title: jstack in mixed mode: WrongTypeException: No suitable match for type of address
body: <p>I'm trying to run jstack on ubuntu in mixed mode: </p>
  
  <pre><code> $ jstack -m 7219     
  </code></pre>
  
  <p>The result is this exception:</p>
  
  <pre><code>Attaching to process ID 7219, please wait...
  Debugger attached successfully.
  Server compiler detected.
    JVM version is 25.162-b12
    Exception in thread "main" java.lang.reflect.InvocationTargetException
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at  sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)        
      at java.lang.reflect.Method.invoke(Method.java:498)
      at sun.tools.jstack.JStack.runJStackTool(JStack.java:140)
      at sun.tools.jstack.JStack.main(JStack.java:106)
   Caused by: java.lang.RuntimeException: Unable to deduce type of thread from address 0x00007f02cc002800 (expected type JavaThread, CompilerThread, ServiceThread, JvmtiAgentThread, or SurrogateLockerThread)
      at sun.jvm.hotspot.runtime.Threads.createJavaThreadWrapper(Threads.java:166)
      at sun.jvm.hotspot.runtime.Threads.first(Threads.java:150)
      at sun.jvm.hotspot.tools.PStack.initJFrameCache(PStack.java:200)
      at sun.jvm.hotspot.tools.PStack.run(PStack.java:71)
      at sun.jvm.hotspot.tools.PStack.run(PStack.java:58)
      at sun.jvm.hotspot.tools.PStack.run(PStack.java:53)
      at sun.jvm.hotspot.tools.JStack.run(JStack.java:66)
      at sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:260)
      at sun.jvm.hotspot.tools.Tool.start(Tool.java:223)
      at sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
      at sun.jvm.hotspot.tools.JStack.main(JStack.java:92)
      ... 6 more
    Caused by: sun.jvm.hotspot.types.WrongTypeException: No suitable match for type of address 0x00007f02cc002800
      at sun.jvm.hotspot.runtime.InstanceConstructor.newWrongTypeException(InstanceConstructor.java:62)
      at sun.jvm.hotspot.runtime.VirtualConstructor.instantiateWrapperFor(VirtualConstructor.java:80)
      at sun.jvm.hotspot.runtime.Threads.createJavaThreadWrapper(Threads.java:162)
      ... 16 more
  </code></pre>
  
  <p>The process with PID 7219 was started with the same user as jstack.</p>