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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B8888C433EF for ; Mon, 25 Oct 2021 09:59:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9B41460C41 for ; Mon, 25 Oct 2021 09:59:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232638AbhJYKBm (ORCPT ); Mon, 25 Oct 2021 06:01:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34190 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230297AbhJYKBm (ORCPT ); Mon, 25 Oct 2021 06:01:42 -0400 Received: from mail-wr1-x42b.google.com (mail-wr1-x42b.google.com [IPv6:2a00:1450:4864:20::42b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CC55AC061745; Mon, 25 Oct 2021 02:59:19 -0700 (PDT) Received: by mail-wr1-x42b.google.com with SMTP id z14so10650513wrg.6; Mon, 25 Oct 2021 02:59:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language :from:to:cc:references:in-reply-to:content-transfer-encoding; bh=gHtd2usMmK1BtETpykfNFHKma/8gTHTOEFGm/6yCpKs=; b=YiAeRaix7x8jo22t1Kd6yDDe2MIW74042HKhONKl0rhFgerCICKXiC25qY4hISXDb0 pmZKyoPUWkhgAABDPFeuWRrpU8iejnqS+nf7a0tMXXQihLHWJ2lZoPMBif2druL3s2ps OYP3BMdpHpn9njSAejImM9SfX3IJwYQmm/a530nl4RwQbpIF5LuEQNsviAoDo48ww04G e7a/rNVyUdyt/pvEqqVnDSFdNGs4oQYr1ZMPG6NzTWwuszZKHPq6r/USDsFH69WHMX20 JUoAq4tDYStk8lRn5zP/VC1AB2u6f4xIEY//aEomFdmeE7PYqqPplIP7ScJrvogP8aOe X3bQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:from:to:cc:references:in-reply-to :content-transfer-encoding; bh=gHtd2usMmK1BtETpykfNFHKma/8gTHTOEFGm/6yCpKs=; b=PhsHBAZP5gA2npsdsU7VPwMyEihANKSjADl1tkRp/A+HV/LKJWUEWRFVps+g4F4HhU rs9a0dOeUiXuKZ8JYA5IRisZJkg5bzYS3tZVfXC8QDZMBjlGmegEdyAXNb1kM96l02wK mPy2d7qoN4pAvXMq58cL4qGBLvTD5C+4nulWXpWcLvDQ/rGorSPMsxI11VcA9VE4oomb T7qBlhFdeHgMhX0eQ3GaGyFE8ke+vtvq9gC6qoAwrJUgDScQwaznN/dOfykyqhNCXFiz Fin+VLl74rsHR/CbvWUxTb9UggtIJEkXzUL1qjECFYjKrnFuyz2eaJldyHrNT9sshhWY DOPA== X-Gm-Message-State: AOAM5322h303LC3ZBxUmrq/3sDg04nWkvoOfrguy5J5MvbXIbIOeVu1K ovW4DHu0MU6JRMV3Y3+A8yrRRZpvxTk= X-Google-Smtp-Source: ABdhPJxxtO4zOATCWbIb7PkPrsG1rCgPQ4WsjLjHeQlDj6d/TePXairv5gmt4aBX6zPLs13G8pI+4Q== X-Received: by 2002:adf:bc4a:: with SMTP id a10mr22487679wrh.272.1635155958509; Mon, 25 Oct 2021 02:59:18 -0700 (PDT) Received: from [192.168.8.198] ([185.69.144.165]) by smtp.gmail.com with ESMTPSA id m8sm15646802wri.33.2021.10.25.02.59.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 25 Oct 2021 02:59:18 -0700 (PDT) Message-ID: <8cd3d258-91b8-c9b2-106c-01b577cc44d4@gmail.com> Date: Mon, 25 Oct 2021 10:57:44 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: uring regression - lost write request Content-Language: en-US From: Pavel Begunkov To: Daniel Black , linux-block@vger.kernel.org Cc: io-uring@vger.kernel.org References: <77f9feaa-2d65-c0f5-8e55-5f8210d6a4c6@gmail.com> In-Reply-To: <77f9feaa-2d65-c0f5-8e55-5f8210d6a4c6@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 10/22/21 10:10, Pavel Begunkov wrote: > On 10/22/21 04:12, Daniel Black wrote: >> Sometime after 5.11 and is fixed in 5.15-rcX (rc6 extensively tested >> over last few days) is a kernel regression we are tracing in >> https://jira.mariadb.org/browse/MDEV-26674 and >> https://jira.mariadb.org/browse/MDEV-26555 >> 5.10 and early across many distros and hardware appear not to have a problem. >> >> I'd appreciate some help identifying a 5.14 linux stable patch >> suitable as I observe the fault in mainline 5.14.14 (built > > Cc: io-uring@vger.kernel.org > > Let me try to remember anything relevant from 5.15, > Thanks for letting know Daniel, following the links I found this: "From: Daniel Black ... The good news is I've validated that the linux mainline 5.14.14 build from https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.14.14/ has actually fixed this problem." To be clear, is the mainline 5.14 kernel affected with the issue? Or does the problem exists only in debian/etc. kernel trees? -- Pavel Begunkov