PI71356: After SVC LOAD and DELETE of a COBOL v5+ NORENT program abend0C4in enclave termination

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The Migration Manual notes that an SVC LOAD and DELETE of a
  COBOL v5+ NORENT program is permitted, however at enclave
  termination the run-time attempts to access control blocks that
  were part of the now DELETEd executable, leading to an abend0c4.
  
  The COBOL legacy run-time is not affected.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Enterprise COBOL users running assembler     *
  *                 programs that do SVC delete to remove COBOL  *
  *                 V5+ NORENT programs.                         *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Runtime ABEND0C4: When an Enterprise    *
  *                      COBOL V5+ NORENT program is deleted     *
  *                      from storage by an SVC delete, the      *
  *                      application may fail with an 0C4 ABEND  *
  *                      during LE enclave termination.          *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: Apply the provided PTF                       *
  ****************************************************************
  When a COBOL NORENT program is deleted from storage by an SVC
  delete, LE is not notified to do the proper resource cleanup at
  the time of the delete. Subsequently during LE enclave
  termination, the COBOL runtime would attempt to cleanup
  resources used during the enclave execution, for example, to
  close any files that were left open. However, the NORENT
  storage containing relevant control blocks has already been
  released, resulting in access to those control blocks raising
  an 0C4 exception.
  

Problem conclusion

• The COBOL runtime has been corrected to protect against
  accesses to potentially unavailable storage.
  

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:

  UI42659 UI42660

Modules/Macros

• IGZCEV4  IGZLLIBV IGZXAPI  IGZXDMR  IGZXD24
  IGZXLPIO IGZXLPKA IGZXLPKB IGZXLPKC IGZXLPKD IGZXLPKE IGZXLPKF
  IGZXLPKG IGZXPK2
  

Fix information

• Fixed component name

  LE ENT COBOL LI

• Fixed component ID

  568819812

Applicable component levels

• R7A0 PSY UI42659

     UP16/11/26 P F611

• R790 PSY UI42660

     UP16/11/26 P F611

Fix is available

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