From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f41.google.com (mail-pa0-f41.google.com [209.85.220.41]) by kanga.kvack.org (Postfix) with ESMTP id 050D16B0031 for ; Thu, 27 Mar 2014 11:36:20 -0400 (EDT) Received: by mail-pa0-f41.google.com with SMTP id fa1so3660847pad.28 for ; Thu, 27 Mar 2014 08:36:20 -0700 (PDT) Received: from userp1040.oracle.com (userp1040.oracle.com. [156.151.31.81]) by mx.google.com with ESMTPS id ph6si1770583pab.308.2014.03.27.08.36.19 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Thu, 27 Mar 2014 08:36:20 -0700 (PDT) Message-ID: <53344452.7090107@oracle.com> Date: Thu, 27 Mar 2014 11:31:30 -0400 From: Sasha Levin MIME-Version: 1.0 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 Sender: owner-linux-mm@kvack.org List-ID: To: Hugh Dickins Cc: "linux-mm@kvack.org" , Andrew Morton , LKML 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 -- 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