PI68968: WMQ V710 - ABENDEC6-0BF20050 ISSUED BY BPXPRSRB AS THE AIOECBPTRIS NOT VALID.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• An ABEND SEC6 0BF20050 is issued by BPXPRSRB as it detects that
  the ECB address (AioEcbPtr) to be posted does not match the
  ECB address (ArqUAioEcbPtr) saved from the Aiocb when the
  asyncio operation began.
  .
  Follow-on symptoms may include:
  ABEND5C6 reason 00E70026 in CSQXADPM
  ABEND402 with the POST PSW in CSQXADPC
  ABENDS5C6 5C6 S5C6 S05C6
  ABENDS402 402 S402 S0402
  CHIN CHINIT shutdown shut down hang hung
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 1 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abend EC6-0BF20050 is reported in       *
  *                      logrec when the queue manager is        *
  *                      stopped while multiplexed svrconn       *
  *                      channels are connected.                 *
  *                                                              *
  *                      This can be followed by additional      *
  *                      errors:                                 *
  *                      ABEND5C6 reason 00E70026 in CSQXADPM    *
  *                      ABEND402 with the POST PSW in CSQXADPC  *
  *                      Chinit shutdown hangs                   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A multiplexed svrconn channel was running, and the receive
  thread was waiting for data to arrive across the channel using
  asynchronous io. When the queue manager was stopped CSQXDSPT was
  called to post any outstanding MQXWAIT calls - this caused the
  receive thread to be resumed and return from CSQXADPO with
  RC=00000006 (MQEC_CONNECTION_QUIESCING). However the
  asynchronous io request was still outstanding - when this
  completed it attempted to post the specified ECB, however this
  was located using a pointer in CSQXADPO's working storage, which
  had been freed/reused, resulting in the EC6 abend occurring.
  

Problem conclusion

• CSQXADPO has been changed to cancel the outstanding receive
  request before exiting, when posted with
  MQEC_CONNECTION_QUIESCING.
  100Y
  CSQXADPO
  

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:

  PI69008 PI77014 UI45056

Modules/Macros

• CSQXADPO
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R100 PSY UI45056

     UP17/04/08 P F704

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.