PH03635: IBM MQ ABEND0C4 DURING CSQBBCMH CALL

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Change Team finds ABEND0C4 occurs in CSQBPAPI as it attempts to
  restore the state of the registers prior to returning to its
  caller. At the time of register reinstatement, however, the
  savearea register has been changed already, causing MQ to try to
  access storage that is part of unallocated storage. Root cause
  is due to incorrect code that was generated to restore register
  values at the end of CSQBPAPI.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
  *                 Release 0 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: CSQBPAPI ABEND 0C4 when processing a    *
  *                      message handle request.                 *
  ****************************************************************
  ABEND0C4 in CSQBPAPI as it attempts to restore the state of the
  registers prior to returning to its caller. At the time of
  register reinstatement, however, the savearea register has been
  changed already, causing MQ to try to access storage that is
  part of unallocated storage. Root cause is due to incorrect code
  that was generated to restore register values at the end of
  CSQBPAPI.
  

Problem conclusion

• CSQBPAPI has been updated to correctly restore the state of the
  registers prior to returning to its caller.
  

Temporary fix

Comments

• ×**** PE19/10/18 FIX IN ERROR. SEE APAR PH18283  FOR DESCRIPTION
  

APAR Information

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

  PI91780

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

  UI60306

Modules/Macros

• CSQBPAPI
  

Fix information

• Fixed component name

  IBM MQ Z/OS V9

• Fixed component ID

  5655MQ900

Applicable component levels

• R000 PSY UI60306

     UP19/01/26 P F901

Fix is available

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