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IV75119: JAVA JIT SAMPLING THREAD STACK-OVER-FLOW

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Error Message: SIGSEGV in the JIT Sampling Thread.
    .
    Stack Trace: 0x7f518fb2887d {libj9thr26.so}{thread_wrapper}
    <OSB>0x7f5194009fc0<CSB>
    0x7f519d5599d1 {libpthread.so.0}{start_thread}
    <OSB>0x7f519400c000<CSB>
    0x7f519da5bb6d {libc.so.6}{clone} <OSB>0x7f519400c140<CSB>
    .
    We have only observed this problem when using JNI to launch Java
    using JNI. It might be that this problem is only possible when
    using JNI to start java rather then using the java executable.
    

Local fix

  • N/A
    

Problem summary

  • The JIT used the VM default stack size when creating the JIT
    sampling thread (32kb). This is enough stack space for most
    cases but some operating systems can consume stack space for
    thread local storage which (in extreme cases) can leave
    insufficient space for stack frames.
    

Problem conclusion

  • The JIT was changed to use the default "OS" stack size defined
    by the VM rather then allowing the VM to use a hard-coded
    default size of 32kb.
    .
    This APAR will be fixed in the following Java Releases:
       7    SR9 FP20  (7.0.9.20)
       6 R1 SR8 FP15  (6.1.8.15)
    .
    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

    IV75119

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-07-14

  • Closed date

    2015-08-26

  • Last modified date

    2015-08-26

  • 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

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Document Information

Modified date:
26 August 2015