From patchwork Fri Oct 11 09:57:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 13832314 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 553F9CFD316 for ; Fri, 11 Oct 2024 09:57:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C2A7F10EA9D; Fri, 11 Oct 2024 09:57:29 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="pLi/WQ0v"; dkim-atps=neutral Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by gabe.freedesktop.org (Postfix) with ESMTPS id 435B910EA9D for ; Fri, 11 Oct 2024 09:57:28 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 45D1F5C5B10; Fri, 11 Oct 2024 09:57:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 575F4C4CEC3; Fri, 11 Oct 2024 09:57:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728640647; bh=hsOb7L5eWKwXJPJsWh5XXOI6Us1bIOBJXOrfGRTSao0=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=pLi/WQ0vGwyDb2dzl9+Fq4w/QFVDnyZE6c/iZvu8EV7OHL8g/K/HqY5N0QnCuobzj 2XljCRFYb6J2i9a+IPgFu9vfq6lIWXrxPoYbrzW3LEyHzcJ3rlxoqGV89G+68RGGcw xXxFfef56sNMj9AlbSN4d83ubSkb6oWg5cdXl6qdB/B92cDbfeMMDLXofG3YUEuIcC gEw/pxKNGT3ManoSs/S7/JXjyHatU40L45dwZV7oVUtc4EwtiCaPnxFh29grf0qJyM rDN6V0+atZpvZPLhTAMbyn43fRod2bs+sHBnSSK7JvlyEUKN8BPyTkdIps3q0C3fIs V0IDwhUR/KxsQ== From: Simon Horman Date: Fri, 11 Oct 2024 10:57:11 +0100 Subject: [PATCH net-next 2/3] net: txgbe: Pass string literal as format argument of alloc_workqueue() MIME-Version: 1.0 Message-Id: <20241011-string-thing-v1-2-acc506568033@kernel.org> References: <20241011-string-thing-v1-0-acc506568033@kernel.org> In-Reply-To: <20241011-string-thing-v1-0-acc506568033@kernel.org> To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Woojung Huh , Andrew Lunn , Florian Fainelli , Vladimir Oltean , Richard Cochran , Jiawen Wu , Mengyuan Lou , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , Jeffrey Hugo , Carl Vanderlip , Oded Gabbay , UNGLinuxDriver@microchip.com, netdev@vger.kernel.org, llvm@lists.linux.dev, linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org X-Mailer: b4 0.14.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Recently I noticed that both gcc-14 and clang-18 report that passing a non-string literal as the format argument of clkdev_create() is potentially insecure. E.g. clang-18 says: .../txgbe_phy.c:582:35: warning: format string is not a string literal (potentially insecure) [-Wformat-security] 581 | clock = clkdev_create(clk, NULL, clk_name); | ^~~~~~~~ .../txgbe_phy.c:582:35: note: treat the string as an argument to avoid this 581 | clock = clkdev_create(clk, NULL, clk_name); | ^ | "%s", It is always the case where the contents of clk_name is safe to pass as the format argument. That is, in my understanding, it never contains any format escape sequences. However, it seems better to be safe than sorry. And, as a bonus, compiler output becomes less verbose by addressing this issue as suggested by clang-18. Compile tested only. Signed-off-by: Simon Horman --- drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c index 3dd89dafe7c7..a0e4920b4761 100644 --- a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c @@ -578,7 +578,7 @@ static int txgbe_clock_register(struct txgbe *txgbe) if (IS_ERR(clk)) return PTR_ERR(clk); - clock = clkdev_create(clk, NULL, clk_name); + clock = clkdev_create(clk, NULL, "%s", clk_name); if (!clock) { clk_unregister(clk); return -ENOMEM;