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

[David Moore (JIRA)]

David Moore created ASTERISK-26551:
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             Summary: 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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