Jason R Thorpe <thorpej@wasabisystems.com> writes:

> Yah, but I don't think that's really a problem.  If the page does
> end up getting freed, we can just allocate another one.
> 
> Is there a particular scenario that you're concerned with?

I'm afraid null pointer is dereferenced when accessing something like
uobj->pgops->pgo_put (we test if pgo_put is null or not, but doesn't
test if pgops is null).

enami.