From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qa0-f49.google.com (mail-qa0-f49.google.com [209.85.216.49]) by kanga.kvack.org (Postfix) with ESMTP id C9A506B009F for ; Tue, 11 Mar 2014 10:28:29 -0400 (EDT) Received: by mail-qa0-f49.google.com with SMTP id j7so1019622qaq.8 for ; Tue, 11 Mar 2014 07:28:29 -0700 (PDT) Received: from mx1.redhat.com (mx1.redhat.com. [209.132.183.28]) by mx.google.com with ESMTP id s10si10682326qas.115.2014.03.11.07.28.28 for ; Tue, 11 Mar 2014 07:28:28 -0700 (PDT) Date: Tue, 11 Mar 2014 10:28:17 -0400 From: Dave Jones Subject: Re: bad rss-counter message in 3.14rc5 Message-ID: <20140311142817.GA26517@redhat.com> References: <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> <531F0E39.9020100@oracle.com> <20140311134158.GD32390@moon> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140311134158.GD32390@moon> Sender: owner-linux-mm@kvack.org List-ID: To: Cyrill Gorcunov Cc: Sasha Levin , Andrew Morton , Linux Kernel , linux-mm@kvack.org, Linus Torvalds , Joonsoo Kim , Bob Liu , Konstantin Khlebnikov On Tue, Mar 11, 2014 at 05:41:58PM +0400, Cyrill Gorcunov wrote: > On Tue, Mar 11, 2014 at 09:23:05AM -0400, Sasha Levin wrote: > > >> > > >>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. > > After reading some more, I suppose the idea I had is wrong, investigating. > Will ping if I find something. I can rule it out anyway, I can reproduce this by telling trinity to do nothing other than mmap()'s. I'll try and narrow down the exact parameters. Dave -- 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