[asterisk-bugs] [JIRA] (ASTERISK-21356) Segfault during bridge channel proxy inspection in a masquerade caused by an AMI Redirect of two channels

[Matt Jordan (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-21356?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Jordan updated ASTERISK-21356:
-----------------------------------

    Component/s:     (was: General)
                 Core/Bridging
    
> Segfault during bridge channel proxy inspection in a masquerade caused by an AMI Redirect of two channels 
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-21356
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21356
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Core/Bridging
>    Affects Versions: 11.3.0
>         Environment: CentOS 6.4
>            Reporter: William luke
>            Severity: Critical
>      Target Release: 1.8.22.0, 11.4.0
>
>         Attachments: backtrace.txt, debuglog.tar.gz, jira_asterisk_21356_v11.patch
>
>
> Asterisk segfaulted during normal operation.
> After speaking to mjordan on #asterisk he advised that it looks like the a redirect thread (Thread 1) is trying to access a bridged channel using a NULL pointer.
> The scenario is that two channels are in a bridge, and then we execute a dual Redirect (via AMI) to put them both into a ConfBridge, so that we can bring a 3rd party into the call.
> This happens successfully hundreds of times a day on this system, so must be some sort of edge case when it goes wrong.
> I also *should* have a full debug log available, but it's quite a busy system and would be rather a large file (Circa 50Gb/day). I'm sure I could make it available if it would help.
> {noformat}
> [gl-agentconf]
> exten => _X.,1,Set(ConfBridgeNumber=99${EXTEN})
>         same => n,NoOp(Putting AGENT into ConfBridge ${ConfBridgeNumber})
> ;       same => n,Set(JITTERBUFFER(fixed)=default);Adaptive with defaults.
>         same => n,Answer()
>         same => n,ConfBridge(${ConfBridgeNumber})
>         same => n,NoOp(Putting AGENT back into their Dialling Hub. Exten: ${EXTEN})
>         same => n,Goto(gl-diallinghub,${EXTEN},agentinhub)
> [gl-customerconf]
> exten => _X.,1,Set(ConfBridgeNumber=99${EXTEN})
> ;       same => n,Set(JITTERBUFFER(fixed)=default);Adaptive with defaults.
>         same => n,NoOp(Putting CUSTOMER into ConfBridge ${ConfBridgeNumber})
>         same => n,Answer()
>         same => n,ConfBridge(${ConfBridgeNumber})
> {noformat}

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