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IV78392: CRASH IN JIT LIBRARY WITH DIVIDE BY ZERO

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APAR status

  • Closed as program error.

Error description

  • Error Message: The JVM crashes in libj9jit26.so with the
    javacore indicating
    1XHEXCPCODE    J9Generic_Signal_Number: 00080020
    1XHEXCPCODE    Signal_Number: 00000008
    System corefile analysis shows the crash happened in
    TR_IProfiler::processProfilingBuffer with a divide by zero.
    .
    Stack Trace: 0x00007fc3c5498a09
    {libj9jit26.so}{_ZN12TR_IProfiler22processProfilingBufferEP10J9V
    MThreadPKhm} <OSB>0x7fc2a723d940<CSB>
    0x00007fc3c5490791 {libj9jit26.so}{jitHookBytecodeProfiling}
    <OSB>0x7fc2a723d950<CSB>
    0x00007fc3d062113f {libj9hookable26.so}{J9HookDispatch}
    <OSB>0x7fc2a723d9a0<CSB>
    0x00007fc3d0890607 {libj9vm26.so}{flushBytecodeProfilingData}
    <OSB>0x7fc2a723d9e0<CSB>
    0x00007fc3d085a34e
    {libj9vm26.so}{flushBytecodeProfilingDataHelper}
    <OSB>0x7fc2a723da30<CSB>
    .
    

Local fix

  • The problem can be avoided by using the option
    -Xjit:disableInterpreterProfilingThread
    

Problem summary

  • A 32 bit counter used during the processing of profiling data
    can potentially overflow leading to a divide by zero error.
    

Problem conclusion

  • The JVM has been updated to prevent the counter from
    overflowing.
    .
    This APAR will be fixed in the following Java Releases:
       7    SR9 FP30  (7.0.9.30)
       8    SR2 FP10  (8.0.2.10)
       7 R1 SR3 FP30  (7.1.3.30)
       6 R1 SR8 FP20  (6.1.8.20)
    .
    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

    IV78392

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-10-26

  • Closed date

    2015-10-26

  • Last modified date

    2015-12-01

  • 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

  • R130 PSY

       UP



Document information

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

Software version: 260

Reference #: IV78392

Modified date: 01 December 2015