IBM Support

IV44117: JIT CRASHES WITH VMSTATE=0X0005FF0C ON ZEC12 WITH -XAGGRESSIVE

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APAR status

  • Closed as program error.

Error description

  • Error Message: A segmentation fault is raised in libj9jit26.so;
    the reported VM state is vmState=0x0005ff0c.
    This problem only occurs on a zEC12 with -Xaggressive enabled.
    .
    Stack Trace: #11 in
    generateS390LabelInstruction(TR_CodeGenerator*, TR_S390OpCodes,
    TR_Node*, TR_LabelSymbol*, TR_Instruction*)
    #12 in TR_S390PrivateLinkage::createEpilogue(TR_Instruction*)
    #13 in TR_S390CodeGenerator::doCodeGeneration()
    #14 in TR_CodeGenerator::generateCode()
    #15 in TR_Compilation::generateCode()
    #16 in TR_Compilation::compile()
    .
    

Local fix

  • Removing the -Xaggressive option works around the problem.
    

Problem summary

  • The crash is caused by a timing issue with branch preload
    optimization in the JIT compiler.
    

Problem conclusion

  • This defect will be fixed in:
    7.0.0 SR5
    .
    The JIT compiler has been updated with the fix to branch preload
    optimization.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV44117

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-06-11

  • Closed date

    2013-06-11

  • Last modified date

    2013-06-11

  • 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



Document information

More support for: Runtimes for Java Technology
Just In Time (JIT) Compiler

Software version: 260

Reference #: IV44117

Modified date: 11 June 2013