From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752827Ab2A1T4K (ORCPT ); Sat, 28 Jan 2012 14:56:10 -0500 Received: from bedivere.hansenpartnership.com ([66.63.167.143]:48081 "EHLO bedivere.hansenpartnership.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751656Ab2A1T4I (ORCPT ); Sat, 28 Jan 2012 14:56:08 -0500 Message-ID: <1327780565.2924.24.camel@dabdike.int.hansenpartnership.com> Subject: Hang deconfiguring network interface (in shutdown) on 3.3-rc1 From: James Bottomley To: Parisc List Cc: linux-kernel , netdev , Michael Chan , Paul McKenny Date: Sat, 28 Jan 2012 13:56:05 -0600 Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.1 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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