On Fri, 1 Jul 2022 at 16:23, Alexander Potapenko <glider@xxxxxxxxxx> wrote: > > noinstr functions should never be instrumented, so make KMSAN skip them > by applying the __no_sanitize_memory attribute. > > Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx> Reviewed-by: Marco Elver <elver@xxxxxxxxxx> > --- > v2: > -- moved this patch earlier in the series per Mark Rutland's request > > Link: https://linux-review.googlesource.com/id/I3c9abe860b97b49bc0c8026918b17a50448dec0d > --- > include/linux/compiler_types.h | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h > index d08dfcb0ac687..fb5777e5228e7 100644 > --- a/include/linux/compiler_types.h > +++ b/include/linux/compiler_types.h > @@ -227,7 +227,8 @@ struct ftrace_likely_data { > /* Section for code which can't be instrumented at all */ > #define noinstr \ > noinline notrace __attribute((__section__(".noinstr.text"))) \ > - __no_kcsan __no_sanitize_address __no_profile __no_sanitize_coverage > + __no_kcsan __no_sanitize_address __no_profile __no_sanitize_coverage \ > + __no_sanitize_memory > > #endif /* __KERNEL__ */ > > -- > 2.37.0.rc0.161.g10f37bed90-goog >
