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

[Daniel-Constantin Mierla]

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
>
>
>
>
>
>
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-- 
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
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