From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C3006C6379D for ; Sun, 22 Nov 2020 23:05:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8DC1820789 for ; Sun, 22 Nov 2020 23:05:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=hansenpartnership.com header.i=@hansenpartnership.com header.b="WmZvrZ8S"; dkim=pass (1024-bit key) header.d=hansenpartnership.com header.i=@hansenpartnership.com header.b="WmZvrZ8S" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726641AbgKVXEo (ORCPT ); Sun, 22 Nov 2020 18:04:44 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45216 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725788AbgKVXEm (ORCPT ); Sun, 22 Nov 2020 18:04:42 -0500 Received: from bedivere.hansenpartnership.com (bedivere.hansenpartnership.com [IPv6:2607:fcd0:100:8a00::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB334C0613CF; Sun, 22 Nov 2020 15:04:41 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by bedivere.hansenpartnership.com (Postfix) with ESMTP id 587D812808F8; Sun, 22 Nov 2020 15:04:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=hansenpartnership.com; s=20151216; t=1606086281; bh=ampKVWKUqLiKYyObj0dhEgltdPGbsuliUrstEBadWMw=; h=Message-ID:Subject:From:To:Date:In-Reply-To:References:From; b=WmZvrZ8SISP4O7CkmRRwRn7Ww4EqbFeoj9AudkGWHrTHPvBGVyYGXPtxxL5/3UBwZ KEGMUiR7FBhAVO42W5uBkyouydambEWUMRvvMR32eyWutkJh8vdHwfKrPde3Z6lPQr zwZuERjUvzNlbmlNByqn4M9h7sLDVk7BBiQeo3h4= Received: from bedivere.hansenpartnership.com ([127.0.0.1]) by localhost (bedivere.hansenpartnership.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ANo_7oL4BAZt; Sun, 22 Nov 2020 15:04:41 -0800 (PST) Received: from jarvis.int.hansenpartnership.com (unknown [IPv6:2601:600:8280:66d1::527]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by bedivere.hansenpartnership.com (Postfix) with ESMTPSA id 9178D12808F6; Sun, 22 Nov 2020 15:04:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=hansenpartnership.com; s=20151216; t=1606086281; bh=ampKVWKUqLiKYyObj0dhEgltdPGbsuliUrstEBadWMw=; h=Message-ID:Subject:From:To:Date:In-Reply-To:References:From; b=WmZvrZ8SISP4O7CkmRRwRn7Ww4EqbFeoj9AudkGWHrTHPvBGVyYGXPtxxL5/3UBwZ KEGMUiR7FBhAVO42W5uBkyouydambEWUMRvvMR32eyWutkJh8vdHwfKrPde3Z6lPQr zwZuERjUvzNlbmlNByqn4M9h7sLDVk7BBiQeo3h4= Message-ID: Subject: Re: [PATCH 000/141] Fix fall-through warnings for Clang From: James Bottomley To: Finn Thain , Miguel Ojeda Cc: Kees Cook , Jakub Kicinski , "Gustavo A. R. Silva" , linux-kernel , alsa-devel@alsa-project.org, amd-gfx@lists.freedesktop.org, bridge@lists.linux-foundation.org, ceph-devel@vger.kernel.org, cluster-devel@redhat.com, coreteam@netfilter.org, devel@driverdev.osuosl.org, dm-devel@redhat.com, drbd-dev@lists.linbit.com, dri-devel@lists.freedesktop.org, GR-everest-linux-l2@marvell.com, GR-Linux-NIC-Dev@marvell.com, intel-gfx@lists.freedesktop.org, intel-wired-lan@lists.osuosl.org, keyrings@vger.kernel.org, linux1394-devel@lists.sourceforge.net, linux-acpi@vger.kernel.org, linux-afs@lists.infradead.org, Linux ARM , linux-arm-msm@vger.kernel.org, linux-atm-general@lists.sourceforge.net, linux-block@vger.kernel.org, linux-can@vger.kernel.org, linux-cifs@vger.kernel.org, Linux Crypto Mailing List , linux-decnet-user@lists.sourceforge.net, Ext4 Developers List , linux-fbdev@vger.kernel.org, linux-geode@lists.infradead.org, linux-gpio@vger.kernel.org, linux-hams@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-i3c@lists.infradead.org, linux-ide@vger.kernel.org, linux-iio@vger.kernel.org, linux-input , linux-integrity@vger.kernel.org, linux-mediatek@lists.infradead.org, Linux Media Mailing List , linux-mmc@vger.kernel.org, Linux-MM , linux-mtd@lists.infradead.org, linux-nfs@vger.kernel.org, linux-rdma@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-scsi@vger.kernel.org, linux-sctp@vger.kernel.org, linux-security-module@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-usb@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-wireless , Network Development , netfilter-devel@vger.kernel.org, nouveau@lists.freedesktop.org, op-tee@lists.trustedfirmware.org, oss-drivers@netronome.com, patches@opensource.cirrus.com, rds-devel@oss.oracle.com, reiserfs-devel@vger.kernel.org, samba-technical@lists.samba.org, selinux@vger.kernel.org, target-devel@vger.kernel.org, tipc-discussion@lists.sourceforge.net, usb-storage@lists.one-eyed-alien.net, virtualization@lists.linux-foundation.org, wcn36xx@lists.infradead.org, "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , xen-devel@lists.xenproject.org, linux-hardening@vger.kernel.org, Nick Desaulniers , Nathan Chancellor , Miguel Ojeda , Joe Perches Date: Sun, 22 Nov 2020 15:04:36 -0800 In-Reply-To: References: <20201120105344.4345c14e@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> <202011201129.B13FDB3C@keescook> <20201120115142.292999b2@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> <202011220816.8B6591A@keescook> <9b57fd4914b46f38d54087d75e072d6e947cb56d.camel@HansenPartnership.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.34.4 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org On Mon, 2020-11-23 at 09:54 +1100, Finn Thain wrote: > But is anyone keeping score of the regressions? If unreported bugs > count, what about unreported regressions? Well, I was curious about the former (obviously no tool will tell me about the latter), so I asked git what patches had a fall-through series named in a fixes tag and these three popped out: 9cf51446e686 bpf, powerpc: Fix misuse of fallthrough in bpf_jit_comp() 6a9dc5fd6170 lib: Revert use of fallthrough pseudo-keyword in lib/ 91dbd73a1739 mips/oprofile: Fix fallthrough placement I don't think any of these is fixing a significant problem, but they did cause someone time and trouble to investigate. James