Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Sun, 7 May 2023 17:46:52 -0700
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Peng Zhang <perlyzhang@gmail.com>
Cc:     "Liam R. Howlett" <Liam.Howlett@Oracle.com>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, maple-tree@lists.infradead.org,
        Peng Zhang <zhangpeng.00@bytedance.com>
Subject: Re: [PATCH] maple_tree: Fix potential out-of-bounds access in
 mas_wr_end_piv()
Message-Id: <20230507174652.65fb5725c3a72dd293d417b3@linux-foundation.org>
In-Reply-To: <1570feed-489c-82f7-8d6b-9f53e9ebb87e@gmail.com>
References: <20230504031422.47506-1-zhangpeng.00@bytedance.com>
        <20230506011447.2e47mf5kwwo4yz4r@revolver>
        <1570feed-489c-82f7-8d6b-9f53e9ebb87e@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Precedence: bulk

On Sat, 6 May 2023 09:48:19 +0800 Peng Zhang <perlyzhang@gmail.com> wrote:

> >> Fixes: 54a611b60590 ("Maple Tree: add new data structure")
> > 
> > Cc stable ?
> I don't know if it should be cc stable since Andrew says it
> always needs to describe user-visible impact.

I suppose we may as well backport it - there may be new users of maple
tree which *do* trigger this, and anyone who who tries to backport
those users into earlier kernels will get a nasty surprise.

So I'll add cc:stable to v3, but I won't queue it as a hotfix, so it's
well tested before we propose the backport.