From: Markus Elfring <Markus.Elfring@web.de>
To: Huiwen He <hehuiwen@kylinos.cn>,
maple-tree@lists.infradead.org, linux-mm@kvack.org,
"Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
Alice Ryhl <aliceryhl@google.com>,
Andrew Ballance <andrewjballance@gmail.com>
Subject: Re: [PATCH] maple_tree: Fix potential NULL pointer dereference if mas_pop_node() fails
Date: Sat, 18 Oct 2025 18:38:11 +0200 [thread overview]
Message-ID: <9092f8af-72d9-472e-8d5c-f950c8ce782d@web.de> (raw)
In-Reply-To: <20251018152305.1612722-1-hehuiwen@kylinos.cn>
> mas_pop_node() may return NULL when memory allocation fails or when
> mas->sheaf is invalid. Several callers of mas_pop_node() did not check
> the return value and directly dereferenced the pointer, which could
> lead to a NULL pointer dereference and kernel crash.
Will another imperative wording approach become more helpful for an improved
change description?
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.18-rc1#n94
Regards,
Markus
next prev parent reply other threads:[~2025-10-18 16:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-18 15:23 Huiwen He
2025-10-18 16:38 ` Markus Elfring [this message]
2025-10-19 0:32 ` Matthew Wilcox
2025-10-19 11:49 ` Huiwen He
2025-10-19 20:14 ` Matthew Wilcox
2025-10-21 14:19 ` Liam R. Howlett
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