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 E17FE1D4E00; Wed, 25 Sep 2024 12:17:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727266657; cv=none; b=iIVi1G1Ew8SwJmf1rQQJF4YmO+NfpYMRpnhD4MDfM9NMg3W3w70wDxbMWgYy4BvO+k0uVByGderLslv0JVnLFjzAG/Cd9xWTF4lpsc9xcSrRi/lEKFTddTxMgUyrw0V7Gx6XLPU88I90zGitNpzKy7BvP42N/votQVZIVvWuREI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727266657; c=relaxed/simple; bh=VEA4VGq5kC/9nf4ZTHNm/ys5iKz1PWSfsI27jXlN8a0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=uCy6FZ2sSUE/M6XVnJtqGkRF2iA8by3LB4VqUFYXMP57GgEQkrN2yi28IuNvjD3LDuSoZDAlvv6Nzkeh5Nve0tB5eXxDnELDfMKqSM5CAv5Roez/bequubVLM5Sk8DQXj8JXFDZ0l61jP7lHmkPkAs8q89TY/zGYFF4Eh+4UUkg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tq9FaHbN; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="tq9FaHbN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 69FF0C4CEC7; Wed, 25 Sep 2024 12:17:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1727266656; bh=VEA4VGq5kC/9nf4ZTHNm/ys5iKz1PWSfsI27jXlN8a0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tq9FaHbNpl3w9of1O63NztYuRlLOXUwNU5HxJsoaEd+DjayHK7Vs40cYZsICkfRRS O+M/gA/+Yb9+nhfq999gleajG8GyIfasJV7svXNyKZmNT+ropgA83cQd423byFa73I snipd92vU4K5mwCAfRTWiYoyIwaNOkWgZ+o2lEVwe5rcJd72fIxIQbArMw9fChMzmS uXxECjzsXYGiwYB5fidSCjVuJnelRa8NxHSIYYtw31MxZoRpRNbOntwsykJuKKRGfw tiBIj5938nqIMMNB2XYa9rqIbLW3xL1R7ngfv2H5bUEm2lCROvZrtxolE9JLOPPq7V 5b3I6N7s9RODw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Geert Uytterhoeven , Rob Herring , Sasha Levin , saravanak@google.com, devicetree@vger.kernel.org Subject: [PATCH AUTOSEL 6.6 125/139] of/irq: Refer to actual buffer size in of_irq_parse_one() Date: Wed, 25 Sep 2024 08:09:05 -0400 Message-ID: <20240925121137.1307574-125-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240925121137.1307574-1-sashal@kernel.org> References: <20240925121137.1307574-1-sashal@kernel.org> 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 6.6.52 Content-Transfer-Encoding: 8bit From: Geert Uytterhoeven [ Upstream commit 39ab331ab5d377a18fbf5a0e0b228205edfcc7f4 ] Replace two open-coded calculations of the buffer size by invocations of sizeof() on the buffer itself, to make sure the code will always use the actual buffer size. Signed-off-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/817c0b9626fd30790fc488c472a3398324cfcc0c.1724156125.git.geert+renesas@glider.be Signed-off-by: Rob Herring (Arm) Signed-off-by: Sasha Levin --- drivers/of/irq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 8fd63100ba8f0..d67b69cb84bfe 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -357,8 +357,8 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar addr = of_get_property(device, "reg", &addr_len); /* Prevent out-of-bounds read in case of longer interrupt parent address size */ - if (addr_len > (3 * sizeof(__be32))) - addr_len = 3 * sizeof(__be32); + if (addr_len > sizeof(addr_buf)) + addr_len = sizeof(addr_buf); if (addr) memcpy(addr_buf, addr, addr_len); -- 2.43.0