PI33955: SIP CONTAINER THROWS NULLPOINTEREXCEPTION WHEN INVALIDATING SIPAPPLICATIONSESSION

8.5.5.7: WebSphere Application Server V8.5.5 Fix Pack 7
8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21

APAR status

• Closed as program error.

Error description

• The SIP container throws the below NullPointerException when
  invalidating SipApplicationSession:
  
  java.lang.NullPointerException
  at com.ibm.ws.sip.container.tu.TransactionUserImpl
        .initializeDeriv edTU(TransactionUserImpl.java:586)
  at com.ibm.ws.sip.container.tu.TransactionUserWrapper
        .<init>(TransactionUserWrapper.java:323)
  at com.ibm.ws.sip.container.tu.TransactionUserWrapper
        .createDerivedTU(TransactionUserWrapper.java:2622)
  at com.ibm.ws.sip.container.servlets.OutgoingSipServletResponse
        .continueToSend(OutgoingSipServletResponse.java:271)
  at com.ibm.ws.sip.container.servlets.OutgoingSipServletResponse
        .send(OutgoingSipServletResponse.java:160)
  at com.ibm.ws.sip.container.tu.TransactionUserImpl
        .terminateUnderlyingProxyTransactions(
                                 TransactionUserImpl.java:1 266)
  at com.ibm.ws.sip.container.tu.TransactionUserImpl
  .terminateUnderlyingTransaction(TransactionUserImpl.java:1178)
  at com.ibm.ws.sip.container.tu.TransactionUserImpl
       .invalidateTU(TransactionUserImpl.java:1041)
  at com.ibm.ws.sip.container.tu.TransactionUserWrapper
       .invalidateTU(TransactionUserWrapper.java:1645)
  at com.ibm.ws.sip.container.servlets.SipApplicationSessionImpl
       .destroyAllSessions(SipApplicationSessionImpl.java:596)
  at com.ibm.ws.sip.container.servlets.SipApplicationSessionImpl
       .invalidate(SipApplicationSessionImpl.java:700)
  atcom.ibm.ws.sip.container.servlets.WASXSipApplicationSessionIm
  pl.invalidate(WASXSipApplicationSessi onImpl.java:129)
  at com.ibm.ws.sip.container.servlets.SipApplicationSessionImpl
       .readyToInvalidate(SipApplicationSessionImpl.java:2528)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server V8.5 Session Initiation Protocol     *
  *                  (SIP) container                             *
  ****************************************************************
  * PROBLEM DESCRIPTION: SIP Container was throwing a            *
  *                      NullPointerException when               *
  *                      invalidating SipApplicationSession      *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  SIP Container was throwing a NullPointerException when
  invalidating SipApplicationSession
  

Problem conclusion

• The fix is checking if a transaction isn't already invalidated
  before continuing with the invalidation process. This prevents
  the NullPointerExceptions.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 8.5.5.7.  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 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 APP S

• Fixed component ID

  5724J0800

Applicable component levels

• R850 PSY

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