Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752423AbWCFVzs (ORCPT ); Mon, 6 Mar 2006 16:55:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752439AbWCFVzs (ORCPT ); Mon, 6 Mar 2006 16:55:48 -0500 Received: from mx1.redhat.com ([66.187.233.31]:9889 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S1752423AbWCFVzq (ORCPT ); Mon, 6 Mar 2006 16:55:46 -0500 Date: Mon, 6 Mar 2006 16:55:15 -0500 From: Dave Jones To: Jesper Juhl Cc: Jens Axboe , Linus Torvalds , Linux Kernel Mailing List , Andrew Morton , markhe@nextd.demon.co.uk, Andrea Arcangeli , Mike Christie , James Bottomley Subject: Re: Slab corruption in 2.6.16-rc5-mm2 Message-ID: <20060306215515.GE11565@redhat.com> Mail-Followup-To: Dave Jones , Jesper Juhl , Jens Axboe , Linus Torvalds , Linux Kernel Mailing List , Andrew Morton , markhe@nextd.demon.co.uk, Andrea Arcangeli , Mike Christie , James Bottomley References: <200603060117.16484.jesper.juhl@gmail.com> <200603062124.42223.jesper.juhl@gmail.com> <20060306203036.GQ4595@suse.de> <9a8748490603061341l50febef9o3cb480bdbdcf925f@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9a8748490603061341l50febef9o3cb480bdbdcf925f@mail.gmail.com> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 752 Lines: 25 On Mon, Mar 06, 2006 at 10:41:07PM +0100, Jesper Juhl wrote: > CONFIG_DEBUG_SLAB > CONFIG_PAGE_OWNER > CONFIG_DEBUG_VM > CONFIG_DEBUG_PAGEALLOC > > The resulting kernel boots and runs just fine (no Oops) and leaves > nothing in dmesg. > So, without the debugging options it appears to the user that > everything is OK - nasty. DEBUG_PAGEALLOC in particular is *fantastic* at making bugs hide. I've lost many an hour trying to pin bugs down due to that. Dave -- http://www.codemonkey.org.uk - 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/