diff --git a/services/backup/java/com/android/server/backup/UserBackupManagerService.java b/services/backup/java/com/android/server/backup/UserBackupManagerService.java
index c0af99c305422..e24eaa50377a4 100644
--- a/services/backup/java/com/android/server/backup/UserBackupManagerService.java
+++ b/services/backup/java/com/android/server/backup/UserBackupManagerService.java
@@ -367,6 +367,9 @@ public class UserBackupManagerService {
     private long mCurrentToken = 0;
     @Nullable private File mAncestralSerialNumberFile;
 
+    private final ContentObserver mSetupObserver;
+    private final BroadcastReceiver mRunBackupReceiver;
+    private final BroadcastReceiver mRunInitReceiver;
 
     /**
      * Creates an instance of {@link UserBackupManagerService} and initializes state for it. This
@@ -493,11 +496,11 @@ public class UserBackupManagerService {
         mAutoRestore = Settings.Secure.getIntForUser(resolver,
                 Settings.Secure.BACKUP_AUTO_RESTORE, 1, userId) != 0;
 
-        ContentObserver setupObserver = new SetupObserver(this, mBackupHandler);
+        mSetupObserver = new SetupObserver(this, mBackupHandler);
         resolver.registerContentObserver(
                 Settings.Secure.getUriFor(Settings.Secure.USER_SETUP_COMPLETE),
                 /* notifyForDescendents */ false,
-                setupObserver,
+                mSetupObserver,
                 mUserId);
 
         mBaseStateDir = checkNotNull(baseStateDir, "baseStateDir cannot be null");
@@ -516,21 +519,21 @@ public class UserBackupManagerService {
         mBackupPasswordManager = new BackupPasswordManager(mContext, mBaseStateDir, mRng);
 
         // Receivers for scheduled backups and transport initialization operations.
-        BroadcastReceiver runBackupReceiver = new RunBackupReceiver(this);
+        mRunBackupReceiver = new RunBackupReceiver(this);
         IntentFilter filter = new IntentFilter();
         filter.addAction(RUN_BACKUP_ACTION);
         context.registerReceiverAsUser(
-                runBackupReceiver,
+                mRunBackupReceiver,
                 UserHandle.of(userId),
                 filter,
                 android.Manifest.permission.BACKUP,
                 /* scheduler */ null);
 
-        BroadcastReceiver runInitReceiver = new RunInitializeReceiver(this);
+        mRunInitReceiver = new RunInitializeReceiver(this);
         filter = new IntentFilter();
         filter.addAction(RUN_INITIALIZE_ACTION);
         context.registerReceiverAsUser(
-                runInitReceiver,
+                mRunInitReceiver,
                 UserHandle.of(userId),
                 filter,
                 android.Manifest.permission.BACKUP,
@@ -599,6 +602,12 @@ public class UserBackupManagerService {
 
     /** Cleans up state when the user of this service is stopped. */
     void tearDownService() {
+        mAgentTimeoutParameters.stop();
+        mConstants.stop();
+        mContext.getContentResolver().unregisterContentObserver(mSetupObserver);
+        mContext.unregisterReceiver(mRunBackupReceiver);
+        mContext.unregisterReceiver(mRunInitReceiver);
+        mContext.unregisterReceiver(mPackageTrackingReceiver);
         mUserBackupThread.quit();
     }
 
@@ -747,7 +756,7 @@ public class UserBackupManagerService {
 
     @VisibleForTesting
     BroadcastReceiver getPackageTrackingReceiver() {
-        return mBroadcastReceiver;
+        return mPackageTrackingReceiver;
     }
 
     @Nullable
@@ -874,7 +883,7 @@ public class UserBackupManagerService {
         filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
         filter.addDataScheme("package");
         mContext.registerReceiverAsUser(
-                mBroadcastReceiver,
+                mPackageTrackingReceiver,
                 UserHandle.of(mUserId),
                 filter,
                 /* broadcastPermission */ null,
@@ -885,7 +894,7 @@ public class UserBackupManagerService {
         sdFilter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE);
         sdFilter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);
         mContext.registerReceiverAsUser(
-                mBroadcastReceiver,
+                mPackageTrackingReceiver,
                 UserHandle.of(mUserId),
                 sdFilter,
                 /* broadcastPermission */ null,
@@ -1158,7 +1167,7 @@ public class UserBackupManagerService {
      * A {@link BroadcastReceiver} tracking changes to packages and sd cards in order to update our
      * internal bookkeeping.
      */
-    private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
+    private BroadcastReceiver mPackageTrackingReceiver = new BroadcastReceiver() {
         public void onReceive(Context context, Intent intent) {
             if (MORE_DEBUG) {
                 Slog.d(TAG, "Received broadcast " + intent);