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IV78431: JVM CRASHES IN THE JIT COMPILER

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APAR status

  • Closed as program error.

Error description

  • Error Message: A segmentation error is raised by the JIT
    compiler with vmstate=0x51eff.
    .
    Stack Trace: N/A
    .
    This problem is known to be very intermittent
    

Local fix

  • The JVM option -Xjit:disablePRE may be sufficient to stop the
    failure from occurring in some cases. This option is known to
    have a moderate impact on the performance of some workloads. No
    workaround is known to be completely effective at preventing all
    occurrences of this failure.
    

Problem summary

  • The problem was caused by a JVM runtime compiler optimization
    incorrectly handling one of the runtime safety checks of the
    Java programming language. The resolution check verifies that a
    symbolic class name resolves to a particular class that the JVM
    can identify. An internal JIT data structure associated with
    this check could be modified to an incorrect state, resulting in
    the crash.
    

Problem conclusion

  • The problematic optimization was corrected to ensure that this
    runtime safety check is correctly handled.
    .
    This APAR will be fixed in the following Java Releases:
       8    SR2       (8.0.2.0)
       7    SR9 FP20  (7.0.9.20)
       7 R1 SR3 FP20  (7.1.3.20)
       6 R1 SR8 FP15  (6.1.8.15)
       6    SR16 FP15 (6.0.16.15)
    .
    Contact your IBM Product's Service Team for these Service
    Refreshes and Fix Packs.
    For those running stand-alone, information about the available
    Service Refreshes and Fix Packs can be found at:
               https://www.ibm.com/developerworks/java/jdk/
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV78431

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    130

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-10-27

  • Closed date

    2015-10-27

  • Last modified date

    2015-10-27

  • 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

  • R130 PSY

       UP

  • R260 PSY

       UP

  • R600 PSY

       UP



Document information

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

Software version: 130

Reference #: IV78431

Modified date: 27 October 2015