From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arkadiusz Miskiewicz Subject: 3.9.0-rc8-00005-g824282c: [24988.276086] unregister_netdevice: waiting for tap0 to become free. Usage count = 1 Date: Thu, 25 Apr 2013 08:22:38 +0200 Message-ID: <201304250822.38944.a.miskiewicz@gmail.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE To: netdev@vger.kernel.org Return-path: Received: from mail-ea0-f173.google.com ([209.85.215.173]:33830 "EHLO mail-ea0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750758Ab3DYGWm convert rfc822-to-8bit (ORCPT ); Thu, 25 Apr 2013 02:22:42 -0400 Received: by mail-ea0-f173.google.com with SMTP id m14so1037381eaj.4 for ; Wed, 24 Apr 2013 23:22:41 -0700 (PDT) Received: from t400.localnet ([91.234.176.244]) by mx.google.com with ESMTPSA id cd3sm8436958eeb.6.2013.04.24.23.22.39 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 24 Apr 2013 23:22:40 -0700 (PDT) Sender: netdev-owner@vger.kernel.org List-ID: suspend & resume from ram on 3.9.0-rc8-00005-g824282c causes problem below. 3.8.x line doesn't have this problem. [23429.361300] Freezing user space processes ...=20 [23449.380695] Freezing of tasks failed after 20.01 seconds (1 tasks re= fusing to freeze, wq_busy=3D0): [23449.385438] openvpn D 0000000000000001 0 4668 1 0x= 00000006 [23449.390225] ffff88022a1f3b08 0000000000000046 ffff88022a1696c0 ffff= 88022a1f3fd8 [23449.395020] 0000000000012780 ffff88022a1f3fd8 ffffffff81611410 ffff= 88022a1696c0 [23449.399833] 00000000000000ce ffffffffa06e0978 0000000000000080 ffff= 880229b9c000 [23449.404619] Call Trace: [23449.409356] [] ? pneigh_queue_purge+0x2a/0x34 [23449.414163] [] ? neigh_ifdown+0xc0/0xd1 [23449.418942] [] ? lock_timer_base.isra.38+0x26/0x4= a [23449.423720] [] ? try_to_del_timer_sync+0x50/0x5c [23449.428484] [] schedule+0x60/0x62 [23449.433166] [] schedule_timeout+0x1aa/0x1fd [23449.437847] [] ? call_timer_fn+0x15f/0x15f [23449.442555] [] schedule_timeout_uninterruptible+0= x19/0x1b [23449.447244] [] msleep+0x16/0x1d [23449.451900] [] netdev_run_todo+0x175/0x245 [23449.456498] [] rtnl_unlock+0x9/0xb [23449.461131] [] tun_chr_close+0x2d/0x47 [tun] [23449.465699] [] __fput+0xf0/0x1e1 [23449.470227] [] ____fput+0x9/0xb [23449.474736] [] task_work_run+0x79/0x92 [23449.479169] [] do_exit+0x3b8/0x8ee [23449.483631] [] ? __dequeue_signal+0x16/0x114 [23449.488130] [] do_group_exit+0x6a/0x9d [23449.492662] [] get_signal_to_deliver+0x50f/0x554 [23449.497178] [] do_signal+0x48/0x49f [23449.501721] [] ? sys_futex+0x11a/0x14d [23449.506319] [] do_notify_resume+0x30/0x6d [23449.510881] [] int_signal+0x12/0x17 [23449.517219] Restarting tasks ... done. and that ends up with: [23527.916091] unregister_netdevice: waiting for tap0 to become free. U= sage count =3D 1 [23537.956095] unregister_netdevice: waiting for tap0 to become free. U= sage count =3D 1 [23548.196057] unregister_netdevice: waiting for tap0 to become free. U= sage count =3D 1 [23558.440052] unregister_netdevice: waiting for tap0 to become free. U= sage count =3D 1 [23568.684099] unregister_netdevice: waiting for tap0 to become free. U= sage count =3D 1 complete dmesg: http://pastebin.com/5Eq8dz8T --=20 Arkadiusz Mi=C5=9Bkiewicz, arekm / maven.pl [domain blocked by vger and= still no clue why]