OA56037: AFTER OA54595, ABENDS378 RC14 IN MODULE IAZAKSRV IN FSS ADDRESS SPACE 18/08/21 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• OA54595 introduced new function for JES to track storage areas
  it returns for various SSIs.  After this APAR is installed - if
  an SSI call (such as extended status SSI80) is driven under the
  initiator task of the address space (before the FSS jobstep
  tasks are even attached); then later once the FSS jobstep is
  attached and running an abend378-14 can occur in IAZAKSRV.
  
  ANALYSIS:
  As introduced by OA54595, JES common services will track storage
  areas returned by JES for various SSIs.  To manage/track these
  storage areas JES makes use of the cross memory owning TCB
  (ASCBXTCB).  If an SSI is driven under the initiator task
  early in the life of an FSS asid, it will be associated with
  a particular ASCBXTCB.  However, later when the FSS jobstep is
  attached and drives additional SSIs the ASCBXTCB may have
  changed.  When JES attempts to reference/manage the original SSI
  storage block we no longer reference the appropriate/original
  ASCBXTCB and encounter abend S378 RC14 when attempting a STORAGE
  RELEASE
  
  KNOWN IMPACT:
  FSS printers impacted.  Storage leak of FSVT and/or JESCB blocks
  
  VERIFICATION STEPS:
  1) OA54595 installed
  2) FSS address space encounters abend378-14 in IAZAKSRV
  3) Early in the lifespan of FSS address space, an SSI such as
  SSI80 was driven under initiator task
  
  PE INFORMATION:
  USERS AFFECTED:
  All users of HBB7790, HBB77A0, and HBB77B0 with OA54595 applied:
  
      FMID      PTF
      ----      ---
      HBB7790   UA96558
      HBB77A0   UA96556
      HBB77B0   UA96303
  
  USER IMPACT:
  APAR OA54595 delivered the new function it reported but
  introduced a new problem (abend378-14).
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All users of HBB7790, HBB77A0 and                            *
  * HBB77B0 with OA54595 applied.                                *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * ABENDS378-RC14 may occur in IAZAKSRV                         *
  * in FSS address space.                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  If a subsystem interface (SSI) call, such as extended status
  SSI 80, occurs very early under the initiator task of an
  address space, subsequently, when a functional subsystem
  (FSS) job step runs, an ABEND378-14 may occur in the IAZAKSRV
  (JES address keep services) module.
  

Problem conclusion

• TYPE/RESTART(NONE) IPL/REQUIRED(YES) CLPA(YES)
  
  CLPA is needed only if the IAZAKSRV module currently resides
  in the pageable link pack area (PLPA).
  
  The ABEND378-14 occurs under the indicated circumstances
  because IAZAKSRV specifies the wrong Task Control Block
  (TCB) when the module attempts to replace the Functional
  Subsystem Vector Table (FSVT) control block.
  
  IAZAKSRV has been modified to replace the FSVT, specifying
  the correct TCB, whenever changing jobstep TCBs make this
  necessary.
  

Temporary fix

• *** * TEMPORARY FIX MAY BE OBTAINED FROM DLL OR INFO/ACCESS ****
  ******************* OA56037  DECK AVAILABLE ********************
  

Comments

APAR Information

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

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

  UA97350 UA97351 UA97352

Modules/Macros

• IAZFSVT  IAZAKSRV
  

Fix information

• Fixed component name

  JES COMMON SVCS

• Fixed component ID

  5752SC141

Applicable component levels

• R790 PSY UA97352

     UP18/09/26 P F809 {

• R7A0 PSY UA97351

     UP18/09/26 P F809 {

• R7B0 PSY UA97350

     UP18/09/26 P F809 {

Fix is available

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