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=-4.3 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,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 E31CFC433ED for ; Sat, 8 May 2021 01:17:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B4B166143B for ; Sat, 8 May 2021 01:17:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229812AbhEHBSv (ORCPT ); Fri, 7 May 2021 21:18:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229775AbhEHBSv (ORCPT ); Fri, 7 May 2021 21:18:51 -0400 Received: from mail-pf1-x42a.google.com (mail-pf1-x42a.google.com [IPv6:2607:f8b0:4864:20::42a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C73E7C061574 for ; Fri, 7 May 2021 18:17:49 -0700 (PDT) Received: by mail-pf1-x42a.google.com with SMTP id v191so9075759pfc.8 for ; Fri, 07 May 2021 18:17:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:from:to:cc:references:message-id:date:user-agent :mime-version:in-reply-to:content-transfer-encoding:content-language; bh=rk4hDE4sHjvPjZXwznS69vj82MjtBFOTFgH/bkCxRcc=; b=sVzor52OQiNkwbsNoY8AMMC8avYzH4Zqxowzy4lt2z/jil1iwK/fEege6JEOi7Pj82 D4VA2bjVEAZmgMaAs8CQMDCZC9kbS9L3EZKEAc2ur2YAudcScYFJaZYDg9QU6TlXrIKq 6QIO6NDbC+zy8gmIS19rFVyY++bYgTYgC3EJtHw/bG93EUhz30G+ezbULUWunajdOWQ/ 1zXZpQ/CtC5wEU2YX6b7/hZuiGfs1VBib6WrDhzustp/IJEDiCezdDcACajdpNzbaNqE bMO5WrgeLBVinuubmCnkcfwakI068DN64sxB0DzPAlDEa/vtb4Ooq7OmNVBVDBegdLap hU2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:references:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=rk4hDE4sHjvPjZXwznS69vj82MjtBFOTFgH/bkCxRcc=; b=dZv1tgvqugx6FMNSP40bkTzlamcmDDvyFba/jChj3WJOmo52VXj6CZWNGW/9yY6SoK h1YAoYf84CRbgkGTIOwLA4GGQy4lap9bfZd0BwFyhCz37ndJfUbQosleTIKbpmkbUOV+ v0tH5gofQnMwy5m1UM1Z30EeF+NLy16+QBT6VQkJlRSk7IxI49fLRnipy7UtsDXp7IjW Cv8Wn3F/yRB7FHS7N8JL9a6MTPI+/OAtI5rgSl/aWkWwOxhYwRxIgioPEngEljluoxAA nfXNWMFbrbUPCDnAZA12CJE8bd3OgauDg9gA2WHo85SuYXHS6HxAmHPrehud2ehAIyPb tuYA== X-Gm-Message-State: AOAM531msEJG4oHSY4smaXVRi7XpsaLOuLrLwq4YDstC2fukLlV+Lj65 GhzsWt13zAE2gYQEA33ha4w= X-Google-Smtp-Source: ABdhPJzKluzb0qt0cil+TvgFG2/nduhkumbi9UXq/r6AJL+68QStdd4+S2Ug7KWiZfjdI111ODYZsQ== X-Received: by 2002:a62:fb14:0:b029:22e:e189:c6b1 with SMTP id x20-20020a62fb140000b029022ee189c6b1mr13607980pfm.31.1620436669353; Fri, 07 May 2021 18:17:49 -0700 (PDT) Received: from [10.6.1.237] ([89.187.161.155]) by smtp.gmail.com with ESMTPSA id c9sm5157133pfl.169.2021.05.07.18.17.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 07 May 2021 18:17:48 -0700 (PDT) Subject: Re: PROBLEM: double fault in md_end_io From: Guoqing Jiang To: Song Liu , =?UTF-8?Q?Pawe=c5=82_Wiejacha?= Cc: linux-raid , Artur Paszkiewicz References: <9d644350-12b1-e32d-ba69-31be8ac2f6cf@gmail.com> Message-ID: <3bf04253-3fad-434a-63a7-20214e38cf26@gmail.com> Date: Sat, 8 May 2021 09:17:32 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 In-Reply-To: <9d644350-12b1-e32d-ba69-31be8ac2f6cf@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-raid@vger.kernel.org On 5/7/21 7:46 AM, Guoqing Jiang wrote: > > > On 5/6/21 1:48 PM, Song Liu wrote: >> Hi Paweł, >> >> On Tue, May 4, 2021 at 2:18 PM Paweł Wiejacha >> wrote: >>> Guoqing's patch fixes the problem. Here's the actual patch I am using: >> Thanks for running the tests. > > Thanks for the test, the better way could be just call > bio_flagged(bio, BIO_CHAIN) > then no need to export bi_chain_endio. Err, BIO_CHAIN is set for parent bio, then we have to export bi_chain_endio if there is no way to detect whether the bio was split from parent bio or not. Thanks, Guoqing