(In reply to Michel Dänzer from comment #3)
> (In reply to Alexander Tsoy from comment #0)
> > 
> > linux-4.17.x with CONFIG_TRANSPARENT_HUGEPAGE=y = OK
> > linux-4.17.x with CONFIG_TRANSPARENT_HUGEPAGE=n + mesa-8.0.x / mesa-8.1.x =
> > hang
> 
> Did you swap CONFIG_TRANSPARENT_HUGEPAGE=y/n here? I.e.
> CONFIG_TRANSPARENT_HUGEPAGE=y is bad, CONFIG_TRANSPARENT_HUGEPAGE=n is good?

Yes, after getting a clue that this bug could be related to transparent huge
pages, I tried to disable CONFIG_TRANSPARENT_HUGEPAGE in 4.17.6 kernel. This
results in the same hang I had with 4.14.x kernels.

Note that transparent huge pages must be disabled at build time. cmdline option
" transparent_hugepage=never" doesn't change anything.