[asterisk-bugs] [JIRA] (ASTERISK-27944) res_pjsip_t38: Crash receiving 1xx responses other than 100 before 200 for T.38 reINVITE

[Friendly Automation (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-27944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=244541#comment-244541 ] 

Friendly Automation commented on ASTERISK-27944:
------------------------------------------------

Change 9959 merged by George Joseph:
res_pjsip_t38.c: Fix crash if already saw a final T.38 reINVITE response.

[https://gerrit.asterisk.org/9959|https://gerrit.asterisk.org/9959]

> res_pjsip_t38: Crash receiving 1xx responses other than 100 before 200 for T.38 reINVITE
> ----------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-27944
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-27944
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_pjsip_t38
>    Affects Versions: 15.2.2, 15.4.1
>            Reporter: Joshua Elson
>            Assignee: Unassigned
>            Severity: Minor
>              Labels: fax, patch, pjsip
>         Attachments: core.com-2018-08-01T15-46-31-0600-brief.txt, core.com-2018-08-01T15-46-31-0600-full.txt, core.com-2018-08-01T15-46-31-0600-locks.txt, core.com-2018-08-01T15-46-31-0600-thread1.txt, core.iad.2018-08-10T12-34-02-0600-brief.txt, core.iad.2018-08-10T12-34-02-0600-full.txt, core.iad.2018-08-10T12-34-02-0600-locks.txt, core.iad.2018-08-10T12-34-02-0600-thread1.txt, core.iad.com-2018-06-25T14-06-14-0600-brief.txt, core.iad.com.2018-06-25T14-06-14-0600-full.txt, core.iad.com.2018-06-25T14-06-14-0600-locks.txt, core.iad.com.2018-06-25T14-06-14-0600-thread1.txt, core.iad.com-2018-07-09T09-14-58-0600-brief.txt, core.iad.com-2018-07-09T09-14-58-0600-full.txt, core.iad.com-2018-07-09T09-14-58-0600-locks.txt, core.iad.com-2018-07-09T09-14-58-0600-thread1.txt, crash_dialplan.txt, jira_asterisk_27944_v2_w_debug_v15.patch
>
>
> Crash of Asterisk on T38 session rejection via PJSIP.
> This is happening somewhat routinely on a number of our nodes. The error message in the logs will appear as:
> [2018-06-25 14:06:04] WARNING[3368][C-00005bd3] res_fax.c: channel 'PJSIP/FC-DFW-PROXY-0000f050' refused to negotiate T.38
> There will be a crash with the attached backtrace.



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