OA33230: EXECUTION OF AN SYSSMS CTRACE TO AN EXTERNAL WRITER IS FAILING *FINREVERSAL*

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The execution of an SYSSMS CTRACE with output to an external
  writer is failing with a loop in IGWFTREN code at the z/OS 1.10
  level. The loop occurs between offset 000F3E and 00F9C for a
  the module.
  
  ===========================================
  TRACE CT,ON,COMP=SYSSMS,PARM=CTISMSJC
  
  IEE252I MEMBER CTISMSJC FOUND IN SYS1.PARMLIB
  ITT038I ALL OF THE TRANSACTIONS REQUESTED VIA THE TRACE CT
          COMMAND WERE SUCCESSFULLY EXECUTED.
  
  IEE843I TRACE DISPLAY SYSTEM STATUS INFORMATION
          ST=(ON,0001M,00002M) AS=ON  BR=OFF EX=ON MO=OFF
          MT=(ON,024K)
          COMPONENT     MODE BUFFER HEAD SUBS
          -------------------------------------------------------
          SYSSMS        ON   0072K
          ASIDS      *NONE*
          JOBNAMES   IMSPE1MF,IMSPE1MI,IMSPE1MJ,IMSPE1M7
          OPTIONS    ENTRY,EXIT,COMP=(CDM,BMF)
          WRITER     CTWTR
  IEE178I AUTOMATIC RECOVERY IS IN PROGRESS
          NO OPERATOR ACTION IS REQUIRED.
          PROCESSOR (00) DETECTED AN EXCESSIVE DISABLED SPIN LOOP,
          WAITING FOR LOCK RELEASE FROM PROCESSOR (01).
          AUTOMATIC RECOVERY ACTION IS SPIN
  ======================================
  ADDITIONAL KEYWORD: PDSE/K
  

Local fix

• Change CTRACE processing to write to an internal trace buffer:
  
  TRACEOPTS
     ON
     JOBNAME(xxxxxxxx)
     OPTIONS('ENTRY','EXIT','COMP=(CDM,BMF)')
     BUFSIZE(64M)
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: USERS RUNNING CTRACE FOR PDSES.              *
  ****************************************************************
  * PROBLEM DESCRIPTION: EXECUTION OF AN SYSSMS CTRACE WITH      *
  *                      OUTPUT TO AN EXTERNAL WRITER FAILS WITH *
  *                      A LOOP IN IGWFTREN.  THIS HAS NOT BEEN  *
  *                      SEEN WHEN TRACING THE SMSPDSE(1)        *
  *                      ADDRESS SPACE BUT HAS OCCURRED WHEN     *
  *                      TRACING AN APPLICATION ADDRESS SPACE.   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  EXECUTION OF AN SYSSMS CTRACE WITH OUTPUT TO AN EXTERNAL WRITER
  FAILS WITH A LOOP IN IGWFTREN.
  

Problem conclusion

• CHANGED CODE TO NOT TRY TO EXPAND THE TRACE TABLE IF THE CALLER
  OF TRACE WAS DISABLED.  THE TRACE WILL BE SKIPPED.
  

Temporary fix

Comments

APAR Information

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

  OA30844

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

  UA55237 UA55238 UA55239 UA55240

Modules/Macros

• IGWFTREN
  

Fix information

• Fixed component name

  EXTENDED DATA S

• Fixed component ID

  5695DF115

Applicable component levels

• RA10 PSY UA55237

     UP10/08/18 P F008

• RB10 PSY UA55238

     UP10/08/18 P F008

• RC10 PSY UA55239

     UP10/08/18 P F008

• R190 PSY UA55240

     UP10/08/18 P F008

Fix is available

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