APAR status
Closed as program error.
Error description
One or more Failure Data Capture (FDC) records are generated reporting SIGSEGV, the FDC records show the following call history: O/S Call Stack for current thread /opt/mqm/lib64/libmqmcs_r.so(xcsPrintStackForCurrentThread+0x3e) [0x7f611ac4fe0e] /opt/mqm/lib64/libmqmcs_r.so(+0x11732d)[0x7f611ac6e32d] /opt/mqm/lib64/libmqmcs_r.so(PrepareDumpAreas+0xd14)[0x7f611ac69 3c4] /opt/mqm/lib64/libmqmcs_r.so(xcsFFSTFn+0x19e0)[0x7f611ac6bf30] /opt/mqm/lib64/libmqmcs_r.so(xehExceptionHandler+0x965)[0x7f611a c66c25] /lib64/libpthread.so.0(+0xf710)[0x7f61199e9710] /lib64/libc.so.6(+0x13370f)[0x7f611957570f] /opt/mqm/lib64/libmqdputl_r.so(dpcStrcat+0xc7)[0x7f611a9451c7] /opt/mqm/bin/mqdpcli[0x40ab0a] /opt/mqm/bin/mqdpcli[0x40c80c] /lib64/libc.so.6(__libc_start_main+0xfd)[0x7f6119460d7d] /opt/mqm/bin/mqdpcli[0x4036d9] MQM Function Stack CLI dpcCmd_runmqras dpcStrcat xcsFFST
Local fix
Problem summary
**************************************************************** USERS AFFECTED: This issue affects users of the IBM MQ Appliance who invoke the runmqras utility to capture diagnostic data. This issue is only seen in conjunction with an external error condition, such as a full filesystem, that prevents temporary directories being created during the execution of runmqras. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: A logic error within the wrapper utility which invokes the runmqras application on the IBM MQ Appliance failed to account for invalid return values when attempting to create a working directory for runmqras. If the attempt to create a temporary working directory failed, for example due to a full filesystem, then a null pointer was accessed, resulting in a SIGSEGV.
Problem conclusion
The runmqras wrapper utility on the IBM MQ Appliance has been updated to report a meaningful error if the attempt to create a temporary working directory fails, and to prevent the null pointer access. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v8.0 8.0.0.11 v9.1 CD 9.1.1 v9.1 LTS 9.1.0.1 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
IT25165
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
2018-05-25
Closed date
2018-08-22
Last modified date
2018-08-22
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:
22 August 2018