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PI23563: WMQ 7.1.0: ABEND 5C6-00A30052 CSQSLD1 .CSQSHFMN+000009F8

A fix is available

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APAR status

  • Closed as program error.

Error description

  • The following abend occurred:
    ABN=5C6-00A30052 M=CSQGFRCV,LOC=CSQSLD1 .CSQSHFMN+000009F8
    
    CSQMHDRS is not resetting fnewprops in the case where zrfParse
    does not locate any properties when browsing an RFH2 by
    an expiry task. Subsequent processing in CSQMHDRS detects that
    fnewprops is still set and releases the property block addressed
    by pProps. However, by this time pProps is now addressing the
    properties which is contained is the MMC_SEG_PROPS segment,
    and which is still in use.
    This leads to the 5C6-00A30052 abend issued by CSQSHFMN when
    the expiry task processes another message containing an RFH2.
    

Local fix

  • n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
    *                 Release 1 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: Abend 5C6-00A30052 may occur in         *
    *                      CSQMHDRS during expiry processing on    *
    *                      messages on a shared queue in the case  *
    *                      where messages have headers with and    *
    *                      without properties.                     *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    During expiry processing of a shared queue, CSQMHDRS is called
    to process the headers for the message. In the case where no
    properties are found in the headers, a flag remains set rather
    than be cleared. Later in processing in CSQMHDRS, processing
    attempts to free the property block based on this flag, however
    in this case this control block is addressing the properties
    in the MMC_SEG_PROPS segment. The attempt to free this block
    fails as the control block remains in use, resulting in the
    reported abend.
    

Problem conclusion

  • CSQMHDRS has been updated to correctly reset the flag during
    processing if no properties are found, which results in the
    control block not being incorrectly freed.
    100Y
    CSQMHDRS
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI23563

  • 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

    2014-08-12

  • Closed date

    2014-10-06

  • Last modified date

    2014-11-04

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    UI22001 PI27009

Modules/Macros

  • CSQMHDRS
    

Fix information

  • Fixed component name

    WMQ Z/OS V7

  • Fixed component ID

    5655R3600

Applicable component levels

  • R100 PSY UI22001

       UP14/10/17 P F410

Fix is available

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Document Information

Modified date:
04 November 2014