| Message ID | 20220701142310.2188015-9-glider@google.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Add KernelMemorySanitizer infrastructure | expand |
On Fri, 1 Jul 2022 at 16:23, Alexander Potapenko <glider@google.com> 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@google.com> Reviewed-by: Marco Elver <elver@google.com> > --- > 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 >
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__ */
noinstr functions should never be instrumented, so make KMSAN skip them by applying the __no_sanitize_memory attribute. Signed-off-by: Alexander Potapenko <glider@google.com> --- 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(-)