diff --git a/mm/kasan/shadow.c b/mm/kasan/shadow.c
index ffaf2df1ed6e4209c6f94ff9d268a938fc7e38c6..9372f0c6f7ec78912b8061dc2466be0dee62a060 100644
--- a/mm/kasan/shadow.c
+++ b/mm/kasan/shadow.c
@@ -83,9 +83,9 @@ void *memcpy(void *dest, const void *src, size_t len)
 #undef memcpy_mcs
 int memcpy_mcs(void *dest, const void *src, size_t len)
 {
-	if (!check_memory_region((unsigned long)src, len, false, _RET_IP_) ||
-	    !check_memory_region((unsigned long)dest, len, true, _RET_IP_))
-		return (unsigned long)len;
+	if (!kasan_check_range(src, len, false, _RET_IP_) ||
+	    !kasan_check_range(dest, len, true, _RET_IP_))
+		return (int)len;
 
 	return __memcpy_mcs(dest, src, len);
 }