[asterisk-bugs] [JIRA] (ASTERISK-21207) Deadlock on fax extension calling ast_async_goto() with locked channel

Ashley Winters (JIRA) noreply at issues.asterisk.org
Tue Mar 5 12:11:01 CST 2013


     [ https://issues.asterisk.org/jira/browse/ASTERISK-21207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ashley Winters updated ASTERISK-21207:
--------------------------------------

    Attachment: fax-deadlock.patch

Fix for all obvious locations (chan_sip.c and chan_dahdi.c) where ast_async_goto(chan, ...) is called with chan locked.
                
> Deadlock on fax extension calling ast_async_goto() with locked channel
> ----------------------------------------------------------------------
>
>                 Key: ASTERISK-21207
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21207
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_dahdi, Channels/chan_sip/General
>    Affects Versions: 10.7.1, 11.2.1
>         Environment: CentOS 6.3 x86_64
>            Reporter: Ashley Winters
>            Severity: Critical
>         Attachments: fax-deadlock.patch, gdb-fax-deadlock.txt
>
>
> On an asterisk system with heavy use of AGI and inbound CNG-detected faxing, occasionally all channel activity will freeze. Running 'core show channels' returns nothing, but the logs continue running with anything except channel activity. Running with 'sip set debug on' shows that chan_sip.c doesn't even claim to be reading packets anymore.
> This deadlock was triggered several times daily across our array of asterisk servers, which process hundreds of faxes and tens of thousands of calls daily.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.asterisk.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira



More information about the asterisk-bugs mailing list