[asterisk-bugs] [Asterisk 0012269]: [branch] Deadlock after Originate from AMI to Agent

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=12269 
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Reported By:                IgorG
Assigned To:                jpeeler
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Project:                    Asterisk
Issue ID:                   12269
Category:                   Channels/chan_agent
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     ready for testing
Asterisk Version:           SVN 
SVN Branch (only for SVN checkouts, not tarball releases):  trunk 
SVN Revision (number only!): 110444 
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             2008-03-21 03:15 CDT
Last Modified:              2008-10-20 08:32 CDT
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Summary:                    [branch] Deadlock after Originate from AMI to Agent
Description: 
I have discovered deadlock while using chan_agent and originate cal via
AMI. To reproduce need one agent and one registered phone. 

1) Login via AMI and make originate call
2) Answer a call both sides, talk and hangup phone.
3) After hangup MoH for agent doesn't starts and CLI show ERRORs:

    -- Started music on hold, class 'default', on SIP/104-08362618
[Mar 21 13:35:21] ERROR[8145]:
/usr/src/voip/asterisk-trunk/asterisk-trunk.patched-cng/include/aster:461
__ast_pthread_mutex_unlock: chan_agent.c line 843 (agent_hangup): attempted
unlock mutex '&p->app_lock' without owning it!
[Mar 21 13:35:21] ERROR[8145]:
/usr/src/voip/asterisk-trunk/asterisk-trunk.patched-cng/include/aster:463
__ast_pthread_mutex_unlock: chan_agent.c line 979 (agent_new):
'&p->app_lock' was locked here.
[Mar 21 13:35:21] ERROR[8145]:
/usr/src/voip/asterisk-trunk/asterisk-trunk.patched-cng/include/aster:486
__ast_pthread_mutex_unlock: chan_agent.c line 843 (agent_hangup): Error
releasing mutex: Operation not permitted

3) 'agent show online' still show called side in list

server-voip*CLI> agent show online
1001         (Vasya Pupkin) logged in on SIP/104-08362618 is idle
(musiconhold is 'default')
1 agents online>

3) After second try to Originage, originate fail and using CLI command
'agent show online' fail and make CLI frozen
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---------------------------------------------------------------------- 
 (0093968) denisgalvao (reporter) - 2008-10-20 08:32
 http://bugs.digium.com/view.php?id=12269#c93968 
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Something strange here.

After using this branch the deadlock has gone, but we are facing some
wrong behavior when showing the "show queues" output.

There is an Agent that is logged in, but not talking to anybody. Asterisk
give to me a wrong information about his state, the output show me (In Use)
but should be (Not in Use).

File wrong-output.txt uploaded with *cli output. 

Issue History 
Date Modified    Username       Field                    Change               
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2008-10-20 08:32 denisgalvao    Note Added: 0093968                          
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