diff options
| -rw-r--r-- | MAINTAINERS | 2 | ||||
| -rw-r--r-- | include/linux/kasan-checks.h | 12 | ||||
| -rw-r--r-- | mm/kasan/kasan.c | 12 |
3 files changed, 25 insertions, 1 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 374ffa2d81b77..8b92445561b67 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6242,7 +6242,7 @@ S: Maintained F: arch/*/include/asm/kasan.h F: arch/*/mm/kasan_init* F: Documentation/kasan.txt -F: include/linux/kasan.h +F: include/linux/kasan*.h F: lib/test_kasan.c F: mm/kasan/ F: scripts/Makefile.kasan diff --git a/include/linux/kasan-checks.h b/include/linux/kasan-checks.h new file mode 100644 index 0000000000000..b7f8aced78707 --- /dev/null +++ b/include/linux/kasan-checks.h @@ -0,0 +1,12 @@ +#ifndef _LINUX_KASAN_CHECKS_H +#define _LINUX_KASAN_CHECKS_H + +#ifdef CONFIG_KASAN +void kasan_check_read(const void *p, unsigned int size); +void kasan_check_write(const void *p, unsigned int size); +#else +static inline void kasan_check_read(const void *p, unsigned int size) { } +static inline void kasan_check_write(const void *p, unsigned int size) { } +#endif + +#endif diff --git a/mm/kasan/kasan.c b/mm/kasan/kasan.c index e5beb40d97b1c..18b6a2b8d1835 100644 --- a/mm/kasan/kasan.c +++ b/mm/kasan/kasan.c @@ -299,6 +299,18 @@ static void check_memory_region(unsigned long addr, check_memory_region_inline(addr, size, write, ret_ip); } +void kasan_check_read(const void *p, unsigned int size) +{ + check_memory_region((unsigned long)p, size, false, _RET_IP_); +} +EXPORT_SYMBOL(kasan_check_read); + +void kasan_check_write(const void *p, unsigned int size) +{ + check_memory_region((unsigned long)p, size, true, _RET_IP_); +} +EXPORT_SYMBOL(kasan_check_write); + #undef memset void *memset(void *addr, int c, size_t len) { |