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PM29235: NULL POINTER EXCEPTION IN SIP TIMER TASK EXPIRATION EVENT

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APAR status

  • Closed as program error.

Error description

  • When the SipTimer expiration event is fired at the same time the
    Session Initiation Protocol (SIP) Application Session is
    expired a race condition can cause a NullPointerException to
    be thrown.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All IBM WebSphere Application Server Feature*
    *                  Pack for Communications Enabled Applications*
    *                  (CEA) users                                 *
    ****************************************************************
    * PROBLEM DESCRIPTION: NullPointer Exception is being thrown   *
    *                      in a SIP timer task expiration event    *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When the SipTimer expiration event is fired at the same time the
    Sip Application Session is expired a race condition can lead to
    a Null Pointer Exception
    

Problem conclusion

  • The call to the SipApplicationSession invalidation and the
    call to the Sip Expiration timer are synchronized so the race
    condition can not happen any more.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 1.0.0.9. Please refer to the Recommended Updates page
    for delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM29235

  • Reported component name

    CEA FEATUREPACK

  • Reported component ID

    5724J0855

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2010-12-19

  • Closed date

    2011-01-05

  • Last modified date

    2011-01-05

  • 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

    CEA FEATUREPACK

  • Fixed component ID

    5724J0855

Applicable component levels

  • R700 PSY

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Document Information

Modified date:
09 February 2022