From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yh0-f46.google.com (mail-yh0-f46.google.com [209.85.213.46]) by kanga.kvack.org (Postfix) with ESMTP id 61E0E6B0035 for ; Tue, 11 Mar 2014 17:02:55 -0400 (EDT) Received: by mail-yh0-f46.google.com with SMTP id b6so6261072yha.5 for ; Tue, 11 Mar 2014 14:02:55 -0700 (PDT) Received: from aserp1040.oracle.com (aserp1040.oracle.com. [141.146.126.69]) by mx.google.com with ESMTPS id v46si38327526yhh.87.2014.03.11.14.02.54 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Tue, 11 Mar 2014 14:02:54 -0700 (PDT) Message-ID: <531F79F7.5090201@oracle.com> Date: Tue, 11 Mar 2014 17:02:47 -0400 From: Sasha Levin MIME-Version: 1.0 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 Sender: owner-linux-mm@kvack.org List-ID: To: Davidlohr Bueso Cc: Andrew Morton , "linux-mm@kvack.org" , Michel Lespinasse , Rik van Riel , Vlastimil Babka , LKML 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 -- 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