Clear calling id before binder call

The permission check in app compat fails without clearing calling id.

Bug: 149662772
Test: launch com.appstem.mammoth, it crashed -> add clearcallingid -> doesn't crash
Change-Id: Ide87da8b8c13e8a10723f379bd4e4b386e5d35e4

1 files changed, 3 insertions, 0 deletions

diff --git a/services/core/java/com/android/server/pm/permission/PermissionManagerService.java b/services/core/java/com/android/server/pm/permission/PermissionManagerService.java
index 1fc2dd5193e1..36697f9b6d60 100644
--- a/services/core/java/com/android/server/pm/permission/PermissionManagerService.java
+++ b/services/core/java/com/android/server/pm/permission/PermissionManagerService.java
@@ -1878,6 +1878,7 @@ public class PermissionManagerService extends IPermissionManager.Stub {
             return false;
         }
 
+        final long token = Binder.clearCallingIdentity();
         try {
             if (permName.equals(Manifest.permission.ACCESS_BACKGROUND_LOCATION)
                     && mPlatformCompat.isChangeEnabledByPackageName(BACKGROUND_RATIONALE_CHANGE_ID,
@@ -1886,6 +1887,8 @@ public class PermissionManagerService extends IPermissionManager.Stub {
             }
         } catch (RemoteException e) {
             Log.e(TAG, "Unable to check if compatibility change is enabled.", e);
+        } finally {
+            Binder.restoreCallingIdentity(token);
         }
 
         return (flags & PackageManager.FLAG_PERMISSION_USER_SET) != 0;