Olivier
2017-Feb-14 17:21 UTC
[asterisk-users] Advices when Asterisk segfaults and nothing useful in logs
Hello, I've got a 13.13.1 system using PJSIP stack on debian Jessie. It runs from 50 to 100 simultaneous calls (so 100 to 200 PJSIP channels) all day long.>From time to time, roughly meaning once a month, it segfaults with lines(from dmesg -T output) like this: asterisk[1160]: segfault at 7efffffe ip 00000000005881d6 sp 00007fec95c33910 error 4 in asterisk[400000+2a2000] Debug level was unfortunately not set in asterisk.conf but verbose level was set to 5. Asterisk runs with: /usr/sbin/asterisk -U asterisk -G asterisk -g Asterisk is compiled with DONT_OPTIMIZE and BETTER_BACKTRACES options. "core show settings" outputs: * Directories ------------- Configuration file: Configuration directory: /etc/asterisk Module directory: /usr/lib/asterisk/modules Spool directory: /var/spool/asterisk Log directory: /var/log/asterisk Run/Sockets directory: /var/run/asterisk PID file: /var/run/asterisk/asterisk.pid VarLib directory: /var/lib/asterisk Data directory: /var/lib/asterisk ASTDB: /var/lib/asterisk/astdb IAX2 Keys directory: /var/lib/asterisk/keys 1. Am I correct to expect a coredump file to be produced anytime asterisk segfaults ? 2. Does Asterisk prints any WARNING or ERROR message whenever it detects, at startup preferably, that it has not required permissions to write a coredump file ? 3. Among above directories, which one is choosen to save coredump files ? Is it something that can/should be configured in /etc/asterisk (I've seen related options in some debian /etc/default/asterisk files but I would be curious to know if such things exist 4. Is there anything useful I can do with a line such as : asterisk[1160]: segfault at 7efffffe ip 00000000005881d6 sp 00007fec95c33910 error 4 in asterisk[400000+2a2000] ? Any pointer ? 5. Suggestions ? Best regards -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20170214/a1c57087/attachment.html>
George Joseph
2017-Feb-14 21:51 UTC
[asterisk-users] Advices when Asterisk segfaults and nothing useful in logs
On Tue, Feb 14, 2017 at 10:21 AM, Olivier <oza.4h07 at gmail.com> wrote:> Hello, > > I've got a 13.13.1 system using PJSIP stack on debian Jessie. > It runs from 50 to 100 simultaneous calls (so 100 to 200 PJSIP channels) > all day long. > From time to time, roughly meaning once a month, it segfaults with lines > (from dmesg -T output) like this: > asterisk[1160]: segfault at 7efffffe ip 00000000005881d6 sp > 00007fec95c33910 error 4 in asterisk[400000+2a2000] > > > Debug level was unfortunately not set in asterisk.conf but verbose level > was set to 5. > Asterisk runs with: > /usr/sbin/asterisk -U asterisk -G asterisk -g > > Asterisk is compiled with DONT_OPTIMIZE and BETTER_BACKTRACES options. > > "core show settings" outputs: > * Directories > ------------- > Configuration file: > Configuration directory: /etc/asterisk > Module directory: /usr/lib/asterisk/modules > Spool directory: /var/spool/asterisk > Log directory: /var/log/asterisk > Run/Sockets directory: /var/run/asterisk > PID file: /var/run/asterisk/asterisk.pid > VarLib directory: /var/lib/asterisk > Data directory: /var/lib/asterisk > ASTDB: /var/lib/asterisk/astdb > IAX2 Keys directory: /var/lib/asterisk/keys > > > > 1. Am I correct to expect a coredump file to be produced anytime asterisk > segfaults ? >Yes if -g is set and the user that's running asterisk has permissions to set ulimit -c.> > 2. Does Asterisk prints any WARNING or ERROR message whenever it detects, > at startup preferably, that it has not required permissions to write a > coredump file ? >No because it's the system that determines where a coredump goes and actually writes it, not asterisk. It's the sysctl kernel.core_pattern setting.> > 3. Among above directories, which one is choosen to save coredump files ? > Is it something that can/should be configured in /etc/asterisk (I've seen > related options in some debian /etc/default/asterisk files but I would be > curious to know if such things exist >See above.> > 4. Is there anything useful I can do with a line such as : > asterisk[1160]: segfault at 7efffffe ip 00000000005881d6 sp > 00007fec95c33910 error 4 in asterisk[400000+2a2000] ? Any pointer ? >Nope. Not a thing. Sorry.> > 5. Suggestions ? >If you can at least get the system to write a coredump file, there are new utilities in /var/lib/asterisk/scripts, namely ast_coredumper which can help create the backtraces if it can at least find the core file. Just run "./ast_coredumper --help" for more info. You should also be able to use those utilities with earlier Asterisk 13 versions.> > Best regards > > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > Check out the new Asterisk community forum at: https://community.asterisk. > org/ > > New to Asterisk? Start here: > https://wiki.asterisk.org/wiki/display/AST/Getting+Started > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >-- George Joseph Digium, Inc. | Software Developer 445 Jan Davis Drive NW - Huntsville, AL 35806 - US Check us out at: www.digium.com & www.asterisk.org -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20170214/4973fb45/attachment.html>
