Bug#798120: gstreamer1.0-libav: libgstlibav.so cause Libre Office segmentation fault

[MLHPUB]

On Sat, 03 Oct 2015 18:37:11 +0100 Sebastian =?ISO-8859-1?Q?Dr=F6ge?= 
<slomo at coaxion.net> wrote:
> On Sat, 05 Sep 2015 22:27:57 +0200 Matt <mlhpub at free.fr> wrote:
>
> > Trying to look at a .PPS file with Libre Office, libgstlibav.so probably causes a segmentation fault.
> > It happens when Libre Office try to switch in full screen mode with sounds effects.
> > Impossible to reproduce if .PPS is saved in .PPT format without automatic full screen switching and slideshow starting.
> >
> > Syslog tells this :
> >
> > Sep  5 20:00:12 montreal kernel: [ 1924.538567] wavparse0:sink[2364]: segfault at 2d8 ip 00007ffa32d3abd4 sp 00007ffa4a221460 error 4 in libgstlibav.so[7ffa32d21000+37000]
> >
> > I have tried to install back gstreamer0.10-plugins-bad instead of gstreamer1.0-plugins-bad and the problem disappear with Libre Office (but others come back with Iceweasel).
> >
> > A but lost with these problems but may be help ?
>
> Does it still happen with 1.6.0-1 and can you provide a .PPS to
> reproduce the problem?
>
> Alternatively, can you get a backtrace of all threads (after installing
> the relevant debug packages) of the crash?
>
>
> I also see that you're using ffmpeg from Debian Multimedia. That will
> easily cause crashes in gst-libav! Please use the ones from Debian.


Hi,

Sorry for the delay and my poor level...

Here is joined an example of PPS file causing the problem.

Something new with Iceweasel : looking for my Gmail contacts causes a 
segfault.
Gdb tell me this :

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffbb03e700 (LWP 9013)]
0x00007fffb9bfcbd4 in ?? () from 
/usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstlibav.so

About your advice with ffmpeg, I do not know how to fix better priority 
to official Debian package. I only use the following preferences file 
for APT :

Package: *
Pin:release o=Unofficial Multimedia Packages,a=stable
Pin-Priority: 100

Thanks !

Matthieu
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