[asterisk-bugs] [JIRA] (ASTERISK-28997) res_pjsip: Asterisk locks up and stops processing any SIP requests

[Asterisk Team (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-28997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Asterisk Team updated ASTERISK-28997:
-------------------------------------

    Status: Waiting for Feedback  (was: Waiting for Feedback)

> res_pjsip: Asterisk locks up and stops processing any SIP requests
> ------------------------------------------------------------------
>
>                 Key: ASTERISK-28997
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28997
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_pjsip, Resources/res_sorcery_memory_cache
>    Affects Versions: 16.11.1
>         Environment: Ubuntu Linux 18.04.4 LTS, kernel 4.15.0-111-generic
>            Reporter: Yury Kirsanov
>            Assignee: Asterisk Team
>            Severity: Minor
>              Labels: fax
>         Attachments: backtrace-threads.txt, taskprocessors.txt, threads.txt
>
>
> Hi,
> We have a problem with one of many of our Asterisk-based servers. From time to time it just locks up and stops processing SIP messages, complaining about pjsip/distributor queue has reached 500 scheduled tasks. We have several servers based on same Asterisk version with exactly the same environment, but different Asterisk configuration files, some have more SIP devices and more complex dial plans, some has less.
> This issue happens at any time of the day and I don't see any way to reproduce it. There is no segfault generated as Asterisk keeps running, the only thing is that all distributor queues are overflown for some reason.
> After Asterisk restart it starts to work like nothing happened. I've checked all network interfaces and there is no DDoS attack or anything like that.
> Our Asterisk is patched with ASTERISK-28923 patch and it's the same server that was segfaulting before. Other similar servers are running unpatched version of Asterisk 16.11.1.
> I'm attaching debug logs that I was able to grab during this lockup. Asterisk was compiled with 'NO_DEBUG' option.
> Please let me know if I can provide any additional information or recompile Asterisk with some additional debug versions. Thanks!



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