From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261246AbULWOdd (ORCPT ); Thu, 23 Dec 2004 09:33:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261247AbULWOdd (ORCPT ); Thu, 23 Dec 2004 09:33:33 -0500 Received: from av2-2-sn3.vrr.skanova.net ([81.228.9.108]:65222 "EHLO av2-2-sn3.vrr.skanova.net") by vger.kernel.org with ESMTP id S261246AbULWOd3 (ORCPT ); Thu, 23 Dec 2004 09:33:29 -0500 To: linux-kernel@vger.kernel.org Cc: Dmitry Torokhov , Vojtech Pavlik , Andrew Morton Subject: OOPS when disconnecting USB mouse while its event device is in use From: Peter Osterlund Date: 23 Dec 2004 15:33:22 +0100 Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Running 2.6.10-rc3-bk15, I get an oops if I disconnect my USB mouse while a userspace program has the corresponding event device opened. I don't have this problem when running 2.6.10-rc3-mm1, which I think is because of this patch from bk-input. # 2004/10/21 23:50:25-05:00 dtor_core@ameritech.net # Input: evdev, joydev, mousedev, tsdev - remove class device and devfs # entry when hardware driver disconnects instead of waiting for # the last user to drop off. This way hardware drivers can be # unloaded at any time. Maybe it would be a good idea to merge this patch before 2.6.10. Dec 23 13:27:21 r3000 kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000 Dec 23 13:27:21 r3000 kernel: printing eip: Dec 23 13:27:21 r3000 kernel: c01c77e1 Dec 23 13:27:21 r3000 kernel: *pde = 00000000 Dec 23 13:27:21 r3000 kernel: Oops: 0000 [#1] Dec 23 13:27:21 r3000 kernel: PREEMPT Dec 23 13:27:21 r3000 kernel: Modules linked in: radeon snd_atiixp_modem nfsd exportfs lockd parport_pc lp parport autofs4 pcmcia sunrpc ipt_LOG ipt_limit ipt_state ipt_REJECT iptable_filter ipt_MASQUERADE iptable_nat ip_tables binfmt_misc dm_mod usbhid yenta_socket pcmcia_core ohci_hcd ehci_hcd usbcore 8139too ide_cd cdrom Dec 23 13:27:21 r3000 kernel: CPU: 0 Dec 23 13:27:21 r3000 kernel: EIP: 0060:[] Not tainted VLI Dec 23 13:27:21 r3000 kernel: EFLAGS: 00210246 (2.6.10-rc3-bk15) Dec 23 13:27:21 r3000 kernel: EIP is at get_kobj_path_length+0x1a/0x31 Dec 23 13:27:21 r3000 kernel: eax: 00000000 ebx: 00000000 ecx: ffffffff edx: df95dbb8 Dec 23 13:27:21 r3000 kernel: esi: 00000001 edi: 00000000 ebp: ffffffff esp: c9549e50 Dec 23 13:27:21 r3000 kernel: ds: 007b es: 007b ss: 0068 Dec 23 13:27:21 r3000 kernel: Process evdev (pid: 6278, threadinfo=c9548000 task=ceebf020) Dec 23 13:27:21 r3000 kernel: Stack: c03b3b60 df95db94 dfb02498 df95dbb8 c01c785a df95dbb8 00000001 0000000a Dec 23 13:27:21 r3000 kernel: c0228ad3 c03b3b60 df95db94 dfb02498 dfb0218c c023c758 df95dbb8 000000d0 Dec 23 13:27:21 r3000 kernel: c03b3b60 dfb02480 c957282a c03b3b48 c01caa54 c957282a 00000000 00000000 Dec 23 13:27:21 r3000 kernel: Call Trace: Dec 23 13:27:21 r3000 kernel: [] kobject_get_path+0x13/0x5f Dec 23 13:27:21 r3000 kernel: [] pty_write+0x51/0x5a Dec 23 13:27:21 r3000 kernel: [] class_hotplug+0x5e/0x19a Dec 23 13:27:21 r3000 kernel: [] vsprintf+0x27/0x2b Dec 23 13:27:21 r3000 kernel: [] kobject_hotplug+0x2c3/0x2df Dec 23 13:27:21 r3000 kernel: [] kobject_del+0x18/0x2d Dec 23 13:27:21 r3000 kernel: [] class_device_del+0x98/0xb4 Dec 23 13:27:21 r3000 kernel: [] class_device_unregister+0x10/0x1d Dec 23 13:27:21 r3000 kernel: [] evdev_free+0x1b/0x36 Dec 23 13:27:21 r3000 kernel: [] evdev_release+0x9a/0xc7 Dec 23 13:27:21 r3000 kernel: [] __fput+0xfc/0x13c Dec 23 13:27:21 r3000 kernel: [] filp_close+0x49/0x7b Dec 23 13:27:21 r3000 kernel: [] sys_close+0x5a/0xa2 Dec 23 13:27:21 r3000 kernel: [] sysenter_past_esp+0x52/0x75 Dec 23 13:27:21 r3000 kernel: Code: ff 85 c0 89 c3 74 ea 89 34 24 e8 ad d1 fb ff eb e0 55 bd ff ff ff ff 57 56 be 01 00 00 00 53 31 db 8b 54 24 14 8b 3a 89 e9 89 d8 ae f7 d1 49 8b 52 24 8d 74 31 01 85 d2 75 ea 5b 89 f0 5e 5f -- Peter Osterlund - petero2@telia.com http://web.telia.com/~u89404340