[SR-Users] crash at 480 reply to INVITE

[Daniel-Constantin Mierla]

OK. It happens to be traveling for few days, once I am back, I will dig
into it and see how to fix this long delayed processing so it does not
crash.

Cheers,
Daniel

On 06.02.19 22:04, Juha Heinanen wrote:
> I got the full syslog and pcap and based on those K indeed totally froze
> for about 14 minutes.  Below is updated summary:
>
> - K receives INVITE at 17:43:28 and forwards it over udp to uas
> - uas immediately responds with 183 followed by 180, which k forwards to UAC
> - at 17:44:29 uas responds again with 180 and K forwards it to UAC
> - at 17:44:44 K's invite timeout timer fires and it sends "408 request
>   timeout" to uac, which responds with ack
> - at that point K should also have send CANCEL to uas, but it didn't
> - K keeps on handling requests normally until 17:46:39
> - after that K freezes totally (no messages to syslog although pcap shows
>   that K receives requests over udp)
> - at 16:00:23, K un-freezes and (according to pcap) sends two cancel
>   requests to the uas
> - K also sends out several replies and request that are related to
>   requests that it had received before the freeze (and in most cases
>   gets back "481 transaction does not exist" replies)
> - after that (during the same second) K starts to process normally new
>   incoming requests
> - during the same second after the un-freeze, these errors are produced
>   to syslog:
>
> Feb  1 16:00:23 /usr/bin/sip-proxy[1327]: INFO: db_mysql [km_dbase.c:85]: db_mysql_submit_query(): driver error on ping: Lost connection to MySQL server during query
> Feb  1 16:00:23 /usr/bin/sip-proxy[1313]: INFO: tm [t_reply.c:480]: _reply_light(): can't generate 408 reply when a final 487 was sent out
> Feb  1 16:00:23 /usr/bin/sip-proxy[1313]: ERROR: sl [sl.c:277]: send_reply(): failed to reply stateful (tm)
> Feb  1 16:00:23 /usr/bin/sip-proxy[1348]: CRITICAL: <core> [core/pass_fd.c:277]: receive_fd(): EOF on 18
>
> - finally K crashes:
>
> Feb  1 16:00:24 /usr/bin/sip-proxy[1309]: ALERT: <core> [main.c:755]: handle_sigs(): child process 1314 exited by a signal 11
>
> -- Juha
>
-- 
Daniel-Constantin Mierla -- www.asipto.com
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