https://bugs.freedesktop.org/show_bug.cgi?id=90537
--- Comment #19 from Christian König deathsimple@vodafone.de --- (In reply to pstglia from comment #16)
The mesa version is uninteresting, but what kernel version are you using?
Older kernels have stability problems when you unmap the BO VA. That's why we don't use it in mesa by default.
Regards, Christian.
We are using kernel 4.0.3
Strange, that kernel should work perfectly fine.