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=-10.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 13581C2D0A8 for ; Mon, 28 Sep 2020 15:01:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C72F32078B for ; Mon, 28 Sep 2020 15:01:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="tVc9Ks8A" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726534AbgI1PBW (ORCPT ); Mon, 28 Sep 2020 11:01:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726310AbgI1PBW (ORCPT ); Mon, 28 Sep 2020 11:01:22 -0400 Received: from mail-il1-x144.google.com (mail-il1-x144.google.com [IPv6:2607:f8b0:4864:20::144]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 21B61C0613CE for ; Mon, 28 Sep 2020 08:01:22 -0700 (PDT) Received: by mail-il1-x144.google.com with SMTP id h2so1531871ilo.12 for ; Mon, 28 Sep 2020 08:01:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=wz4/cJUtcGrHgQdHqiJQL66PoALmhO/Jeqp0NNqQOYA=; b=tVc9Ks8AyUnx5Ss4K4lY/dnw7ZGtH8ZOnEEFa2u9Jjf09E8vDx9EKir5p58zO9G8Zz cuFKzICCDEomikQ0nnJK2BO2HxwU6lcjema4++Ol0MI0zzfCHyAxGQdjkdbikOqetycM 5trJgK5UoUBnHeq2nwfJDjpCPLxBwxDmDltnRMiC7AFln4LZbFEEMRAwSviBt2UGqot9 XVEXuAcmxj7LWRD7pBpCtqrF1zBmoG+XG5vhXEdf/PLYyID9e4UjKi7yDs46nXx72Ayt DVY9hFBfRUtF0gNgDak4aAQhWfLa7ftyvFzEHxyhV6kBFl5oeQR8ViB2eCZgq0F8Q6g+ 0Agw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=wz4/cJUtcGrHgQdHqiJQL66PoALmhO/Jeqp0NNqQOYA=; b=pmGDngzYn0+6CxSR1ZBDfdmEL2aF+HMpCMOicl6z/+8bNo9uBdavCm+xiKcxoygial sq7P7C4LkNmbDlqQbX7+qCNHso+y082rjv/M7NDuGF7W57dbMfzWu0SW/z4iZHbC7sje bQT6qwIXt9ven54EHxndz6KPLqYiu0m9IvXg//rAdP4lXfvPBEcIkmDtKZLimC2loPYy /a/8hqs+JdNqrCUY3LOpRjSzSKWXmmSwMMkPauaKniCdXItotFgGKKIXmyM/oEddj1h6 PeIBMiIuWeYwfJbUx9gG50nfhUN/zH4laPpImFUc4sma86H1xQrnG1afT9Jd62y43zT9 bNTQ== X-Gm-Message-State: AOAM531W+pmhJbJ6guFfHGKIzSxLFJzyJPbtIFuD08YufL31CjweFx9a ag0mm3gKqCV+Azk0WIyF8NyjtQ== X-Google-Smtp-Source: ABdhPJzhsqplk4CkEQgE6tO03x+gt13937ez/h3kCBx/Qs/poGnRb2j4ITML8gMSoKHsg6RduIJA4Q== X-Received: by 2002:a92:3554:: with SMTP id c81mr1594067ila.265.1601305281132; Mon, 28 Sep 2020 08:01:21 -0700 (PDT) Received: from [192.168.1.30] ([65.144.74.34]) by smtp.gmail.com with ESMTPSA id t12sm733682ilh.18.2020.09.28.08.01.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 28 Sep 2020 08:01:20 -0700 (PDT) Subject: Re: possible deadlock in io_write To: syzbot , io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk References: <00000000000050a4fd05b05a7579@google.com> From: Jens Axboe Message-ID: <69d85830-b846-72ad-7315-545509f3a099@kernel.dk> Date: Mon, 28 Sep 2020 09:01:20 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <00000000000050a4fd05b05a7579@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Not the prettiest solution, but I don't think that's a real concern as this is just for human consumption. #syz test: git://git.kernel.dk/linux-block io_uring-5.9 -- Jens Axboe