diff --git a/services/core/java/com/android/server/pm/AppDataHelper.java b/services/core/java/com/android/server/pm/AppDataHelper.java
index 79d1753..348452e 100644
--- a/services/core/java/com/android/server/pm/AppDataHelper.java
+++ b/services/core/java/com/android/server/pm/AppDataHelper.java
@@ -534,9 +534,12 @@
         } else {
             storageFlags = StorageManager.FLAG_STORAGE_DE | StorageManager.FLAG_STORAGE_CE;
         }
-        List<String> deferPackages = reconcileAppsDataLI(StorageManager.UUID_PRIVATE_INTERNAL,
-                UserHandle.USER_SYSTEM, storageFlags, true /* migrateAppData */,
-                true /* onlyCoreApps */);
+        final List<String> deferPackages;
+        synchronized (mPm.mInstallLock) {
+           deferPackages = reconcileAppsDataLI(StorageManager.UUID_PRIVATE_INTERNAL,
+                    UserHandle.USER_SYSTEM, storageFlags, true /* migrateAppData */,
+                    true /* onlyCoreApps */);
+        }
         Future<?> prepareAppDataFuture = SystemServerInitThreadPool.submit(() -> {
             TimingsTraceLog traceLog = new TimingsTraceLog("SystemServerTimingAsync",
                     Trace.TRACE_TAG_PACKAGE_MANAGER);