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Summary:ASTERISK-11552: [patch] asterisk crash at reload chan_misdn.so
Reporter:Abhay Gupta (agupta)Labels:
Date Opened:2008-03-01 04:46:03.000-0600Date Closed:2009-08-17 11:53:13
Priority:CriticalRegression?No
Status:Closed/CompleteComponents:Channels/chan_misdn
Versions:Frequency of
Occurrence
Related
Issues:
Environment:Attachments:( 0) another_bt_full.txt
( 1) bt_full_chan_msidn.txt
( 2) bug12113.patch
Description:Program terminated with signal 11, Segmentation fault.
#0  0x08072612 in __ast_free_region (ptr=0x89ed6d8, file=0x813f573 "indications.c", lineno=438, func=0x813f7b7 "free_zone")
   at astmm.c:152
152             for (reg = regions[hash]; reg; reg = reg->next) {

BT full is attached .

****** ADDITIONAL INFORMATION ******

This 1.4.18 is patched with the current updates including that of autoservice.c
Comments:By: Abhay Gupta (agupta) 2008-03-01 04:50:27.000-0600

MISDN version  is 1_1_7_2
By: Abhay Gupta (agupta) 2008-03-01 04:58:21.000-0600

These are the messages in /var/log/messages

[root@dellterisk1 ~]# tail  /var/log/messages
Mar  1 12:42:25 dellterisk1 kernel: l2 D-channel addr:40000101 frame wrong EA0/E
A1
Mar  1 13:13:59 dellterisk1 kernel: mISDN: INTERNAL ERROR in /usr/src/mISDN-1_1_
7_2/drivers/isdn/hardware/mISDN/stack.c:978 register duplicate 50130100 f4a67600
f4a67600
Mar  1 13:13:59 dellterisk1 kernel: mISDN: INTERNAL ERROR in /usr/src/mISDN-1_1_
7_2/drivers/isdn/hardware/mISDN/stack.c:1152
Mar  1 13:13:59 dellterisk1 kernel: mISDNd: addr(f0000) prim(f1980) failed err(-
22)
Mar  1 13:15:25 dellterisk1 kernel:
Mar  1 13:16:29 dellterisk1 kernel:
Mar  1 13:17:35 dellterisk1 last message repeated 6 times
Mar  1 13:18:07 dellterisk1 last message repeated 2 times
Mar  1 15:22:17 dellterisk1 kernel: l2mgr: addr:40000101 prim 23082 J
Mar  1 15:22:21 dellterisk1 kernel: We got Message with Invalid Callref
By: Abhay Gupta (agupta) 2008-03-03 02:55:49.000-0600

P[ 1] $$$ Set StackIND Err: -1 No space left on device
   -- mISDN/5-u687 is ringing
P[ 1] bchannel_activate: Stack not found ![Mar  3 10:43:53] WARNING[28945]: chan_misdn.c:5654 chan_misdn_log: cb_log called with out-of-range port number! (-1366422693)
[Mar  3 10:43:53] WARNING[28945]: chan_misdn.c:5666 chan_misdn_log: lib Got Prim: Addr 42000102 prim 30282 dinfo 300cd
[Mar  3 10:43:53] WARNING[28945]: chan_misdn.c:5654 chan_misdn_log: cb_log called with out-of-range port number! (-1366422693)
[Mar  3 10:43:53] WARNING[28945]: chan_misdn.c:5666 chan_misdn_log: Freeing Msg on prim:30282
   -- mISDN/18-u689 is proceeding passing it to SIP/114-0899b200
P[ 0] Unhandled Message: prim 30282 len 116 from addr 42000102, dinfo 300ce on this port.
P[ 0] Unhandled Message: prim 34582 len 119 from addr 42000102, dinfo 300cd on this port.
[Mar  3 10:43:53] WARNING[780]: chan_misdn.c:5654 chan_misdn_log: cb_log called with out-of-range port number! (-1686445422)
[Mar  3 10:43:53] WARNING[780]: chan_misdn.c:5666 chan_misdn_log: Sending :160 bytes 2 MISDN
dellterisk1*CLI>
Disconnected from Asterisk server
[root@dellterisk1 ~]# /usr/sbin/safe_asterisk: line 111: 28915 Segmentation fault      (core dumped) nice -n $PRIORITY ${ASTSBINDIR}/asterisk ${CLIARGS} ${ASTARGS} >&/dev/${TTY} </dev/${TTY}
Asterisk ended with exit status 139
Asterisk exited on signal 11.
By: Jason Parker (jparker) 2008-03-04 18:33:01.000-0600

That "No space left on device" error looks scary.  Make sure you aren't out of disk space or something..
By: Abhay Gupta (agupta) 2008-03-07 02:28:39.000-0600

There is 9GB of HDD space left on harddisk . So it is certainly not a issue of free space of HDD . Also the entire install of OS and ASterisk is in a single partition .
By: Abhay Gupta (agupta) 2008-03-13 12:23:36

Is somebody to help on these misdn issues ?
By: crich (crich) 2008-04-17 16:19:42

sorry to have let you wait for so long. This internal Error Thing happens, when chan_misdn tries to reallocate a Bchannel Stack from mISDN, which was previously allocated.

