PI55828: WMQ: ABEND0C4 IN CSQPPGET

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The following program check occurs:
  
  ABN=0C4-00000011,U=SYSOPR,CSQPPGET,
  M=CSQGFRCV,LOC=CSQPLPLM.CSQPPGET
  
  The queue manager then abends with:
  
  CSQV086E QUEUE MANAGER ABNORMAL TERMINATION REASON=00D96001
  
  The failing instruction for the 0C4 is 5890 F014. Reg15 is bad.
  
  CSQIRRED (which has invoked CSQPPGET) has been passed an
  invalid-looking log-record during the restart processing for a
  URID.  CSQRRHSL is processing the shunted log records for the
  UR, and assumes that CSQRRRDT has manipulated the log-record to
  remove the shunt information. However, CSQRRRDT has not done
  this as LRHSHUNI is set.
  
  Additional Symptom(s) Search Keyword(s):
  ABEND0C4 ABENDS0C4 0C4 S0C4 S00C4
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 *
  *                 Release 0 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abend 0C4 in CSQPPGET during queue      *
  *                      manager startup, and resulting in       *
  *                      startup terminating abnormally with     *
  *                      REASON=00D96001.                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  During historic status rebuild, a shunted log record was passed
  to CSQRRRDT and CSQRRHSL. CSQRRRDT processed the log record so
  that it appeared as the original, unshunted log record and
  processed it.
  However when CSQRRHSL subsequently processed the log record it
  incorrectly accounted for the manipulation done by CSQRRRDT
  and passed an invalid logrecord for further processing.
  This can lead to unpredictable behaviour, including CSQPPGET
  being called with an invalid negative pageset identifier,
  resulting in it abending 0C4.
  

Problem conclusion

• CSQRRRDT and CSQRRHSL are changed to handle the manipulation of
  shunted log records correctly.
  
  CSQPPGET is changed to correctly validate the pageset parameter
  and abend 5C6-00D70121 if an invalid value is passed.
  000Y
  CSQIRRED
  CSQPPGET
  CSQRRHSL
  CSQRRRDT
  

Temporary fix

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

Comments

APAR Information

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

  PI54923

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

  UI35346

Modules/Macros

• CSQIRRED CSQPPGET CSQRRHSL CSQRRRDT
  

Fix information

• Fixed component name

  WMQ Z/OS 8

• Fixed component ID

  5655W9700

Applicable component levels

• R000 PSY UI35346

     UP16/03/03 P F603 ¢

Fix is available

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