JDK-8187597 : WrongTypeException is occurred at CLHSDB jstack after JDK-8186837
  • Type: Bug
  • Component: hotspot
  • Sub-Component: svc-agent
  • Affected Version: 10
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2017-09-16
  • Updated: 2018-01-17
  • Resolved: 2017-09-26
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JDK 10
10 b31Fixed
Related Reports
Duplicate :  
JDK-8187623 - sun.jvm.hotspot.types.WrongTypeException: field "_stack_traversal_mark" in type nmethod is not of type jlong, but instead of type long
Relates :  
JDK-8186837 - Memory ordering nmethod, _state and _stack_traversal_mark
Description
I tried to get thread dump via jstack command on CLHSDB. But it was failed as below:

{{
Caused by: sun.jvm.hotspot.types.WrongTypeException: field "_stack_traversal_mark" in type nmethod is not of type jlong, but instead of type long
        at jdk.hotspot.agent/sun.jvm.hotspot.types.basic.BasicType.getField(BasicType.java:206)
        at jdk.hotspot.agent/sun.jvm.hotspot.types.basic.BasicType.getField(BasicType.java:212)
        at jdk.hotspot.agent/sun.jvm.hotspot.types.basic.BasicType.getJLongField(BasicType.java:249)
        at jdk.hotspot.agent/sun.jvm.hotspot.code.NMethod.initialize(NMethod.java:108)
        at jdk.hotspot.agent/sun.jvm.hotspot.code.NMethod.access$000(NMethod.java:35)
        at jdk.hotspot.agent/sun.jvm.hotspot.code.NMethod$1.update(NMethod.java:81)
        at jdk.hotspot.agent/sun.jvm.hotspot.runtime.VM.registerVMInitializedObserver(VM.java:451)
        at jdk.hotspot.agent/sun.jvm.hotspot.code.NMethod.<clinit>(NMethod.java:79)
        ... 23 more
}}

I think this exception is caused by JDK-8186837.
This changeset has changed the type of `nmethod::_stack_traversal_mark` to `long` from `jlong`.

SA should follow this change.