[asterisk-bugs] [JIRA] (ASTERISK-21128) Locking inversion when attempting to set caller ID while holding iaxsl lock causes deadlock

Matt Jordan (JIRA) noreply at issues.asterisk.org
Thu Feb 28 09:28:18 CST 2013


     [ https://issues.asterisk.org/jira/browse/ASTERISK-21128?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Jordan updated ASTERISK-21128:
-----------------------------------

    Assignee: Matt Jordan  (was: Pavel Troller)
      Status: Triage  (was: Waiting for Feedback)
    
> Locking inversion when attempting to set caller ID while holding iaxsl lock causes deadlock
> -------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-21128
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21128
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_iax2
>            Reporter: Pavel Troller
>            Assignee: Matt Jordan
>         Attachments: AST-21128-11.diff, ASTERISK-21128-1.8.diff, ASTERISK-21128-1.8-modified.diff, locks.txt
>
>
> Systems running IAX2 trunks (either with trunk=yes or without it) freeze occasionally with typical symptoms of unreleased locks. The lock appears mostly during the call setup, it hasn't been observed during speech phase or call release. I never found it in 1.6 or less, it appears since 1.8. The newest system on which the problem was observed is indicated below. The only known way to restore functionality is to kill and restart Asterisk. A special debugging Asterisk build has been deployed to one of the sites and core show locks command applied during the deadlock. Its output is attached.

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