PI14138: WMQ 7 CSQX053E ERROR INFORMATION RECORDED IN CSQSNAP - XSTB STORAGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Channel Initiator Joblog shows a lot of the following messages:
  CSQX053E Error information recorded in CSQSNAP
  
  Eyecatcher of the snapdumps:
  *                ....XSTB Storage*
  * Problem........................*
  .
  *X...XFFSxcsFreeMem..............*
  *........MOVR......p...wqX...XINS*
  *................................*
  *................................*
  
  Problem occurs during message compression when it is found that
  a message cannot be compressed sufficiently (i.e. because the
  size of the compressed data is not more than 4 bytes less then
  the length of the uncompressed data).
  
  There is a problem with the releasing of the buffers during this
  processing (a new buffer is obtained by rriDecompress using
  cccGetBufferMem which allocates pooled storage, but
  internal_sort_out uses xcsFreeMem to release the buffer which
  issues the FFST as the pooled is not prefixed by an XSTB).
  

Local fix

• na
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ Version 7          *
  *                 Release 0 Modification 1 and                 *
  *                 Release 1 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Client applications connecting to MQ    *
  *                      using SVRCONN channels configured to    *
  *                      use message compression can experience  *
  *                      FFST SNAP dumps and error message       *
  *                      CSQX053E.                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  FFST SNAP dump issued by xcsFreeMem indicates that "XSTB Storage
  Problem" has happened. The problem is that xcsFreeMem is invoked
  to free a buffer not allocated by xcsGetMem.
  

Problem conclusion

• rriCompress (CSQXRCMP) has been updated to call the correct
  function to free the buffer allocated by cccGetBufferMem.
  010Y
  100Y
  CSQXRCMP
  

Temporary fix

Comments

APAR Information

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

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

  UI18107 UI18108

Modules/Macros

• CSQXRCMP
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R010 PSY UI18107

     UP14/06/28 P F406

• R100 PSY UI18108

     UP14/06/27 P F406

Fix is available

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