https://bugs.freedesktop.org/show_bug.cgi?id=86043
--- Comment #14 from Chris Wilson chris@chris-wilson.co.uk --- (In reply to Emil Velikov from comment #13)
- Invalid memory access in various modules - invalid reads in various steam
runtime components, alarming number of invalid writes in i965_dri.so.
The latter one perhaps should be looked into closer ?
Probably not, that is just valgrind not understanding GEM and its ioctls. You need to use a libdrm compiled with --enable-valgrind to suppress the false positives.