From patchwork Sat Jun 10 17:07:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Demi Marie Obenour X-Patchwork-Id: 691597 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 55EA4C7EE2F for ; Sat, 10 Jun 2023 17:08:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230260AbjFJRIA (ORCPT ); Sat, 10 Jun 2023 13:08:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56120 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229456AbjFJRH7 (ORCPT ); Sat, 10 Jun 2023 13:07:59 -0400 Received: from out2-smtp.messagingengine.com (out2-smtp.messagingengine.com [66.111.4.26]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B300C2D68; Sat, 10 Jun 2023 10:07:55 -0700 (PDT) Received: from compute6.internal (compute6.nyi.internal [10.202.2.47]) by mailout.nyi.internal (Postfix) with ESMTP id 76A435C00BA; Sat, 10 Jun 2023 13:07:52 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute6.internal (MEProxy); Sat, 10 Jun 2023 13:07:52 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= invisiblethingslab.com; h=cc:cc:content-transfer-encoding :content-type:content-type:date:date:from:from:in-reply-to :message-id:mime-version:reply-to:sender:subject:subject:to:to; s=fm1; t=1686416872; x=1686503272; bh=CFxrsTHk2WZ2bHj5E7HOWzGC2 M6TbCCvBJcoVes5ASQ=; b=HO0vJtT77+rZndOX90RQX40x6vq642GbuMdxU55Ca zeVatV2LwToz78+BK08NzP769skVN+z1oFdl8bU5R0yZdNJ9jpkOcn2Q/JfzDTQQ Ynz3V4ag043lIML+1y895NbuI+eXWQM+vf0q7tIEhg3Y1irGvhk1r/GeSqC26ceX hATz9XyCucDSV/zhLfdkBcBO/QulWpjU9VY8T2Ehu9xXxtrv56Samma8R/JICMc0 d3uE+rvdtv1Nm19G4eocL0vTbxmsjOc5ljGXADTU7zOnwI41Ii+7deQXrNPM4CJA hLDYENmpLE0N/5ccHG1kBTmUUASAmZ0Vha3NaQ0oDXffw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:content-type:date:date:feedback-id:feedback-id :from:from:in-reply-to:message-id:mime-version:reply-to:sender :subject:subject:to:to:x-me-proxy:x-me-proxy:x-me-sender :x-me-sender:x-sasl-enc; s=fm1; t=1686416872; x=1686503272; bh=C FxrsTHk2WZ2bHj5E7HOWzGC2M6TbCCvBJcoVes5ASQ=; b=NjIw4pICWS+wOmKQm 1JvFxSVOo56p+oLMbtOx+kbeeI6t01RsLM8kprlB/zc679knq1dlFrOL+wE8FEME mmAFpuvGIGrP49cxKoc9kqWhPlX0wpzo6RsFb5N3R67UJ2dptFmLg06xx4lcCyZ7 UlXREv/EdYUaSjvsbWGWYqUgABLfxE9j7iDOgeBiovjD/HzfPodvq+g029XHvUfh 6R7pVnLpqOA8rK5qepvydgnq7z/Y5Rmn8VRt5rket3TftfDCvOD0oT8URRDlfhgR YWiRqygOUFRunE901x96yp3zyPNkOwHDuYirhZkoe6fFfxT2NBDPynKznM6S/HYa zNNsA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrgedutddgudduudcutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd enucfjughrpefhvfevufffkffogggtgfesthekredtredtjeenucfhrhhomhepffgvmhhi ucforghrihgvucfqsggvnhhouhhruceouggvmhhisehinhhvihhsihgslhgvthhhihhngh hslhgrsgdrtghomheqnecuggftrfgrthhtvghrnhephfeggfeiiedtieejgedutdekgfet geehheegteekvefhfefgudehtdevleegueegnecuvehluhhsthgvrhfuihiivgeptdenuc frrghrrghmpehmrghilhhfrhhomhepuggvmhhisehinhhvihhsihgslhgvthhhihhnghhs lhgrsgdrtghomh X-ME-Proxy: Feedback-ID: iac594737:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Sat, 10 Jun 2023 13:07:50 -0400 (EDT) From: Demi Marie Obenour To: Hans de Goede , Mauro Carvalho Chehab , Sakari Ailus , Greg Kroah-Hartman , Juergen Gross , Stefano Stabellini , Oleksandr Tyshchenko , Lee Jones , Andy Lutomirski , Thomas Gleixner , Vincenzo Frascino , Petr Mladek , Steven Rostedt , Sergey Senozhatsky , Andy Shevchenko , Rasmus Villemoes Cc: Demi Marie Obenour , linux-media@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org Subject: [PATCH v2 0/3] Make sscanf() stricter Date: Sat, 10 Jun 2023 13:07:40 -0400 Message-Id: <20230610170743.2510-1-demi@invisiblethingslab.com> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Roger Pau Monné suggested making xenbus_scanf() stricter instead of using a custom parser. Christoph Hellwig asked why the normal vsscanf() cannot be made stricter. Richard Weinberger mentioned Linus Torvalds’s suggestion of using ! to allow overflow. Changes since v1: - Better commit messages. - Use ! to explicitly opt-in to allowing overflow. - Treat overflow as a conversion failure instead of returning ERANGE. - Drop the first patch (removal of simple_strtoll()) as it breaks bcache. - Stop skipping spaces in vsscanf() instead of adding a separate vsscanf_strict() function. Demi Marie Obenour (3): vsscanf(): Integer overflow is a conversion failure vsscanf(): do not skip spaces Strict XenStore entry parsing .../hive_isp_css_include/platform_support.h | 1 - drivers/xen/xenbus/xenbus_xs.c | 17 ++-- include/linux/limits.h | 1 + include/linux/mfd/wl1273-core.h | 3 - include/vdso/limits.h | 3 + lib/vsprintf.c | 90 +++++++++++++------ 6 files changed, 80 insertions(+), 35 deletions(-)