[asterisk-bugs] [JIRA] (ASTERISK-28869) Frequent segfaults

[Asterisk Team (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-28869?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=250622#comment-250622 ] 

Asterisk Team commented on ASTERISK-28869:
------------------------------------------

Thanks for creating a report! The issue has entered the triage process. That means the issue will wait in this status until a Bug Marshal has an opportunity to review the issue. Once the issue has been reviewed you will receive comments regarding the next steps towards resolution.

A good first step is for you to review the [Asterisk Issue Guidelines|https://wiki.asterisk.org/wiki/display/AST/Asterisk+Issue+Guidelines] if you haven't already. The guidelines detail what is expected from an Asterisk issue report.

Then, if you are submitting a patch, please review the [Patch Contribution Process|https://wiki.asterisk.org/wiki/display/AST/Patch+Contribution+Process].

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> Frequent segfaults
> ------------------
>
>                 Key: ASTERISK-28869
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28869
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: pjproject/pjsip
>    Affects Versions: 16.5.0, 16.9.0, 16.10.0
>         Environment: Google cloud, asterisk running on n1-standard-4 (4 vCPUs, 15 GB memory - Ubuntu 18.04.2 LTS ). Multiple asterisk instances using realtime config (share same mysql instance). Pjsip devices. Asterisk nodes are running behind Kamailio+RTPEngine. Softphones are Webrtc based connecting to Kamailio via websockets
>            Reporter: Chris
>              Labels: webrtc
>
> We have been running into random segfaults in Asterisk (tried versions 16.5 / 16.9 and now 16.10). Segfaults seem random but only appear to happen under a load of 15+ concurrent calls (never occur after hours while system is in use but under lighter load). Performance on asterisk machines during crash seems fine, not seeing any errors or warnings in the logs.
> Originally we started with one asterisk node but due to crashes we ended up adding multiple Asterisk nodes (behind Kamailio) to let us take more calls. It seems like receiving/transmitting any SIP message (publish device state, qualify aor, hangup etc)  can cause a segfault. 
> Segfaults always occur inside pop_freelist in pjsip library. Ht's timer_ids_freelist always appears corrupt/out of range during segfault eg:
> ht= {pool = 0x5616898c0140, max_size = 262142, cur_size = 23, max_entries_per_poll = 10, lock = 0x561689d02440, auto_delete_lock = 1, heap = 0x7f45530e7038,
>   timer_ids = 0x561689c02448, timer_ids_freelist = 1587220789, callback = 0x0}
> Thread1 backtrace: https://pastebin.com/73fgqxw2
> We have the full coredumps/logs available but they contain customer data.  Asterisk nodes are compiled with don't optimize/better backtraces



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