[asterisk-bugs] [JIRA] (ASTERISK-20551) Segfault when scheduled provisional keepalive is handled - dialog has already been destroyed

[aragon (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-20551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

aragon closed ASTERISK-20551.
-----------------------------

    Resolution: Cannot Reproduce

I think we were able to fix this with some changes to all-hangup AGI script. When Asterisk hangs up a channel prematurely and we didn't detect that hangup in our all-hangup AGI script.
                
> Segfault when scheduled provisional keepalive is handled - dialog has already been destroyed
> --------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-20551
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20551
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/General
>    Affects Versions: 1.8.17.0
>         Environment: SVN-branch-1.8-r374802
>            Reporter: aragon
>         Attachments: cli.txt, gdb bt.txt, segfault ref counts.rar
>
>
> While debugging ref count issue for another bug report I ran into a segfault
> ref count debugging was enabled at the time so I am attaching
> gdb backtrace
> CLI before crash
> ref count log

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