PM00573: CRASH IN FASTLOCALMARK()

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Error Message: Crash in fastLocalMark()
    .
    Stack Trace: Native stack for thread b1449ba0 - GC Helper 3
     ============================
            at 0xb7d6e023 in fastLocalMark+0xe3 (libjvm.so)
            at 0xb7d6e802 in parallelMark+0x112 (libjvm.so)
            at 0xb7d6ebd3 in parallelMarkHelper+0x43 (libjvm.so)
            at 0xb7d65321 in gcHelper+0x1d1 (libjvm.so)
            at 0xb7ddda0a in xmExecuteThread+0x15a (libjvm.so)
            at 0xb7dd62aa in threadStart+0x1a (libjvm.so)
            at 0xb7bc1433 in _start+0x2e3 (libhpi.so)
    .
    

Local fix

Problem summary

  • This crash was due to an assertion failure, while validating
    each of the references of a classblock.  When st_verify is
    enabled it makes a call to the ValidHandle(). This tries to
    validate the objects on the java heap by checking if the object
    is within the middleware
    heap, it is grained, and the alloc bit is set. If any of the
    condition are not met then the object is invalidated.
    If the object is a class block, then the references of the
    classblock are validated too. In the process of validation, the
    lclassname is found to be invalid, resulting in a sysassert.
    The class block which was being validated was going to be freed
    and already in the freeclass list and the cb was wrongly
    validated.
    

Problem conclusion

  • This defect will be fixed in:
    1.4.2 SR13 FP3
    .
    The code for verifyHandle(), not to validate a class which is
    already made as unreferenced.  This only affects the PD build.
    .
    To obtain the fix:
    Install build 20090902 or later
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM00573

  • Reported component name

    JAVA(1.3/1.4 CO

  • Reported component ID

    5648C9800

  • Reported release

    42A

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2009-11-06

  • Closed date

    2009-11-06

  • Last modified date

    2009-11-06

  • 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

    JAVA(1.3/1.4 CO

  • Fixed component ID

    5648C9800

Applicable component levels

  • R42A PSN

       UP

  • R42L PSN

       UP

  • R42W PSN

       UP

  • R420 PSN

       UP



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Document information


More support for:

z/OS family

Software version:

1.4.2

Reference #:

PM00573

Modified date:

2009-11-06

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