[MPlayer-users] Segfault in mplayer

[qsd at rogers.com]

Hi again,

I did some testing of my hardware (memcheck, cpu stress test, etc), and
it all checks out just fine. The cpu stays well below 35C during the
playback (Load is only 20% after all). I've also watched a bunch of
movies since my last posting, just to make sure that there isn't anything bad
going on with the OS, and it all went fine.

So once again, the segfault happens at the more or less random position
in the movie, but always in the same function (put_h264_chroma_mc4_mmx).

By know I'm fairly certain that this is the mplayer bug, but since it is
so rare, and I've already watched that movie with a different player, I
am not that concerned whether it gets resolved... However, if somebody
wants to check it out, I will gladly provide any info required.


On Sun, Mar 11, 2007 at 06:56:49PM -0400, qsd at rogers.com wrote:
> Hi,
> 
> Thanks for the reply.
> 
> I thought about the hardware problem myself, but I find it hard to
> believe. I've been running this system for over a year now, and mplayer
> hasn't crashed _once_ before... It also runs other much more demanding
> tasks (games, video encoding, etc) just fine. However, the system is
> getting a bit old, so who knows... I better run memtest at the next
> reboot.
> 
> I've played HD video before, and it worked just fine. I also play
> x264 encoded video from matroska all the time without any problems.
> There doesn't seem to be anything special about this file that hasn't
> been done already. However, I don't recall playing x264 video at this
> particular resolution.
> 
> Now, since the backtrace looks good to you, I will assume the problem is
> with my setup, not mplayer, and investigate further. I will see if it
> runs on the other machine, maybe a different gcc version...
> 
> Thanks again.
> 
> On Sun, Mar 11, 2007 at 11:37:18AM +0100, Guillaume POIRIER wrote:
> > Hi,
> > 
> > On 3/11/07, qsd at rogers.com <qsd at rogers.com> wrote:
> > >Hi,
> > >
> > >I just tried to watch one movie, and mplayer keeps getting segfaults
> > >during playback... It only happens with this particular movie, rarely at
> > >the same position in the movie, but I haven't been able to watch more
> > >than about 15 min without mplayer crashing... And it works just fine
> > >with all the other movies.
> > 
> > If problems happen at random position, it could be a RAM or
> > CPU-related problem. Make sure that your RAM is fine (run memtest86)
> > and that your CPU runs cool.
> > 
> > 
> > >It _could_ be a problem with the movie, but still, it's not supposed to
> > >crash... And since it crashes at random positions, playing it just fine
> > >on the next run, or playing any part after skipping to it, I'm pretty
> > >sure that's a bug in mplayer.
> > 
> > Could be. Did you test with other files with same codec, and same
> > resolution? Maybe this sample crashes because it stresses your CPU/RAM
> > more than other codecs...
> > 
> > 
> > >The system is amd64 debian, kernel 2.6.17.7, nvidia video, alsa sound.
> > >Debug info from gdb is included below. I checked out the latest mplayer
> > >version just before running this.
> > 
> > I don't see anything suspicious on the backtrace. I'd just suggest
> > checking if your hardware is fine.
> > 
> > Guillaume
> > _______________________________________________
> > MPlayer-users mailing list
> > MPlayer-users at mplayerhq.hu
> > http://lists.mplayerhq.hu/mailman/listinfo/mplayer-users
> _______________________________________________
> MPlayer-users mailing list
> MPlayer-users at mplayerhq.hu
> http://lists.mplayerhq.hu/mailman/listinfo/mplayer-users