Kees Cook <keesc...@chromium.org> writes: > On Thu, Jul 7, 2016 at 4:01 AM, Arnd Bergmann <a...@arndb.de> wrote: >> On Wednesday, July 6, 2016 3:25:20 PM CEST Kees Cook wrote: >>> + >>> + /* Allow kernel rodata region (if not marked as Reserved). */ >>> + if (ptr >= (const void *)__start_rodata && >>> + end <= (const void *)__end_rodata) >>> + return NULL; >> >> Should we explicitly forbid writing to rodata, or is it enough to >> rely on page protection here? > > Hm, interesting. That's a very small check to add. My knee-jerk is to > just leave it up to page protection. I'm on the fence. :)
There are platforms that don't have page protection, so it would be nice if they could at least opt-in to checking for it here. cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
