From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751417Ab3LKPzG (ORCPT ); Wed, 11 Dec 2013 10:55:06 -0500 Received: from aserp1040.oracle.com ([141.146.126.69]:19698 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750707Ab3LKPzD (ORCPT ); Wed, 11 Dec 2013 10:55:03 -0500 Message-ID: <52A88ACC.4030103@oracle.com> Date: Wed, 11 Dec 2013 10:54:52 -0500 From: Sasha Levin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: Vlastimil Babka , Dave Jones , Linux Kernel , linux-mm@kvack.org, kirill.shutemov@linux.intel.com Subject: Re: oops in pgtable_trans_huge_withdraw References: <20131206210254.GA7962@redhat.com> <52A8877A.10209@suse.cz> In-Reply-To: <52A8877A.10209@suse.cz> Content-Type: text/plain; charset=ISO-8859-1; format=flowed 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 12/11/2013 10:40 AM, Vlastimil Babka wrote: > On 12/06/2013 10:02 PM, Dave Jones wrote: >> I've spent a few days enhancing trinity's use of mmap's, trying to make it >> reproduce https://lkml.org/lkml/2013/12/4/499 > > FYI, I managed to reproduce that using trinity today, > trinity was from git at commit e8912cc which is from Dec 09 so I guess your enhancements were > already there? > kernel was linux-next-20131209 > I was running trinity -c mmap -c munmap -c mremap -c remap_file_pages -c mlock -c munlock > > Now I'm running with Kirill's patch, will post results later. > > My goal was to reproduce Sasha Levin's BUG in munlock_vma_pages_range > https://lkml.org/lkml/2013/12/7/130 > > Perhaps it could be related as well. > Sasha, do you know at which commit your trinity clone was at? Didn't think those two were related. I've hit this one when I've started fuzzing too, but Kirill's patch solved it - so I've mostly ignored it. Trinity is usually pulled and updated before testing, so it's at whatever the latest Dave has pushed. Thanks, Sasha