Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755902AbaAWCWG (ORCPT ); Wed, 22 Jan 2014 21:22:06 -0500 Received: from mx1.redhat.com ([209.132.183.28]:47494 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753618AbaAWCWF (ORCPT ); Wed, 22 Jan 2014 21:22:05 -0500 Date: Wed, 22 Jan 2014 21:21:47 -0500 From: Dave Jones To: Sasha Levin Cc: David Rientjes , khlebnikov@openvz.org, Andrew Morton , "linux-mm@kvack.org" , LKML Subject: Re: mm: BUG: Bad rss-counter state Message-ID: <20140123022147.GA3221@redhat.com> Mail-Followup-To: Dave Jones , Sasha Levin , David Rientjes , khlebnikov@openvz.org, Andrew Morton , "linux-mm@kvack.org" , LKML References: <52E06B6F.90808@oracle.com> <20140123015241.GA947@redhat.com> <52E07B63.1070400@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <52E07B63.1070400@oracle.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 22, 2014 at 09:16:03PM -0500, Sasha Levin wrote: > On 01/22/2014 08:52 PM, Dave Jones wrote: > > Sasha, is this the current git tree version of Trinity ? > > (I'm wondering if yesterdays munmap changes might be tickling this bug). > > Ah yes, my tree has the munmap patch from yesterday, which would explain why we > started seeing this issue just now. So that change is basically allowing trinity to munmap just part of a prior mmap. So it may do things like.. mmap |--------------| munmap |----XXX-------| munmap |------XXX-----| ie, it might try unmapping some pages more than once, and may even overlap prior munmaps. until yesterdays change, it would only munmap the entire mmap. There's no easy way to tell exactly what happened without a trinity log of course. Dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/