[asterisk-bugs] [JIRA] (ASTERISK-26551) Voicemail deadlock when under load with ODBC backend

[Asterisk Team (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-26551?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=233374#comment-233374 ] 

Asterisk Team commented on ASTERISK-26551:
------------------------------------------

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].

> Voicemail deadlock when under load with ODBC backend
> ----------------------------------------------------
>
>                 Key: ASTERISK-26551
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26551
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Applications/app_voicemail, Applications/app_voicemail/ODBC
>    Affects Versions: 13.11.2
>         Environment: Up to date Debian 8
> chan_pjsip
> Cloned a production server and enabled debug then setup automated tests to keep the voicemail system under load in order to reproduce this bug.
>            Reporter: David Moore
>
> Voicemail-only server (answering incoming calls from peer with chan_pjsip)
> Bug can be reproduced by placing the voicemail system under load, I did this by leaving many simultaneous voicemails through automated means. After running for several hours the voicemail app locks up. The system will still accept incoming calls, and enter the Voicemail app, but no audio is returned and the call does not progress further.
> The system eventually recovers and resumes normal operation, this generally takes between 3 and 20 minutes.
> I took ten backtraces and ten copies of 'core show locks' during this deadlock on my debug server, I can upload all of them if necessary, I will begin by attaching the latest data set and will upload more upon request to avoid cluttering things up unnecessarily



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