From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757735Ab0EKPNU (ORCPT ); Tue, 11 May 2010 11:13:20 -0400 Received: from cantor.suse.de ([195.135.220.2]:37905 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756248Ab0EKPM0 (ORCPT ); Tue, 11 May 2010 11:12:26 -0400 Date: Tue, 11 May 2010 08:03:20 -0700 From: Greg KH To: CaT Cc: =?iso-8859-1?Q?Am=E9rico?= Wang , Yong Zhang , lkml@zip.com.au, mtosatti@redhat.com, kvm@vger.kernel.org, linux-kernel , Avi Kivity Subject: Re: 2.6.33.3: possible recursive locking detected Message-ID: <20100511150320.GB14895@suse.de> References: <20100504070334.GN2657@zip.com.au> <4BDFDCD1.70202@redhat.com> <20100505023220.GC20236@windriver.com> <20100511113350.GW2657@zip.com.au> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20100511113350.GW2657@zip.com.au> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, May 11, 2010 at 09:33:50PM +1000, CaT wrote: > On Wed, May 05, 2010 at 10:52:50AM +0800, Américo Wang wrote: > > On Wed, May 5, 2010 at 10:32 AM, Yong Zhang wrote: > > > On Tue, May 04, 2010 at 11:37:37AM +0300, Avi Kivity wrote: > > >> On 05/04/2010 10:03 AM, CaT wrote: > > >> >I'm currently running 2.6.33.3 in a KVM instance emulating a core2duo > > >> >on 1 cpu with virtio HDs running on top of a core2duo host running 2.6.33.3. > > >> >qemu-kvm version 0.12.3. > > > > > > Can you try commit 6992f5334995af474c2b58d010d08bc597f0f2fe in the latest > > > kernel? > > > > > > > Hmm, 2.6.33 -stable has commit 846f99749ab68bbc7f75c74fec305de675b1a1bf? > > > > Actually, these 3 commits fixed it: > > > > 6992f5334995af474c2b58d010d08bc597f0f2fe sysfs: Use one lockdep class > > per sysfs ttribute. > > a2db6842873c8e5a70652f278d469128cb52db70 sysfs: Only take active > > references on attributes. > > e72ceb8ccac5f770b3e696e09bb673dca7024b20 sysfs: Remove sysfs_get/put_active_two > > > > However, there are many other patches needed to amend these, so I think > > it's not suitable for -stable to include, perhaps a revert of > > 846f99749ab68bbc7f75c74fec305de675b1a1bf is better. > > Slightly at a loss as to what to do, now. It's a virt instance so I can > apply patches at will but, well, clarity is good. :) Just ignore the lockdep warnings as they are bogus, or turn them off, or use .34-rc7, as they are resolved there. thanks, greg k-h