Comment # 4 on bug 97500 from Grazvydas Ignotas

Created attachment 126768 [details]
modprobe then rmmod

I've been trying today's drm-next-4.9-wip (merged with 4.8.0-rc7) and the
situation has improved somewhat, doing rmmod just after modprobe succeeds with
a WARN from TTM, but attempts to modprobe it again are failing. If X session is
started/stopped before rmmod, the consequences are more severe, looks like some
sort of corruption.