[asterisk-bugs] [JIRA] (ASTERISK-29893) deadlock during bridge

[Joshua C. Colp (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-29893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Joshua C. Colp closed ASTERISK-29893.
-------------------------------------

    Resolution: Duplicate

This is a duplicate of ASTERISK-29821 which has already been fixed, release candidates will be coming soon.

> deadlock during bridge
> ----------------------
>
>                 Key: ASTERISK-29893
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-29893
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Bridges/bridge_builtin_features
>    Affects Versions: 18.9.0
>            Reporter: Pascal Cadotte Michaud
>
> With Asterisk 18.9.0 we have a dead lock that happened twice in 2 days.
> Given an incoming call from the operator
> Given a phone with a call forward
> When Dial the user's phone
> Then there's a deadlock
> After some debugging I've found that 2 threads were waiting in bridge_channel_internal_join. Each of the has a bridge_channel variable with a chan and it's peer referencing each other.
> After locking it's bridge and it ->chan both thread try to lock the peer which is already locked by the other thread.
> I think this bug has been introduced here https://gerrit.asterisk.org/c/asterisk/+/17543/2/main/bridge_channel.c#2861



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