https://bugzilla.kernel.org/show_bug.cgi?id=61891
--- Comment #9 from Matthieu Baerts matttbe@gmail.com --- Hello,
As Alex said on FreeDesktop's bugzilla, it looks like this bug might be a duplicate of this one: https://bugs.freedesktop.org/show_bug.cgi?id=70687
There, we can find another call trace of this crash and a bisect. Maybe it can help :-)