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PI94769: IBM MQ Z/OS V900: ABEND 5C6-00E7014F AND MESSAGE CSQX774E FOR AN LU62 CHANNEL

A fix is available

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APAR status

  • Closed as program error.

Error description

  • When an LU62 channel connects to a qmgr which has
    CHLAUTH(ENABLED) and a CHLAUTH rule with TYPE(ADDRESSMAP), the
    channel authentication code attempts to process the channel's
    LU62 connection name as an IP address. This results in an
    unexpected error in the parsing code, causing the abend
    5C6-00E7014F and message CSQX774E reporting all inbound
    channels being blocked.
    
    Below messages were displayed in CHIN joblog:
    11:08:39  +CSQX500I CSQ1 CSQXRCTL Channel CSQ1.CHL1 started
    11:09:56  +CSQX202E CSQ1 CSQXRCTL Connection or remote listener
    unavailable,
    11:09:56   channel CSQ1.CHL1
    11:09:56   connection conn_name(<ipaddr>)
    11:09:56   TRPTYPE=TCP RC=00000467 (ETIMEDOUT) reason=00000000
    11:09:56  +CSQX599E CSQ1 CSQXRCTL Channel CSQ1.CHL1 ended
    abnormally
    11:10:57  IEA794I SVC DUMP HAS CAPTURED:
    11:10:57  DUMPID=420 REQUESTED BY JOB (CSQ1CHIN)
    11:10:57  DUMP TITLE=CSQ1,ABN= 5C6-00E7014F
    ,LOC=CSQXADPM.CSQXADPM
    11:10:57  +CSQX772E CSQ1 CSQXRESP ???? failed, MQRC=2195
    (MQRC_UNEXPECTED_ERROR)
    11:11:00  +CSQX774E CSQ1 CSQXRESP CHLAUTH cache load failed, all
    inbound channels blocked
    .
    Additional keywords:
    ABEND5C6
    

Local fix

  • Disable QMGR CHLAUTH to avoid above abend and CSQX772E
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
    *                 Release 0 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: LU62 Channels will not start when       *
    *                      ADDRESSMAP ChlAuth rules are applied to *
    *                      them                                    *
    ****************************************************************
    When an ADDRESSMAP ChlAuth Rule is applied to an LU62 Channel to
    block an IP Address, the LU62 ChlAuth validation will fail
    preventing the channel from being started.
    

Problem conclusion

  • ChlAuth checks that include the use of IP Addresses have been
    stopped for channels of type 'LU62'.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI94769

  • Reported component name

    IBM MQ Z/OS V9

  • Reported component ID

    5655MQ900

  • Reported release

    000

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-03-07

  • Closed date

    2018-03-20

  • Last modified date

    2018-08-02

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

    PI88648

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

    UI54601

Modules/Macros

  • CMQXRMSA CMQXRSCF
    

Fix information

  • Fixed component name

    IBM MQ Z/OS V9

  • Fixed component ID

    5655MQ900

Applicable component levels

  • R000 PSY UI56541

       UP18/07/26 P F807 ¢

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

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Document Information

Modified date:
02 August 2018