[asterisk-users] Asterisk SIP deadlocks - update_provisional_keepalive

[Duane Larson]

Thanks Jim.  Searched through the change log for "deadlock" but nothing
really stuck out.  I'll upgrade to 11.3 and see if that makes a difference.


On Thu, Apr 4, 2013 at 10:59 AM, Jim Lucas <lists at cmsws.com> wrote:

> On 04/03/2013 08:15 PM, Duane Larson wrote:
>
>> So it just happened again on both machines at the same time and I was
>> running debug on both servers.  I am running OpenSIPS and load balancing
>> between both servers so I am guessing when the invite was sent to the
>> first
>> server it was frozen for some reason and then OpenSIPS sent the invite to
>> the second server and that server was also frozen/deadlocked because of
>> the
>> SIP message.  I noticed on both servers the last log that was posted with
>> Asterisk deadlocked was the following
>>
>>
>> Asterisk version 11.0.1
>> [Apr  3 21:39:42] DEBUG[12984] res_timing_timerfd.c: Expected to
>> acknowledge 1 ticks but got 11805 instead
>>
>> Asterisk version 11.2.1
>> [Apr  3 21:39:50] DEBUG[1854] res_timing_timerfd.c: Expected to
>> acknowledge
>> 1 ticks but got 12423 instead
>>
>>
>> In my last email I posted the debug from the Asterisk server with 11.0.1
>> version of code.  Here is a post of the debug for the Asterisk server with
>> version 11.2.1
>>
>> http://pastebin.com/mbjSSAWM
>>
>>
>> This has to be a bug right?  I am thinking of opening an issue on the
>> Asterisk JIRA system
>>
>>
> A number of deadlocks were fixed in the current release of 11.3.  Please
> read the change log to see if any fit your issue.
>
> http://downloads.asterisk.org/**pub/telephony/asterisk/**
> ChangeLog-11-current<http://downloads.asterisk.org/pub/telephony/asterisk/ChangeLog-11-current>
>
>
>
>>
>> On Wed, Apr 3, 2013 at 4:45 PM, Duane Larson <duane.larson at gmail.com>
>> wrote:
>>
>>  It just happened again on the 11.0.1 box and I was able to grab a debug.
>>>   I am hoping someone can tell me if this is a bug or something wrong
>>> with
>>> my config.
>>>
>>> gdb asterisk-bin/sbin/asterisk 29048
>>>
>>> Go here for the debug output
>>> http://pastebin.com/DGXx0BSk
>>>
>>>
>>> On Tue, Apr 2, 2013 at 7:42 PM, Duane Larson <duane.larson at gmail.com
>>> >wrote:
>>>
>>>  I am currently running two different versions of Asterisk
>>>>
>>>> 11.0.1
>>>> 11.2.1
>>>>
>>>> I have noticed the bug occur on both servers.
>>>>
>>>> The issue is that when I try to dial a phone number sometimes the call
>>>> will never go out.  I will check the Asterisk server with NGREP and see
>>>> that the SIP messages are making it to Asterisk but Asterisk isn't
>>>> responding.
>>>>
>>>> I do the following command "netstat -nap |grep 5060" and see that
>>>> Asterisk has a lot under the "Recv-Q" column.
>>>>
>>>> It usually takes about 10 minutes before Asterisk becomes responsive
>>>> again or else before 10 minutes is up I could restart Asterisk and
>>>> everything will be back to normal.
>>>>
>>>> I see in the message logs the following errors
>>>>
>>>> On the 11.0.1 Asterisk server
>>>> WARNING[23723][C-00000010] chan_sip.c: Unable to cancel schedule ID
>>>> 11473.  This is probably a bug (chan_sip.c:
>>>> update_provisional_keepalive,
>>>> line 4406).
>>>>
>>>> On the 11.2.1 Asterisk server
>>>> WARNING[3493][C-0000001f] chan_sip.c: Unable to cancel schedule ID
>>>> 30810.
>>>>   This is probably a bug (chan_sip.c: update_provisional_keepalive, line
>>>> 4683).
>>>>
>>>>
>>>> When I look in chan_sip.c on both servers I see that they are the same
>>>> line of code
>>>>
>>>> AST_SCHED_DEL_UNREF(sched, pvt->provisional_keepalive_**sched_id,
>>>> dialog_unref(pvt, "when you delete the provisional_keepalive_sched_**id,
>>>> you
>>>> should dec the refcount for the stored dialog ptr"));
>>>>
>>>>
>>>>
>>>> What could be causing this because it seems to happen at least once a
>>>> day.
>>>>
>>>>
>>>
>>>
>>> --
>>> --
>>> *--*--*--*--*--*
>>> Duane
>>> *--*--*--*--*--*
>>> --
>>>
>>>
>>
>>
>>
>>
>> --
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>>
>
> --
> Jim Lucas
>
> http://www.cmsws.com/
> http://www.cmsws.com/examples/
>



-- 
--
*--*--*--*--*--*
Duane
*--*--*--*--*--*
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