src/hotspot/share/services/management.cpp

*** 1643,1652 ****
--- 1643,1658 ----
    // exclude externally visible JavaThreads
    if (thread->is_Java_thread() && !thread->is_hidden_from_external_view()) {
      return;
    }
  
+   // NonJavaThread instances may not be fully initialized yet, so we need to
+   // skip any that aren't - check for zero stack_size()
+   if (!thread->is_Java_thread() && thread->stack_size() == 0) {
+     return;
+   }
+ 
    if (_count >= _names_len || _count >= _times_len) {
      // skip if the result array is not big enough
      return;
    }