Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756904AbdLPQf6 (ORCPT ); Sat, 16 Dec 2017 11:35:58 -0500 Received: from wolff.to ([98.103.208.27]:35942 "HELO wolff.to" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752746AbdLPQfy (ORCPT ); Sat, 16 Dec 2017 11:35:54 -0500 Date: Sat, 16 Dec 2017 10:32:26 -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: <20171216163226.GA1796@wolff.to> References: <20171214082452.GA16698@wolff.to> <20171214100927.GA26167@localhost.didichuxing.com> <20171214154136.GA12936@wolff.to> <20171215014417.GA17757@wolff.to> <20171215111050.GA30737@wolff.to> <20171215195122.GA27126@wolff.to> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20171215195122.GA27126@wolff.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: 698 Lines: 15 On Fri, Dec 15, 2017 at 13:51:22 -0600, Bruno Wolff III wrote: > >I do not know what is different. Do you have any ideas? Most likely I >won't be able to test any more kernels until Monday (unless I can use >most of my most recent build over again very soon). The .config looks like it should be OK. I'll test setting loglevel on boot in case the default is different than what the config file says. I can't do that until Monday morning. I think it is more likely the the WARN_ON macro code isn't being compiled in for some reason. I haven't confirmed that, nor have I found anything that would leave that code out when I do a make, but include it during Fedora builds.