From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264647AbUEaOn7 (ORCPT ); Mon, 31 May 2004 10:43:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264646AbUEaOn7 (ORCPT ); Mon, 31 May 2004 10:43:59 -0400 Received: from khan.acc.umu.se ([130.239.18.139]:4065 "EHLO khan.acc.umu.se") by vger.kernel.org with ESMTP id S264641AbUEaOnx (ORCPT ); Mon, 31 May 2004 10:43:53 -0400 Date: Mon, 31 May 2004 16:43:48 +0200 From: David Weinehall To: Linux-Kernel Mailing List Subject: Oops at get_kobj_path_length with 2.6.5/2.6.6 on boot/resume Message-ID: <20040531144348.GX26838@khan.acc.umu.se> Mail-Followup-To: Linux-Kernel Mailing List Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.1i X-Accept-Language: Swedish, English X-GPG-Fingerprint: 7ACE 0FB0 7A74 F994 9B36 E1D1 D14E 8526 DC47 CA16 X-GPG-Key: http://www.acc.umu.se/~tao/files/pubkey_dc47ca16.gpg.asc Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I've experienced this oops several times with both 2.6.5 and 2.6.6 (Debian-variant of the kernel, have not yet tried the non-Debian variant, but I will unless someone can spot something obviously wrong helped by this oops-dump...) The context is usually bootup or resume, possibly also hotplug from docking station. The computer is an IBM Thinkpad T40. Restarting tasks...<6>usb 4-1: USB disconnect, address 2 Unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: c01a0486 *pde = 00000000 Oops: 0000 [#1] PREEMPT CPU: 0 EIP: 0060:[] Not tainted EFLAGS: 00010246 (2.6.6-1-686) EIP is at get_kobj_path_length+0x26/0x40 eax: 00000000 ebx: 00000000 ecx: ffffffff edx: de909138 esi: 00000001 edi: 00000000 ebp: ffffffff esp: de7e1dfc ds: 007b es: 007b ss: 0068 Process khubd (pid: 1720, threadinfo=de7e0000 task=de83a270) Stack: 0000015b d5176819 d5176800 dfb5b090 c01a0652 c02ec560 de909138 0000015b e0b2f040 c01615ed de7e1e3c d5176800 00000000 c02b44a0 e0b29d91 00000000 c0169f51 de909138 de909130 e0b2efe0 e0b2f040 c01a07f7 c028f726 c02ec560 Call Trace: [] kset_hotplug+0x152/0x290 [] lookup_hash+0x1d/0x30 [] dput+0x31/0x220 [] kobject_hotplug+0x67/0x70 [] kobject_del+0x1b/0x40 [] class_device_del+0x90/0xc0 [] hci_unregister_dev+0x10/0x90 [bluetooth] [] hci_usb_disconnect+0x35/0x90 [hci_usb] [] usb_unbind_interface+0x76/0x80 [usbcore] [] device_release_driver+0x66/0x70 [] bus_remove_device+0x55/0xa0 [] device_del+0x5d/0xa0 [] device_unregister+0x13/0x30 [] usb_disable_device+0x70/0xb0 [usbcore] [] usb_disconnect+0x94/0xf0 [usbcore] [] hub_port_connect_change+0x281/0x290 [usbcore] [] hub_port_status+0x43/0xb0 [usbcore] [] hub_events+0x2c7/0x340 [usbcore] [] hub_thread+0x35/0x100 [usbcore] [] ret_from_fork+0x6/0x14 [] default_wake_function+0x0/0x20 [] hub_thread+0x0/0x100 [usbcore] [] kernel_thread_helper+0x5/0x18 Code: f2 ae f7 d1 49 8b 52 24 8d 74 31 01 85 d2 75 ea 5b 89 f0 5e Regards: David Weinehall -- /) David Weinehall /) Northern lights wander (\ // Maintainer of the v2.0 kernel // Dance across the winter sky // \) http://www.acc.umu.se/~tao/ (/ Full colour fire (/