[asterisk-bugs] [JIRA] (ASTERISK-25645) res_rtp_asterisk: Lock inversion

[Stian Halseth (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-25645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=232315#comment-232315 ] 

Stian Halseth commented on ASTERISK-25645:
------------------------------------------

Thank you for your response, Steve. 

We're currently using pjproject-2.5.5, configured asterisk-13.11.2 with bundled pjproject (--with-pjproject-bundled). 

>From what I can tell your patch could also be applied to pjproject-2.5.5 as the function on_timer(pj_timer_heap_t *th, pj_timer_entry *te) is unchanged between pjproject-2.4.5 and pjproject-2.5.5. 

I will give it a try!



> res_rtp_asterisk: Lock inversion
> --------------------------------
>
>                 Key: ASTERISK-25645
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25645
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_rtp_asterisk
>            Reporter: Steve Davies
>         Attachments: deadlocked_threads.txt, experimental_anti_deadlock, unlock_ice_before_callback
>
>
> Reported by Steve Davies on asterisk-dev:
> commit 5e6b1476a087407a052f007d326c504cfeefebe7
> ASTERISK-25614
> 2 code paths which approximate the following will cause a lock-inversion deadlock:
> approximate call orders are:
> a)
> pj_timer_heap_poll (PJ_LOCK)
> ast_rtp_on_ice_complete
> ast_rtp_instance_set_remote_address
> remote_address_set
> ast_rtp_remote_address_set
> (DTLS_LOCK)
> ...
> b)
> ast_pbx...
> app_dial
> bridge...
> read
> rtp_read
> ...
> __rtp_recvfrom
> (DTLS_LOCK)
> dtls_srtp_check_pending
> __rtp_sendto
> pj_ice_sess_send_data
> (PJ_LOCK)



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