APAR status
Closed as program error.
Error description
FDC reports a memory exception (SIGSEGV) after the file lock thread for a Multi-instance queue manager becomes unresponsive. FDCs report: Probe Id :- XC130003 Component :- xehExceptionHandler Program Name :- amqzxma0 Thread :- 12 FileLockMonitor Major Errorcode :- STOP Probe Type :- HALT6109 Probe Description :- AMQ6109: An internal WebSphere MQ error has occurred. Arith1 :- 11 (0xb) Comment1 :- SIGSEGV: address not mapped(0x8) MQM Function Stack zxcFileLockMonitorThread zxcInquireAndUpdateStatus xlsPostEvent xcsFFST Probe Id :- XC333101 Component :- xlsPostEvent Major Errorcode :- STOP Trace shows: ---{ xcsFFST ErrorCode :- 40406109 Numeric Insert1 :- 0000000b (11) Numeric Insert2 :- 00000000 (0) String Insert :- 'SIGSEGV: address not mapped(0x8)'
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Users of multi-instance queue managers may be affected by this issue. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: When using multi-instance queue managers, MQ uses a file lock monitor to check the health of the file system. If the queue manager is no longer responsive, if for example it loses a connection to a shared file system, then the queue manager is supposed to end. During this sequence of events an unexpected additional error condition occurred due to a queue manager resource being unavailable from the lock monitor thread. This unexpected additional error condition was reported by the Failure Data Capture (FDC) record above.
Problem conclusion
The IBM MQ code was corrected so that the necessary queue manager resource was available to the file lock monitor thread. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v8.0 8.0.0.9 v9.0 CD 9.0.5 v9.0 LTS 9.0.0.4 The latest available maintenance can be obtained from 'WebSphere MQ Recommended Fixes' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037 If the maintenance level is not yet available information on its planned availability can be found in 'WebSphere MQ Planned Maintenance Release Dates' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IT23673
Reported component name
IBM MQ BASE MP
Reported component ID
5724H7251
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-01-09
Closed date
2018-02-01
Last modified date
2018-02-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
IBM MQ BASE MP
Fixed component ID
5724H7251
Applicable component levels
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0.0.0","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
01 February 2018