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IV24740: Queue manager has memory exception when creating CHLAUTH records. FDC Probe IDs XC130004 or XC130031 are seen.

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • When attempting to add a correct CHLAUTH record, a queue
    manager agent process suffers a memory exception (example:
    SIGSEGV) and ends.
    
    Other connected applications using this agent process also end
    with a variety of errors, most likely MQRC_CONNECTION_BROKEN.
    
    The following FDCs might be seen:
    
    XC130004 xehExceptionHandler
    ZL043050 zlaMainThread        xecF_E_UNEXPECTED_RC
    ZL043105 zlaMainThread        STOP
    ZX005035 zxcProcessChildren   zrcX_AGENT_DEAD
    
    The xehExceptionHandler FDC will show a call stack similar to
    this:
    
    MQM Function Stack
    zlaMainThread
    zlaProcessMessage
    zlaProcessSPIRequest
    zlaSPIKernel
    zsqSPIKernel
    kpiGeneric
    kqiSetChlAuthMap
    rsxSetChlAuthMap
    rsiStoreChlPrf
    rsxSerialiseChlPrf
    xcsFFST
    
    On Windows the XC130004 might be XC130031.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users of CHLAUTH records when many CHLAUTH records are being
    added.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows)
    ****************************************************************
    PROBLEM SUMMARY:
    When adding many CHLAUTH records, sometimes it is necessary to
    re-allocate a memory block to hold more records. It was
    possible, when performing the re-allocating activity, for the
    queue manager code not to check that a pointer was null, but
    still address that pointer as though it was a valid pointer.
    Thus a memory exception was caused in the queue manager process.
    

Problem conclusion

  • The queue manager code has been corrected to check for the
    value of null in that pointer, and thus avoid addressing it
    when it is in that state.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v7.1
    Platform           Fix Pack 7.1.0.3
    --------           --------------------
    Windows            7.1.0.3
    AIX                7.1.0.3
    HP-UX (Itanium)    7.1.0.3
    Solaris (SPARC)    7.1.0.3
    Solaris (x86-64)   7.1.0.3
    iSeries            7.1.0.3
    Linux (x86)        7.1.0.3
    Linux (x86-64)     7.1.0.3
    Linux (zSeries)    7.1.0.3
    Linux (Power)      7.1.0.3
    
    Platform           v7.5
    --------           --------------------
    Multiplatforms     7.5.0.1
    
    The latest available maintenance can be obtained from
    'WebSphere MQ Recommended Fixes'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
    
    If the maintenance level is not yet available information on
    its planned availability can be found in 'WebSphere MQ
    Planned Maintenance Release Dates'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
    ---------------------------------------------------------------
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV24740

  • Reported component name

    WMQ LIN X86 V7

  • Reported component ID

    5724H7224

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-07-13

  • Closed date

    2012-11-12

  • Last modified date

    2013-03-25

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

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

    PM76926

Fix information

  • Fixed component name

    WMQ LIN X86 V7

  • Fixed component ID

    5724H7224

Applicable component levels

  • R710 PSY

       UP

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Document Information

Modified date:
09 March 2021