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 9CE79C433B4 for ; Thu, 6 May 2021 23:47:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7D63C61006 for ; Thu, 6 May 2021 23:47:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233100AbhEFXsH (ORCPT ); Thu, 6 May 2021 19:48:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59066 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233085AbhEFXsG (ORCPT ); Thu, 6 May 2021 19:48:06 -0400 Received: from mail-pg1-x52b.google.com (mail-pg1-x52b.google.com [IPv6:2607:f8b0:4864:20::52b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 78551C061574 for ; Thu, 6 May 2021 16:47:07 -0700 (PDT) Received: by mail-pg1-x52b.google.com with SMTP id i14so5870590pgk.5 for ; Thu, 06 May 2021 16:47:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-transfer-encoding:content-language; bh=vNAsVLI+S42kshjpIZQRLpT80lkmeqydX93DGx2oNQQ=; b=VEXuLHPdPCrj2r7emCvtH9fusdOM55VovHSFuWOrkY6rVFSpT7kVn6Zpx2nbsAcnau k6utpKtmRSIUccrFKOGh4LpiO2DgbBV4XHyrOqxilBVybLjH7WKl//afCeaCO2riL1Ce FISJ8o36lIJLjiuv3ucnJKKL0yf1a6oHoTsQ3DJBt+ZJ7rTELZuyllmKsvqznpICyoCj so86Cqxx6PMiEnA89/nETR/Zp0xq5bSXnZDd8o16SI2YossRDhtenx1IKlIcM5joNtJn U1rLh7BrJSQ5+wQViGR91cYx6OkFv65noqriSs+F+PXU3Qno0QWf/ZVGGMdYx1G/k+sI Xkbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=vNAsVLI+S42kshjpIZQRLpT80lkmeqydX93DGx2oNQQ=; b=hDpxquKUBqcRjMc2TZ5Z1SSGVLEF0IIAk0UhRk2mksXzoXcR3Gn9Ypb2ZS37Ychi1h ZerUn6mN8RrrL+tGhcZGksWA2areC73tvtuqjmoFK4uwDrcmZwakH6jw2ueoLLFpJX8H wb4p0lzfc2+ArcU9OfGb4fMOP4ZUxg5JLTMNf7vWUGyCZ8uKPAZXXAUuXiV++BsXPDax 1AI0n5djQ4+LwecbB7I711W9bcBNLukNacFmYaDf0S3+O1yEdOISs9CgcLAH795XDSQm k6AS6qrdOgRsia9Adz0IqiMotYJksHIqww8kULor+gUVFU3hWrYE0NTYF5sMVu7WNkQp g/wQ== X-Gm-Message-State: AOAM532cQnOTbJqEuUxYd6XyXLj6zPF0kJqpYPcN/YsGJ+iQ4LHYP9FA KKQrWH36g2bbE9oFYfc2ToE= X-Google-Smtp-Source: ABdhPJz98QGj34/ddOp5+ofjpIRYG1ickpgp1BgD/4zlNjC2AGsgrC5YjJoO4WfhqtuLJtO8YuKXiQ== X-Received: by 2002:a65:558a:: with SMTP id j10mr6702452pgs.404.1620344826828; Thu, 06 May 2021 16:47:06 -0700 (PDT) Received: from ?IPv6:2409:8950:621:7b0:35da:b248:3f09:bae5? ([2409:8950:621:7b0:35da:b248:3f09:bae5]) by smtp.gmail.com with ESMTPSA id u18sm3008263pfm.4.2021.05.06.16.47.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 06 May 2021 16:47:06 -0700 (PDT) Subject: Re: PROBLEM: double fault in md_end_io To: Song Liu , =?UTF-8?Q?Pawe=c5=82_Wiejacha?= Cc: linux-raid , Artur Paszkiewicz References: From: Guoqing Jiang Message-ID: <9d644350-12b1-e32d-ba69-31be8ac2f6cf@gmail.com> Date: Fri, 7 May 2021 07:46:52 +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: 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 5/6/21 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. > > Hi Guoqing, > > Could you please send official patch for this fix? Will do, and I think then we need to figure out a way to account the statistic of split bio properly. Thanks, Guoqing