diff --git a/services/core/java/com/android/server/MountService.java b/services/core/java/com/android/server/MountService.java
index 92b98a7..ed136e9 100644
--- a/services/core/java/com/android/server/MountService.java
+++ b/services/core/java/com/android/server/MountService.java
@@ -3431,6 +3431,11 @@
         }
 
         public boolean hasExternalStorage(int uid, String packageName) {
+            // No need to check for system uid. This avoids a deadlock between
+            // PackageManagerService and AppOpsService.
+            if (uid == Process.SYSTEM_UID) {
+                return true;
+            }
             // No locking - CopyOnWriteArrayList
             for (ExternalStorageMountPolicy policy : mPolicies) {
                 final boolean policyHasStorage = policy.hasExternalStorage(uid, packageName);