diff -r fc6a5ae3fef5 -r 0386097d43d8 src/share/vm/prims/jvmtiThreadState.hpp
--- a/src/share/vm/prims/jvmtiThreadState.hpp	Sat Dec 20 09:59:01 2008 -0800
+++ b/src/share/vm/prims/jvmtiThreadState.hpp	Mon Mar 02 13:57:17 2009 -0700
@@ -319,6 +319,11 @@
 
     JvmtiThreadState *state = thread->jvmti_thread_state();
     if (state == NULL) {
+      if (thread->is_exiting()) {
+        // don't add a JvmtiThreadState to a thread that is exiting
+        return NULL;
+      }
+
       state = new JvmtiThreadState(thread);
     }
     return state;