Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753048AbdLVOGw (ORCPT ); Fri, 22 Dec 2017 09:06:52 -0500 Received: from wolff.to ([98.103.208.27]:34002 "HELO wolff.to" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751737AbdLVOGu (ORCPT ); Fri, 22 Dec 2017 09:06:50 -0500 Date: Fri, 22 Dec 2017 08:04:23 -0600 From: Bruno Wolff III To: weiping zhang Cc: Jens Axboe , Laura Abbott , Jan Kara , linux-mm@kvack.org, Linux Kernel Mailing List , regressions@leemhuis.info, weiping zhang , linux-block@vger.kernel.org Subject: Re: Regression with a0747a859ef6 ("bdi: add error handle for bdi_debug_register") Message-ID: <20171222140423.GA23107@wolff.to> References: <20171221151843.GA453@wolff.to> <20171221153631.GA2300@wolff.to> <20171221164221.GA23680@wolff.to> <14f04d43-728a-953f-e07c-e7f9d5e3392d@kernel.dk> <20171221181531.GA21050@wolff.to> <20171221231603.GA15702@wolff.to> <20171222045318.GA4505@wolff.to> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.1 (2017-09-22) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 850 Lines: 21 On Fri, Dec 22, 2017 at 21:20:10 +0800, weiping zhang wrote: >2017-12-22 12:53 GMT+08:00 Bruno Wolff III : >> On Thu, Dec 21, 2017 at 17:16:03 -0600, >> Bruno Wolff III wrote: >>> >>> >>> Enforcing mode alone isn't enough as I tested that one one machine at home >>> and it didn't trigger the problem. I'll try another machine late tonight. >> >> >> I got the problem to occur on my i686 machine when booting in enforcing >> mode. This machine uses raid 1 vua mdraid which may or may not be a factor >> in this problem. The boot log has a trace at the end and might be helpful, >> so I'm attaching it here. >Hi Bruno, >I can reproduce this issue in my QEMU test VM easily, just add an soft >RAID1, always trigger >that warning, I'll debug it later. Great. When you have a fix, I can test it.