A fix is available
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 IBM MQ for z/OS Version 9 Release 0 * * 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: * * None * **************************************************************** 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.
Temporary fix
Comments
APAR Information
APAR number
PI77014
Reported component name
MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-02-22
Closed date
2017-02-27
Last modified date
2017-04-04
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI45063
Modules/Macros
CSQXADPO
Fix information
Fixed component name
MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
R000 PSY UI45063
UP17/03/30 P F703
Fix is available
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Document Information
Modified date:
04 April 2017