empathy __memcmp_sse4_1: empathy-call was killed by signal 11 (SIGSEGV)

[Oleksij Rempel]

If i start video call, empathy-call will die on this function __memcmp_sse4_1
Initial problem is in libx264-123 and can be reproduced with "gst-launch-1.0 -v v4l2src ! x264enc ! fakesink" too.

This bug exist only on some CPUs. For example same version works on i5-3317U but fail i7-2677M.

Since libx264-123 really old, i assume never version may fix this crash.

For empathy, best workaround is to remove gstreamer1.0-plugins-ugly together with libx264-123.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: libx264-123 2:0.123.2189+git35cf912-1
Uname: Linux 3.12.0-rc3-wl x86_64
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
Date: Fri Oct 18 12:18:01 2013
Dependencies:
 gcc-4.8-base 4.8.1-10ubuntu8
 libc6 2.17-93ubuntu4
 libgcc1 1:4.8.1-10ubuntu8
 multiarch-support 2.17-93ubuntu4
InstallationDate: Installed on 2013-10-09 (9 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Beta amd64 (20131008)
MarkForUpload: True
SourcePackage: x264
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[borgotretre (borgotretre)]

maybe it is related to

https://bugs.launchpad.net/ubuntu/+source/libav/+bug/1241777

?

[Sander Brandenburg (sander-brandenburg)]

I experienced the same problem with libx264 (2:0.123.2189+git35) using ffmpeg.

After reading http://ffmpeg.org/pipermail/ffmpeg-devel/2013-March/141083.html I added '-fno-aggressive-loop-optimizations' to CFLAGS and libx264 does not crash on initialization anymore.

[Oleksij Rempel (olerem)]

Thank you Sander,
it fixes this issue for me.