https://bugs.freedesktop.org/show_bug.cgi?id=64471
--- Comment #17 from Laurent carlier lordheavym@gmail.com --- I can also reproduce the lockup with a Pitcain card mesa-git/llvm-svn with Brutal Legend game. Disabling hyperz fix the issue.
I've uploaded a trace here: http://pkgbuild.com/~lcarlier/traces/BrutalLegend.trace.tar.xz
With this one i can reproduce the lockup.