[PATCH v5 12/37] kmsan: Introduce memset_no_sanitize_memory()
From: Ilya Leoshkevich <iii@linux.ibm.com>
Date: 2024-06-19 15:46:08
Also in:
linux-s390, lkml
Subsystem:
kmsan, the rest · Maintainers:
Alexander Potapenko, Linus Torvalds
Add a wrapper for memset() that prevents unpoisoning. This is useful for filling memory allocator redzones. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> --- include/linux/kmsan.h | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/include/linux/kmsan.h b/include/linux/kmsan.h
index 23de1b3d6aee..5f50885f2023 100644
--- a/include/linux/kmsan.h
+++ b/include/linux/kmsan.h@@ -255,6 +255,14 @@ void kmsan_enable_current(void); */ void kmsan_disable_current(void); +/* + * memset_no_sanitize_memory(): memset() without KMSAN instrumentation. + */ +static inline void *memset_no_sanitize_memory(void *s, int c, size_t n) +{ + return __memset(s, c, n); +} + #else static inline void kmsan_init_shadow(void)
@@ -362,6 +370,11 @@ static inline void kmsan_disable_current(void) { } +static inline void *memset_no_sanitize_memory(void *s, int c, size_t n) +{ + return memset(s, c, n); +} + #endif #endif /* _LINUX_KMSAN_H */
--
2.45.1