linux-kernel - Re: [PATCH -next] mm/memcg: Use struct

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Message-ID: <YbsibBdUFhWGzojj@cmpxchg.org>
Date:   Thu, 16 Dec 2021 12:26:36 +0100
From:   Johannes Weiner <hannes@...xchg.org>
To:     Wang Weiyang <wangweiyang2@...wei.com>
Cc:     mhocko@...nel.org, vdavydov.dev@...il.com,
        akpm@...ux-foundation.org, cgroups@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] mm/memcg: Use struct_size() helper in kzalloc()

On Thu, Dec 16, 2021 at 10:20:24AM +0800, Wang Weiyang wrote:
> Make use of the struct_size() helper instead of an open-coded version, in
> order to avoid any potential type mistakes or integer overflows that, in
> the worst scenario, could lead to heap overflows.
> 
> Link: https://github.com/KSPP/linux/issues/160
> Signed-off-by: Wang Weiyang <wangweiyang2@...wei.com>

Acked-by: Johannes Weiner <hannes@...xchg.org>