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| author | Moritz Fischer <mdf@kernel.org> | 2019-09-03 19:35:07 -0700 |
|---|---|---|
| committer | Moritz Fischer <mdf@kernel.org> | 2019-09-03 19:35:07 -0700 |
| commit | af9ca4b0bd0502bb134f18d394a613be371d2352 (patch) | |
| tree | 37b1159d4456e223981dddde4795f2061c83d14c /mm/kasan/common.c | |
| parent | cbb4a74478e9eef0f8ef437e95ef7645008988f7 (diff) | |
| parent | 99097a214b0c15f7595ac8f2788662f3941c1992 (diff) | |
Merge branch 'char-misc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc into fpga-dfl-for-5.4
Diffstat (limited to 'mm/kasan/common.c')
| -rw-r--r-- | mm/kasan/common.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/mm/kasan/common.c b/mm/kasan/common.c index 2277b82902d8..95d16a42db6b 100644 --- a/mm/kasan/common.c +++ b/mm/kasan/common.c @@ -407,8 +407,14 @@ static inline bool shadow_invalid(u8 tag, s8 shadow_byte) if (IS_ENABLED(CONFIG_KASAN_GENERIC)) return shadow_byte < 0 || shadow_byte >= KASAN_SHADOW_SCALE_SIZE; - else - return tag != (u8)shadow_byte; + + /* else CONFIG_KASAN_SW_TAGS: */ + if ((u8)shadow_byte == KASAN_TAG_INVALID) + return true; + if ((tag != KASAN_TAG_KERNEL) && (tag != (u8)shadow_byte)) + return true; + + return false; } static bool __kasan_slab_free(struct kmem_cache *cache, void *object, |