Comment # 20 on bug 104082 from Stratos Zolotas

(In reply to Michel Dänzer from comment #19)
> 
> That's either simply coincidence, or means the kernel ran out of memory. The
> messages this report is about are triggered by transient memory allocation
> failures, for which there is a fallback path.

Maybe it is a coincidence, for sure I'm not running out of memory when it is
happening and started with kernel 4.15 and (or) Mesa 18.0 without any change on
Virtualbox side. I'll wait for the fix to see what happens...