From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756068Ab0FPIDu (ORCPT ); Wed, 16 Jun 2010 04:03:50 -0400 Received: from mail-fx0-f46.google.com ([209.85.161.46]:43728 "EHLO mail-fx0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755630Ab0FPIDq (ORCPT ); Wed, 16 Jun 2010 04:03:46 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; b=rCm3tIlnQKmFBhrSOpw1uiNRl+KpNRX89H/8iW345HVN5UrjXD3bM4eQ3i8Noo+GVn Div0IgoEbNNTV6jqkT2Jc9RYWPytpTqjhG0CXhDb5nnhMlvvRP27/c1o/lKb6b28LwG6 /gW8Kv39/J8RfXiSv2eeNGO5xBScFw81EMqrc= Message-ID: <4C18855E.5010508@gmail.com> Date: Wed, 16 Jun 2010 11:03:42 +0300 From: roma1390 User-Agent: Mozilla-Thunderbird 2.0.0.24 (X11/20100329) MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: INFO: task khubd:271 blocked for more than 120 seconds. Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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]