From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752470AbaCKOh7 (ORCPT ); Tue, 11 Mar 2014 10:37:59 -0400 Received: from mail-lb0-f175.google.com ([209.85.217.175]:43990 "EHLO mail-lb0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751296AbaCKOh5 (ORCPT ); Tue, 11 Mar 2014 10:37:57 -0400 Date: Tue, 11 Mar 2014 18:37:50 +0400 From: Cyrill Gorcunov To: Dave Jones Cc: Sasha Levin , Andrew Morton , Linux Kernel , linux-mm@kvack.org, Linus Torvalds , Joonsoo Kim , Bob Liu , Konstantin Khlebnikov Subject: Re: bad rss-counter message in 3.14rc5 Message-ID: <20140311143750.GE32390@moon> References: <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> <20140311142817.GA26517@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140311142817.GA26517@redhat.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 Tue, Mar 11, 2014 at 10:28:17AM -0400, Dave Jones wrote: > 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, iirc trinity can write log file pointing which exactly syscall sequence was passed, right? Share it too please. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-la0-f44.google.com (mail-la0-f44.google.com [209.85.215.44]) by kanga.kvack.org (Postfix) with ESMTP id 12DE86B00A2 for ; Tue, 11 Mar 2014 10:37:58 -0400 (EDT) Received: by mail-la0-f44.google.com with SMTP id hr13so5697606lab.17 for ; Tue, 11 Mar 2014 07:37:58 -0700 (PDT) Received: from mail-la0-x232.google.com (mail-la0-x232.google.com [2a00:1450:4010:c03::232]) by mx.google.com with ESMTPS id x2si22221470lad.132.2014.03.11.07.37.56 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 11 Mar 2014 07:37:57 -0700 (PDT) Received: by mail-la0-f50.google.com with SMTP id y1so5805893lam.9 for ; Tue, 11 Mar 2014 07:37:56 -0700 (PDT) Date: Tue, 11 Mar 2014 18:37:50 +0400 From: Cyrill Gorcunov Subject: Re: bad rss-counter message in 3.14rc5 Message-ID: <20140311143750.GE32390@moon> References: <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> <20140311142817.GA26517@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140311142817.GA26517@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: To: Dave Jones 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 10:28:17AM -0400, Dave Jones wrote: > 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, iirc trinity can write log file pointing which exactly syscall sequence was passed, right? Share it too please. -- 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