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author | Marco Elver <elver@google.com> | 2019-07-12 06:54:07 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-12 21:05:42 +0300 |
commit | b5f6e0fc7d60e0234dac82498e90dfe9027bad1f (patch) | |
tree | 41492a12b523dbf5af7211b71cdc2569204945f8 /mm/kasan/kasan.h | |
parent | 7d8ad890dad00f6cd64bfb44d9be4fceb10cf819 (diff) | |
download | linux-b5f6e0fc7d60e0234dac82498e90dfe9027bad1f.tar.xz |
mm/kasan: change kasan_check_{read,write} to return boolean
This changes {,__}kasan_check_{read,write} functions to return a boolean
denoting if the access was valid or not.
[sfr@canb.auug.org.au: include types.h for "bool"]
Link: http://lkml.kernel.org/r/20190705184949.13cdd021@canb.auug.org.au
Link: http://lkml.kernel.org/r/20190626142014.141844-3-elver@google.com
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/kasan/kasan.h')
-rw-r--r-- | mm/kasan/kasan.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 1979db4763e2..014f19e76247 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -128,7 +128,15 @@ static inline bool addr_has_shadow(const void *addr) void kasan_poison_shadow(const void *address, size_t size, u8 value); -void check_memory_region(unsigned long addr, size_t size, bool write, +/** + * check_memory_region - Check memory region, and report if invalid access. + * @addr: the accessed address + * @size: the accessed size + * @write: true if access is a write access + * @ret_ip: return address + * @return: true if access was valid, false if invalid + */ +bool check_memory_region(unsigned long addr, size_t size, bool write, unsigned long ret_ip); void *find_first_bad_addr(void *addr, size_t size); |