[asterisk-bugs] [Asterisk 0015340]: [patch] Deadlock when performing directed pickup

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=15340 
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Reported By:                lmsteffan
Assigned To:                tilghman
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Project:                    Asterisk
Issue ID:                   15340
Category:                   Channels/chan_sip/General
Reproducibility:            random
Severity:                   crash
Priority:                   normal
Status:                     assigned
Target Version:             1.4.27
Asterisk Version:           SVN 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases):  trunk 
SVN Revision (number only!): 200477 
Request Review:              
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Date Submitted:             2009-06-16 22:46 CDT
Last Modified:              2009-09-08 09:31 CDT
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Summary:                    [patch] Deadlock when performing directed pickup
Description: 
When a phone tries to pickup a ringing extension (through SIP INVITE with
Replace) there sometimes occurs a deadlock. The attached file contains a
snapshot of such a deadlock. Two threads have interlocked, each one waiting
on a lock already owned by the other (the first lock protects the channel
clonechan/chan, the other protects its sip_pvt part p/i)

The included patch assumes that it is necessary to unlock the sip_pvt
pointer before hanging up the channel to which it belongs. Can someone
confirm that ?
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 (0110308) lmadsen (administrator) - 2009-09-08 09:31
 https://issues.asterisk.org/view.php?id=15340#c110308 
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Assigned to Tilghman for review, and possible commit. I have this marked as
a possible blocker for 1.4.27. 

Issue History 
Date Modified    Username       Field                    Change               
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2009-09-08 09:31 lmadsen        Note Added: 0110308                          
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