From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754555Ab2AaUQD (ORCPT ); Tue, 31 Jan 2012 15:16:03 -0500 Received: from mail-ee0-f46.google.com ([74.125.83.46]:37909 "EHLO mail-ee0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752530Ab2AaUQA (ORCPT ); Tue, 31 Jan 2012 15:16:00 -0500 From: Maciej Rutecki Reply-To: maciej.rutecki@gmail.com To: James Bottomley Subject: Re: Hang deconfiguring network interface (in shutdown) on 3.3-rc1 Date: Tue, 31 Jan 2012 21:15:53 +0100 User-Agent: KMail/1.13.7 (Linux/3.2.0; KDE/4.6.5; x86_64; ; ) Cc: Parisc List , "linux-kernel" , netdev , Michael Chan , Paul McKenny References: <1327780565.2924.24.camel@dabdike.int.hansenpartnership.com> In-Reply-To: <1327780565.2924.24.camel@dabdike.int.hansenpartnership.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <201201312115.53700.maciej.rutecki@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On sobota, 28 stycznia 2012 o 20:56:05 James Bottomley wrote: > It looks like it might be a tg3 or RCU issue. When I shut down my > parisc SMP 4 way system, I get an immediate hang here > > Deconfiguring network interfaces...Internet Systems Consortium DHCP > Client 4.1.1-P1 > Copyright 2004-2010 Internet Systems Consortium. > All rights reserved. > For info, please visit https://www.isc.org/software/dhcp/ > > Listening on LPF/eth0/00:30:6e:4b:15:59 > Sending on LPF/eth0/00:30:6e:4b:15:59 > Sending on Socket/fallback > DHCPRELEASE on eth0 to 153.66.140.171 port 67 > > Followed some seconds later by > > [ 5714.268000] INFO: rcu_sched detected stall on CPU 3 (t=15000 jiffies) > [ 5714.268000] Backtrace: > [ 5714.268000] [<000000004011fdd4>] show_stack+0x14/0x20 > [ 5714.268000] [<000000004011fdf8>] dump_stack+0x18/0x28 > [ 5714.268000] [<00000000401c1fec>] __rcu_pending+0xcc/0x5c8 > [ 5714.276000] [<00000000401c2d60>] rcu_check_callbacks+0x80/0xf8 > [ 5714.276000] INFO: rcu_sched detected stalls on CPUs/tasks: { 3} > (detected by 2, t=15002 jiffies) > [ 5714.276000] Backtrace: > [ 5714.276000] [<000000004011fdd4>] show_stack+0x14/0x20 > [ 5714.276000] [<000000004011fdf8>] dump_stack+0x18/0x28 > [ 5714.276000] [<00000000401c2484>] __rcu_pending+0x564/0x5c8 > [ 5714.276000] [<00000000401c2d60>] rcu_check_callbacks+0x80/0xf8 > [ 5714.276000] [<0000000040155dc8>] update_process_times+0x68/0xd8 > [ 5714.276000] [<0000000040121378>] timer_interrupt+0x1c0/0x220 > [ 5714.276000] [<00000000401b9cfc>] handle_irq_event_percpu+0xa4/0x2a0 > [ 5714.276000] [<00000000401be58c>] handle_percpu_irq+0x9c/0xd0 > [ 5714.276000] [<00000000401b9500>] generic_handle_irq+0x48/0x60 > [ 5714.276000] [<0000000040121a50>] do_cpu_irq_mask+0x1b8/0x2a8 > [ 5714.276000] [<0000000040105074>] intr_return+0x0/0x4 > [ 5714.276000] [<0000000040105074>] intr_return+0x0/0x4 > [ 5714.276000] [<00000000401296dc>] cpu_idle+0x74/0x80 > [ 5714.276000] [<000000004078e1d0>] smp_callin+0x150/0x1a0 > [ 5714.276000] > [ 5714.348000] [<0000000040155dc8>] update_process_times+0x68/0xd8 > [ 5714.348000] [<0000000040121378>] timer_interrupt+0x1c0/0x220 > [ 5714.356000] [<00000000401b9cfc>] handle_irq_event_percpu+0xa4/0x2a0 > [ 5714.364000] [<00000000401be58c>] handle_percpu_irq+0x9c/0xd0 > [ 5714.364000] [<00000000401b9500>] generic_handle_irq+0x48/0x60 > [ 5714.372000] [<0000000040121a50>] do_cpu_irq_mask+0x1b8/0x2a8 > [ 5714.372000] [<0000000040105074>] intr_return+0x0/0x4 > [ 5714.380000] > > This didn't happen in 3.2 > > Sysrq still works and sysrq-T shows ifconfig stuck: > > > [ 6030.376000] ifconfig R running task 0 1470 1452 > 0x00000014 > [ 6030.376000] Backtrace: > [ 6030.376000] [<000000004017c6c8>] scheduler_tick+0x180/0x1a0 > [ 6030.376000] [<0000000040155e1c>] update_process_times+0xbc/0xd8 > [ 6030.376000] [<0000000040121378>] timer_interrupt+0x1c0/0x220 > [ 6030.376000] [<00000000401b9d54>] handle_irq_event_percpu+0xfc/0x2a0 > [ 6030.376000] [<0000000040105074>] intr_return+0x0/0x4 > [ 6030.376000] [<000000004011c638>] _raw_spin_lock_bh+0x30/0x40 > [ 6030.376000] [<000000004011c620>] _raw_spin_lock_bh+0x18/0x40 > [ 6030.376000] [<000000001c6e3a64>] tg3_chip_reset+0x9c4/0x1328 [tg3] > [ 6030.376000] [<000000001c6eca9c>] tg3_halt+0xdc/0x1d8 [tg3] > [ 6030.376000] [<000000001c6f9964>] tg3_close+0x194/0x3f0 [tg3] > [ 6030.376000] [<0000000040411518>] __dev_close_many+0x100/0x178 > [ 6030.376000] [<0000000040415130>] __dev_close+0x30/0x50 > [ 6030.376000] [<000000004040ebf8>] __dev_change_flags+0xb0/0x1d0 > [ 6030.376000] [<00000000404113b0>] dev_change_flags+0x28/0x90 > [ 6030.376000] [<0000000040488d70>] devinet_ioctl+0x748/0x898 > [ 6030.376000] [<000000004048a5f4>] inet_ioctl+0x204/0x228 > > James I created a Bugzilla entry at https://bugzilla.kernel.org/show_bug.cgi?id=42707 for your bug report, please add your address to the CC list in there, thanks! -- Maciej Rutecki http://www.mrutecki.pl