From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752128AbXCEKSL (ORCPT ); Mon, 5 Mar 2007 05:18:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752767AbXCEKSK (ORCPT ); Mon, 5 Mar 2007 05:18:10 -0500 Received: from smtp.osdl.org ([65.172.181.24]:39839 "EHLO smtp.osdl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752128AbXCEKSJ (ORCPT ); Mon, 5 Mar 2007 05:18:09 -0500 Date: Mon, 5 Mar 2007 02:17:28 -0800 From: Andrew Morton To: ebuddington@wesleyan.edu Cc: ebuddington@verizon.net, linux-kernel@vger.kernel.org, linux-usb-devel@lists.sourceforge.net Subject: Re: USB misbehavior causes system hang Message-Id: <20070305021728.4c36dd4b.akpm@linux-foundation.org> In-Reply-To: <20070227140610.GC6850@pool-71-123-99-133.spfdma.east.verizon.net> References: <20070227140610.GC6850@pool-71-123-99-133.spfdma.east.verizon.net> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > On Tue, 27 Feb 2007 09:06:21 -0500 Eric Buddington wrote: > 2.6.20-mm2 #1 Mon Feb 26 13:16:04 EST 2007 i686 unknown > > I have an external USB drive (WD MyBook 5000YS), which I use for backups. > > When I try to back up to it, it works for a while, but inevitably > starts resetting like mad, gives I/O errors, and then (here's the > problem), the softdog module reboots the system. > > --------------------------- > scsi1 : SCSI emulation for USB Mass Storage devices > input: Western Digital External HDD as /class/input/input8 > input: USB HID v1.11 Device [Western Digital External HDD] on usb-0000:00:03.2-6 > .2 > scsi 1:0:0:0: Direct-Access WD 5000YS External 106a PQ: 0 ANSI: 4 > SCSI device sda: 976773168 512-byte hdwr sectors (500108 MB) > sda: Write Protect is off > sda: assuming drive cache: write through > SCSI device sda: 976773168 512-byte hdwr sectors (500108 MB) > sda: Write Protect is off > sda: assuming drive cache: write through > sda: sda1 sda2 > sd 1:0:0:0: Attached scsi disk sda > sd 1:0:0:0: Attached scsi generic sg0 type 0 > reiser4[pdflush(194)]: disable_write_barrier (fs/reiser4/wander.c:234)[zam-1055] > : > NOTICE: md1 does not support write barriers, using synchronous write instead. > reiser4: sda2: found disk format 4.0.0. > > ---- (works fine here for a while, then:) ---------- > > usb 1-6.2: reset high speed USB device using ehci_hcd and address 36 > usb 1-6.2: device descriptor read/64, error -110 > usb 1-6.2: device descriptor read/64, error -110 > usb 1-6.2: reset high speed USB device using ehci_hcd and address 36 > usb 1-6.2: device descriptor read/64, error -110 > usb 1-6.2: device descriptor read/64, error -110 > usb 1-6.2: reset high speed USB device using ehci_hcd and address 36 > usb 1-6.2: device descriptor read/8, error -110 > usb 1-6.2: device descriptor read/8, error -110 > usb 1-6.2: reset high speed USB device using ehci_hcd and address 36 > usb 1-6.2: device descriptor read/8, error -110 > usb 1-6.2: device descriptor read/8, error -110 > sd 1:0:0:0: scsi: Device offlined - not ready after error recovery > sd 1:0:0:0: SCSI error: return code = 0x00050000 > end_request: I/O error, dev sda, sector 919931588 > sd 1:0:0:0: rejecting I/O to offline device > sd 1:0:0:0: SCSI error: return code = 0x00010000 > end_request: I/O error, dev sda, sector 919931828 > sd 1:0:0:0: rejecting I/O to offline device > sd 1:0:0:0: rejecting I/O to offline device > sd 1:0:0:0: rejecting I/O to offline device Does 2.6.20 do this? 2.6.21-rc1?