Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751211AbWJMKzF (ORCPT ); Fri, 13 Oct 2006 06:55:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751245AbWJMKzF (ORCPT ); Fri, 13 Oct 2006 06:55:05 -0400 Received: from vstglbx99.vestmark.com ([208.50.5.99]:62992 "EHLO texas.hq.viviport.com") by vger.kernel.org with ESMTP id S1751211AbWJMKzD (ORCPT ); Fri, 13 Oct 2006 06:55:03 -0400 Date: Fri, 13 Oct 2006 06:55:02 -0400 From: nmeyers@vestmark.com To: Mike Galbraith Cc: linux-kernel@vger.kernel.org Subject: Re: Major slab mem leak with 2.6.17 / GCC 4.1.1 Message-ID: <20061013105502.GA9773@viviport.com> References: <20061013004918.GA8551@viviport.com> <1160727912.15431.11.camel@Homer.simpson.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1160727912.15431.11.camel@Homer.simpson.net> User-Agent: Mutt/1.5.11 X-OriginalArrivalTime: 13 Oct 2006 10:55:02.0535 (UTC) FILETIME=[08C6E970:01C6EEB6] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1647 Lines: 44 On Fri, Oct 13, 2006 at 08:25:12AM +0000, Mike Galbraith wrote: > On Thu, 2006-10-12 at 20:49 -0400, nmeyers@vestmark.com wrote: > > > I tried Catalin Marinas' kmemleak patches, and had to rebuild with > > GCC 3.4.6 because of a 4.1.1 compiler bug that prevents compilation > > of the patches. > > Yeah, seems any remotely recent gcc hates it. That puts a rather large > dent in usability. > > > And... building with 3.4.5 fixed the leak! So I guess I have very little > > detail to report - except that there's a nasty leak in 2.6.17 when built > > with 4.1.1. > > If you build using 3.4.5 _without_ the kmemleak patches, do you see the > leak again? (ie is kmemleak altering timing, or is kernel miscompiled) I wondered the same thing. I went back to the original source and .config - rebuilding with 3.4.6 (3.4.5 is a typo) fixed the leak. > > > If anyone has a version of kmemleak that I can build with 4.1.1, or > > any other suggestions for instrumentation, I'd be happy to gather more > > data - the problem is very easy for me to reproduce. > > I can only suggest trying latest/greatest to see if the issue is still > present, and if so, try to find a way that others may trigger it. I may just do that - apparently 4.1.2 is supposed to fix the kmemleak compile problem. My (admittedly lazy) inclination is to wait until that comes out in a Gentoo ebuild. Nathan > > -Mike > > - 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/