--- old/src/share/vm/runtime/vmThread.cpp	2013-02-19 10:24:50.065114100 +0100
+++ new/src/share/vm/runtime/vmThread.cpp	2013-02-19 10:24:49.784313600 +0100
@@ -383,11 +383,17 @@
     op->evaluate();
 
     if (event.should_commit()) {
-      event.set_operation(op->type());
-      event.set_safepoint(op->evaluate_at_safepoint());
-      event.set_blocking(!op->evaluate_concurrently());
-      event.set_caller(op->calling_thread()->osthread()->thread_id());
-      event.commit();
+      if (!op->evaluate_concurrently()) {
+        // Only try to commit vm operation event for non-concurrent vm operations.
+        // For concurrent vm operations, the caller thread could have exited already.
+        event.set_operation(op->type());
+        event.set_safepoint(op->evaluate_at_safepoint());
+        event.set_blocking(true);
+        event.set_caller(op->calling_thread()->osthread()->thread_id());
+        event.commit();
+      } else {
+        event.cancel();
+      }
     }
 
 #ifndef USDT2