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=-5.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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 AA2B1C43461 for ; Sun, 9 May 2021 03:51:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 836D761474 for ; Sun, 9 May 2021 03:51:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229620AbhEIDwi (ORCPT ); Sat, 8 May 2021 23:52:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34826 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229610AbhEIDwg (ORCPT ); Sat, 8 May 2021 23:52:36 -0400 Received: from mail-pg1-x536.google.com (mail-pg1-x536.google.com [IPv6:2607:f8b0:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 354E0C06175F for ; Sat, 8 May 2021 20:51:34 -0700 (PDT) Received: by mail-pg1-x536.google.com with SMTP id m37so10926840pgb.8 for ; Sat, 08 May 2021 20:51:34 -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=wK5/7IU4o9YhDHFoicZcfLXLedUpMj2SAlDtfL68d0I=; b=YUpn4sry2AzpIxDfiNijmM4iRtMGnH8b+1iis0Bdzql5346VfsKns8E+76D/iQgwI+ OTiIacC2fI4kB+PnuIGUXwdHSriipYsxazKqj8y+7QKzz0LsGUAP0LQ4/jh2hthuprCd Z1zTattZJiNEeR4npGvLSKYWP6JiwbBlnX9hTBrqi153aQjghZl2hTFmm3/S6n8MhavY bcgAy6FGCwm1Dw/DoVtUmcVX5gzkfUN+jLKh5g1BJKhoPk5DbDe8oxY+xB5lec8YADai rqFd3aRo1jys3vkW+wM0/jJcuR26dzi3GpSEXLWMhWMx9Abtn4Sg0r7Cw7pkGtAhccO6 Oujw== 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=wK5/7IU4o9YhDHFoicZcfLXLedUpMj2SAlDtfL68d0I=; b=DAZ8CUfs+6waDEwhN1759NXN9wsSXMIZJrKg79DmrjXzH7NItq8PQ88Di9P2whl5vF IELS+31y2JOVPIrC4QA0ZcypS8fQ84PvuO/BwFPIrKg6f+e0b5A2TAiOpq7gjDo9U5RA fbY8gtRcfPMxYYS04b4OwqYzfEwep3sDacy5RkacGnAP3M241crxEMf0jkE07YcsIIa+ soi59rjZp4CQAoma/J0B+kuMXUsnYltr5thP0MneQSrg4ZVKmM19jQrw3qUQRakRFvdm uQVWlSEZYl3SR3gG4d87DGCRTCIgPqbnjaJeLR7PKySJftrmOQvs/HJ2GEVrmcKCQMHD aYqQ== X-Gm-Message-State: AOAM532q4ikAcO5gTQnG0yagEx8lAAHKzxvaivTbicqigBRA8whCwiZr pijfRCYlVDu58SObUZjFbPhgtA== X-Google-Smtp-Source: ABdhPJz2bYqb40v/5PySanPTXWCo+v5sANxFSuWgfuXlAqfRT48bHmD8zZcuwLyY9aZHX4I/7fKTkA== X-Received: by 2002:a63:a511:: with SMTP id n17mr18825904pgf.9.1620532293431; Sat, 08 May 2021 20:51:33 -0700 (PDT) Received: from [192.168.4.41] (cpe-72-132-29-68.dc.res.rr.com. [72.132.29.68]) by smtp.gmail.com with ESMTPSA id ne20sm7834245pjb.52.2021.05.08.20.51.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 08 May 2021 20:51:32 -0700 (PDT) Subject: Re: regression: data corruption with ext4 on LUKS on nvme with torvalds master To: "Alex Xu (Hello71)" , linux-kernel@vger.kernel.org, linux-ext4@vger.kernel.org, dm-crypt@saout.de, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, Changheun Lee , bvanassche@acm.org, yi.zhang@redhat.com, ming.lei@redhat.com, bgoncalv@redhat.com, hch@lst.de, jaegeuk@kernel.org References: <1620493841.bxdq8r5haw.none@localhost> <1620526887.tg1zx7w5np.none@localhost> From: Jens Axboe Message-ID: Date: Sat, 8 May 2021 21:51:36 -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: <1620526887.tg1zx7w5np.none@localhost> 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 On 5/8/21 8:29 PM, Alex Xu (Hello71) wrote: > Excerpts from Alex Xu (Hello71)'s message of May 8, 2021 1:54 pm: >> Hi all, >> >> Using torvalds master, I recently encountered data corruption on my ext4 >> volume on LUKS on NVMe. Specifically, during heavy writes, the system >> partially hangs; SysRq-W shows that processes are blocked in the kernel >> on I/O. After forcibly rebooting, chunks of files are replaced with >> other, unrelated data. I'm not sure exactly what the data is; some of it >> is unknown binary data, but in at least one case, a list of file paths >> was inserted into a file, indicating that the data is misdirected after >> encryption. >> >> This issue appears to affect files receiving writes in the temporal >> vicinity of the hang, but affects both new and old data: for example, my >> shell history file was corrupted up to many months before. >> >> The drive reports no SMART issues. >> >> I believe this is a regression in the kernel related to something merged >> in the last few days, as it consistently occurs with my most recent >> kernel versions, but disappears when reverting to an older kernel. >> >> I haven't investigated further, such as by bisecting. I hope this is >> sufficient information to give someone a lead on the issue, and if it is >> a bug, nail it down before anybody else loses data. >> >> Regards, >> Alex. >> > > I found the following test to reproduce a hang, which I guess may be the > cause: > > host$ cd /tmp > host$ truncate -s 10G drive > host$ qemu-system-x86_64 -drive format=raw,file=drive,if=none,id=drive -device nvme,drive=drive,serial=1 [... more VM setup options] > guest$ cryptsetup luksFormat /dev/nvme0n1 > [accept warning, use any password] > guest$ cryptsetup open /dev/nvme0n1 > [enter password] > guest$ mkfs.ext4 /dev/mapper/test > [normal output...] > Creating journal (16384 blocks): [hangs forever] > > I bisected this issue to: > > cd2c7545ae1beac3b6aae033c7f31193b3255946 is the first bad commit > commit cd2c7545ae1beac3b6aae033c7f31193b3255946 > Author: Changheun Lee > Date: Mon May 3 18:52:03 2021 +0900 > > bio: limit bio max size > > I didn't try reverting this commit or further reducing the test case. > Let me know if you need my kernel config or other information. If you have time, please do test with that reverted. I'd be anxious to get this revert queued up for 5.13-rc1. -- Jens Axboe