[asterisk-bugs] [JIRA] (ASTERISK-21356) Segfault

[William luke (JIRA)]

William luke created ASTERISK-21356:
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             Summary: Segfault
                 Key: ASTERISK-21356
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21356
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: General
    Affects Versions: 11.3.0
         Environment: CentOS 6.4
            Reporter: William luke
            Severity: Critical
         Attachments: backtrace.txt

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.

[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})





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