diff mbox series

[v6,08/44] kmsan: mark noinstr as __no_sanitize_memory

Message ID 20220905122452.2258262-9-glider@google.com (mailing list archive)
State New
Headers show
Series Add KernelMemorySanitizer infrastructure | expand

Commit Message

Alexander Potapenko Sept. 5, 2022, 12:24 p.m. UTC 
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 mbox series

Patch

diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index 4f2a819fd60a3..015207a6e2bf5 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -229,7 +229,8 @@  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__ */