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=-9.4 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 EA952C433E0 for ; Tue, 2 Feb 2021 11:11:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B029264E06 for ; Tue, 2 Feb 2021 11:11:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229677AbhBBLLO (ORCPT ); Tue, 2 Feb 2021 06:11:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41126 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229808AbhBBLKL (ORCPT ); Tue, 2 Feb 2021 06:10:11 -0500 Received: from mail-wr1-x429.google.com (mail-wr1-x429.google.com [IPv6:2a00:1450:4864:20::429]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F37DEC061573 for ; Tue, 2 Feb 2021 03:09:30 -0800 (PST) Received: by mail-wr1-x429.google.com with SMTP id l12so19992939wry.2 for ; Tue, 02 Feb 2021 03:09:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=to:references:from:autocrypt:subject:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=sb5Z97r1r1HKTGc7ZoDxc6n4L4O934Q4DWPN2mmxtHg=; b=OP+yBrRT/9EVaor0E3EZoXDsPthi4+iUifywtyGA6AS8zyWMdtBnF/FqQt4uZvuRQL yIjgAxe2JVXzQpDcIdPVo2ihVz4pEdESAcWjhxlxNJyfoMa2tnu7lyzRUNA1b3TjiPr3 n5rk5fX8ZchGLBjkanRz+8wGBeW1RazmYp01cQkpXSghuUst03S4uYDbZyqkbBh7F1kq jypKk3JYDjYMZCBPq4A8wHftAEtSRwt/S5UxQHCYp5A7k/h1JXBOOD71XUGDRmLD5B8b HMSQxU8VklJwMcTVJ/qmo/Apj3nC9jjzp8K/GwD0BGgOuvuGLOzsFz43YATLPw+y6u0v 2bWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:references:from:autocrypt:subject:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=sb5Z97r1r1HKTGc7ZoDxc6n4L4O934Q4DWPN2mmxtHg=; b=jMLCuTSfM1tT2DRscOe+w36VbzJpp8BNpjMWIJ1SPs0LbevCrLdxACkoAoklo2ctZE xzE/QOn/+j7g5lXRviWHyXPr5NuLSRkXdtgTC3FnhTvGhu+PSMVer8kHWPTTtJ1OC2iL NT6mxT9PbozmTbAis7hgokQqo1e3Jv8ouJ/y9nutelsFsOk7LqARek0B+x+TuH7xh8l3 0H7STjruwhCGg29GnxzNSzA/E2/T4rVW5EhJLQa8KGZtHr5vxbH7hJTKiqQqH2FY16WN s62LOMIU4KwHNfRsKJ3qifkD5iUe27/69gv8Gv09rQoyiXmzNCtt2sn6bxruhq8tyCk0 zDPQ== X-Gm-Message-State: AOAM532BxKrn30F4Mi0XNlt/YC39QH3mE/xZMlzgi25kdy7tcY86exii CTJrUjjs0SCiwLgWEZuuGwrd1MLrLwESUw== X-Google-Smtp-Source: ABdhPJyGazh04CpdtJDuAjs3UXKi3HeTtSHSU9F1R3WDRx5t94khCdEVjz9wfbp4drV5/hMSiqOThA== X-Received: by 2002:a05:6000:1105:: with SMTP id z5mr22926850wrw.15.1612264168332; Tue, 02 Feb 2021 03:09:28 -0800 (PST) Received: from [192.168.8.169] ([185.69.145.241]) by smtp.gmail.com with ESMTPSA id w4sm11170131wrt.69.2021.02.02.03.09.