From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935636AbaH0SWl (ORCPT ); Wed, 27 Aug 2014 14:22:41 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:34689 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932413AbaH0SWk (ORCPT ); Wed, 27 Aug 2014 14:22:40 -0400 Message-ID: <53FE21A8.4000908@oracle.com> Date: Wed, 27 Aug 2014 14:21:28 -0400 From: Sasha Levin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.0 MIME-Version: 1.0 To: Mel Gorman CC: Hugh Dickins , "linux-mm@kvack.org" , Andrew Morton , Dave Jones , LKML , "Kirill A. Shutemov" , Peter Zijlstra , Rik van Riel , Johannes Weiner , Cyrill Gorcunov Subject: Re: mm: BUG in unmap_page_range References: <53DD5F20.8010507@oracle.com> <20140805144439.GW10819@suse.de> <53E17F06.30401@oracle.com> <53E989FB.5000904@oracle.com> <53FD4D9F.6050500@oracle.com> <20140827152622.GC12424@suse.de> In-Reply-To: <20140827152622.GC12424@suse.de> Content-Type: text/plain; charset=iso-8859-15 Content-Transfer-Encoding: 7bit X-Source-IP: acsinet22.oracle.com [141.146.126.238] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/27/2014 11:26 AM, Mel Gorman wrote: > Sasha, how long does it typically take to trigger this? Are you > using any particular switches for trinity that would trigger the bug > faster? It took couple of weeks (I've been running with it since the beginning of August). I don't have any special trinity options, just the default fuzzing. Do you think that focusing on any of the mm syscalls would increase the odds of hitting it? There's always the chance that this is a fluke due to corruption somewhere else. I'll keep running it with the new debug patch and if it won't reproduce any time soon we can probably safely assume that. Thanks, Sasha From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yh0-f47.google.com (mail-yh0-f47.google.com [209.85.213.47]) by kanga.kvack.org (Postfix) with ESMTP id B28396B0035 for ; Wed, 27 Aug 2014 14:22:32 -0400 (EDT) Received: by mail-yh0-f47.google.com with SMTP id f10so642562yha.6 for ; Wed, 27 Aug 2014 11:22:32 -0700 (PDT) Received: from aserp1040.oracle.com (aserp1040.oracle.com. [141.146.126.69]) by mx.google.com with ESMTPS id a9si1394567yhb.17.2014.08.27.11.22.32 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Wed, 27 Aug 2014 11:22:32 -0700 (PDT) Message-ID: <53FE21A8.4000908@oracle.com> Date: Wed, 27 Aug 2014 14:21:28 -0400 From: Sasha Levin MIME-Version: 1.0 Subject: Re: mm: BUG in unmap_page_range References: <53DD5F20.8010507@oracle.com> <20140805144439.GW10819@suse.de> <53E17F06.30401@oracle.com> <53E989FB.5000904@oracle.com> <53FD4D9F.6050500@oracle.com> <20140827152622.GC12424@suse.de> In-Reply-To: <20140827152622.GC12424@suse.de> Content-Type: text/plain; charset=iso-8859-15 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Hugh Dickins , "linux-mm@kvack.org" , Andrew Morton , Dave Jones , LKML , "Kirill A. Shutemov" , Peter Zijlstra , Rik van Riel , Johannes Weiner , Cyrill Gorcunov On 08/27/2014 11:26 AM, Mel Gorman wrote: > Sasha, how long does it typically take to trigger this? Are you > using any particular switches for trinity that would trigger the bug > faster? It took couple of weeks (I've been running with it since the beginning of August). I don't have any special trinity options, just the default fuzzing. Do you think that focusing on any of the mm syscalls would increase the odds of hitting it? There's always the chance that this is a fluke due to corruption somewhere else. I'll keep running it with the new debug patch and if it won't reproduce any time soon we can probably safely assume that. Thanks, Sasha -- 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