This often happens, when asterisk crashes and restarts fastly (there might be coredumps which are dated shortly before this Internal Error) then mISDN might remember previously activated B-Channels.

When Asterisk is now started again, it thinks every channel is free and it just tries to get the next channel, this causes the Internal error.

This scenario is the most common scenario to produce the Internal error, so the point is to remove the crash of asterisk, or in case of a crash to re-initialize the mISDN modules (reloading them).

a short glimpse of your backtraces show very strange locatoins for a crash. what kind of distro/ compiler are you using?

I saw the first crash once on a Suse System. A switch to debian, without touching the configs fixed the problem.
By: Abhay Gupta (agupta) 2008-04-17 20:27:23

Thanks for your response crich . The OS used is RHEL4 and we are using gcc compiler with safe_asterisk script . There is always a possibility of asterisk crashing and surely will restart very fast .

We have seen that we are mostly having this problem when we are trying to have more channels being attempted at times . Means that we have 30 B channels , there are times when we have say 32 people trying to access and dial numbers . This problems comes very frequently then .

We are not seeing the problem with ZAP channel though on our other servers .
By: Abhay Gupta (agupta) 2008-04-17 20:33:53

I Forgot to mention one thing , here in this bug it was specific that only on reload on asterisk CLI this problem was coming .
By: Enrique Medrano (barboles) 2008-07-31 04:37:35

Hello, I have the same problem:

mISDN: INTERNAL ERROR in /root/build/mISDN-OCT/work/src/mISDN-1_1_8-OCT/drivers/isdn/hardware/mISDN/stack.c:985 register duplicate 50020100 e5e21200 e5e21200
Jul 30 19:37:52 PBX-01 kernel: mISDN: INTERNAL ERROR in /root/build/mISDN-OCT/work/src/mISDN-1_1_8-OCT/drivers/isdn/hardware/mISDN/stack.c:1164
Jul 30 19:37:52 PBX-01 kernel: mISDNd: addr(f0000) prim(f1980) failed err(-22)

Anyone knows the solution?
By: Jeff Peeler (jpeeler) 2009-08-12 13:55:05

This bug appears to be complicated by the usage of safe_asterisk and possibly crashing before the given backtraces occurred. The only way I could get a crash was to specify more ports than were configured and then try reloading the module. Attached is the patch that solves this problem. If the issue is still not fixed, providing your misdn.conf file will be necessary. I'm using mISDN 1.1.9.1 as building the older releases require patching for modern kernels.
By: Jeff Peeler (jpeeler) 2009-08-17 11:33:07

I'm going to go ahead and close this. Please open a new report if there continues to be any problems.
By: Digium Subversion (svnbot) 2009-08-17 11:35:26

Repository: asterisk
Revision: 212498

U   branches/1.4/channels/misdn_config.c

------------------------------------------------------------------------
r212498 | jpeeler | 2009-08-17 11:35:25 -0500 (Mon, 17 Aug 2009) | 12 lines

Fix segfault when reloading chan_misdn.

If more ports were specified than configured in misdn.conf a reload would crash
asterisk. The problem was the unconfigured port was using data from the
previously configured port. When the data for an unconfigured port was freed a
crash would result from the double free.

(closes issue ASTERISK-11552)
Reported by: agupta
Patches:
     bug12113.patch uploaded by jpeeler (license 325)

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

http://svn.digium.com/view/asterisk?view=rev&revision=212498
By: Digium Subversion (svnbot) 2009-08-17 11:51:14

Repository: asterisk
Revision: 212506

_U  trunk/
U   trunk/channels/misdn_config.c

------------------------------------------------------------------------
r212506 | jpeeler | 2009-08-17 11:51:14 -0500 (Mon, 17 Aug 2009) | 19 lines

Merged revisions 212498 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

........
 r212498 | jpeeler | 2009-08-17 11:34:56 -0500 (Mon, 17 Aug 2009) | 12 lines
 
 Fix segfault when reloading chan_misdn.
 
