Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754627AbdFWP2z (ORCPT ); Fri, 23 Jun 2017 11:28:55 -0400 Received: from mail-ot0-f180.google.com ([74.125.82.180]:35043 "EHLO mail-ot0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754407AbdFWP2v (ORCPT ); Fri, 23 Jun 2017 11:28:51 -0400 Subject: Re: Sleeping BUG in khugepaged for i586 To: Michal Hocko , Vlastimil Babka Cc: David Rientjes , Andrew Morton , LKML , linux-mm@kvack.org References: <968ae9a9-5345-18ca-c7ce-d9beaf9f43b6@lwfinger.net> <20170605144401.5a7e62887b476f0732560fa0@linux-foundation.org> <1e883924-9766-4d2a-936c-7a49b337f9e2@lwfinger.net> <9ab81c3c-e064-66d2-6e82-fc9bac125f56@suse.cz> <20170608144831.GA19903@dhcp22.suse.cz> <20170623120812.GS5308@dhcp22.suse.cz> <66280cc3-6231-8d35-6d9a-113fe2d80409@suse.cz> <20170623132558.GC5308@dhcp22.suse.cz> From: Larry Finger Message-ID: Date: Fri, 23 Jun 2017 10:28:49 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.0 MIME-Version: 1.0 In-Reply-To: <20170623132558.GC5308@dhcp22.suse.cz> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 892 Lines: 28 On 06/23/2017 08:25 AM, Michal Hocko wrote: > On Fri 23-06-17 15:13:45, Vlastimil Babka wrote: >> On 06/23/2017 02:08 PM, Michal Hocko wrote: >>> On Thu 08-06-17 16:48:31, Michal Hocko wrote: >>>> On Wed 07-06-17 13:56:01, David Rientjes wrote: >>>> >>>> I suspect, so cond_resched seems indeed inappropriate on 32b systems. >>> >>> The code still seems to be in the mmotm tree. >> >> Even mainline at this point - 338a16ba1549 >> >>> Are there any plans to fix >>> this or drop the patch? >> >> https://lkml.kernel.org/r/alpine.DEB.2.10.1706191341550.97821@chino.kir.corp.google.com > > Ahh, I have missed that. Thanks! I also missed that patch. Applying it to my box fixes the scheduling while atomic splats and no downside has been detected. You may add "Reported-and-tested-by: Larry Finger ". Thanks for everyone's efforts in fixing this problem. Larry