IBM Support

IT33961: TX series application fails with SIGSEGV in check_target when used with MQ

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APAR status

  • Closed as program error.

Error description

  • When TX Series application is used with MQ, it crashes with
    SIGSEGV in check_target function with the following stack :
    
    #0  0xf7d468d0 in check_target () from
    /opt/ibm/cics/lib/libcicsrt.so
    (gdb) #0  0xf7d468d0 in check_target () from
    /opt/ibm/cics/lib/libcicsrt.so
    #1  0xf5eca406 in UTF8PCMM () from /opt/mqm/lib/libmqmcs_r.so
    #2  0xf5ed4fb3 in xxxNewCodeConv () from
    /opt/mqm/lib/libmqmcs_r.so
    #3  0xf5ed64c8 in xcsConvertStringEx () from
    /opt/mqm/lib/libmqmcs_r.so
    #4  0xf5ed7393 in xcsConvertString () from
    /opt/mqm/lib/libmqmcs_r.so
    #5  0xf5ba88e1 in vxtConvertCharsFn () from
    /opt/mqm/lib/libmqxzu_r.so
    #6  0xf5b90fed in vwb_string () from /opt/mqm/lib/libmqxzu_r.so
    #7  0xf5ba7d37 in vwaConvert () from /opt/mqm/lib/libmqxzu_r.so
    #8  0xf5b8cec3 in vpiConvertData () from
    /opt/mqm/lib/libmqxzu_r.so
    #9  0xf6384dc7 in zstMQGET () from /opt/mqm/lib/libmqzi_r.so
    #10 0xf6369887 in MQGET_Server_Call () from
    /opt/mqm/lib/libmqzi_r.so
    #11 0xf636da59 in MQGET_COBOL () from /opt/mqm/lib/libmqzi_r.so
    #12 0xef01f3af in MQGET () from
    /var/cics_regions/TCICST1/bin/cicsprCOBOL
    #13 0x0827ffa2 in ?? ()
    #14 0xef01909d in PinCA_StartCobol ()
       from /var/cics_regions/TCICST1/bin/cicsprCOBOL
    #15 0xf7de4d73 in TasPR_CallApplication () from
    /opt/ibm/cics/lib/libcicsrt.so
    #16 0xf7de208d in TasPR_RunProgram () from
    /opt/ibm/cics/lib/libcicsrt.so
    #17 0xf7def973 in TasPR_IRun () from
    /opt/ibm/cics/lib/libcicsrt.so
    #18 0xf7e0440d in TasTA_Exec () from
    /opt/ibm/cics/lib/libcicsrt.so
    #19 0xf7e107e6 in TasTA_Run () from
    /opt/ibm/cics/lib/libcicsrt.so
    #20 0x0804b2f6 in main ()
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users using MQ with TX Series
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    The referenced check_target() function name was present within
    both TX series and MQ libraries that were currently loaded. This
    naming conflict within the application address space caused the
    call to fail with a SIGSEGV.
    

Problem conclusion

  • MQ code has been modified to resolve the naming conflict.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v9.1 LTS   9.1.0.9
    v9.2 LTS   9.2.0.3
    v9.x CD    9.2.4
    
    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

    IT33961

  • Reported component name

    IBM MQ BASE MP

  • Reported component ID

    5724H7271

  • Reported release

    910

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-08-20

  • Closed date

    2021-06-29

  • Last modified date

    2021-06-29

  • 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

    5724H7271

Applicable component levels

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU029","label":"Software"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"910"}]

Document Information

Modified date:
30 June 2021