From: Ben Luo <luoben@linux.alibaba.com>
To: cl@linux.com, penberg@kernel.org, rientjes@google.com,
iamjoonsoo.kim@lge.com, akpm@linux-foundation.org,
vbabka@suse.cz, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: luoben@linux.alibaba.com
Subject: [PATCH] mm/slub: return 0 when object pointer is NULL
Date: Mon, 12 Sep 2022 13:59:39 +0800 [thread overview]
Message-ID: <1662962379-16174-1-git-send-email-luoben@linux.alibaba.com> (raw)
NULL is definitly not a valid address
Signed-off-by: Ben Luo <luoben@linux.alibaba.com>
---
mm/slub.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/slub.c b/mm/slub.c
index 862dbd9..50fad18 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -674,7 +674,7 @@ static inline int check_valid_pointer(struct kmem_cache *s,
void *base;
if (!object)
- return 1;
+ return 0;
base = slab_address(slab);
object = kasan_reset_tag(object);
--
1.8.3.1
next reply other threads:[~2022-09-12 5:59 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-12 5:59 Ben Luo [this message]
2022-09-12 7:18 ` [PATCH] mm/slub: return 0 when object pointer is NULL Hyeonggon Yoo
2022-09-12 7:29 ` Ben Luo
2022-09-12 7:47 ` Hyeonggon Yoo
2022-09-14 2:11 ` [mm/slub] fb670abe87: BUG_kmem_cache_node(Not_tainted):Freechain_corrupt kernel test robot
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