On Thu, 23 Nov 2023 13:02:22 -0500 Peter Xu <peterx@xxxxxxxxxx> wrote: > This is a bug found not by any report but only by code observations. > > When GUP sees a devpmd/devpud and if page==NULL is returned, it means a > fault is probably required. Here falling through when page==NULL can cause > unexpected behavior. > Well this is worrisome. We aren't able to construct a test case to demonstrate this bug? Why is that? Is it perhaps just dead code?
