https://bugs.freedesktop.org/show_bug.cgi?id=106225
--- Comment #32 from Luca zapduke@gmail.com --- Happens to me too (kernel 4.17 ubuntu 18.04), especially the first boot of the day I always get black screen after modeset. I haven't tried with KASAN and can't get any log but I suspect is the same issue.
Asrock ab350m pro4 - firmware 4.7 PSU seasonic s12ii ram 2x8 gb kingston hyperx fury 2666 CPU ryzen 2200g