(In reply to comment #53)
> (In reply to comment #52)
> > I can run youtube for a while, but now Chromium seems to crash it more often
> > in general. Been running for a few days, have had at least 4 crashes. All with
> > about the same fail logs as before.
> 
> Your Youtube / Chromium issue is probably separate and should be tracked
> somewhere else. This report is about a stability regression in 3.15/6-rc
> kernels, which seems to be addressed by Christian's fixes.

Yeah, agree. Your log doesn't show any VM faults at all.

That looks more like a userspace problem triggered by some Chromium operations.