diff options
Diffstat (limited to 'include/linux/kasan-checks.h')
| -rw-r--r-- | include/linux/kasan-checks.h | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/include/linux/kasan-checks.h b/include/linux/kasan-checks.h index a61dc075e2ce..221f05fbddd7 100644 --- a/include/linux/kasan-checks.h +++ b/include/linux/kasan-checks.h @@ -2,9 +2,28 @@ #ifndef _LINUX_KASAN_CHECKS_H #define _LINUX_KASAN_CHECKS_H -#if defined(__SANITIZE_ADDRESS__) || defined(__KASAN_INTERNAL) -void kasan_check_read(const volatile void *p, unsigned int size); -void kasan_check_write(const volatile void *p, unsigned int size); +/* + * __kasan_check_*: Always available when KASAN is enabled. This may be used + * even in compilation units that selectively disable KASAN, but must use KASAN + * to validate access to an address. Never use these in header files! + */ +#ifdef CONFIG_KASAN +void __kasan_check_read(const volatile void *p, unsigned int size); +void __kasan_check_write(const volatile void *p, unsigned int size); +#else +static inline void __kasan_check_read(const volatile void *p, unsigned int size) +{ } +static inline void __kasan_check_write(const volatile void *p, unsigned int size) +{ } +#endif + +/* + * kasan_check_*: Only available when the particular compilation unit has KASAN + * instrumentation enabled. May be used in header files. + */ +#ifdef __SANITIZE_ADDRESS__ +#define kasan_check_read __kasan_check_read +#define kasan_check_write __kasan_check_write #else static inline void kasan_check_read(const volatile void *p, unsigned int size) { } |