OA44485: IEA412I SLIP TRAP ID=IBM, 1 SDUMPS NOT SCHEDULED. RETURN CODE=08, REASON CODE=02. DUMPSRV must be recycled.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Customer had an address space go through Memterm at the
  same time a dump was being taken of the address space.
  Messages are as follows:
  IEA794I SVC DUMP HAS CAPTURED: 170
          DUMPID=006 REQUESTED BY JOB (ITMTEMS )
          DUMP TITLE=ISSUER=IEFAB4ED,ERRCSECT=IEFAB4ER,
          COMPID=5752SC1B4,COMPON=DEVICE ALLOCATION-SUBCOMPONENT
          UNKNOWN
  IEF402I ITMTEMS  FAILED IN ADDRESS SPACE 02AE
          SYSTEM ABEND S40D - REASON CODE 10
  IEA611I PARTIAL DUMP ON test.system.D146.T020752.S00006
          DUMPID=006 REQUESTED BY JOB (ITMTEMS )
          FOR ASIDS(02AE,0016)
          INCIDENT TOKEN: SYSPLEX     01/26/2014 04:07:52
          SDRSN = 00000000 00200000 02000000 00000000
          SOME STORAGE COULD NOT BE DUMPED RC=4
          ERROR ID = SEQ01713 CPU00 ASID02AE TIME02.07.52.5
  From this point on - any DUMP command or SDUMP/SDUMPX macro will
  fail with RC=08 RSN=02 - System is unable to schedule a dump.
  SLIP traps will fail with IEA412I RETURN CODE=08 REASON CODE=02.
  
  DUMPSRV will remain serialized until a recycle of DUMPSRV is
  done with a CANCEL command.
   ANALYSIS:
      The partial dump shows that the dump included multiple asids
  
   in the RTCTASTB:
   SDAS  SDF4  SDF5
   02AE   F8    00
   0016   F8    00
   RTCTSDRM and RTCTSDTR are on for asid x'2AE' indicating that
   the DUMP task got posted and got control before the MEMTERM
   happened and IP VERBX IEAVTSFS shows that the dumping for
   local storage of asid x'2AE' never completed:
   Asid 02AE:
     Local storage start             01/26/2014 02:07:52.604029
     Local storage end               09/17/2042 21:53:47.370496
     Local storage capture time      19:45:54.766466
   A display of storage after the partial dump is complete
   shows the RTCTASTB incorrectly has the same two asids:
   SDAS  SDF4  SDF5
   02AE   D9    00
   0016   D9    02
   A display of CVTSDBF shows that dumpsrv is locked:  80BDA000
   There is a timing window such that:
     1.  IEAVTSDR is processing the memterm for asid x'2AE' and
         determines that the address space terminating is in the
         process of taking a dump so turns on RTCTSDDO for
         asid x'2AE' along with turning off RTCTSDAN and RTCTSDEN
     2.  At the same time, IEAVTSDT is finishing up the dump
         asid x'16' and checks to see if we are the last ASID in
         CHKLAST.  Since asid x'2AE' has RTCTSDDO on, RTCTSDLA
         is set to x'16' making it is the LASTASID.  IEAVTSCC
         issues IEA794I and tries to UNLOCK the dump in IEAVTSXS.
         Since RTCTCTSL has not been turned off - SXSUNLCK leaves
         the dump locked and returns to IEAVTSDT who completes.
     3.  IEAVTSDR finally gets to the point in ASID x'2AE' where
         it turns off RTCTCTSL and zeroes RTCTCTSA.   Since it is
         NOT the 'last asid', it does not attempt to unlock the
         dump.
   This window leaves the dump locked (i.e. CVTSDBF has the high
   order bit on) so any subsequent dump attempts will get 'system
   is unable to schedule a dump' .
   KNOWN IMPACT:
   Unable to obtain svc dumps.
   VERIFICATION STEPS:
   Verification Steps:
   1.  Find IEA412I SLIP TRAP ID=IBM, 1 SDUMPS NOT SCHEDULED.
       RETURN CODE=08, REASON CODE=02 in syslog or any evidence
       of a SDUMP/SDUMPX failing with RC=08 RSN=02
   2.  Look for last dump taken - should be indicated by
       IEA611I PARTIAL DUMP message.  The job/ASIDs involved
       in the dump will be indicated in the IEA611I message.
   3.  Look for IEF402I indicating that there was a failure
       in an address space.   If the asid number in the IEF402I
       matches the asid number in the IEA611I message then your
       problem is a match for this APAR.
   ADDITIONAL SYMPTOMS:
   iea402i
  

Local fix

• RECOVERY ACTION:
   Cancelling DUMPSRV "CANCEL DUMPSRV" will cause dump processing
   to unlock and DUMPSRV will automatically restart allowing you
   to take dumps again.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of SVC dumps                       *
  ****************************************************************
  * PROBLEM DESCRIPTION: MSGIEA794I SVC DUMP CAPTURED received   *
  *                      in proximity to MSGIEF402I jobname      *
  *                      FAILED IN ADDRESS SPACE # SYSTEM ABEND  *
  *                      S40D - REASON CODE 10                   *
  *                      and no more dumps being taken           *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The problem can occur when an address space goes through
  Memterm at the same time that a dump was being taken of the
  address space. SDUMP processing can remain locked, preventing
  any further dumps from being taken.
  The originating condition may be indicated by the close
  proximity of MSGIEA045I AN SVC DUMP HAS STARTED and MSGIEA794I
  SVC DUMP HAS CAPTURED with the indication that a MEMTERM has
  occurred, like MSGIEF402I jobname FAILED IN ADDRESS SPACE ####
  SYSTEM ABEND S40D - REASON CODE 10
  

Problem conclusion

• Correct SDUMP processing to remove, at earlier points in
  processing, the indication that IEAVTSDX will unlock, if its
  address space is being MEMTERMed.
  

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:

  UA74278 UA74279 UA74280

Modules/Macros

• IEAVTSDR
  

Fix information

• Fixed component name

  SDUMP/ABDUMP

• Fixed component ID

  5752SCDMP

Applicable component levels

• R770 PSY UA74278

     UP14/08/06 P F408

• R780 PSY UA74279

     UP14/08/06 P F408

• R790 PSY UA74280

     UP14/08/06 P F408

Fix is available

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