[asterisk-bugs] [Asterisk 0015490]: [patch] mISDN rejects incoming calls (reopened)

Asterisk Bug Tracker noreply at bugs.digium.com
Thu Oct 1 18:21:20 CDT 2009


A NOTE has been added to this issue. 
====================================================================== 
https://issues.asterisk.org/view.php?id=15490 
====================================================================== 
Reported By:                slutec18
Assigned To:                rmudgett
====================================================================== 
Project:                    Asterisk
Issue ID:                   15490
Category:                   Channels/chan_misdn
Reproducibility:            sometimes
Severity:                   major
Priority:                   normal
Status:                     assigned
Asterisk Version:           1.4.25.1 
JIRA:                        
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
====================================================================== 
Date Submitted:             2009-07-13 04:04 CDT
Last Modified:              2009-10-01 18:21 CDT
====================================================================== 
Summary:                    [patch] mISDN rejects incoming calls (reopened)
Description: 
have a trixbox installation with a b800p with 6 ISDN lines configured in
PTP mode. The asterisk version is 1.4.25.1 and misdn 1.1.7
The system works well but I Sometimes, usually twice a week the system
gives me a dial out failure. That happens usually when pbx is under heavy
load
In this circumsance I can receive calls as before but I cannot perform
outbound calls.
The only solution is to reach the ssh console  in the system and give an
"mISDN restart", after that the system returns to normal operation and i
can perform outbound calls  again. 

The misdn log file reports a problem related to issue 
[asterisk-bugs] [Asterisk 0013488]: mISDN rejects incoming calls

but the asterisk changelog states that bug 13488 was fixed in 1.4.25.1
version

Fri Jul 10 17:09:25 2009: P[ 1]  **** Received CAUSE:44, so not cleaning
up channel 1
Fri Jul 10 17:09:25 2009: P[ 1]  **** This channel is now no longer
available,
please try to restart it with 'misdn send restart <port> <channel>'
Fri Jul 10 17:09:25 2009: P[ 1]  Sending Restarts on this port.
Fri Jul 10 17:09:25 2009: P[ 1]  Restarting and cleaning channel 1
Fri Jul 10 17:09:25 2009: P[ 1]  Restarting channel 1
Fri Jul 10 17:09:33 2009: P[ 1]  Requested Channel Already in Use
releasing this call with cause 34!!!!
Fri Jul 10 17:09:33 2009: P[ 1]  couldn't handle event
Fri Jul 10 17:09:33 2009: P[ 1]  CC_RELEASE_COMPLETE|CONFIRM [TE]
Fri Jul 10 17:09:46 2009: P[ 1]  Requested Channel Already in Use
releasing this call with cause 34!!!!
Fri Jul 10 17:09:46 2009: P[ 1]  couldn't handle event
Fri Jul 10 17:09:46 2009: P[ 1]  CC_RELEASE_COMPLETE|CONFIRM [TE]
Fri Jul 10 17:09:57 2009: P[ 1]  Requested Channel Already in Use
releasing this call with cause 34!!!!
Fri Jul 10 17:09:57 2009: P[ 1]  couldn't handle event
Fri Jul 10 17:09:57 2009: P[ 1]  CC_RELEASE_COMPLETE|CONFIRM [TE]
Fri Jul 10 17:10:43 2009: P[ 1]  Requested Channel Already in Use
releasing this call with cause 34!!!!
Fri Jul 10 17:10:43 2009: P[ 1]  couldn't handle event
Fri Jul 10 17:10:43 2009: P[ 1]  CC_RELEASE_COMPLETE|CONFIRM [TE]
Fri Jul 10 17:11:17 2009: P[ 1]  Requested Channel Already in Use
releasing this call with cause 34!!!!
Fri Jul 10 17:11:17 2009: P[ 1]  couldn't handle event
Fri Jul 10 17:11:17 2009: P[ 1]  CC_RELEASE_COMPLETE|CONFIRM [TE]
Fri Jul 10 17:12:59 2009: P[ 1]  Requested Channel Already in Use
releasing this call with cause 34!!!!
Fri Jul 10 17:12:59 2009: P[ 1]  couldn't handle event
Fri Jul 10 17:12:59 2009: P[ 1]  CC_RELEASE_COMPLETE|CONFIRM [TE]
Fri Jul 10 17:14:01 2009: P[ 1]  Requested Channel Already in Use
releasing this call with cause 34!!!!
Fri Jul 10 17:14:01 2009: P[ 1]  couldn't handle event
Fri Jul 10 17:14:01 2009: P[ 1]  CC_RELEASE_COMPLETE|CONFIRM [TE]
Fri Jul 10 17:14:29 2009: P[ 1]  Requested Channel Already in Use
releasing this call with cause 34!!!!
Fri Jul 10 17:14:29 2009: P[ 1]  couldn't handle event
Fri Jul 10 17:14:29 2009: P[ 1]  CC_RELEASE_COMPLETE|CONFIRM [TE]
Fri Jul 10 17:18:17 2009: P[ 0]  -- mISDN Channel Driver Registered --

I also checked the .c file to see if the patch reported in 13488 is
included. 
As expected I found the code regarding the patch.

Regards


======================================================================
Relationships       ID      Summary
----------------------------------------------------------------------
duplicate of        0013488 [patch] mISDN rejects incoming calls
related to          0015458 [patch] mISDN rejects calls - NO FREE C...
====================================================================== 

---------------------------------------------------------------------- 
 (0111765) svnbot (reporter) - 2009-10-01 18:21
 https://issues.asterisk.org/view.php?id=15490#c111765 
---------------------------------------------------------------------- 
Repository: asterisk
Revision: 221769

U   branches/1.4/channels/misdn/isdn_lib.c
U   branches/1.4/channels/misdn/isdn_lib_intern.h

------------------------------------------------------------------------
r221769 | rmudgett | 2009-10-01 18:21:19 -0500 (Thu, 01 Oct 2009) | 26
lines

Occasionally losing use of B channels in chan_misdn.

I have not been able to reproduce the problem of losing channels.
However, I have seen in the code a reentrancy problem that might give
these symptoms.

The reentrancy patch does several things:
1) Guards B channel and B channel structure allocation.
2) Makes the B channel structure find routines more precise in locating
records.
3) Never leave a B channel allocated if we received cause 44.

The last item may cause temporary outgoing call problems, but they should
clear when the line becomes idle.

(closes issue https://issues.asterisk.org/view.php?id=15490)
Reported by: slutec18
Patches:
      issue15490_channel_alloc_reentrancy.patch uploaded by rmudgett
(license 664)
Tested by: rmudgett, slutec18

(closes issue https://issues.asterisk.org/view.php?id=15458)
Reported by: FabienToune
Patches:
      issue15458_channel_alloc_reentrancy.patch uploaded by rmudgett
(license 664)
Tested by: FabienToune, rmudgett, slutec18

------------------------------------------------------------------------

http://svn.digium.com/view/asterisk?view=rev&revision=221769 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-10-01 18:21 svnbot         Checkin                                      
2009-10-01 18:21 svnbot         Note Added: 0111765                          
======================================================================




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