IV07413: CRASH IN JAVA_LANG_J9VMINTERNALS_VERIFYIMPL() WITH INSTRUMENTATI ON AGENT

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Error Message: A SIGSEGV/GPF is received
    .
    Stack Trace: {java_lang_J9VMInternals_verifyImpl}
    <OSB>0x12a82e640<CSB>
    {java_lang_J9VMInternals_newInstanceImpl} <OSB>0x12a82ec00<CSB>
    {javaProtectedThreadProc} <OSB>0x12a82f1c0<CSB>
    {j9sig_protect} <OSB>0x12a82f250<CSB>
    {javaThreadProc} <OSB>0x12a82f610<CSB>
    {thread_wrapper} <OSB>0x12a82f690<CSB>
    {_pthread_body} <OSB>0x12a82f7a0<CSB>
    .
    

Local fix

  • The issue can be avoided by disabling the instrumentation agent
    which triggers the Hot Code Replacement
    

Problem summary

  • The problem is due to a race condition between the completion of
    class verification and the subsequent hot code replace of the
    same class by the instrumentation agent.  This causes an invalid
    address to be dereferenced in native code in
    java.lang.J9VMInternals.verifyImpl() while copying the static
    constant values
    

Problem conclusion

  • This defect will be fixed in:
    6.0.1 SR1
    6.0.0 SR10
    5.0.0 SR13
    .
    The JVM ensures it is operating on the "most recent" version of
    the class when updating static constant values.
    .
    To obtain the fix:
    Install build 20110909 or later
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV07413

  • Reported component name

    J9 COMMON CODE

  • Reported component ID

    620700127

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-09-08

  • Closed date

    2011-09-13

  • Last modified date

    2011-09-13

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    IV07414 PM57333

Fix information

  • Fixed component name

    J9 COMMON CODE

  • Fixed component ID

    620700127

Applicable component levels

  • R260 PSY

       UP

  • R600 PSY

       UP



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Document information


More support for:

Runtimes for Java Technology
Virtual Machine

Software version:

260

Reference #:

IV07413

Modified date:

2011-09-13

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