 If more ports were specified than configured in misdn.conf a reload would crash
 asterisk. The problem was the unconfigured port was using data from the
 previously configured port. When the data for an unconfigured port was freed a
 crash would result from the double free.
 
 (closes issue ASTERISK-11552)
 Reported by: agupta
 Patches:
       bug12113.patch uploaded by jpeeler (license 325)
........

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

http://svn.digium.com/view/asterisk?view=rev&revision=212506
By: Digium Subversion (svnbot) 2009-08-17 11:52:05

Repository: asterisk
Revision: 212507

_U  branches/1.6.0/
U   branches/1.6.0/channels/misdn_config.c

------------------------------------------------------------------------
r212507 | jpeeler | 2009-08-17 11:52:05 -0500 (Mon, 17 Aug 2009) | 26 lines

Merged revisions 212506 via svnmerge from
https://origsvn.digium.com/svn/asterisk/trunk

................
 r212506 | jpeeler | 2009-08-17 11:50:45 -0500 (Mon, 17 Aug 2009) | 19 lines
 
 Merged revisions 212498 via svnmerge from
 https://origsvn.digium.com/svn/asterisk/branches/1.4
 
 ........
   r212498 | jpeeler | 2009-08-17 11:34:56 -0500 (Mon, 17 Aug 2009) | 12 lines
   
   Fix segfault when reloading chan_misdn.
   
   If more ports were specified than configured in misdn.conf a reload would crash
   asterisk. The problem was the unconfigured port was using data from the
   previously configured port. When the data for an unconfigured port was freed a
   crash would result from the double free.
   
   (closes issue ASTERISK-11552)
   Reported by: agupta
   Patches:
         bug12113.patch uploaded by jpeeler (license 325)
 ........
................

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

http://svn.digium.com/view/asterisk?view=rev&revision=212507
By: Digium Subversion (svnbot) 2009-08-17 11:52:41

Repository: asterisk
Revision: 212508

_U  branches/1.6.1/
U   branches/1.6.1/channels/misdn_config.c

------------------------------------------------------------------------
r212508 | jpeeler | 2009-08-17 11:52:40 -0500 (Mon, 17 Aug 2009) | 26 lines

Merged revisions 212506 via svnmerge from
https://origsvn.digium.com/svn/asterisk/trunk

................
 r212506 | jpeeler | 2009-08-17 11:50:45 -0500 (Mon, 17 Aug 2009) | 19 lines
 
 Merged revisions 212498 via svnmerge from
 https://origsvn.digium.com/svn/asterisk/branches/1.4
 
 ........
   r212498 | jpeeler | 2009-08-17 11:34:56 -0500 (Mon, 17 Aug 2009) | 12 lines
   
   Fix segfault when reloading chan_misdn.
   
   If more ports were specified than configured in misdn.conf a reload would crash
   asterisk. The problem was the unconfigured port was using data from the
   previously configured port. When the data for an unconfigured port was freed a
   crash would result from the double free.
   
   (closes issue ASTERISK-11552)
   Reported by: agupta
   Patches:
         bug12113.patch uploaded by jpeeler (license 325)
 ........
................

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

http://svn.digium.com/view/asterisk?view=rev&revision=212508
By: Digium Subversion (svnbot) 2009-08-17 11:53:12

Repository: asterisk
Revision: 212509

_U  branches/1.6.2/
U   branches/1.6.2/channels/misdn_config.c

------------------------------------------------------------------------
r212509 | jpeeler | 2009-08-17 11:53:12 -0500 (Mon, 17 Aug 2009) | 26 lines

Merged revisions 212506 via svnmerge from
https://origsvn.digium.com/svn/asterisk/trunk

................
 r212506 | jpeeler | 2009-08-17 11:50:45 -0500 (Mon, 17 Aug 2009) | 19 lines
 
 Merged revisions 212498 via svnmerge from
 https://origsvn.digium.com/svn/asterisk/branches/1.4
 
 ........
   r212498 | jpeeler | 2009-08-17 11:34:56 -0500 (Mon, 17 Aug 2009) | 12 lines
   
   Fix segfault when reloading chan_misdn.
   
   If more ports were specified than configured in misdn.conf a reload would crash
   asterisk. The problem was the unconfigured port was using data from the
   previously configured port. When the data for an unconfigured port was freed a
   crash would result from the double free.
   
   (closes issue ASTERISK-11552)
   Reported by: agupta
   Patches:
         bug12113.patch uploaded by jpeeler (license 325)
 ........
................

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

http://svn.digium.com/view/asterisk?view=rev&revision=212509