George Joseph
2017-Feb-14 21:52 UTC
[asterisk-users] Advices when Asterisk segfaults and nothing useful in logs
On Tue, Feb 14, 2017 at 2:51 PM, George Joseph <gjoseph at digium.com> wrote:> > > On Tue, Feb 14, 2017 at 10:21 AM, Olivier <oza.4h07 at gmail.com> wrote: > >> Hello, >> >> I've got a 13.13.1 system using PJSIP stack on debian Jessie. >> It runs from 50 to 100 simultaneous calls (so 100 to 200 PJSIP channels) >> all day long. >> From time to time, roughly meaning once a month, it segfaults with lines >> (from dmesg -T output) like this: >> asterisk[1160]: segfault at 7efffffe ip 00000000005881d6 sp >> 00007fec95c33910 error 4 in asterisk[400000+2a2000] >> >> >> Debug level was unfortunately not set in asterisk.conf but verbose level >> was set to 5. >> Asterisk runs with: >> /usr/sbin/asterisk -U asterisk -G asterisk -g >> >> Asterisk is compiled with DONT_OPTIMIZE and BETTER_BACKTRACES options. >> >> "core show settings" outputs: >> * Directories >> ------------- >> Configuration file: >> Configuration directory: /etc/asterisk >> Module directory: /usr/lib/asterisk/modules >> Spool directory: /var/spool/asterisk >> Log directory: /var/log/asterisk >> Run/Sockets directory: /var/run/asterisk >> PID file: /var/run/asterisk/asterisk.pid >> VarLib directory: /var/lib/asterisk >> Data directory: /var/lib/asterisk >> ASTDB: /var/lib/asterisk/astdb >> IAX2 Keys directory: /var/lib/asterisk/keys >> >> >> >> 1. Am I correct to expect a coredump file to be produced anytime asterisk >> segfaults ? >> > > Yes if -g is set and the user that's running asterisk has permissions to > set ulimit -c. > > >> >> 2. Does Asterisk prints any WARNING or ERROR message whenever it detects, >> at startup preferably, that it has not required permissions to write a >> coredump file ? >> > > No because it's the system that determines where a coredump goes and > actually writes it, not asterisk. > It's the sysctl kernel.core_pattern setting. > > >> >> 3. Among above directories, which one is choosen to save coredump files ? >> Is it something that can/should be configured in /etc/asterisk (I've seen >> related options in some debian /etc/default/asterisk files but I would be >> curious to know if such things exist >> > > See above. > > >> >> 4. Is there anything useful I can do with a line such as : >> asterisk[1160]: segfault at 7efffffe ip 00000000005881d6 sp >> 00007fec95c33910 error 4 in asterisk[400000+2a2000] ? Any pointer ? >> > > Nope. Not a thing. Sorry. > > > >> >> 5. Suggestions ? >> > > If you can at least get the system to write a coredump file, there are new > utilities in /var/lib/asterisk/scripts, namely ast_coredumper which can > help create the backtraces if it can at least find the core file. Just run > "./ast_coredumper --help" for more info. You should also be able to use > those utilities with earlier Asterisk 13 versions. > > >Oh yeah, and it's on my list to publish instructions on how ot use those utilities but they were just released yesterday.> >> Best regards >> >> >> -- >> _____________________________________________________________________ >> -- Bandwidth and Colocation Provided by http://www.api-digital.com -- >> >> Check out the new Asterisk community forum at: >> https://community.asterisk.org/ >> >> New to Asterisk? Start here: >> https://wiki.asterisk.org/wiki/display/AST/Getting+Started >> >> asterisk-users mailing list >> To UNSUBSCRIBE or update options visit: >> http://lists.digium.com/mailman/listinfo/asterisk-users >> > > > > -- > George Joseph > Digium, Inc. | Software Developer > 445 Jan Davis Drive NW - Huntsville, AL 35806 - US > Check us out at: www.digium.com & www.asterisk.org > >-- George Joseph Digium, Inc. | Software Developer 445 Jan Davis Drive NW - Huntsville, AL 35806 - US Check us out at: www.digium.com & www.asterisk.org -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20170214/9ce3fd86/attachment.html>
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