On Tue, Apr 16, 2024 at 1:05 AM Kees Cook <keescook@xxxxxxxxxxxx> wrote: > > On Mon, Apr 15, 2024 at 07:13:54AM +0000, Alice Ryhl wrote: > > From: Arnd Bergmann <arnd@xxxxxxxx> > > > > Rust code needs to be able to access _copy_from_user and _copy_to_user > > so that it can skip the check_copy_size check in cases where the length > > is known at compile-time, mirroring the logic for when C code will skip > > check_copy_size. To do this, we ensure that exported versions of these > > methods are available when CONFIG_RUST is enabled. > > > > Alice has verified that this patch passes the CONFIG_TEST_USER_COPY test > > on x86 using the Android cuttlefish emulator. > > > > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> > > Thanks for the updates and the comment on testing. :) > > Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> Thanks for taking a look :) Alice
