Merge "remove the wms lock in notifyMovementBoundsChanged method." into main
diff --git a/services/core/java/com/android/server/wm/TaskDisplayArea.java b/services/core/java/com/android/server/wm/TaskDisplayArea.java
index 42ea5a8..83d08cc 100644
--- a/services/core/java/com/android/server/wm/TaskDisplayArea.java
+++ b/services/core/java/com/android/server/wm/TaskDisplayArea.java
@@ -843,7 +843,7 @@
      */
     void positionTaskBehindHome(Task task) {
         final Task home = getOrCreateRootHomeTask();
-        final WindowContainer homeParent = home.getParent();
+        final WindowContainer homeParent = home != null ? home.getParent() : null;
         final Task homeParentTask = homeParent != null ? homeParent.asTask() : null;
         if (homeParentTask == null) {
             // reparent throws if parent didn't change...