IV08000: CRASH IN LIBJ9GC*.SO WHEN DEBUGGER IS ATTACHED

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APAR status

  • Closed as program error.

Error description

  • Error Message: N/A
    .
    Stack Trace: 19       CELQHROD    +00000258              CELQLIB
                 CELQHROD
    20       GC_VMThreadMonitorRecordSlotIterator::nextSlot()
                         +0000000E              *PATHNAM
    21       GC_VMThreadIterator::nextSlot()
                         +00000094              *PATHNAM
    22
    MM_RootScanner::scanOneThread(MM_EnvironmentModron*,J9VMThre
                         +000000E6              *PATHNAM
    23       MM_RootScanner::scanThreads(MM_EnvironmentModron*)
                         +000000F0              *PATHNAM
    24       MM_RootScanner::scanRoots(MM_EnvironmentModron*)
                         +00000314              *PATHNAM
    25
    MM_MarkingScheme::markLiveObjectsRoots(MM_EnvironmentStandar
                         +000009D8              *PATHNAM
    26       MM_ParallelMarkTask::run(MM_EnvironmentModron*)
                         +00000062              *PATHNAM
    27
    MM_ParallelDispatcher::slaveEntryPoint(MM_EnvironmentModron*
                         +000000E8              *PATHNAM
    28       dispatcher_thread_proc2(J9PortLibrary*,void*)
                         +0000013A              *PATHNAM
    29       j9sig_protect
                         +0000076E              *PATHNAM
    30       dispatcher_thread_proc
                         +00000058              *PATHNAM
    31       thread_wrapper
                         +00000562              *PATHNAM
    .
    

Local fix

Problem summary

  • The problem is caused by the JIT compiler failing to register
    certain entries and exits from synchronized blocks in certain
    cases when a debugger is attached.  This problem will show up
    only on Linux on Z and zOS platforms.
    

Problem conclusion

  • This defect will be fixed in:
    6.0.1 SR1
    7.0.0 SR1
    .
    The JVM has has been updated to prevent the crash from
    occurring.
    .
    To obtain the fix:
    Install build 20110825 or later
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV08000

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-09-21

  • Closed date

    2011-09-21

  • Last modified date

    2012-05-28

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    JIT

  • Fixed component ID

    620700124

Applicable component levels

  • R260 PSY

       UP



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Document information


More support for:

Runtimes for Java Technology
Just In Time (JIT) Compiler

Software version:

260

Reference #:

IV08000

Modified date:

2012-05-28

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