From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751988Ab0FPIWM (ORCPT ); Wed, 16 Jun 2010 04:22:12 -0400 Received: from cantor.suse.de ([195.135.220.2]:46836 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750979Ab0FPIWJ (ORCPT ); Wed, 16 Jun 2010 04:22:09 -0400 From: Oliver Neukum Organization: SUSE To: roma1390 Subject: Re: INFO: task khubd:271 blocked for more than 120 seconds. Date: Wed, 16 Jun 2010 10:22:32 +0200 User-Agent: KMail/1.12.4 (Linux/2.6.35-rc2-0.1-default+; KDE/4.3.5; x86_64; ; ) Cc: linux-kernel@vger.kernel.org, "linux-usb@vger.kernel.org" References: <4C18855E.5010508@gmail.com> In-Reply-To: <4C18855E.5010508@gmail.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201006161022.32398.oneukum@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Mittwoch, 16. Juni 2010 10:03:42 schrieb roma1390: > Hello, > > > We got this on our production system. Kernel: 2.6.26-2-amd64. > This seems to be related with http://bugzilla.kernel.org/show_bug.cgi?id=13316 and still is open. Sadly to have such long standing bugs in common used subsystems like USB. > > Jun 15 06:25:01 accelerator57 kernel: imklog 3.18.6, log source = /proc/kmsg started. > Jun 16 00:36:55 accelerator57 kernel: [600606.885265] usb 6-1: USB disconnect, address 3 > Jun 16 00:39:02 accelerator57 kernel: [600738.152638] INFO: task khubd:271 blocked for more than 120 seconds. > Jun 16 00:39:02 accelerator57 kernel: [600738.152682] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > Jun 16 00:39:02 accelerator57 kernel: [600738.155993] khubd D ffff810916ca1400 0 271 2 > Jun 16 00:39:02 accelerator57 kernel: [600738.156038] ffff810919523d50 0000000000000046 363030365b3e363c 36323538382e3630 > Jun 16 00:39:02 accelerator57 kernel: [600738.156118] ffff810919521470 ffff810916dad220 ffff8109195216f8 00000000a00745a2 > Jun 16 00:39:02 accelerator57 kernel: [600738.156197] ffff810919523da4 ffff810916ca1600 0000000000000286 ffff8109148851c0 > Jun 16 00:39:02 accelerator57 kernel: [600738.156245] Call Trace: > Jun 16 00:39:02 accelerator57 kernel: [600738.156308] [] usb_kill_urb+0xa8/0xdb > Jun 16 00:39:02 accelerator57 kernel: [600738.156612] [] autoremove_wake_function+0x0/0x2e > Jun 16 00:39:02 accelerator57 kernel: [600738.156660] [] usb_hcd_flush_endpoint+0xd4/0xeb > Jun 16 00:39:02 accelerator57 kernel: [600738.156707] [] usb_disable_endpoint+0x5b/0x6d > Jun 16 00:39:02 accelerator57 kernel: [600738.156752] [] usb_disable_device+0x25/0xe8 > Jun 16 00:39:02 accelerator57 kernel: [600738.156792] [] usb_disconnect+0x92/0x142 > Jun 16 00:39:02 accelerator57 kernel: [600738.156830] [] hub_thread+0x3f9/0xcfd > Jun 16 00:39:02 accelerator57 kernel: [600738.156868] [] autoremove_wake_function+0x0/0x2e > Jun 16 00:39:02 accelerator57 kernel: [600738.156910] [] hub_thread+0x0/0xcfd > Jun 16 00:39:02 accelerator57 kernel: [600738.156952] [] kthread+0x47/0x74 > Jun 16 00:39:02 accelerator57 kernel: [600738.156993] [] schedule_tail+0x27/0x5c > Jun 16 00:39:02 accelerator57 kernel: [600738.157036] [] child_rip+0xa/0x12 > Jun 16 00:39:02 accelerator57 kernel: [600738.157077] [] kthread+0x0/0x74 > Jun 16 00:39:02 accelerator57 kernel: [600738.157116] [] child_rip+0x0/0x12 > Jun 16 00:39:02 accelerator57 kernel: [600738.157154] Under which conditions did you get this? Physical unplug, S3 or S4? Regards Oliver