Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2993199AbXEBWNf (ORCPT ); Wed, 2 May 2007 18:13:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S2993194AbXEBWNf (ORCPT ); Wed, 2 May 2007 18:13:35 -0400 Received: from cantor2.suse.de ([195.135.220.15]:35448 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2993199AbXEBWNV (ORCPT ); Wed, 2 May 2007 18:13:21 -0400 Date: Wed, 2 May 2007 15:06:13 -0700 From: Greg KH To: Tilman Schmidt Cc: Andrew Morton , Kay Sievers , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Nick Piggin , Hugh Dickins Subject: Re: 2.6.21-rc7-mm2 crash: Eeek! page_mapcount(page) went negative! (-1) Message-ID: <20070502220613.GC21015@suse.de> References: <46338AEB.2070109@imap.cc> <20070428141024.887342bd.akpm@linux-foundation.org> <4636248E.7030309@imap.cc> <20070430112130.b64321d3.akpm@linux-foundation.org> <46364346.6030407@imap.cc> <20070430124638.10611058.akpm@linux-foundation.org> <46383742.9050503@imap.cc> <20070502001000.8460fb31.akpm@linux-foundation.org> <20070502074305.GA7761@suse.de> <1178098882.28231.1187661107@webmail.messagingengine.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1178098882.28231.1187661107@webmail.messagingengine.com> User-Agent: Mutt/1.5.15 (2007-04-06) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1288 Lines: 35 On Wed, May 02, 2007 at 11:41:22AM +0200, Tilman Schmidt wrote: > On Wed, 2 May 2007 00:43:05 -0700, "Greg KH" said: > > > > > And the winner is: > > > > > > > > gregkh-driver-driver-core-make-uevent-environment-available-in-uevent-file.patch > > > > > > > > Reverting only that from 2.6.21-rc7-mm2 gives me a working kernel > > > > again. > > > > Wait, even though this isn't good, it shouldn't have been hit by anyone, > > that file used to not be readable, so I doubt userspace would have been > > trying to read it... > > > > Tilman, what version of HAL and udev do you have on your machine? > > The ones that came with SuSE 10.0: > > hal-0.5.4-6.4 > udev-068git20050831-9 Ah, ok, that explains it, the really old libsysfs walks and opens all files in sysfs for some odd, strange, and broken reason. This has been fixed in newer versions, and explains why you are seeing this happen. I'll send my fix for this to Linus in a few hours. thanks for testing and tracking this down, I really appreciate it. greg k-h - 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/