I'm very sorry. It was my mistake. 
it won't cross the border here.

Thanks 


-----Original Message-----
From: Michal Hocko [mailto:mho...@kernel.org] 
Sent: Monday, June 04, 2018 7:20 PM
To: Nixiaoming <nixiaom...@huawei.com>
Cc: a...@linux-foundation.org; vdavydov....@gmail.com; han...@cmpxchg.org; 
garsi...@embeddedor.com; ktk...@virtuozzo.com; stumm...@codeaurora.org; 
linux-kernel@vger.kernel.org; linux...@kvack.org
Subject: Re: [PATCH] mm: Add conditions to avoid out-of-bounds

On Mon 04-06-18 18:37:35, nixiaoming wrote:
> In the function memcg_init_list_lru
> if call goto fail when i == 0, will cause out-of-bounds at lru->node[i]

How? All I can see is that the fail path does
        for (i = i - 1; i >= 0; i--)

so it will not do anything for i=0.
-- 
Michal Hocko
SUSE Labs

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