OA54276: ABEND0F4 RC24 RSN05070063 IN IGWBFMIB+05F4 @ UA83574

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Numerous ABEND0F4 RC24 RSN05070063 failures out of IGWBFMIB+05F4
  @ UA83574 following a S222 ABEND in a user address space that
  was in the process of reading from or writing to a PDSE data
  set.
  
  RSN05070063 translates to BDS_BMRB_DSRB_NOT_RELATED and the
  reason code was introduced by OA51421/OA51759. RSN05070063 are
  taken when processing in IGWBFMIB detects an improperly linked
  BMRB chain. These blocks are used when performing I/O PDSE data
  sets.
  
  
  ANALYSIS:
  Following the initial ABEND0F4 RC24 RSN05070063 failures other
  jobs and task incurred non-terminal ABEND0F4 RC24 RSN05070063
  failures. SYSLOG, LOGREC and JOBLOG recorded the failures,
  however; the associated jobs ran to completion.
  
  SYSTEM COMPLETION CODE=0F4  REASON CODE=00000024
  
   TIME=10.44.04  SEQ=04867  CPU=0000  ASID=0066
  
   PSW AT TIME OF ER
     NO ACTIVE MODULE FOUND - PRIMARY NOT EQUAL TO HOME
  
     NAME=UNKNOWN
  
     DATA AT PSW  0D972D46 - 906018F5  0A0D5020  D1904140
  
     AR/GR
  0: FFFFFFFF/00000000_05070063   1: 00000000/00000000_040F4000
  2: 00000000/00000000_7CC7C270   3: 00000000/00000000_7D9E4AC0
  4: 00000000/00000000_00FD47E0   5: 00000000/00000000_00000024
  6: 00000000/00000000_7C72A070   7: 00000000/00000000_7C72A258
  8: 00000000/00000000_00FD4850   9: 00000000/00000000_0D973888
  A: 00000000/00000000_05070063   B: 00000000/00000000_0D973799
  C: 00000000/00000000_8D97279A   D: 00000000/00000000_7C72A0C0
  E: 00000000/00000000_8D972D3E   F: 00000000/FFFFFFFF_00000024
  END OF SYMPTOM DUMP
  
  IEF142I T8PDSE STEPCHK - STEP WAS EXECUTED - COND CODE 0000
  
  
  VERIFICATION STEPS:
  Step to verify a symptom match:
  
  1.Dump titled:
  "COMPID=DF115,CSECT=IGWBFMIB05F4,DATE=01/10/17,MAINTID=UA83574,
  ABND=0F4,RC=00000024,RSN=05070063
  
  2. IPCS format the dump and run an IPCS VERBX IGWFPMAN
  'FUNCTION(Q)' command. Review the report for the string "Chain
  broken previous incorrect", this indicates a broken BMRB chain:
  ===============================================================
   Looking for SSF thread by Register 13:7C9390C0
  
  FVSA:7C935040 Asid:0009 SMSPDSE1 Fera@:7C935268 From(Reg13 at
  time of dump) FVSX_TOD:08/22/2017 01:38:24.483979
   FVSP:7C939070 IGWBFMIB <<<<<input FVSP
  
       BMF BDS FREE MMIB new try
       DSRB@:7D9E4AC0
       MMIB:7CC74200 MMIUSER:7CC7C270
       BMRB from the MMIUSER field
         BMRB:7CC7C270 IGWBMRB  Next:7CC7CDE0 Prev:00000000
  MMIB@:7CC74200 UCNT:155
       DSRB:7D9E4AC0 01-PRM20E-003722-000000000001-000000000001
                     R2SHWB.NDVPROD.CONLIB
                      BMRB_QUEUE(7CC7C210:7EBFA4B0)
         BMRB:7CC7C210 IGWBMRB  Next:7CC7C270 Prev:00000000
  MMIB@:7CC76200 UCNT:0
         BMRB:7CC7C270 IGWBMRB  Next:7CC7CDE0 Prev:00000000
  MMIB@:7CC74200 UCNT:155
         Chain broken previous incorrect
         BMRB:7CC7CDE0 IGWBMRB  Next:7CBAC360 Prev:7CC7C270
  MMIB@:07EFDF80 UCNT:2
  ===============================================================
  
  
  
  ADDITIONAL SYMPTOMS:
  Additional Symptoms:
  
  S0F4 RC00000024 05070063 RSN=05070063
  PDSE/Y
  

Local fix

• RECOVERY ACTION:
  Restart the SMSPDSE1 address space.
  
  IPL if the SMSPDSE1 address space is not activated
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All PDSE users.                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Performing a cancel of a task which is                       *
  * opening a PDSE may result in a                               *
  * corruption of an internal queue,                             *
  * leading to 0F4 RC24 RSN05070063 ABENDs                       *
  * in IGWBFMIB as a result of queue                             *
  * verification. These ABENDs will                              *
  * continue until the PDSE involved has                         *
  * been completely closed.                                      *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  See Problem Description.
  

Problem conclusion

• Added logic to correctly restore the internal queue when a
  cancel has been performed while in IGWBGMIB.
   KEYWORDS: PDSE/K
  

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:

  UA94996 UA94997 UA94998

Modules/Macros

• IGWBGMIB
  

Fix information

• Fixed component name

  EXTENDED DATA S

• Fixed component ID

  5695DF115

Applicable component levels

• R210 PSY UA94997

     UP18/02/06 P F802

• R220 PSY UA94998

     UP18/02/06 P F802

• R230 PSY UA94996

     UP18/02/06 P F802

Fix is available

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