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IV12565: WEBSPHERE MQ CAN CAUSE A SIGSEGV WITHIN KPIMQPUT WITHIN AMQZLAA0 PROXY SUB TASK ON QUIESCED ENDMQM CAUSING A LONG SHUTDOWN TIME.

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APAR status

  • Closed as program error.

Error description

  • When quiescing the queue manager an FDC occurs:
    .
    Operating System  :- AIX 7.1
    LVLS              :- 7.0.1.6
    Probe Id          :- XC130004
    Component         :- xehExceptionHandler
    Program Name      :- amqzlaa0_nd
    Major Errorcode   :- STOP
    Probe Type        :- HALT6109
    Comment1          :- SIGSEGV: invalid address permissions(328)
    .
    MQM Function Stack
    zlaMainThread
    zlaProcessMessage
    zlaProcessMQIRequest
    zlaMQPUT
    zsqMQPUT
    kpiMQPUT
    xcsFFST
    .
    MQM Trace History
    .
    .
    ---{ zsqMQOPEN
    ---} zsqMQOPEN rc=MQRC_Q_MGR_QUIESCING
    --} zlaMQOPEN rc=MQRC_Q_MGR_QUIESCING
    .
    .
    -{ zlaProcessMQIRequest
    --{ zlaMQPUT
    ---{ zcpCreateMessage
    ---{ zsqMQPUT
    ----{ zsqSetKernelPutParams
    ----} zsqSetKernelPutParams rc=OK
    ----{ kpiMQPUT
    -----{ xcsFFST
    .
    Other FDC's that might be seen following above could be-
    Probe Id          :- ZL043050
    Component         :- zlaMainThread
    Major Errorcode   :- xecF_E_UNEXPECTED_RC
    Minor Errorcode   :- Unknown(A)
    Arith1            :- 10 (0xa)
    .
    MQM Function Stack
    zlaMainThread
    xcsFFST
    .
    Probe Id          :- ZL043105
    Component         :- zlaMainThread
    Major Errorcode   :- STOP
    Probe Type        :- HALT6109
    .
    Probe Id          :- ZL000128
    Component         :- zlaMain
    .
    The queue manager takes longer than normal to shutdown.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users of distributed publish/subscribe.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows)
    ****************************************************************
    PROBLEM SUMMARY:
    This was caused by the MQRC_Q_MGR_QUIESCING return code from an
    MQOPEN call being ignored by the distributed publish/subscribe
    proxy sub task.
    
    No checks were made on the queue object handle when MQPUT was
    called, causing the amqzlaa0 agent process to SIGSEGV.
    

Problem conclusion

  • If MQRC_Q_MGR_QUIESCING is returned from an MQOPEN call it will
    prevent the MQPUT call from being issued.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v7.0
    Platform           Fix Pack 7.0.1.8
    --------           --------------------
    Windows            U200335
    AIX                U845856
    HP-UX (PA-RISC)    U847965
    HP-UX (Itanium)    U847970
    Solaris (SPARC)    U847966
    Solaris (x86-64)   U847972
    iSeries            7.0.1.8
    Linux (x86)        U847967
    Linux (x86-64)     U847971
    Linux (zSeries)    U847968
    Linux (Power)      U847969
    
                       v7.1
    Platform           Fix Pack 7.1.0.1
    --------           --------------------
    Windows            7.1.0.1
    AIX                7.1.0.1
    HP-UX (Itanium)    7.1.0.1
    Solaris (SPARC)    7.1.0.1
    Solaris (x86-64)   7.1.0.1
    iSeries            7.1.0.1
    Linux (x86)        7.1.0.1
    Linux (x86-64)     7.1.0.1
    Linux (zSeries)    7.1.0.1
    Linux (Power)      7.1.0.1
    
    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

    IV12565

  • Reported component name

    WMQ AIX V7

  • Reported component ID

    5724H7221

  • Reported release

    701

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-12-23

  • Closed date

    2012-01-20

  • Last modified date

    2012-02-01

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

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

    PM56445

Fix information

  • Fixed component name

    WMQ AIX V7

  • Fixed component ID

    5724H7221

Applicable component levels

  • R701 PSY

       UP

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Document Information

Modified date:
01 February 2012