--- a/src/java.base/share/classes/java/util/concurrent/locks/AbstractQueuedSynchronizer.java	Fri Sep 27 10:48:23 2019 -0700
+++ b/src/java.base/share/classes/java/util/concurrent/locks/AbstractQueuedSynchronizer.java	Fri Sep 27 12:20:14 2019 -0700
@@ -502,7 +502,7 @@
         }
 
         public final boolean block() {
-            while (!isReleasable()) LockSupport.park(this);
+            while (!isReleasable()) LockSupport.park();
             return true;
         }
     }