Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754185AbdLQP6X (ORCPT ); Sun, 17 Dec 2017 10:58:23 -0500 Received: from wolff.to ([98.103.208.27]:36362 "HELO wolff.to" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751926AbdLQP6W (ORCPT ); Sun, 17 Dec 2017 10:58:22 -0500 Date: Sun, 17 Dec 2017 09:54:48 -0600 From: Bruno Wolff III To: weiping zhang Cc: 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: <20171217155448.GA20370@wolff.to> References: <20171214100927.GA26167@localhost.didichuxing.com> <20171214154136.GA12936@wolff.to> <20171215014417.GA17757@wolff.to> <20171215111050.GA30737@wolff.to> <20171215195122.GA27126@wolff.to> <20171216163226.GA1796@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: 680 Lines: 14 On Sun, Dec 17, 2017 at 21:43:50 +0800, weiping zhang wrote: >Hi, thanks for testing, I think you first reproduce this issue(got WARNING >at device_add_disk) by your own build, then add my debug patch. No, the first log (that Laura copied) was from the Fedora bug and it was from a Fedora kernel before I started doing the bisect. That warnings are missing from all of my builds, not just the ones from the patches. I didn't spot anything obvious going through the kernel spec file when I looked, but I could easily have missed something. Hopefully it is just a boot default that is different and that I can override it with a kernel boot parameter.