IBM Support

IV80394: CRASH DURING JIT COMPILATION IN JAVA 8 ON 64-BIT BIG ENDIAN POWE R LINUX

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APAR status

  • Closed as program error.

Error description

  • Error Message: Segmentation fault in JIT compilation threads in
    function TR_BlockSplitter::synergisticDepthCalculator(...).
    Crash is only possible on 64-bit Big Endian POWER Linux and only
    when running Java 8. The problematic functionality is not
    enabled in versions of Java prior to Java 8 and users will not
    experience this issue when using those versions.
    .
    Stack Trace: N/A
    .
    

Local fix

  • Define and set the following environment variable for the Java
    process: TR_DisableBlockSplitterSynergy=1. This workaround may
    have a very small performance penalty in some cases.
    

Problem summary

  • The problem is caused by a defect in the C++ compiler used to
    build the JIT compiler.
    

Problem conclusion

  • The JIT compiler source code has been modified to work around
    the C++ compiler defect.
    .
    This APAR will be fixed in the following Java Releases:
       8    SR2 FP10  (8.0.2.10)
       7    SR9 FP30  (7.0.9.30)
       6 R1 SR8 FP20  (6.1.8.20)
       7 R1 SR3 FP30  (7.1.3.30)
       6    SR16 FP20 (6.0.16.20)
    .
    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

    IV80394

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    130

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-01-15

  • Closed date

    2016-01-15

  • Last modified date

    2016-01-15

  • 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 #: IV80394

Modified date: 15 January 2016