APAR status
Closed as program error.
Error description
Occasionally the following failure occurs on MQDISC: | Major Errorcode :- STOP | | Minor Errorcode :- OK | | Probe Type :- HALT6109 | | Probe Severity :- 1 | | Probe Description :- AMQ6109: An internal WebSphere MQ error has occurred. | | FDCSequenceNumber :- 0 | | Arith1 :- 11 (0xb) | | Comment1 :- SIGSEGV: address not mapped(0x2d1c) | The function stack is as follows: MQM Function Stack MQDISC zstMQDISC zstMQCTLCommon zifQMgrInstruction zsqQMgrInstruction xcsFFST
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Users with a fastpath applications calling MQDISC may be affected. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: Occasionally an MQDISC call failed with FDC with probe ID XC130003 when another MQDISC call had already been made. A logic error meant that the second MQDISC call accessed a pointer to a control block, but that pointer could have already been cleared by the first MQDISC. This was observed in a Java JMS test application.
Problem conclusion
The MQ code has been changed to avoid the illegal null pointer access. The second MQDISC call now returns with the expected MQRC_HCONN_ERROR. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v8.0 8.0.0.14 v9.0 LTS 9.0.0.9 v9.1 CD 9.1.5 v9.1 LTS 9.1.0.5 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
IT30634
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
2019-10-17
Closed date
2020-01-13
Last modified date
2020-01-13
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:
13 January 2020