IBM Support

IJ07589: ILLEGAL INSTRUCTION OR SEGMENTATION FAULT WHEN RUNNING WITH -XGC:CONCURRENTSCAVENGE

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APAR status

  • Closed as program error.

Error description

  • Error Message: The JVM crashes with an illegal instruction fault
    or segmentation fault in a method which uses an
    Unsafe.compareAndSwapObject or similar compare and swap method.
    .
    Stack Trace: N/A
    .
    This issue only happens when running with concurrent scavenge
    and compressed references are used.
    

Local fix

  • The issue can be worked around using the
    -Xjit:disableRecognizedMethods option. Note however that using
    this workaround will degrade performance of the JVM.
    

Problem summary

  • The problem is caused by faulty logic generating a read barrier
    under compressed references when running with concurrent
    scavenge.
    

Problem conclusion

  • The JIT has been updated to prevent the crash from happening.
    .
    This APAR will be fixed in the following Java Releases:
       8    SR5 FP20  (8.0.5.20)
    .
    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

    IJ07589

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    130

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-07-06

  • Closed date

    2018-07-06

  • Last modified date

    2018-07-06

  • 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

    JIT

  • Fixed component ID

    620700124

Applicable component levels

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSC9HBA","label":"Just In Time (JIT) Compiler"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"130","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
06 July 2018