On Wed, Nov 29, 2017 at 10:50 PM, 'Paul Lawrence' via kasan-dev <[email protected]> wrote: > For now we can hard-code ASAN ABI level 5, since historical clang builds > can't build the kernel anyway. We also need to emulate gcc's > __SANITIZE_ADDRESS__ flag, or memset() calls won't be instrumented. > > Signed-off-by: Greg Hackmann <[email protected]> > Signed-off-by: Paul Lawrence <[email protected]> > > --- > include/linux/compiler-clang.h | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h > index 3b609edffa8f..d02a4df3f473 100644 > --- a/include/linux/compiler-clang.h > +++ b/include/linux/compiler-clang.h > @@ -19,3 +19,11 @@ > > #define randomized_struct_fields_start struct { > #define randomized_struct_fields_end }; > + > +/* all clang versions usable with the kernel support KASAN ABI version 5 */ > +#define KASAN_ABI_VERSION 5 > + > +/* emulate gcc's __SANITIZE_ADDRESS__ flag */ > +#if __has_feature(address_sanitizer) > +#define __SANITIZE_ADDRESS__ > +#endif
Reviewed-by: Dmitry Vyukov <[email protected]>
