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<a href="http://bamboo.asterisk.org/browse/ASTTRUNK-CENTOS55-I386/log" style="font-family: Arial, sans-serif; font-size: 15px; font-weight:bold; color:#000">ASTTRUNK-CENTOS55-I386-150</a>
<span style="font-family: Arial, sans-serif; font-size: 14px;"> has been queued, but there's no agent capable of building it.</span>
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<a href="http://bamboo.asterisk.org/browse/ASTTRUNK-CENTOS55-I386/log" style="text-decoration: none; font-family: Arial, sans-serif;text-align:left;font-size:16px;font-weight:bold;color:#036" >Code Changes</a>
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<a href="http://bamboo.asterisk.org/browse/author/jpeeler" style="font-family: Arial, sans-serif; font-size: 13px; font-weight:bold; color:#000">
jpeeler</a><br>
Merged revisions 301790 via svnmerge from <br/>
<a href="https://origsvn.digium.com/svn/asterisk/branches/1.8">https://origsvn.digium.com/svn/asterisk/branches/1.8</a><br/>
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........<br/>
r301790 | jpeeler | 2011-01-14 11:32:52 -0600 (Fri, 14 Jan 2011) | 42 lines<br/>
<br/>
Resolve deadlock involving REFER.<br/>
<br/>
Two fixes:<br/>
1) One must always have the private unlocked before calling<br/>
pbx_builtin_setvar_helper to not invalidate locking order since it locks the<br/>
channel.<br/>
2) Unlock the channel before calling pbx_find_extension, which starts and stops<br/>
autoservice during the lookup. The problem scenario as illustrated by the<br/>
reporter:<br/>
<br/>
Thread: do_monitor<br/>
-----------------------<br/>
handle_request_do<br/>
handle_incoming<br/>
handle_request_refer<br/>
ast_parking_ext_valid<br/>
pbx_find_extension<br/>
ast_autoservice_stop<br/>
while (chan_list_state == as_chan_list_state) { usleep(1000); }<br/>
<br/>
Thread: autoservice_run<br/>
-----------------------<br/>
autoservice_run<br/>
chan = ast_waitfor_n<br/>
ast_waitfor_nandfds<br/>
ast_waitfor_nandfds_classic / simple / complex (depending on your system)<br/>
ast_channel_lock(c[x]);<br/>
<br/>
handle_request_do and schedule_process_request_queue locks the owner<br/>
if it exists. The autoservice thread is waiting for the channel lock, which<br/>
wasn't ever released since the do_monitor thread was waiting for autoservice<br/>
operations to complete. Solved by unlocking the channel but keeping a reference<br/>
to guarantee safety.<br/>
<br/>
(closes issue #18403)<br/>
Reported by: jthurman<br/>
Patches: <br/>
20110103-blind_deadlock.diff uploaded by jthurman (license 614)<br/>
issue18403.patch uploaded by jpeeler (license 325)<br/>
Tested by: jthurman<br/>
........<br/>
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(301791)
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<a href="http://bamboo.asterisk.org/browse/author/lathama" style="font-family: Arial, sans-serif; font-size: 13px; font-weight:bold; color:#000">
lathama</a><br>
Add relationships to function documentation.<br/>
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(301846)
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<a href="http://bamboo.asterisk.org/browse/author/bbryant" style="font-family: Arial, sans-serif; font-size: 13px; font-weight:bold; color:#000">
bbryant</a><br>
Merged revisions 301845 via svnmerge from <br/>
<a href="https://origsvn.digium.com/svn/asterisk/branches/1.8">https://origsvn.digium.com/svn/asterisk/branches/1.8</a><br/>
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........<br/>
r301845 | bbryant | 2011-01-14 14:35:23 -0500 (Fri, 14 Jan 2011) | 9 lines<br/>
<br/>
Fix for a consistent MulticastRTP channel driver crash due to use of unitilized<br/>
data.<br/>
<br/>
(closes issue #18290)<br/>
(closes issue #18602)<br/>
Reported by: voipgate, wybecom<br/>
<br/>
Review: <a href="https://reviewboard.asterisk.org/r/1076/">https://reviewboard.asterisk.org/r/1076/</a><br/>
........<br/>
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(301847)
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<br/><a href="http://bamboo.asterisk.org/browse/ASTTRUNK-CENTOS55-I386/log" style="font-family: Arial, sans-serif; font-size: 13px; color:#036">5 more changes...</a>
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