https://bugs.freedesktop.org/show_bug.cgi?id=80419
--- Comment #71 from Nicolai Hähnle nhaehnle@gmail.com --- Hi Kamil, your version of Mesa is too old: it does not contain the GALLIUM_DDEBUG feature yet.
At this point, the most helpful thing for you to do would be to reproduce this with latest development versions (i.e. Git/SVN master) of Mesa and LLVM, and see if you can get an apitrace which reliably reproduces the lockup.