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  1. JDK
  2. JDK-6445141

SA: Unknown oop exception while heap walking.

    Details

    • Type: Bug
    • Status: Open
    • Priority: P4
    • Resolution: Unresolved
    • Affects Version/s: 6
    • Fix Version/s: tbd
    • Component/s: hotspot
    • Labels:
    • Subcomponent:
    • Understanding:
      Cause Known
    • CPU:
      generic
    • OS:
      generic

      Backports

        Description

        SA throws Unknown oop following exception during heap walking.

        Unknown oop at 0x916806e8
        Oop's klass is 0xaeac6188
        Exception in thread "main" sun.jvm.hotspot.oops.UnknownOopException
        at sun.jvm.hotspot.oops.ObjectHeap.newOop(ObjectHeap.java:357)
        at sun.jvm.hotspot.memory.CompactibleFreeListSpace.getLiveRegions(CompactibleFreeListSpace.java:88)
        at sun.jvm.hotspot.memory.CompactibleFreeListSpace.used(CompactibleFreeListSpace.java:39)
        at sun.jvm.hotspot.memory.ConcurrentMarkSweepGeneration.used(ConcurrentMarkSweepGeneration.java:44)
        at sun.jvm.hotspot.tools.HeapSummary.printGen(HeapSummary.java:171)
        at sun.jvm.hotspot.tools.HeapSummary.run(HeapSummary.java:77)
        at sun.jvm.hotspot.tools.JMap.run(JMap.java:85)
        at sun.jvm.hotspot.tools.Tool.start(Tool.java:204)
        at sun.jvm.hotspot.tools.JMap.main(JMap.java:126)

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                • Assignee:
                  Unassigned
                  Reporter:
                  swamyv Swamy Venkataramanappa
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                    Updated:
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