On Thu, Jan 20, 2022 at 04:54:03PM +0000, Russell King (Oracle) wrote: > Well, I think I've adequately explained why I believe: > > pfn_is_valid(page_to_pfn(page)) > > being used as the primary check is substandard, and will likely lead to > a future CVE. When generating an array of struct page's, I believe that > it is the responsibility for the generator to ensure that the array > only contains valid pages. So you're saying that virt_to_page() should be made more expensive?
