A fix is available
APAR status
Closed as program error.
Error description
Channel Initiator Joblog shows a lot of the following messages: CSQX053E Error information recorded in CSQSNAP Eyecatcher of the snapdumps: * ....XSTB Storage* * Problem........................* . *X...XFFSxcsFreeMem..............* *........MOVR......p...wqX...XINS* *................................* *................................* Problem occurs during message compression when it is found that a message cannot be compressed sufficiently (i.e. because the size of the compressed data is not more than 4 bytes less then the length of the uncompressed data). There is a problem with the releasing of the buffers during this processing (a new buffer is obtained by rriDecompress using cccGetBufferMem which allocates pooled storage, but internal_sort_out uses xcsFreeMem to release the buffer which issues the FFST as the pooled is not prefixed by an XSTB).
Local fix
na
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ Version 7 * * Release 0 Modification 1 and * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Client applications connecting to MQ * * using SVRCONN channels configured to * * use message compression can experience * * FFST SNAP dumps and error message * * CSQX053E. * **************************************************************** * RECOMMENDATION: * **************************************************************** FFST SNAP dump issued by xcsFreeMem indicates that "XSTB Storage Problem" has happened. The problem is that xcsFreeMem is invoked to free a buffer not allocated by xcsGetMem.
Problem conclusion
rriCompress (CSQXRCMP) has been updated to call the correct function to free the buffer allocated by cccGetBufferMem. 010Y 100Y CSQXRCMP
Temporary fix
Comments
APAR Information
APAR number
PI14138
Reported component name
WMQ Z/OS V7
Reported component ID
5655R3600
Reported release
018
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2014-03-21
Closed date
2014-05-19
Last modified date
2014-07-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI18107 UI18108
Modules/Macros
CSQXRCMP
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
Fix is available
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Document Information
Modified date:
01 July 2014