From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5CDC71B7E3; Mon, 15 Jan 2024 23:27:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="opdx5ahX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ACB2EC433C7; Mon, 15 Jan 2024 23:27:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1705361241; bh=4k9GUBLYvchpOD/KUw5lkivxzcmbwmvaOSYuP68VHJU=; h=From:To:Cc:Subject:Date:From; b=opdx5ahXb2bx37XjH6fF3x9WzUT0tKbz9MG9b81Bu+WHWkZM5E3Gc6UT4lsVjW+A6 +AK6IgGtO/+xsMf1jb/yW28KUr67rFINhNxE0WdBO4b7jI2heLB2/+AI7zEQSxaeOI N10qTw/CvBMDXFjyHrZ6YfEtjQnnEDFZmQ1lmRz8AS9jd5+0DVMM9S529p9pF+t//u VMMqHcmS2Mas3FYnWi7Tyon28Pk3eO9W6JikVg6TAyKoN2VDU/8fcAp9URUFZfp1UH kr2byTPk/MYa8+O6dH2nN76H3SDoujzntF/XSamRh2Qr3m4fXdHGSAidmFUJvneOot D/TJT3A5zZtJQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Dmitry Antipov , Christian Brauner , Sasha Levin , airlied@redhat.com, code@siddh.me, mcgrof@kernel.org, pstanner@redhat.com, ddiss@suse.de, nick.alcock@oracle.com Subject: [PATCH AUTOSEL 5.15 01/12] watch_queue: fix kcalloc() arguments order Date: Mon, 15 Jan 2024 18:26:46 -0500 Message-ID: <20240115232718.209642-1-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.15.147 Content-Transfer-Encoding: 8bit From: Dmitry Antipov [ Upstream commit 1bfc466b13cf6652ba227c282c27a30ffede69a5 ] When compiling with gcc version 14.0.0 20231220 (experimental) and W=1, I've noticed the following warning: kernel/watch_queue.c: In function 'watch_queue_set_size': kernel/watch_queue.c:273:32: warning: 'kcalloc' sizes specified with 'sizeof' in the earlier argument and not in the later argument [-Wcalloc-transposed-args] 273 | pages = kcalloc(sizeof(struct page *), nr_pages, GFP_KERNEL); | ^~~~~~ Since 'n' and 'size' arguments of 'kcalloc()' are multiplied to calculate the final size, their actual order doesn't affect the result and so this is not a bug. But it's still worth to fix it. Signed-off-by: Dmitry Antipov Link: https://lore.kernel.org/r/20231221090139.12579-1-dmantipov@yandex.ru Signed-off-by: Christian Brauner Signed-off-by: Sasha Levin --- kernel/watch_queue.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/watch_queue.c b/kernel/watch_queue.c index ae31bf8d2feb..bf86e1d71cd3 100644 --- a/kernel/watch_queue.c +++ b/kernel/watch_queue.c @@ -275,7 +275,7 @@ long watch_queue_set_size(struct pipe_inode_info *pipe, unsigned int nr_notes) goto error; ret = -ENOMEM; - pages = kcalloc(sizeof(struct page *), nr_pages, GFP_KERNEL); + pages = kcalloc(nr_pages, sizeof(struct page *), GFP_KERNEL); if (!pages) goto error; -- 2.43.0