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 02 Feb 2021 03:09:27 -0800 (PST) To: Victor Stewart , io-uring References: From: Pavel Begunkov Autocrypt: addr=asml.silence@gmail.com; prefer-encrypt=mutual; keydata= mQINBFmKBOQBEAC76ZFxLAKpDw0bKQ8CEiYJRGn8MHTUhURL02/7n1t0HkKQx2K1fCXClbps bdwSHrhOWdW61pmfMbDYbTj6ZvGRvhoLWfGkzujB2wjNcbNTXIoOzJEGISHaPf6E2IQx1ik9 6uqVkK1OMb7qRvKH0i7HYP4WJzYbEWVyLiAxUj611mC9tgd73oqZ2pLYzGTqF2j6a/obaqha +hXuWTvpDQXqcOZJXIW43atprH03G1tQs7VwR21Q1eq6Yvy2ESLdc38EqCszBfQRMmKy+cfp W3U9Mb1w0L680pXrONcnlDBCN7/sghGeMHjGKfNANjPc+0hzz3rApPxpoE7HC1uRiwC4et83 CKnncH1l7zgeBT9Oa3qEiBlaa1ZCBqrA4dY+z5fWJYjMpwI1SNp37RtF8fKXbKQg+JuUjAa9 Y6oXeyEvDHMyJYMcinl6xCqCBAXPHnHmawkMMgjr3BBRzODmMr+CPVvnYe7BFYfoajzqzq+h EyXSl3aBf0IDPTqSUrhbmjj5OEOYgRW5p+mdYtY1cXeK8copmd+fd/eTkghok5li58AojCba jRjp7zVOLOjDlpxxiKhuFmpV4yWNh5JJaTbwCRSd04sCcDNlJj+TehTr+o1QiORzc2t+N5iJ NbILft19Izdn8U39T5oWiynqa1qCLgbuFtnYx1HlUq/HvAm+kwARAQABtDFQYXZlbCBCZWd1 bmtvdiAoc2lsZW5jZSkgPGFzbWwuc2lsZW5jZUBnbWFpbC5jb20+iQJOBBMBCAA4FiEE+6Ju PTjTbx479o3OWt5b1Glr+6UFAlmKBOQCGwMFCwkIBwIGFQgJCgsCBBYCAwECHgECF4AACgkQ Wt5b1Glr+6WxZA//QueaKHzgdnOikJ7NA/Vq8FmhRlwgtP0+E+w93kL+ZGLzS/cUCIjn2f4Q Mcutj2Neg0CcYPX3b2nJiKr5Vn0rjJ/suiaOa1h1KzyNTOmxnsqE5fmxOf6C6x+NKE18I5Jy xzLQoktbdDVA7JfB1itt6iWSNoOTVcvFyvfe5ggy6FSCcP+m1RlR58XxVLH+qlAvxxOeEr/e aQfUzrs7gqdSd9zQGEZo0jtuBiB7k98t9y0oC9Jz0PJdvaj1NZUgtXG9pEtww3LdeXP/TkFl HBSxVflzeoFaj4UAuy8+uve7ya/ECNCc8kk0VYaEjoVrzJcYdKP583iRhOLlZA6HEmn/+Gh9 4orG67HNiJlbFiW3whxGizWsrtFNLsSP1YrEReYk9j1SoUHHzsu+ZtNfKuHIhK0sU07G1OPN 2rDLlzUWR9Jc22INAkhVHOogOcc5ajMGhgWcBJMLCoi219HlX69LIDu3Y34uIg9QPZIC2jwr 24W0kxmK6avJr7+n4o8m6sOJvhlumSp5TSNhRiKvAHB1I2JB8Q1yZCIPzx+w1ALxuoWiCdwV M/azguU42R17IuBzK0S3hPjXpEi2sK/k4pEPnHVUv9Cu09HCNnd6BRfFGjo8M9kZvw360gC1 reeMdqGjwQ68o9x0R7NBRrtUOh48TDLXCANAg97wjPoy37dQE7e5Ag0EWYoE5AEQAMWS+aBV IJtCjwtfCOV98NamFpDEjBMrCAfLm7wZlmXy5I6o7nzzCxEw06P2rhzp1hIqkaab1kHySU7g dkpjmQ7Jjlrf6KdMP87mC/Hx4+zgVCkTQCKkIxNE76Ff3O9uTvkWCspSh9J0qPYyCaVta2D1 Sq5HZ8WFcap71iVO1f2/FEHKJNz/YTSOS/W7dxJdXl2eoj3gYX2UZNfoaVv8OXKaWslZlgqN jSg9wsTv1K73AnQKt4fFhscN9YFxhtgD/SQuOldE5Ws4UlJoaFX/yCoJL3ky2kC0WFngzwRF Yo6u/KON/o28yyP+alYRMBrN0Dm60FuVSIFafSqXoJTIjSZ6olbEoT0u17Rag8BxnxryMrgR dkccq272MaSS0eOC9K2rtvxzddohRFPcy/8bkX+t2iukTDz75KSTKO+chce62Xxdg62dpkZX