PI09593: DUMP TITLE=CSQ1,ABN= 0C4-00000011,C=R3600.701.CHIN,M=CSQXDISP, LOC=CSQXRCTL.CSQXRCMP+01362 14/02/13 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• CHIN Log shows:
  11.33.00 +CSQX500I +CSQ1 CSQXRESP Channel MY.SVRCONN started
  11.33.18 IEA794I SVC DUMP HAS CAPTURED:
           DUMPID=005 REQUESTED BY JOB (CSQ1CHIN)
           DUMP TITLE=CSQ1,ABN= 0C4-00000011,C=R3600.701.CHIN,M=
           CSQXDISP, LOC=CSQXRCTL.CSQXRCMP+01362
  11.33.18 +CSQX112E +CSQ1 CSQXDISP Dispatcher process error,
           TCB=008B0D90, reason=0C4000-00000011
  11.33.18 +CSQX053E +CSQ1 CSQXFFST Error information recorded in
           CSQSNAP
  11.33.22 IEA794I SVC DUMP HAS CAPTURED:
           DUMPID=006 REQUESTED BY JOB (CSQ1CHIN)
           DUMP TITLE=CSQ1,ABN= 0C4-00000011,C=R3600.701.CHIN,
           M=CSQXDISP, LOC=CSQXRCTL.CSQXBPFR+004D4
  11.33.22 +CSQX112E +CSQ1 CSQXDISP Dispatcher process error,
           TCB=008B0D90, reason=0C4000-00000011
  11.33.22 +CSQX599E +CSQ1 CSQXRESP Channel My.SVRCONN ended
           abnormally
  11.33.33 IEA794I SVC DUMP HAS CAPTURED:
           DUMPID=007 REQUESTED BY JOB (CSQ1CHIN)
           DUMP TITLE=CSQ1,ABN= 0C4-00000010,C=R3600.701.CHIN,M=
           CSQXDISP, LOC=CSQXRCTL.CSQXBPQY+004D8
  11.33.33 +CSQX112E +CSQ1 CSQXDISP Dispatcher process error,
           TCB=008B0D90, reason=0C4000-00000010
  ===============================================================
  Dump shows
  TITLE: CSQ1,ABN=0C4-00000011,C=R3600.701.CHIN,
         M=CSQXDISP,LOC=CSQXRCTL.CSQXRCMP+01362
  .
  st faildata
  ===========
  SEARCH ARGUMENT ABSTRACT
  .
    RIDS/CSQXRCTL#L RIDS/#UNKNOWN AB/S00C4 PRCS/00000011
    REGS/06378 REGS/30306
  .
    Symptom             Description
    -------             -----------
    RIDS/CSQXRCTL#L     Load module name: CSQXRCTL
    RIDS/#UNKNOWN       Csect name: #UNKNOWN
    AB/S00C4            System abend code: 00C4
    PRCS/00000011       Abend reason code: 00000011
    REGS/06378          Register/PSW difference for R06: 378
    REGS/30306          Register/PSW difference for R03:-0306
  .
  The change team reviewed the doc and they can see that the 0C4
  occurs after applying the PTF for PM56506 when a SVRCONN is
  using compression and an MQGET returns MQRC 2033.
  .
  This is the same problem as fixed at V710 by PM67996.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 0 Modification 1.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abend 0C4 in CSQXRCMP when a client     *
  *                      application issues MQGET with a Version *
  *                      3 MQGMO using a channel with            *
  *                      COMPHDR(SYSTEM). Error message          *
  *                      'CSQX112E xxxx CSQXDISP Dispatcher      *
  *                       process error, TCB=xxxxxxxx reason=    *
  *                       0c4000-00000011' is issued to report   *
  *                      the error.                              *
  *                      This abend may cause the channel        *
  *                      initiator to terminate.                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When the channel initiator responds to an MQGET request it
  builds an MQGET segment containing the MQGMO to return.
  As the channel being used is configured for header compression
  rriCompress is called to compress the segment prior to
  transmitting it across the network.
  rriCompress incorrectly calculates the length of RLELength
  (length to encode) as FFFFFFF4 (i.e. -12 or a huge positive
  number). The reason for the incorrect length is that the TSH
  being compressed is an MQGET reply with a version 3 GMO.
  However, rriSizeofMQGMOSwap returned the length of a version 4
  GMO, which is 12 bytes longer.
  This large length causes an overlay of storage and an ABEND0C4
  in CSQXRCMP.
  An ABEND0C4 in CSQXBNT1 is another possible symptom due to
  rriCompress attempting to trace the GMO using the incorrect
  MQGMO length.
  Following the error, further instances of the channel may fail
  to connect to the channel initiator with reason MQRC 2537
  (MQRC_CHANNEL_NOT_AVAILABLE) until the channel initiator is
  restarted.
  
  Additional Keywords: 2186 MQRC_GMO_ERROR CSQXBPFR CSQXBPQY
  

Problem conclusion

• UK78367 UK80313 UK83468
  rriSizeOfMQGMOSwap is corrected to return the correct length of
  a version 3 MQGMO to rriCompress.
  010Y
  CMQXRSRV
  CSQXCCAX
  CSQXRCMP
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

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

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

  UI15409

Modules/Macros

• CMQXRSRV CSQXCCAX CSQXRCMP
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R010 PSY UI15409

     UP14/04/08 P F404 «

Fix is available

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