From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755581AbaC0Pbh (ORCPT ); Thu, 27 Mar 2014 11:31:37 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:51092 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751469AbaC0Pbg (ORCPT ); Thu, 27 Mar 2014 11:31:36 -0400 Message-ID: <53344452.7090107@oracle.com> Date: Thu, 27 Mar 2014 11:31:30 -0400 From: Sasha Levin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: Hugh Dickins CC: "linux-mm@kvack.org" , Andrew Morton , LKML Subject: Re: mm: BUG: Bad page state in process ksmd References: <5332EE97.4050604@oracle.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Source-IP: acsinet21.oracle.com [141.146.126.237] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/27/2014 11:21 AM, Hugh Dickins wrote: > I've thought about this some, and slept on it, but don't yet see > how it comes about. I'll have to come back to it later. > > Was it a one-off, or do you find it fairly easy to reproduce? > > If the latter, it would be interesting to know if it comes from > recent changes or not. mm/mlock.c does appear to have been under > continuous revision for several releases (but barely changed in next). I can't say it's easy to reproduce but it did happen 5-6 times at this point. As far as I can tell there were no big changes in trinity for the last week or so while we were in lsf/mm, and this issue being reproducible makes me believe it has something to do with recent changes to mm code. Thanks, Sasha