IBM Support

IV07414: CRASH IN JAVA_LANG_J9VMINTERNALS_VERIFYIMPL() WITH INSTRUMENTATI ON AGENT

Subscribe

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

    IV07414

  • Reported component name

    JAVA 5 J9 COMMO

  • Reported component ID

    620500127

  • Reported release

    500

  • 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:

    IV07413

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

Fix information

  • Fixed component name

    JAVA 5 J9 COMMO

  • Fixed component ID

    620500127

Applicable component levels

  • R500 PSY

       UP

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSCVQ3W","label":"Virtual Machine"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.0","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
13 September 2011