IBM Support

IT07278: WEBSPHERE MQ ON WINDOWS: ACCESS VIOLATION REPROTED IN COM+ APPLICATION DURING DTC::ABORTREQUEST CALL.

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APAR status

  • Closed as program error.

Error description

  • When a COM+ application aborts the transaction, an access
    violation may be reported and the dllhost.exe process crashes.
    This generates a dump. Here is an example of stack:
    
    amqmtmgr.dll!CDtc::AbortRequest()
    msdtcprx.dll!CIEnlistmentAsynch::AbortRequestWrapper()
    msdtcprx.dll!CIEnlistmentAsynch::SetState()
    msdtcprx.dll!CIEnlistmentAsynch::SMD_ESTATE_ENLISTED()
    msdtcprx.dll!CIEnlistmentAsynch::StateMachineDriver()
    msdtcprx.dll!CIEnlistmentAsynch::Receive()
    msdtcprx.dll!CIConnSink::ReceivedUserMessage()
    msdtcprx.dll!CIConnSink::IncomingEvent()
    msdtcprx.dll!CConnectionObject::DeliverIncomingEvents()
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    MQ XA applications that uses MSDTC as the transaction manager.
    
    
    Platforms affected:
    Windows
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    A memory access violation error is reported while aborting a
    transaction following a MQRC_GLOBAL_UOW_CONFLICT error.
    
    The error MQRC_GLOBAL_UOW_CONFLICT is reported if the
    application starts a new transaction on a connection handle that
    is already part of another active transaction.
    

Problem conclusion

  • The memory access violation error is reported while accessing an
    invalid memory address. A check is introduced to validate the
    address before accessing it.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v7.0       7.0.1.14
    v7.1       7.1.0.7
    v7.5       7.5.0.6
    v8.0       8.0.0.3
    
    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

    IT07278

  • Reported component name

    WMQ WINDOWS V7

  • Reported component ID

    5724H7220

  • Reported release

    701

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-02-20

  • Closed date

    2015-04-30

  • Last modified date

    2015-04-30

  • 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

    WMQ WINDOWS V7

  • Fixed component ID

    5724H7220

Applicable component levels

  • R701 PSY

       UP

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Document Information

Modified date:
30 April 2015