[sr-dev] Kamailio 5.1 nightly (rc2) crashing - udp_rcv_loop(): print buffer building failed

[Daniel-Constantin Mierla]

I pushed a patch few days ago related to this report, if you still get
the issue, better open an issue on bug tracker -- it is safer not to
forget about it.

Cheers,
Daniel


On 30.11.17 20:04, Daniel-Constantin Mierla wrote:
>
> Hello,
>
> did you run with debug=3 in kamailio.cfg? That piece of code is new in
> 5.1, but executed only when debug is at least 3 (which is for
> troubleshooting purposes, not for production). Anyhow, I will check a
> bit that part to see if anything is wrong there...
>
> Cheers,
> Daniel
>
>
> On 30.11.17 18:52, George Diamantopoulos wrote:
>> OK, so I performed a clean installation on a new debian stretch
>> instance I haven't been able to reproduce the issue so far. Either
>> something changed in the latest nightly, or the fact that I upgraded
>> from 5.0.4 was causing the issue.
>>
>> The deployment is automated with ansible, so there shouldn't be any
>> deviations in the configuration of the host. Only other difference
>> (apart from the clean kamailio install) should be rtpengine's
>> building, which was performed anew. However, I don't see how that
>> might have affected things (after all, I don't believe kamailio is a
>> build time dependency for rtpengine)...
>>
>> On 30 November 2017 at 01:08, George Diamantopoulos
>> <georgediam at gmail.com <mailto:georgediam at gmail.com>> wrote:
>>
>>     Oh, I also tried with 5.2.0-dev1 nightly and it also crashes in
>>     the same way...
>>
>>     On 30 November 2017 at 01:07, George Diamantopoulos
>>     <georgediam at gmail.com <mailto:georgediam at gmail.com>> wrote:
>>
>>         I've been trying to get a core dump on this for hours now,
>>         but I just can't get one! Is there anything special needed
>>         with this build on debian stretch? Checked ulimits,
>>         disable_core_dump, /etc/default/kamailio, started it as root
>>         (-u root -g root), from systemd with user kamailio, with
>>         working directory set in command line and in config file, I
>>         just can't get a core dump...
>>
>>         Thanks
>>
>>         On 29 November 2017 at 18:10, George Diamantopoulos
>>         <georgediam at gmail.com <mailto:georgediam at gmail.com>> wrote:
>>
>>             Hello,
>>
>>             I've just installed kamailio 5.1 nightly from the debian
>>             repo for stretch. I didn't change anything in the
>>             configuration compared to 5.0.4 (which I was testing
>>             previously), apart from the database structure as found
>>             in the wiki for upgrading from 5.0.x.
>>
>>             Now kamailio crashes after a while, with the following
>>             output in the logs:
>>
>>             Nov 29 15:47:05 modcom-sbc-dev1 kamailio[2497]:  3(2502)
>>             ERROR: <core> [core/udp_server.c:481]: udp_rcv_loop():
>>             print buffer building failed
>>             Nov 29 15:47:05 modcom-sbc-dev1 kamailio[2497]: 121(2620)
>>             CRITICAL: <core> [core/pass_fd.c:277]: receive_fd(): EOF
>>             on 26
>>             Nov 29 15:47:05 modcom-sbc-dev1 kamailio[2497]: 121(2620)
>>             DEBUG: <core> [core/tcp_main.c:3512]: handle_ser_child():
>>             dead child 3, pid 2502 (shutting down?)
>>             Nov 29 15:47:05 modcom-sbc-dev1 kamailio[2497]: 121(2620)
>>             DEBUG: <core> [core/io_wait.h:602]: io_watch_del(): DBG:
>>             io_watch_del (0x55ae7132ffc0, 26, -1, 0x0) fd_no=126 called
>>             Nov 29 15:47:05 modcom-sbc-dev1 kamailio[2497]:  0(2499)
>>             ALERT: <core> [main.c:741]: handle_sigs(): child process
>>             2502 exited normally, status=255
>>             Nov 29 15:47:05 modcom-sbc-dev1 kamailio[2497]:  0(2499)
>>             INFO: <core> [main.c:771]: handle_sigs(): terminating due
>>             to SIGCHLD
>>             Nov 29 15:47:05 modcom-sbc-dev1 kamailio[2497]:  0(2499)
>>             DEBUG: <core> [main.c:773]: handle_sigs(): terminating
>>             due to SIGCHLD
>>             Nov 29 15:47:05 modcom-sbc-dev1 kamailio[2497]: 118(2617)
>>             INFO: <core> [main.c:826]: sig_usr(): signal 15 received
>>
>>             Let me know if I can somehow help dissect this issue, I
>>             don't really know where to start. Thanks.
>>
>>             BR,
>>             George
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> Kamailio (SER) - Development Mailing List
>> sr-dev at lists.kamailio.org
>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev
>
> -- 
> Daniel-Constantin Mierla
> www.twitter.com/miconda -- www.linkedin.com/in/miconda
> Kamailio Advanced Training - www.asipto.com
> Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com

-- 
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - www.asipto.com
Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com

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