--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/tools/PStack.java	Mon Jun 11 13:10:14 2012 -0400
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/tools/PStack.java	Thu Jun 14 02:12:46 2012 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -158,7 +158,7 @@
                         printUnknown(out);
                      }
                   }
-                  f = f.sender();
+                  f = f.sender(th);
                }
             } catch (Exception exp) {
                exp.printStackTrace();