On Mon, Jun 13, 2022 at 05:36:43PM +0000, Edgecombe, Rick P wrote: > Is this special kernel address handling only needed because > copy_to_kernel_nofault(), etc call the user helpers? It is to make absolutely sure we don't need to go audit everything, if code is correct without untag_pointer() it will still be correct with it on. Also avoids future bugs due to being robust in general.
