From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755444AbaCKVDB (ORCPT ); Tue, 11 Mar 2014 17:03:01 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:37515 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754358AbaCKVC7 (ORCPT ); Tue, 11 Mar 2014 17:02:59 -0400 Message-ID: <531F79F7.5090201@oracle.com> Date: Tue, 11 Mar 2014 17:02:47 -0400 From: Sasha Levin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: Davidlohr Bueso CC: Andrew Morton , "linux-mm@kvack.org" , Michel Lespinasse , Rik van Riel , Vlastimil Babka , LKML Subject: Re: mm: mmap_sem lock assertion failure in __mlock_vma_pages_range References: <531F6689.60307@oracle.com> <1394568453.2786.28.camel@buesod1.americas.hpqcorp.net> <20140311133051.bf5ca716ef189746ebcff431@linux-foundation.org> <531F75D1.3060909@oracle.com> <1394570844.2786.42.camel@buesod1.americas.hpqcorp.net> In-Reply-To: <1394570844.2786.42.camel@buesod1.americas.hpqcorp.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Source-IP: ucsinet21.oracle.com [156.151.31.93] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/11/2014 04:47 PM, Davidlohr Bueso wrote: >> Bingo! With the above patch: >> > >> >[ 243.565794] kernel BUG at mm/vmacache.c:76! >> >[ 243.566720] invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC >> >[ 243.568048] Dumping ftrace buffer: >> >[ 243.568740] (ftrace buffer empty) >> >[ 243.569481] Modules linked in: >> >[ 243.570203] CPU: 10 PID: 10073 Comm: trinity-c332 Tainted: G W 3.14.0-rc5-next-20140307-sasha-00010-g1f812cb-dirty #143 > and this is also part of the DEBUG_PAGEALLOC + trinity combo! I suspect > the root cause it the same as Fengguang's report. The BUG still happens without DEBUG_PAGEALLOC. Thanks, Sasha