From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-f198.google.com (mail-io0-f198.google.com [209.85.223.198]) by kanga.kvack.org (Postfix) with ESMTP id 547966B0033 for ; Fri, 15 Dec 2017 14:54:37 -0500 (EST) Received: by mail-io0-f198.google.com with SMTP id v21so161232iob.0 for ; Fri, 15 Dec 2017 11:54:37 -0800 (PST) Received: from wolff.to (wolff.to. [98.103.208.27]) by mx.google.com with SMTP id c20si5188092ioj.187.2017.12.15.11.54.35 for ; Fri, 15 Dec 2017 11:54:36 -0800 (PST) Date: Fri, 15 Dec 2017 13:51:22 -0600 From: Bruno Wolff III Subject: Re: Regression with a0747a859ef6 ("bdi: add error handle for bdi_debug_register") Message-ID: <20171215195122.GA27126@wolff.to> References: <20171214082452.GA16698@wolff.to> <20171214100927.GA26167@localhost.didichuxing.com> <20171214154136.GA12936@wolff.to> <20171215014417.GA17757@wolff.to> <20171215111050.GA30737@wolff.to> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: 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 On Fri, Dec 15, 2017 at 22:02:20 +0800, weiping zhang wrote: >Sorry to let you confuse, WARN_ON means we catch log as following: >WARNING: CPU: 3 PID: 3486 at block/genhd.c:680 device_add_disk+0x3d9/0x460 I do not get this warning for any of the kernels I build, whether from Linus' tree or Josh Boyer's Fedora tree. It shows up when I test kernels built by Fedora, but those don't have your debug patch. 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). -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org