On Fri, Dec 16, 2022 at 07:32:09PM +0100, Bernard Metzler wrote: > User communication buffer registration lacks check of access > rights for provided address range. Using pin_user_pages_fast() > instead of pin_user_pages() during user page pinning implicitely > introduces the necessary check. It furthermore tries to avoid > grabbing the mmap_read_lock. Huh? What access check? Jason
