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IV02326: GPF IN THE JIT DLL DURING JIT COMPILATION

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Error Message: A SIGSEGV/GPF is received.
    .
    Stack Trace: Relevant stack trace:
    #12 in TR_CHTable::cleanupNewlyExtendedInfo(TR_Compilation*) ()
    #13 in TR_CompilationInfoPerThreadBase::compile(J9VMThread*,
    TR_MethodToBeCompiled*, bool) ()
    #14 in protectedCompilationThreadProc(J9PortLibrary*,
    TR_CompilationInfoPerThread*) ()
    .
    

Local fix

  • The problem does not show if the user disables optimizations
    based on class hierarchy table
    -Xjit:disableCHOpts
    This solution is expected to slightly degrade throughput of
    applications
    Another workaround is to disable dynamic class unloading with
    -Xnoclassgc
    This solution may increase the memory footprint (possibly
    leading to OutOfMemory errors) if the application is relying
    heavily on dynamically generated classes that are subsequently
    unloaded.
    

Problem summary

  • The problem may appear when the JIT is doing some cleanup over
    the class hierarchy table (at the end of a compilation) and one
    of the classes from the class hierarchy table has been unloaded
    during the compilation.
    

Problem conclusion

  • This defect will be fixed in:
    6.0.0 SR10
    .
    The JIT has been modified to avoid accessing classes that have
    been unloaded (during the JIT compilation)
    .
    To obtain the fix:
    Install build 20110531 or later
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV02326

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-06-23

  • Closed date

    2011-06-23

  • Last modified date

    2011-06-23

  • 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

  • R600 PSY

       UP

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Document Information

Modified date:
23 June 2011