Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751618AbdLNKcb (ORCPT ); Thu, 14 Dec 2017 05:32:31 -0500 Received: from wolff.to ([98.103.208.27]:33964 "HELO wolff.to" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1750808AbdLNKc3 (ORCPT ); Thu, 14 Dec 2017 05:32:29 -0500 Date: Thu, 14 Dec 2017 04:29:30 -0600 From: Bruno Wolff III To: Laura Abbott , Jan Kara , Jens Axboe , linux-mm@kvack.org, Linux Kernel Mailing List , regressions@leemhuis.info, linux-block@vger.kernel.org Subject: Re: Regression with a0747a859ef6 ("bdi: add error handle for bdi_debug_register") Message-ID: <20171214102930.GA24997@wolff.to> References: <20171214082452.GA16698@wolff.to> <20171214100927.GA26167@localhost.didichuxing.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20171214100927.GA26167@localhost.didichuxing.com> 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: 814 Lines: 21 On Thu, Dec 14, 2017 at 18:09:27 +0800, weiping zhang wrote: >On Thu, Dec 14, 2017 at 02:24:52AM -0600, Bruno Wolff III wrote: >> On Wed, Dec 13, 2017 at 16:54:17 -0800, >> Laura Abbott wrote: >> >Hi, >> > >> >Fedora got a bug report https://bugzilla.redhat.com/show_bug.cgi?id=1520982 >> >of a boot failure/bug on Linus' master (full bootlog at the bugzilla) >> >> I'm available for testing. The problem happens on my x86_64 Dell >> Workstation, but not an old i386 server or an x86_64 mac hardware >> based laptop. > >Hi, > >It seems something wrong with bdi debugfs register, could you help >test the forllowing debug patch, I add some debug log, no function >change, thanks. I'll test it this morning. I'll probably have results in about 7 hrs from now.