linux-kernel - Re: [PATCH] maple_tree: Fix potential NULL pointer dereference if mas_pop

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Message-ID: <aPVGqRKFcI1SjZdk@casper.infradead.org>
Date: Sun, 19 Oct 2025 21:14:33 +0100
From: Matthew Wilcox <willy@...radead.org>
To: Huiwen He <hehuiwen@...inos.cn>
Cc: markus.elfring@....de, Liam.Howlett@...cle.com, aliceryhl@...gle.com,
	andrewjballance@...il.com, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, maple-tree@...ts.infradead.org
Subject: Re: [PATCH] maple_tree: Fix potential NULL pointer dereference if
 mas_pop_node() fails

On Sun, Oct 19, 2025 at 07:49:16PM +0800, Huiwen He wrote:
> Hi Markus,
> 
> Thanks for your suggestion.
> The commit description could be improved to better follow the imperative style.
> I'll update it in the later version (maybe v2). 

Do not send a v2 until somebody has a substantive comment.  I suspect
that what you are doing here is wrong, but I lack the understanding to
explain why it is wrong.