From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262902AbUEKL1x (ORCPT ); Tue, 11 May 2004 07:27:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262932AbUEKL1w (ORCPT ); Tue, 11 May 2004 07:27:52 -0400 Received: from 8.75.30.213.rev.vodafone.pt ([213.30.75.8]:47377 "EHLO odie.graycell.biz") by vger.kernel.org with ESMTP id S262910AbUEKL0U (ORCPT ); Tue, 11 May 2004 07:26:20 -0400 Subject: 2.6.6 Oops disconnecting speedtouch usb modem From: Nuno Ferreira To: linux-kernel@vger.kernel.org Content-Type: text/plain Organization: Graycell Message-Id: <1084274778.2262.7.camel@taz.graycell.biz> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.5.7 Date: Tue, 11 May 2004 12:26:18 +0100 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 11 May 2004 11:24:58.0718 (UTC) FILETIME=[97CDEFE0:01C4374A] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org After upgrading from 2.6.5 to 2.6.6 I got this error while disconnecting my Speedtouch USB ADSL modem. May 10 23:31:57 taz kernel: usb 1-1: USB disconnect, address 2 May 10 23:31:57 taz kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000004 May 10 23:31:57 taz kernel: printing eip: May 10 23:31:57 taz kernel: c02315d4 May 10 23:31:57 taz kernel: *pde = 00000000 May 10 23:31:57 taz kernel: Oops: 0000 [#1] May 10 23:31:57 taz kernel: CPU: 0 May 10 23:31:57 taz kernel: EIP: 0060:[destroy_async+84/128] Not tainted May 10 23:31:57 taz kernel: EFLAGS: 00010013 (2.6.6) May 10 23:31:57 taz kernel: EIP is at destroy_async+0x54/0x80 May 10 23:31:57 taz kernel: eax: dcd656ac ebx: 00000286 ecx: 00000000 edx: dcd65690 May 10 23:31:57 taz kernel: esi: dcd656ac edi: dcd65690 ebp: dd39e424 esp: ddd75ea0 May 10 23:31:57 taz kernel: ds: 007b es: 007b ss: 0068 May 10 23:31:57 taz kernel: Process khubd (pid: 5, threadinfo=ddd75000 task=ddfa6030) May 10 23:31:57 taz kernel: Stack: c022e368 ddd13294 c0330ba0 dd39e400 c02316c9 dcd65690 dcd656ac c022873a May 10 23:31:57 taz kernel: ddd13294 ddd13294 dd15f648 ddd132a4 c0330bc0 c01f6a94 ddd132a4 ddd132cc May 10 23:31:57 taz kernel: ddd132a4 dd39e4cc c01f6bc5 ddd132a4 ddd132fc ddd132a4 dd39e4cc c01f5b2d May 10 23:31:57 taz kernel: Call Trace: May 10 23:31:57 taz kernel: [usb_disable_interface+56/80] usb_disable_interface+0x38/0x50 May 10 23:31:57 taz kernel: [driver_disconnect+57/64] driver_disconnect+0x39/0x40 May 10 23:31:57 taz kernel: [usb_unbind_interface+122/128] usb_unbind_interface+0x7a/0x80 May 10 23:31:57 taz kernel: [device_release_driver+100/112] device_release_driver+0x64/0x70 May 10 23:31:57 taz kernel: [bus_remove_device+85/160] bus_remove_device+0x55/0xa0 May 10 23:31:57 taz kernel: [device_del+93/160] device_del+0x5d/0xa0 May 10 23:31:57 taz kernel: [device_unregister+19/48] device_unregister+0x13/0x30 May 10 23:31:57 taz kernel: [usb_disable_device+111/176] usb_disable_device+0x6f/0xb0 May 10 23:31:57 taz kernel: [usb_disconnect+150/240] usb_disconnect+0x96/0xf0 May 10 23:31:57 taz kernel: [hub_port_connect_change+625/640] hub_port_connect_change+0x271/0x280 May 10 23:31:57 taz kernel: [hub_port_status+67/176] hub_port_status+0x43/0xb0 May 10 23:31:57 taz kernel: [hub_events+672/768] hub_events+0x2a0/0x300 May 10 23:31:57 taz kernel: [hub_thread+45/240] hub_thread+0x2d/0xf0 May 10 23:31:57 taz kernel: [default_wake_function+0/32] default_wake_function+0x0/0x20 May 10 23:31:57 taz kernel: [hub_thread+0/240] hub_thread+0x0/0xf0 May 10 23:31:57 taz kernel: [kernel_thread_helper+5/20] kernel_thread_helper+0x5/0x14 May 10 23:31:57 taz kernel: May 10 23:31:57 taz kernel: Code: 8b 51 04 8b 01 89 50 04 89 02 89 49 04 89 09 53 9d 8b 41 20 I also had another problem before that one, modem_run complained that it couldn't read interrupts and exited. The connections stayed up, though. May 10 23:22:31 taz modem_run[1364]: [monitoring report] ADSL link went up May 10 23:22:50 taz modem_run[874]: ADSL synchronization has been obtained May 10 23:22:50 taz modem_run[874]: ADSL line is up (512 kbit/s down | 128 kbit/s up) May 10 23:22:50 taz modem_run[1364]: Error reading interrupts May 10 23:22:50 taz modem_run[1364]: [monitoring report] ADSL link went down May 10 23:22:51 taz modem_run[1364]: Device disconnected, shutting down Neither of these problems happen with the same setup running 2.6.5. I'll try to find more find more information about this second problem when I get home. Anyone else having problems with the speedtouch usb on 2.6.6? -- Nuno Ferreira