From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f42.google.com (mail-pa0-f42.google.com [209.85.220.42]) by kanga.kvack.org (Postfix) with ESMTP id CF5D76B0098 for ; Tue, 11 Mar 2014 09:23:16 -0400 (EDT) Received: by mail-pa0-f42.google.com with SMTP id fb1so8882646pad.1 for ; Tue, 11 Mar 2014 06:23:15 -0700 (PDT) Received: from aserp1040.oracle.com (aserp1040.oracle.com. [141.146.126.69]) by mx.google.com with ESMTPS id zo6si20254921pbc.13.2014.03.11.06.23.14 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Tue, 11 Mar 2014 06:23:14 -0700 (PDT) Message-ID: <531F0E39.9020100@oracle.com> Date: Tue, 11 Mar 2014 09:23:05 -0400 From: Sasha Levin MIME-Version: 1.0 Subject: Re: bad rss-counter message in 3.14rc5 References: <20140305174503.GA16335@redhat.com> <20140305175725.GB16335@redhat.com> <20140307002210.GA26603@redhat.com> <20140311024906.GA9191@redhat.com> <20140310201340.81994295.akpm@linux-foundation.org> <20140310214612.3b4de36a.akpm@linux-foundation.org> <20140311045109.GB12551@redhat.com> <20140310220158.7e8b7f2a.akpm@linux-foundation.org> <20140311053017.GB14329@redhat.com> <20140311132024.GC32390@moon> In-Reply-To: <20140311132024.GC32390@moon> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Cyrill Gorcunov , Dave Jones Cc: Andrew Morton , Linux Kernel , linux-mm@kvack.org, Linus Torvalds , Joonsoo Kim , Bob Liu , Konstantin Khlebnikov On 03/11/2014 09:20 AM, Cyrill Gorcunov wrote: > On Tue, Mar 11, 2014 at 01:30:17AM -0400, Dave Jones wrote: >> > > > >> > > > I don't see any holes in regular migration. Do you know if this is >> > > > reproducible with CONFIG_NUMA_BALANCING=n or CONFIG_NUMA=n? >> > > >> > > CONFIG_NUMA_BALANCING was n already btw, so I'll do a NUMA=n run. >> > >> > There probably isn't much point unless trinity is using >> > sys_move_pages(). Is it? If so it would be interesting to disable >> > trinity's move_pages calls and see if it still fails. >> >> Ok, with move_pages excluded it still oopses. > > Dave, is it possible to somehow figure out was someone reading pagemap file > at moment of the bug triggering? We can sprinkle printk()s wherever might be useful, might not be 100% accurate but should be close enough to confirm/deny the theory. 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