src/share/vm/services/threadService.cpp

*** 164,173 ****
--- 164,174 ----
        obj = (oop) enter_obj->object();
      }
      // If obj == NULL, then ObjectMonitor is raw which doesn't count.
    }
  
+   obj = oopDesc::bs()->write_barrier(obj);
    Handle h(obj);
    return h;
  }
  
  bool ThreadService::set_thread_monitoring_contention(bool flag) {
*** 587,604 ****
--- 588,608 ----
  
  
  bool ThreadStackTrace::is_owned_monitor_on_stack(oop object) {
    assert(SafepointSynchronize::is_at_safepoint(), "all threads are stopped");
  
+   object = oopDesc::bs()->write_barrier(object);
+ 
    bool found = false;
    int num_frames = get_stack_depth();
    for (int depth = 0; depth < num_frames; depth++) {
      StackFrameInfo* frame = stack_frame_at(depth);
      int len = frame->num_locked_monitors();
      GrowableArray<oop>* locked_monitors = frame->locked_monitors();
      for (int j = 0; j < len; j++) {
        oop monitor = locked_monitors->at(j);
+       monitor = oopDesc::bs()->write_barrier(monitor);
        assert(monitor != NULL, "must be a Java object");
        if (monitor == object) {
          found = true;
          break;
        }