[asterisk-bugs] [JIRA] (ASTERISK-25464) Segfault with T.38 protocol and ReceiveFax Application

[Rusty Newton (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-25464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rusty Newton updated ASTERISK-25464:
------------------------------------

    Assignee: Peter Pfannenschmid
      Status: Waiting for Feedback  (was: Triage)

Please note that res_fax_spandsp is extended support so response time will reflect that while we are consumed with core supported modules.

I've had a developer look over it quickly to assist with triage.

Please provide the following:

 * a debug log captured right up until the crash.[1]
 * a new backtrace that correlates with the log
 * the new backtrace should be captured with DONT_OPTIMIZE and BETTER_BACKTRACES compiled.
 * compile libspandsp with debug symbols as we are missing some information on the last frame.
 * If the crash looks identical please print f and p from frame #2


[1]: https://wiki.asterisk.org/wiki/display/AST/Collecting+Debug+Information

> Segfault with T.38 protocol and ReceiveFax Application
> ------------------------------------------------------
>
>                 Key: ASTERISK-25464
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25464
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_fax_spandsp
>    Affects Versions: 13.5.0
>         Environment: Debian Wheezy x64 stock distribution (kernel 3.2.0) with following exceptions (all compiled myself, no patches or alterations): Asterisk 13.5.0, PJSIP 2.4.5, SpanDSP 0.0.6
>            Reporter: Peter Pfannenschmid
>            Assignee: Peter Pfannenschmid
>            Severity: Critical
>         Attachments: gdb.txt
>
>
> Sending a fax from a T.38 capable endpoint to an extension which just should do ReceiveFax (i.e. store the fax on HDD for testing purposes); segfault occurs even before the tiff file is created.



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