Bug#788708: Bug#799632: iceweasel: SIGSEGV when playing videos via gstreamer

Sebastian Dröge slomo at coaxion.net
Wed Nov 11 13:37:16 UTC 2015


On Di, 2015-11-10 at 20:31 +0100, Agustin Martin wrote:
> On Mon, Sep 21, 2015 at 03:55:16AM +0200, Soeren D. Schulze wrote:
> > Package: iceweasel
> > Version: 38.2.1esr-1~deb8u1
> > Severity: important
> > 
> > Approximately once every 10 hours of use, I experience a crash of
> > Iceweasel.
> > It seems to be correlated with playing videos via gstreamer with
> > the
> > libav/ffmpeg backend, but I have not yet found any reliable way to
> > reproduce
> > it.
> > 
> > I have observed similar crashes like this on other Debian systems
> > with
> > earlier versions of Iceweasel, but I cannot tell if it is the same
> > bug
> > because I did not have a debugger running.
> > 
> > Please see the full backtrace below.  At a first glance, the
> > problem seems
> > to be in the GST_VIDEO_FRAME_COMP_DATA macro which ultimately calls
> > GST_VIDEO_FORMAT_INFO_DATA (defined in the gstreamer headers),
> > which in turn
> > dereferences frame->info->finfo.  According to #1 in the backtrace,
> > finfo is
> > NULL, so I think this is what causes the crash.
> ...
> 
> > {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype
> > = 0}}}
> >         not_first_call = <optimized out>
> >         pagesize_m1 = <optimized out>
> >         sp = <optimized out>
> >         freesize = <optimized out>
> >         __PRETTY_FUNCTION__ = "start_thread"
> > #16 0x00007ffff707c06d in clone () at
> > ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
> > No locals.
> > (gdb)
> 
> This seems to be similar to the backtrace reported in
> https://bugs.debian.org/797227, caused by the same problem
> as https://bugs.debian.org/788708 (cc'ed).
> 
> Is this problem still hapenning with gstreamer1.0-plugins-bad 1.4.5-3 
> or higher?

If someone can confirm that, I'll prepare a gst-plugins-bad1.0 update
for jessie with that patch. Just let me know :)
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