PK48279: ABEND0C4 IN DFHSMMC2 +X'B70' WHEN HANDLING AN INQUIRE_TASK_STORAGE XPI CALL.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• DFHSMMC2 is processing an INQUIRE_TASK_STORAGE XPI call. We
  issue an INQUIRE_TRANSACTION_TOKEN call at offset x'B56' into
  DFHSMMC2, attempting to use REG8 as a parameter register for the
  XMIQ_RESPONSE. REG8 has not been set yet it is being used as the
  pointer into the XMIQ parameter list in refstep
  find_smx_for_current_task. REG8 points to the end of the
  subsequent page which is not accessable, causing an ABEND0C4 in
  DFHSMMC2 at +x'0B70'.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All.                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: DFHSM0001 An abend (code 0C4/AKEA) has  *
  *                      occurred at offset X'0B70' in module    *
  *                      DFHSMMC2.                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An abend 0C4 occurs in refstep find_smx_for_current_task in
  DFHSMMC2 after XPI call DFHSMMCX FUNCTION(INQUIRE_TASK_STORAGE)
  is issued from an XEIIN GLUE.  The abend occurs because the
  address of the xmiq parameter list in register 8 is undefined at
  the time of the ?DFHXMIQI FUNCTION(INQUIRE_TRANSACTION_TOKEN)
  call in refstep find_smx_for_current_task.  When CICS attempts
  to save the response from the
  ?DFHXMIQI FUNCTION(INQUIRE_TRANSACTION_TOKEN) using R8, if the
  page being accessed is not owned by CICS, an abend0c4 occurs.
  However, if the page is owned by CICS an invalid corruption of
  CICS storage will occur but will probably go unnoticed.
  A similar problem could happen for EXEC CICS INQUIRE STORAGE.
  
  Additional keywords: abendS0C4 abend0C4 S0C4 MSGDFHSM0001 SM0001
                       dfhxmiqi dfhxmiqm dfhxmiq_ptr xmiq_response
                       corruption corrupted X'01' X'02' 1 2
  

Problem conclusion

• DFHSMMC2 has been changed to assign the address of the xmiq
  parameter list to a pointer before the
  ?DFHXMIQI FUNCTION(INQUIRE_TRANSACTION_TOKEN) call.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

  PK43825

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

  UK27603

Modules/Macros

•    DESSMMC2 DFHSMMC2
  

Fix information

• Fixed component name

  CICSTS V3 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R500 PSY UK27603

     UP07/08/02 P F708

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.