PK54818: THE SESSION INITIATION PROTOCOL (SIP) CONTAINER CONSUMES 100% CPU WHEN PROXYING A MESSAGE

Java SDK 1.5 SR8 Cumulative Fix for WebSphere Application Server
Java SDK 1.5 SR8 Cumulative Fix for WebSphere Application Server
Java SDK 1.5 SR10 Cumulative Fix for WebSphere Application Server
6.1.0.31: Java SDK 1.5 SR11 FP1 Cumulative Fix for WebSphere Application Server
6.1.0.33: Java SDK 1.5 SR12 FP1 Cumulative Fix for WebSphere
6.1.0.29: Java SDK 1.5 SR11 Cumulative Fix for WebSphere Application Server
6.1.0.35: Java SDK 1.5 SR12 FP2 Cumulative Fix for WebSphere
6.1.0.37: Java SDK 1.5 SR12 FP3 Cumulative Fix for WebSphere
6.1.0.39: Java SDK 1.5 SR12 FP4 Cumulative Fix for WebSphere Application Server
6.1.0.41: Java SDK 1.5 SR12 FP5 Cumulative Fix for WebSphere Application Server
6.1.0.43: Java SDK 1.5 SR13 Cumulative Fix for WebSphere Application Server
6.1.0.45: Java SDK 1.5 SR14 Cumulative Fix for WebSphere Application Server
6.1.0.47: WebSphere Application Server V6.1 Fix Pack 47
6.1.0.47: Java SDK 1.5 SR16 Cumulative Fix for WebSphere Application Server

APAR status

• Closed as program error.

Error description

• The scenario is simple:
  1. Install WebSphere Application Server 6.1.0.11 on any
     operating system
  2. Install a Session Initiation Protocol proxy application
  3. Configure the UAS to respond with a bad message,
     such as a message with a bad Date header
  4. Initiate one call from the UAC
  5. You will see that Application Server consumes 100% CPU
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: IBM Websphere Application Server version     *
  *                 6.1 Session Initiation Protocol (SIP) users  *
  ****************************************************************
  * PROBLEM DESCRIPTION: Infinite Loop in SIP Container          *
  *                      Proxying an Invalid Response            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The SIP Container enters an infinite loop when proxying a
  response message.
  

Problem conclusion

• Fix will prevent an infinite loop.
  This fix will be provided in IBM Websphere Application Server
  fix pack 6.1.0.15
  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:

Modules/Macros

• SIP
  

Fix information

• Fixed component name

  WEBSPH APP SERV

• Fixed component ID

  5724J0800

Applicable component levels

• R61A PSY

     UP

• R61H PSY

     UP

• R61I PSY

     UP

• R61P PSY

     UP

• R61S PSY

     UP

• R61W PSY

     UP

• R61Z PSY

     UP