PH25190: WMQ FFST FOR XFFSRRIDECOMPRESS RETURNS RRCE_BUFFER_INVALID

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• During the process of decompressing a message which has been
  PUT, the uncompressed message fits exactly into the remaining
  space of its buffer, however the compressed data length was not
  divisible by 4 and so was later padded to a word boundary by
  the sender.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All Users of IBM MQ for z/OS Version 9       *
  *                 Release 1 Modification 0 and Release 2       *
  *                 Modification 0                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: FFST in rriDecompress, resulting in a   *
  *                      SVRCONN channel failing with            *
  *                      MQRC_CONNECTION_BROKEN.                 *
  *                                                              *
  *                      The FFST indicates that the failure is  *
  *                      due to RRCE_BUFFER_INVALID, however the *
  *                      buffer appeared to contain all of the   *
  *                      correct data.                           *
  ****************************************************************
  During the process of decompressing a message which has been
  PUT, the uncompressed message fit exactly into the remaining
  space of its buffer, however the compressed data length was not
  divisible by 4 and so was later padded to a word boundary by
  the sender.
  
  The decompressing procedure continued beyond the original
  message length, resulting in the FFST as the buffer was full.
  

Problem conclusion

• Processing has been amended to ensure that there is enough room
  to process any padding bytes that may have been added after
  message compression.
  

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:

  UI72920 UI72921

Modules/Macros

• CSQXRCMP
  

Fix information

• Fixed component name

  IBM MQ Z/OS V9

• Fixed component ID

  5655MQ900

Applicable component levels

• R100 PSY UI72920

     UP21/01/28 P F101

• R200 PSY UI72921

     UP21/01/28 P F101

Fix is available

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