From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 25 Sep 2001 19:11:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 25 Sep 2001 19:10:49 -0400 Received: from [195.223.140.107] ([195.223.140.107]:56048 "EHLO athlon.random") by vger.kernel.org with ESMTP id ; Tue, 25 Sep 2001 19:10:43 -0400 Date: Wed, 26 Sep 2001 01:11:16 +0200 From: Andrea Arcangeli To: Rik van Riel Cc: Olivier Sessink , linux-kernel@vger.kernel.org Subject: Re: weird memory related problems, negative memory usage or fake memory usage? Message-ID: <20010926011116.X8350@athlon.random> In-Reply-To: <20010926003626.L8350@athlon.random> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: ; from riel@conectiva.com.br on Tue, Sep 25, 2001 at 07:54:07PM -0300 X-GnuPG-Key-URL: http://e-mind.com/~andrea/aa.gnupg.asc X-PGP-Key-URL: http://e-mind.com/~andrea/aa.asc Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 25, 2001 at 07:54:07PM -0300, Rik van Riel wrote: > On Wed, 26 Sep 2001, Andrea Arcangeli wrote: > > On Mon, Sep 24, 2001 at 07:03:20PM -0300, Rik van Riel wrote: > > > On Mon, 24 Sep 2001, Olivier Sessink wrote: > > > > > PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND > > > > 1262 root 5 -10 50764 -1M 1320 S < 2.7 99.9 0:01 XFree86 > > > > > > It seems Andrea wasn't careful with the merge and > > > backed out some of the locking wrt mm->rss. > > > > thanks for forwarding this report, actually I just noticed this > > here and that's good so I can reproduce :) > > > > it is possible it is my mistake, but I don't think so, infact I > > don't recall to have changed rss stuff or locking around it. > > Mmm, then it could also be one of the bugs which got > fixed in -ac but where Linus never reacted to the possibly yes but maybe not, dunno right now or I would be just sending the fix inline in this email :). As said I never seen it before Ben's tlb shootdown was merged into mainline, but again I repeat it can _really_ be just an unlucky coincidence. But I guess because of this coincidence the tlb shootdown will be the first things I will audit tomorrow. Andrea