PM63592: ABEND 0C4 IN DFHSUEX AT OFFSET X'0A42'

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A task is running on an L8, when it attempts to perform
  ACQUIRE_PROGRAM.  This causes the task to switch to the RO TCB
  Upon encountering an Insufficient_storage_to_satisfy_request
  condition, the GLUE XMEOUT is invoked.  DFHSUEX is called to
  handle the exit and abends with an abend AKEX at offset X'0A42'
  The failing instruction is a load of Register8, while attempting
  to save the SM isolation_token.  Register8 was previously loaded
  with what was presumed to be the address of the CSA, but the
  task is still running under the RO TCB. This TCB has not primed
  AFCSA with the address of the CSA. Consequently, L8 is loaded
  with zeroes causing DFHSUEX to abend0C4.
  
  KIXREVPAD
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All.                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abend 0C4 in DFHSUEX.                   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A path exists within module DFHSUEX where it is possible to
  invoke a GLUE under a none application TCB. GLUEs must be
  invoked on an application TCB. In the reported problem, the
  GLUE was invoked under the RO TCB and access to the CSA was
  required. DFHSUEX obtained the CSA address from field AFCSA
  in the TCB but this RO TCB contained a CSA address of zeroes.
  When an attempt was made to use it, an 0C4 occurred.
  
  Keywords: S0C4 abendS0C4 abend0C4 DFHAP0001 msgDFHAP0001
            AP0001 Global User Exit
  

Problem conclusion

• DFHSUEX has been modified. If it detects it is on a none
  application TCB and is to drive a threadsafe GLUE, it will
  switch to the QR TCB.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

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

  UK80596

Modules/Macros

•    DFHSUEX  DFHUEH
  

Fix information

• Fixed component name

  CICS TS Z/OS V4

• Fixed component ID

  5655S9700

Applicable component levels

• R700 PSY UK80596

     UP12/08/08 P F208

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.