From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760024Ab3BZBzU (ORCPT ); Mon, 25 Feb 2013 20:55:20 -0500 Received: from aserp1040.oracle.com ([141.146.126.69]:21054 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752635Ab3BZBzR (ORCPT ); Mon, 25 Feb 2013 20:55:17 -0500 Message-ID: <512C15F0.6030907@oracle.com> Date: Mon, 25 Feb 2013 20:54:56 -0500 From: Sasha Levin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130113 Thunderbird/17.0.2 MIME-Version: 1.0 To: KOSAKI Motohiro CC: Andrew Morton , Hugh Dickins , Mel Gorman , Dave Jones , linux-mm , "linux-kernel@vger.kernel.org" Subject: Re: mm: BUG in mempolicy's sp_insert References: <512B677D.1040501@oracle.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Source-IP: ucsinet22.oracle.com [156.151.31.94] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/25/2013 08:52 PM, KOSAKI Motohiro wrote: > On Mon, Feb 25, 2013 at 8:30 AM, Sasha Levin wrote: >> Hi all, >> >> While fuzzing with trinity inside a KVM tools guest running latest -next kernel, >> I've stumbled on the following BUG: >> >> [13551.830090] ------------[ cut here ]------------ >> [13551.830090] kernel BUG at mm/mempolicy.c:2187! >> [13551.830090] invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC > > Unfortunately, I didn't reproduce this. I'll try it tonight. I've actually managed to reproduce it again since then, so it's not a one time fluke (which is a good sign a I guess). It did require about an hour of fuzzing just mm with trinity. Thanks, Sasha