asterisk users - Jan 2006 - Asterisk hangs on 1.2.1

Anyone have any idea what's causing this or how to debug it?  I'm pretty
sure the root cause is with chan_sccp.so, but not sure how to prove it.

I recently upgraded from CVS-head to 1.2.1 and the chan_sccp from 
12-17-2005.  Now, once or twice a week, I get this on the console:

Jan 31 10:39:08 WARNING[10586]: channel.c:784 channel_find_locked: 
Avoided deadlock for '0xbf1013e0', 10 retries!

Once this happens, all of my sccp phones drop offline and attempt to 
register.  I get no sccp messages on the console.  There's really 
nothing on the console to indicate any sort of problem.  If I try to do 
an "unload chan_sccp.so" and then load it back, all of my SIP phones 
lose their registrations, none of my Zap channels work and I have to 
kill Asterisk and restart it.

Is this an Asterisk problem or an SCCP problem?  Help!!

Mark

Mark Johnson wrote:
> Anyone have any idea what's causing this or how to debug it?  I'm 
> pretty sure the root cause is with chan_sccp.so, but not sure how to 
> prove it.
>
> I recently upgraded from CVS-head to 1.2.1 and the chan_sccp from 
> 12-17-2005.  Now, once or twice a week, I get this on the console:
>
> Jan 31 10:39:08 WARNING[10586]: channel.c:784 channel_find_locked: 
> Avoided deadlock for '0xbf1013e0', 10 retries!
>
> Once this happens, all of my sccp phones drop offline and attempt to 
> register.  I get no sccp messages on the console.  There's really 
> nothing on the console to indicate any sort of problem.  If I try to 
> do an "unload chan_sccp.so" and then load it back, all of my SIP 
> phones lose their registrations, none of my Zap channels work and I 
> have to kill Asterisk and restart it.
>
> Is this an Asterisk problem or an SCCP problem?  Help!!
>
>
It did it to me again.  I enabled full logging and here's what I get.  
All the 7910's drop off line and try to reregister.  All SCCP messages 
on the CLI stop.  Anytime I try a "show channels" I get the Avoided 
deadlock message.  Here's what the logfile shows.  Any ideas?  And is 
there a way to fix the deadlock without restarting Asterisk?

Feb  1 09:10:33 WARNING[5327]: channel.c:784 channel_find_locked: 
Avoided deadlock for '0xbf002d10', 10 retries!

Feb  1 09:17:08 DEBUG[6606] channel.c: Avoiding deadlock for 
'SCCP/204-00000205'
Feb  1 09:17:08 DEBUG[6606] channel.c: Avoiding deadlock for 
'SCCP/204-00000205'
Feb  1 09:17:08 DEBUG[6606] channel.c: Avoiding deadlock for 
'SCCP/204-00000205'
Feb  1 09:17:08 DEBUG[6606] channel.c: Avoiding deadlock for 
'SCCP/204-00000205'
Feb  1 09:17:08 DEBUG[6606] channel.c: Avoiding deadlock for 
'SCCP/204-00000205'
Feb  1 09:17:08 DEBUG[6606] channel.c: Avoiding deadlock for 
'SCCP/204-00000205'
Feb  1 09:17:08 DEBUG[6606] channel.c: Avoiding deadlock for 
'SCCP/204-00000205'
Feb  1 09:17:08 DEBUG[6606] channel.c: Avoiding deadlock for 
'SCCP/204-00000205'
Feb  1 09:17:09 DEBUG[6606] channel.c: Avoiding deadlock for 
'SCCP/204-00000205'
Feb  1 09:17:09 DEBUG[6606] channel.c: Avoiding deadlock for 
'SCCP/204-00000205'
Feb  1 09:17:09 WARNING[6606] channel.c: Avoided deadlock for 
'0xbf002d10', 10 retries!

Might it be related to the memory leak bug? Upgrade to 1.2.4? (shot in the
dark, a brainstorm on my part is all)
>Here's what the logfile shows.  Any ideas?  And is 
>there a way to fix the deadlock without restarting Asterisk?
>
>Feb  1 09:10:33 WARNING[5327]: channel.c:784 channel_find_locked: 
>Avoided deadlock for '0xbf002d10', 10 retries!
>
>Feb  1 09:17:08 DEBUG[6606] channel.c: Avoiding deadlock for 
>'SCCP/204-00000205'

Sincerely,

Brent A. Torrenga
brent.torrenga@torrenga.com

Torrenga Engineering, Inc.
907 Ridge Road
Munster, Indiana 46321-1771

219.836.8918x325 Voice
219.836.1138 Facsimile
www.torrenga.com