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IT13683: Access violation error is reported while creating a subscriptionwith a wildcard.

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APAR status

  • Closed as program error.

Error description

  • Access violation error gets reported while creating a WebSphere
    MQ subscription with a wildcard. The following FDC is generated
    when the issue occurs:
    
    Product Long Name :- WebSphere MQ for Windows
    Probe Id          :- XC130031
    Component         :- xehExceptionHandler
    Process Name      :- D:\IBM\WebSphere MQ\bin\amqzlaa0.exe
    Addressing mode   :- 32-bit
    Major Errorcode   :- xecF_E_UNEXPECTED_SYSTEM_RC
    Probe Type        :- MSGAMQ6119
    Probe Description :- AMQ6109: An internal WebSphere MQ error has
    occurred.
    Comment1          :- Access Violation at address 16B02FFD when
    reading
    ...
    MQM Function Stack
    zlaMainThread
    zlaProcessMessage
    zlaProcessMQIRequest
    zlaMQSUB
    zsqMQSUB
    kpiMQSUB
    kqiSubscribeTopic
    kqiCreateSubscription
    kqiRegisterSubscriber
    kqiTopicRegisterSubscriber
    kqiTopicCalculateSubscriberLinks
    kqiTopicCalculateSubscriberLinks
    kqiTopicCalculateSubscriberLinks
    kqiTopicWildCardMatch
    kqiTopicPatternMatchT
    xcsFFST
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    All users using the MQ Publish Subscribe messaging feature and
    subscribing to topic strings that contains wild card characters.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    A logic error within the queue manager could cause a comparison
    operation to use an incorrect length when comparing 2 internal
    values while registering a subscriber. If the incorrect length
    caused the comparison to exceed the queue manager's allocated
    address space, an access violation error (on the Windows
    platform) or SIGSEGV (on UNIX platforms) was reported.
    

Problem conclusion

  • The affected routine within the MQ queue manager has been
    updated to correctly calculate the length for the comparison
    operation when registering a subscriber.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v7.5       7.5.0.8
    v8.0       8.0.0.6
    v9.0 CD    9.0.1
    v9.0 LTS   9.0.0.1
    
    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

    IT13683

  • Reported component name

    WEBSPHERE MQ 7.

  • Reported component ID

    5724H7240

  • Reported release

    750

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-02-09

  • Closed date

    2016-07-15

  • Last modified date

    2017-06-01

  • 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

    WEBSPHERE MQ 7.

  • Fixed component ID

    5724H7240

Applicable component levels

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSCPQ63","label":"APAR \/ Maintenance"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.5","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
01 June 2017