[asterisk-bugs] [JIRA] (ASTERISK-28156) Race condition involving session->media (res_pjsip_session) leads to crash.

[Paulo Vicentini (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-28156?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on ASTERISK-28156 started by Paulo Vicentini.

> Race condition involving session->media (res_pjsip_session) leads to crash.
> ---------------------------------------------------------------------------
>
>                 Key: ASTERISK-28156
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28156
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_pjsip, Core/Bridging
>    Affects Versions: 13.20.0
>            Reporter: Paulo Vicentini
>            Assignee: Paulo Vicentini
>              Labels: pjsip
>
> We are experiencing a crash due to a misuse of session->media container between threads running (bridge_channel_ind_thread / pbx_thread) (at t38_framehook_read function) and the thread running ast_taskprocessor_execute (res/res_pjsip_session.c:session_end)
> Depending on the SIP flow (during a disconnection) and the threads' code path, the session->media container is being destroyed (and set to NULL) by the thread running ast_taskprocessor_execute while the thread running t38_framehook_read is still referring to it.



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