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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 D780FC432C3 for ; Wed, 27 Nov 2019 19:26:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B190720835 for ; Wed, 27 Nov 2019 19:26:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="U+xus56I" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727269AbfK0T0X (ORCPT ); Wed, 27 Nov 2019 14:26:23 -0500 Received: from mail-pj1-f67.google.com ([209.85.216.67]:35465 "EHLO mail-pj1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727125AbfK0T0W (ORCPT ); Wed, 27 Nov 2019 14:26:22 -0500 Received: by mail-pj1-f67.google.com with SMTP id s8so10495863pji.2 for ; Wed, 27 Nov 2019 11:26:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=eVNNKDEwK+00GI4nXd9IX+dWdzOAiwJNjdPjOU+ejY0=; b=U+xus56I5dr6Aqz7wXSwbowuREWFV2uxsdtZciqEjc59w56SO7/eYwEFYbRbNq7t3r /z5JwgMRey9oFd9dGmRbOwyDt/UxPsAyJbhZY8wmo2Fl9A1YwXkrd8PQPXBMwFYhmxcS AZzznEDKcHT6GlYef5U3newa8JYZBvm14OOSI= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=eVNNKDEwK+00GI4nXd9IX+dWdzOAiwJNjdPjOU+ejY0=; b=S84U3jyOHEoa0y9hMhyPV2zYJtCeMsB9Hyhl+7qnbdyuNVbiXZIc18PJd0pf0LD7X4 HMRtnvWE3YglY06RlZzK6uNa4ec4W9mwgK25lGxkGKhyi6juBBgCefZ1QvDal7C/xDiP Z4xGLcykJSSBciSmSmbmKYLG5KPkpm3bdIMOzumQH7qDVkfp9N23j4buvJdLeJHpFqq+ SkzkkyFN4hkQimQJcnoFaqV/iQNGwqkuVIJpQ4b4X30xmY++29BCM96arOLqJkDKzEdP g6s6jVnGRkTrarjVT7XvRbZFrJkL9DvEKVXo+e84r1J8M1D7aUl6p8tIoYMnYfvExoD7 ABNw== X-Gm-Message-State: APjAAAXEpbq3TtkcTE6j48riUCmymO9WY1800a+cfknyHBP9BGFkc4r1 W6HEmAYQ5TauyVPj6jJuIuU8Aw== X-Google-Smtp-Source: APXvYqxyZCRdeC8jUm68R3lJljLtvG9x0YOYSTxJ4Qiw8dH/Q8nTdrPSERPqvHWi0TfhZ5eZN1cVIA== X-Received: by 2002:a17:902:bf01:: with SMTP id bi1mr5940322plb.241.1574882781626; Wed, 27 Nov 2019 11:26:21 -0800 (PST) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id 20sm16837474pgw.71.2019.11.27.11.26.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Nov 2019 11:26:20 -0800 (PST) Date: Wed, 27 Nov 2019 11:26:19 -0800 From: Kees Cook To: syzbot Cc: 00moses.alexander00@gmail.com, axboe@kernel.dk, bvanassche@acm.org, hare@suse.com, hch@lst.de, idryomov@gmail.com, joseph.qi@linux.alibaba.com, jthumshirn@suse.de, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, ming.lei@redhat.com, sagi@grimberg.me, snitzer@redhat.com, syzkaller-bugs@googlegroups.com, tj@kernel.org, torvalds@linux-foundation.org, wgh@torlan.ru, zkabelac@redhat.com Subject: Re: WARNING in generic_make_request_checks Message-ID: <201911271124.F01A0B37@keescook> References: <201911262053.C6317530@keescook> <00000000000085ce5905984f2c8b@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00000000000085ce5905984f2c8b@google.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 26, 2019 at 11:45:00PM -0800, syzbot wrote: > Hello, > > syzbot has tested the proposed patch and the reproducer did not trigger > crash: > > Reported-and-tested-by: > syzbot+21cfe1f803e0e158acf1@syzkaller.appspotmail.com > > Tested on: > > commit: 8b2ded1c block: don't warn when doing fsync on read-only d.. > git tree: > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > kernel config: https://syzkaller.appspot.com/x/.config?x=d727e10a28207217 > dashboard link: https://syzkaller.appspot.com/bug?extid=21cfe1f803e0e158acf1 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > Note: testing is done by a robot and is best-effort only. It seems for successful tests, I still need to tell syzbot that this is fixed? #syz fix: block: don't warn when doing fsync on read-only devices -- Kees Cook