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-rw-r--r--mm/kasan/generic.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/kasan/generic.c b/mm/kasan/generic.c
index 5b4c97baa656..4d837ab83f08 100644
--- a/mm/kasan/generic.c
+++ b/mm/kasan/generic.c
@@ -130,9 +130,10 @@ static __always_inline bool memory_is_poisoned_n(const void *addr, size_t size)
if (unlikely(ret)) {
const void *last_byte = addr + size - 1;
s8 *last_shadow = (s8 *)kasan_mem_to_shadow(last_byte);
+ s8 last_accessible_byte = (unsigned long)last_byte & KASAN_GRANULE_MASK;
if (unlikely(ret != (unsigned long)last_shadow ||
- (((long)last_byte & KASAN_GRANULE_MASK) >= *last_shadow)))
+ last_accessible_byte >= *last_shadow))
return true;
}
return false;