PM82026: ABEND S0C7, EIBTASKN OVERLAY OUT OF EYU9NXLM.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• If CPSM resource definitions are not successful in EYU9NXLM,
  control may return to CICS with incorrect data in the restored
  registers. This may lead to an S0C7 abend in another resource
  manager module later during CICS initialization.
  .
  Additional Keywords/Symptoms:
  DFHAP0001 DFHAP0707 EYUNX0102E EYUNX0103E EIBTASKN overlay
  EIB R14 NXLM_RETURN_TO_CICS
  KIXREVRJL
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICSPlex SM V3R2M0 Users                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: If CPSM resource definitions are not    *
  *                      successfully created at MAS agent       *
  *                      initialization by program EYU9NXLM,     *
  *                      control may return to CICS with         *
  *                      incorrect data in the restored          *
  *                      registers. This may lead to an S0C7     *
  *                      abend in another resource manager       *
  *                      program later during CICS               *
  *                      initialization.                         *
  *                                                              *
  *                      When this occurs, any combination of    *
  *                      the following messages can occur:       *
  *                                                              *
  *                        EYUNX0014E                            *
  *                        EYUNX0022E                            *
  ****************************************************************
  * RECOMMENDATION: After applying the PTF that resolves this    *
  *                 APAR, all MASes and WUI servers must be      *
  *                 restarted.  Note that the restarts do not    *
  *                 need to occur at the same time.              *
  ****************************************************************
  When MAS agent initialization starts in a MAS or WUI server,
  EYU9NXLM (NXLM) is called to build the CICS definitions required
  for the system to run as a MAS.
  
  If NXLM correctly builds the CICS definitions, it calls program
  EYU9NXSM (NXSM) to continue initialization.  Prior to calling
  NXSM, it saves general registers 12 (R12 - CICS EIB address) and
  13 (R13 - CICS EIS address).  Upon return from NXSM, it branches
  to a common exit routine, which restores the registers and then
  returns to CICS.
  
  If a problem occurs during the build of the CICS definitions,
  instead of calling NXSM, NXLM issues a combination of the
  messages listed above, and then branches to the common exit
  routine, where it restores R12 and R13, and returns to CICS.
  However, since NXSM was never called, the contents of R12 and
  R13 were never saved into the area they are restored from.
  This results in R12 and R13 not containing the CICS EIB and
  EIS addresses upon return to CICS, which can result in the
  documented error.
  

Problem conclusion

• NXLM has been updated to only restore R12 and R13 if it calls
  NXSM.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

  PM81896

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

  UK91669

Modules/Macros

•    EYU9NXLM
  

Fix information

• Fixed component name

  CICSTS V3 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R50M PSY UK91669

     UP13/02/20 P F302

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.