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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 88D8BC5CFE7 for ; Tue, 10 Jul 2018 20:43:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 36C7820B6F for ; Tue, 10 Jul 2018 20:43:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 36C7820B6F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=canonical.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732672AbeGJUoU (ORCPT ); Tue, 10 Jul 2018 16:44:20 -0400 Received: from complete.lackof.org ([198.49.126.79]:38868 "EHLO complete.lackof.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732263AbeGJUoT (ORCPT ); Tue, 10 Jul 2018 16:44:19 -0400 Received: from localhost (c-73-78-137-212.hsd1.co.comcast.net [73.78.137.212]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by complete.lackof.org (Postfix) with ESMTPSA id EBE1133E0027; Tue, 10 Jul 2018 14:43:29 -0600 (MDT) Date: Tue, 10 Jul 2018 14:43:29 -0600 From: dann frazier To: "Theodore Y. Ts'o" , linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, yanaijie@huawei.com, colin.king@canonical.com, kamal.mostafa@canonical.com, ike.pan@canonical.com Subject: Re: [Bisect] ext4_validate_inode_bitmap:98: comm stress-ng: Corrupt inode bitmap Message-ID: <20180710204329.GB20459@xps13.dannf> References: <20180706174324.GA3049@xps13.dannf> <20180707041018.GB3546@thunk.org> <20180710165143.GA20459@xps13.dannf> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180710165143.GA20459@xps13.dannf> User-Agent: Mutt/1.10.0 (2018-05-17) X-Virus-Scanned: clamav-milter 0.100.0 at complete.lackof.org X-Virus-Status: Clean Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 10, 2018 at 10:51:43AM -0600, dann frazier wrote: > On Sat, Jul 07, 2018 at 12:10:18AM -0400, Theodore Y. Ts'o wrote: > > On Fri, Jul 06, 2018 at 11:43:24AM -0600, dann frazier wrote: > > > Hi, > > > We're seeing a regression triggered by the stress-ng[*] "chdir" test > > > that I've bisected to: > > > > > > 044e6e3d74a3 ext4: don't update checksum of new initialized bitmaps > > > > > > So far we've only seen failures on servers based on HiSilicon's family > > > of ARM64 SoCs (D05/Hi1616 SoC, D06/Hi1620 SoC). On these systems it is > > > very reproducible. > > > > Thanks for the report. Can you verify whether or not this patch fixes > > things for you? > > hey Ted, > Sorry for the delayed response - was afk for a long weekend. > Your patch does seem to fix the issue for me - after applying the > patch, I was able to survive 20 iterations (and counting), where > previously it would always fail the first time. > > However, I've received a conflicting report from a colleague who > appears to still be seeing errors. I'll get back to you ASAP once I am > able to (in-?)validate that observation. OK - I believe I found an explanation for my colleague's continued test failures after applying the patch. The filesystem being used may have already been corrupted from a previous run, and the test w/ your patch just tripped over it. Details are here starting in comment #9 if you'd like to look them over: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1780137 -dann