A fix is available
APAR status
Closed as program error.
Error description
ABEND0C4 can occur in CSQXBPCS+008D2 if debug CSQXDBG DD card is present in the QMGR startup JCL.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Abend S0C4 may occur in CSQXBPCS when * * channel initiator is running with * * CSQXDBG DD card defined. * **************************************************************** * RECOMMENDATION: * **************************************************************** When running with the CSQXDBG DD card defined, the channel initiator will perform additional consistency checks against in-use and freed buffers. Should there be a problem with a buffer, the code to perform the consistency check assumes it can safely dereference all pointers. In some cases, these pointers may not be safe to dereference, and in attempting to do so, an S0C4 abend may occur.
Problem conclusion
Buffer check processing has been amended so that dereferences are performed under the protection of an ESTAE routine to prevent additional abends from occurring. In addition, the buffer check code now tracks when an FFST has been issued for a specific buffer/group and prevents the same FFST being reported multiple times. 100Y CMQXRSRV CSQXBPAL CSQXBPAQ CSQXBPCS CSQXCCMX CSQXCMEM CSQXRSTM CSQXTRTB CSQXTSTP HMS7100J
Temporary fix
Comments
APAR Information
APAR number
PI08664
Reported component name
WMQ Z/OS V7
Reported component ID
5655R3600
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2014-01-02
Closed date
2014-03-31
Last modified date
2014-05-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI16571
Modules/Macros
CMQXRSRV CSQXBPAL CSQXBPAQ CSQXBPCS CSQXCCMX CSQXCMEM CSQXRSTM CSQXTRTB CSQXTSTP HMS7100J
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
R100 PSY UI16571
UP14/04/23 P F404
Fix is available
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Document Information
Modified date:
02 May 2014