PM78427; 7.0.0.27: deadlock in sip container code

Downloadable files


Abstract

Dead-lock in the SIP Container threads - Expiration Timer is invoked due to Application Session expiration and invalidation.

Download Description

PM78427 resolves the following problem:

ERROR DESCRIPTION:
Dead lock in Sip Container code.
"SIPThreadPool : 43" J9VMThread:0x53159200,
j9thread_t:0x49C93628,
java/lang/Thread:0x08325650, state:B, prio=5
(native thread ID:0xC5C, native priority:0x5, native
policy:UNKNOWN)
Java callstack:
at
com/ibm/ws/sip/container/servlets/WASXSipApplicationSessionImpl.
invalidate(WASXSipApplicationSessionImpl.java:102)
at
com/ibm/ws/sip/container/timer/AppSessionTimerListener.invokeExp
iredTimer(AppSessionTimerListener.java:226)
at
com/ibm/ws/sip/container/timer/ExpirationTimer.run(ExpirationTim
er.java:122(Compiled Code))
at
com/ibm/ws/sip/container/was/SignalingEndOfTask.run(SignalingEnd
OfTask.java:67(Compiled Code))

LOCAL FIX:
n/a

PROBLEM SUMMARY

USERS AFFECTED:
All IBM WebSphere Application Server Session Initiation Protocol (SIP) users

PROBLEM DESCRIPTION:
Dead-lock in the SIP Container threads - Expiration Timer is invoked due to Application Session expiration and invalidation.

RECOMMENDATION:
None

Expiration Timer invocation was synchronized on the same timer object.

PROBLEM CONCLUSION:
To prevent the dead-lock, the Expiration Timer invocation was synchronized on the SIP Application Session object.

The fix for this APAR is currently targeted for inclusion in fix packs 7.0.0.29, 8.0.0.6, and the fix pack following 8.5.0.2. Please refer to the Recommended Updates page for delivery information:
http://www.ibm.com/support/docview.wss?uid=swg27004980

Prerequisites

Please download the UpdateInstaller below to install this fix.

URL LANGUAGE SIZE(Bytes)
UpdateInstaller US English 7250000

Installation Instructions

Please review the readme.txt for detailed installation instructions.

URL LANGUAGE SIZE(Bytes)
Readme US English 7063

Download package

Download RELEASE DATE LANGUAGE SIZE(Bytes) Download Options
What is Fix Central (FC)?
7.0.0.25-WS-WAS-IFPM78427 10 Apr 2013 US English 12062 FC FTP
7.0.0.27-WS-WAS-IFPM78427 10 Apr 2013 US English 12061 FC FTP

Technical support

Contact IBM Support using SR (http://www.ibm.com/software/support/probsub.html), visit the WebSphere Application Server support web site (http://www.ibm.com/software/webservers/appserv/was/support/), or contact 1-800-IBM-SERV (U.S. only).

Problems (APARS) fixed
PM78427

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Document information


More support for:

WebSphere Application Server
SIP Container/SIP Proxy Server

Software version:

7.0.0.25, 7.0.0.27

Operating system(s):

HP-UX, Linux, Windows, z/OS

Software edition:

Base, Network Deployment

Reference #:

4034737

Modified date:

2013-04-14

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