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[23.128.96.18]) by mx.google.com with ESMTP id u22si791653ejg.95.2020.09.28.08.05.37; Mon, 28 Sep 2020 08:06:00 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel-dk.20150623.gappssmtp.com header.s=20150623 header.b=tVc9Ks8A; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726729AbgI1PBW (ORCPT + 99 others); Mon, 28 Sep 2020 11:01:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726504AbgI1PBW (ORCPT ); Mon, 28 Sep 2020 11:01:22 -0400 Received: from mail-il1-x143.google.com (mail-il1-x143.google.com [IPv6:2607:f8b0:4864:20::143]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B02CC0613CF for ; Mon, 28 Sep 2020 08:01:22 -0700 (PDT) Received: by mail-il1-x143.google.com with SMTP id y2so1572553ila.0 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=EFODjwCLYETKesUBRgP1A2UuNyuPukM/P9WkyGsk6zl9aVw7EpMZ/sziecRd4ueJ+K sfNT7sum6G9rRStx4gQdYgnXwzQMmfHlxCGTqx2HSig9tsNaf+HQE5+29w7HE5xiJjCM kAjtiQL1pvK3RsNYLVqoMYaQV86im8hKK0NZRW+zdFVJYr7O95gEbjkTL+AYrGQSLW4D aO2i3jMHq7w39gZTX2bmeehuNlyj12dectOgaxxJyDVzmKGLjPKH9jwSLgPuAWSOMxkU +Z6lHZHl4EZCTYbkCCZMVOzPXNty25xayhLJwVmwSyi/N/VK7FwznpTpGeCjmzkvFuIp ObmA== X-Gm-Message-State: AOAM533i3Z+3lUTDo0w6qqFXMbiMOtDt1Y7xS757Jf3HuAyHms22XYrR i7GERDyPC7RGofHo2IQ6F4Vu8g== 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: linux-kernel@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