +33,7 @@
 #include <memory>
 
 /**
- * Allows to set RenderEngine backend to GLES (default) or SkiaGL (NOT yet supported).
+ * Allows to override the RenderEngine backend.
  */
 #define PROPERTY_DEBUG_RENDERENGINE_BACKEND "debug.renderengine.backend"
 
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index f7cc13e..b980a65 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -2252,7 +2252,7 @@
     outTransactionsAreEmpty = !needsTraversal;
     const bool shouldCommit = (getTransactionFlags() & ~eTransactionFlushNeeded) || needsTraversal;
     if (shouldCommit) {
-        commitTransactions();
+        commitTransactionsLegacy();
     }
 
     bool mustComposite = latchBuffers() || shouldCommit;
@@ -2380,8 +2380,14 @@
         }
     }
 
+    // Keep a copy of the drawing state (that is going to be overwritten
+    // by commitTransactionsLocked) outside of mStateLock so that the side
+    // effects of the State assignment don't happen with mStateLock held,
+    // which can cause deadlocks.
+    State drawingState(mDrawingState);
+    Mutex::Autolock lock(mStateLock);
     bool mustComposite = false;
-    mustComposite |= applyAndCommitDisplayTransactionStates(update.transactions);
+    mustComposite |= applyAndCommitDisplayTransactionStatesLocked(update.transactions);
 
     {
         ATRACE_NAME("LayerSnapshotBuilder:update");
@@ -2420,7 +2426,7 @@
     bool newDataLatched = false;
     if (!mLegacyFrontEndEnabled) {
         ATRACE_NAME("DisplayCallbackAndStatsUpdates");
-        mustComposite |= applyTransactions(update.transactions, vsyncId);
+        mustComposite |= applyTransactionsLocked(update.transactions, vsyncId);
         traverseLegacyLayers([&](Layer* layer) { layer->commitTransaction(); });
         const nsecs_t latchTime = systemTime();
         bool unused = false;
@@ -3266,6 +3272,19 @@
 
 void SurfaceFlinger::commitTransactions() {
     ATRACE_CALL();
+    mDebugInTransaction = systemTime();
+
+    // Here we're guaranteed that some transaction flags are set
+    // so we can call commitTransactionsLocked unconditionally.
+    // We clear the flags with mStateLock held to guarantee that
+    // mCurrentState won't change until the transaction is committed.
+    mScheduler->modulateVsync({}, &VsyncModulator::onTransactionCommit);
+    commitTransactionsLocked(clearTransactionFlags(eTransactionMask));
+    mDebugInTransaction = 0;
+}
+
+void SurfaceFlinger::commitTransactionsLegacy() {
+    ATRACE_CALL();
 
     // Keep a copy of the drawing state (that is going to be overwritten
     // by commitTransactionsLocked) outside of mStateLock so that the side
@@ -5070,9 +5089,8 @@
     return needsTraversal;
 }
 
-bool SurfaceFlinger::applyAndCommitDisplayTransactionStates(
+bool SurfaceFlinger::applyAndCommitDisplayTransactionStatesLocked(
         std::vector<TransactionState>& transactions) {
-    Mutex::Autolock lock(mStateLock);
     bool needsTraversal = false;
     uint32_t transactionFlags = 0;
     for (auto& transaction : transactions) {
@@ -5864,7 +5882,8 @@
     if (mLegacyFrontEndEnabled) {
         applyTransactions(transactions, VsyncId{0});
     } else {
-        applyAndCommitDisplayTransactionStates(transactions);
+        Mutex::Autolock lock(mStateLock);
+        applyAndCommitDisplayTransactionStatesLocked(transactions);
     }
 
     {
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 6b44401..61360a7 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -751,7 +751,8 @@
                                             bool force = false)
             REQUIRES(mStateLock, kMainThreadContext);
 
-    void commitTransactions() EXCLUDES(mStateLock) REQUIRES(kMainThreadContext);
+    void commitTransactionsLegacy() EXCLUDES(mStateLock) REQUIRES(kMainThreadContext);
+    void commitTransactions() REQUIRES(kMainThreadContext, mStateLock);
     void commitTransactionsLocked(uint32_t transactionFlags)
             REQUIRES(mStateLock, kMainThreadContext);
     void doCommitTransactions() REQUIRES(mStateLock);
@@ -804,8 +805,8 @@
     bool flushTransactionQueues(VsyncId) REQUIRES(kMainThreadContext);
 
     bool applyTransactions(std::vector<TransactionState>&, VsyncId) REQUIRES(kMainThreadContext);
-    bool applyAndCommitDisplayTransactionStates(std::vector<TransactionState>& transactions)
-            REQUIRES(kMainThreadContext);
+    bool applyAndCommitDisplayTransactionStatesLocked(std::vector<TransactionState>& transactions)
+            REQUIRES(kMainThreadContext, mStateLock);
 
     // Returns true if there is at least one transaction that needs to be flushed
     bool transactionFlushNeeded();
diff --git a/services/surfaceflinger/fuzzer/surfaceflinger_fuzzers_utils.h b/services/surfaceflinger/fuzzer/surfaceflinger_fuzzers_utils.h
index 4fc39cc..81fbc84 100644
--- a/services/surfaceflinger/fuzzer/surfaceflinger_fuzzers_utils.h
+++ b/services/surfaceflinger/fuzzer/surfaceflinger_fuzzers_utils.h
@@ -610,7 +610,7 @@
         {
             ftl::FakeGuard guard(kMainThreadContext);
 
-            mFlinger->commitTransactions();
+            mFlinger->commitTransactionsLegacy();
             mFlinger->flushTransactionQueues(getFuzzedVsyncId(mFdp));
 
             scheduler::FrameTargeter frameTargeter(displayId, mFdp.ConsumeBool());