xK+HeDCZ7gRNZvAbDETr6XI63hPKi891GeZqvqQVYR8e+V2725w+H1iv3THiB1tx4L2bXZDI DtMKQ5D2RvCHNdPNcZeldEoJwKoA60yg6tuUquvsLvfCwtrmVI2rL2djYxRfGNmFMrUDN1Xq F3xozA91q3iZd9OYi9G+M/OA01husBdcIzj1hu0aL+MGg4Gqk6XwjoSxVd4YT41kTU7Kk+/I 5/Nf+i88ULt6HanBYcY/+Daeo/XFABEBAAGJAjYEGAEIACAWIQT7om49ONNvHjv2jc5a3lvU aWv7pQUCWYoE5AIbDAAKCRBa3lvUaWv7pfmcEACKTRQ28b1y5ztKuLdLr79+T+LwZKHjX++P 4wKjEOECCcB6KCv3hP+J2GCXDOPZvdg/ZYZafqP68Yy8AZqkfa4qPYHmIdpODtRzZSL48kM8 LRzV8Rl7J3ItvzdBRxf4T/Zseu5U6ELiQdCUkPGsJcPIJkgPjO2ROG/ZtYa9DvnShNWPlp+R uPwPccEQPWO/NP4fJl2zwC6byjljZhW5kxYswGMLBwb5cDUZAisIukyAa8Xshdan6C2RZcNs rB3L7vsg/R8UCehxOH0C+NypG2GqjVejNZsc7bgV49EOVltS+GmGyY+moIzxsuLmT93rqyII 5rSbbcTLe6KBYcs24XEoo49Zm9oDA3jYvNpeYD8rDcnNbuZh9kTgBwFN41JHOPv0W2FEEWqe JsCwQdcOQ56rtezdCJUYmRAt3BsfjN3Jn3N6rpodi4Dkdli8HylM5iq4ooeb5VkQ7UZxbCWt UVMKkOCdFhutRmYp0mbv2e87IK4erwNHQRkHUkzbsuym8RVpAZbLzLPIYK/J3RTErL6Z99N2 m3J6pjwSJY/zNwuFPs9zGEnRO4g0BUbwGdbuvDzaq6/3OJLKohr5eLXNU3JkT+3HezydWm3W OPhauth7W0db74Qd49HXK0xe/aPrK+Cp+kU1HRactyNtF8jZQbhMCC8vMGukZtWaAwpjWiiH bA== Subject: Re: bug with fastpoll accept and sqpoll + IOSQE_FIXED_FILE Message-ID: <49743b61-3777-f152-e1d5-128a53803bcd@gmail.com> Date: Tue, 2 Feb 2021 11:05:45 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.3.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 02/02/2021 05:36, Victor Stewart wrote: > started experimenting with sqpoll and my fastpoll accepts started > failing. was banging my head against the wall for a few hours... wrote > this test case below.... > > basically fastpoll accept only works without sqpoll, and without > adding IOSQE_FIXED_FILE to the sqe. fails with both, fails with > either. these must be bugs? > > I'm running Clear Linux 5.10.10-1017.native. > > i hope no one here is allergic to C++, haha. compilation command > commented in the gist, just replace the two paths. and I can fold > these checks if needed into a liburing PR later. > > https://gist.github.com/victorstewart/98814b65ed702c33480487c05b40eb56 Please don't forget about checking error codes. At least fixed files don't work for you because of int fds[10]; memset(fds, -1, 10); // 10 bytes, not 10 ints So io_uring_register_files() silently fails. For me, all two "with SQPOLL" tests spit SUCCESS, then it hangs. But need to test it with upstream to be sure. -- Pavel Begunkov