From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pablo Neira Ayuso Subject: Re: netfilter: active obj WARN when cleaning up Date: Wed, 27 Nov 2013 00:07:09 +0100 Message-ID: <20131126230709.GA10948@localhost> References: <522B25B5.6000808@oracle.com> <5294F27D.4000108@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: kaber@trash.net, kadlec@blackhole.kfki.hu, "David S. Miller" , netfilter-devel@vger.kernel.org, coreteam@netfilter.org, netdev@vger.kernel.org, LKML To: Sasha Levin Return-path: Received: from mail.us.es ([193.147.175.20]:54523 "EHLO mail.us.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756538Ab3KZXHP (ORCPT ); Tue, 26 Nov 2013 18:07:15 -0500 Content-Disposition: inline In-Reply-To: <5294F27D.4000108@oracle.com> Sender: netfilter-devel-owner@vger.kernel.org List-ID: On Tue, Nov 26, 2013 at 02:11:57PM -0500, Sasha Levin wrote: > Ping? I still see this warning. Did your test include patch 0c3c6c00c6? > On 09/07/2013 09:10 AM, Sasha Levin wrote: > >Hi all, > > > >While fuzzing with trinity inside a KVM tools guest, running latest -next kernel, I've > >stumbled on the following: > > > >[ 418.311956] ------------[ cut here ]------------ > >[ 418.312449] WARNING: CPU: 6 PID: 4178 at lib/debugobjects.c:260 debug_print_object+0x8d/0xb0() > >[ 418.313243] ODEBUG: free active (active state 0) object type: timer_list hint: > >delayed_work_timer_fn+0x0/0x20 > >[ 418.314038] Modules linked in: > >[ 418.314038] CPU: 6 PID: 4178 Comm: kworker/u16:2 Tainted: G W 3.11.0-next-20130906-sasha > >#3984 > >[ 418.314038] Workqueue: netns cleanup_net > >[ 418.314038] 0000000000000104 ffff880410371a58 ffffffff841b7815 0000000000000104 > >[ 418.314038] ffff880410371aa8 ffff880410371a98 ffffffff8112540c ffff880410371a78 > >[ 418.314038] ffffffff853ea0ab ffff8800bdc68b80 ffffffff85a65c00 ffffffff87676658 > >[ 418.314038] Call Trace: > >[ 418.314038] [] dump_stack+0x52/0x87 > >[ 418.320315] [] warn_slowpath_common+0x8c/0xc0 > >[ 418.321040] [] warn_slowpath_fmt+0x46/0x50 > >[ 418.321101] [] debug_print_object+0x8d/0xb0 > >[ 418.321101] [] ? __queue_work+0x390/0x390 > >[ 418.321101] [] __debug_check_no_obj_freed+0xa5/0x220 > >[ 418.321101] [] ? kmem_cache_destroy+0x86/0xe0 > >[ 418.321101] [] debug_check_no_obj_freed+0x15/0x20 > >[ 418.321101] [] kmem_cache_free+0x197/0x340 > >[ 418.321101] [] kmem_cache_destroy+0x86/0xe0 > >[ 418.321101] [] nf_conntrack_cleanup_net_list+0x131/0x170 > >[ 418.321101] [] nf_conntrack_pernet_exit+0x5d/0x70 > >[ 418.321101] [] ops_exit_list+0x5e/0x70 > >[ 418.321101] [] cleanup_net+0xfb/0x1c0 > >[ 418.321101] [] process_one_work+0x338/0x550 > >[ 418.321101] [] ? process_one_work+0x260/0x550 > >[ 418.321883] [] worker_thread+0x215/0x350 > >[ 418.321883] [] ? manage_workers+0x180/0x180 > >[ 418.321883] [] kthread+0xe7/0xf0 > >[ 418.321883] [] ? __init_kthread_worker+0x70/0x70 > >[ 418.321883] [] ret_from_fork+0x7c/0xb0 > >[ 418.321883] [] ? __init_kthread_worker+0x70/0x70 > >[ 418.321883] ---[ end trace c974221542b61d0d ]--- > > > > > >Thanks, > >Sasha >