Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756685AbYC1CNq (ORCPT ); Thu, 27 Mar 2008 22:13:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754568AbYC1CNh (ORCPT ); Thu, 27 Mar 2008 22:13:37 -0400 Received: from rtr.ca ([76.10.145.34]:2775 "EHLO mail.rtr.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754357AbYC1CNg (ORCPT ); Thu, 27 Mar 2008 22:13:36 -0400 Message-ID: <47EC544E.7090806@rtr.ca> Date: Thu, 27 Mar 2008 22:13:34 -0400 From: Mark Lord Organization: Real-Time Remedies Inc. User-Agent: Thunderbird 2.0.0.12 (X11/20080213) MIME-Version: 1.0 To: Greg KH Cc: jkosina@suse.cz, Linux Kernel , linux-usb@vger.kernel.org, Pavel Machek , Andrew Morton Subject: Re: 2.6.25-rc7: Ugh. References: <47EBBD57.30902@rtr.ca> <20080327160700.GB828@suse.de> <47EC53B8.2050601@rtr.ca> In-Reply-To: <47EC53B8.2050601@rtr.ca> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4423 Lines: 103 Mark Lord wrote: > Greg KH wrote: >> On Thu, Mar 27, 2008 at 11:29:27AM -0400, Mark Lord wrote: >>> It is with great reluctance when I attempt moving my main "desktop" >>> over to a new kernel version -- because the USB subsystem seems to >>> break every single time. >> >> That's not good, why not tell the linux-usb developers this? (added to >> the cc:) >> >>> So today I tried 2.6.25-rc7 on it for the first time. >>> Not good. >>> >>> It boots, but just a simple suspend/resume (RAM) was enough to kill it. >>> It comes back on resume, with an X desktop again, >>> but with no USB functionality -- no mouse. >>> >>> The keyboard still works, so I dropped to a console and tried: >>> >>> rmmod usbhid >>> insmod usbhid >>> >>> And the console hung at 100% CPU on the insmod. > .. > > Okay, correction there: it just hangs the console, but not 100% CPU. > Other tasks still continue running. > > Same thing happens when I rmmod usbhid, and then rmmod ehci_hcd. > The rmmod ehci_hcd hangs. > > But since the rest of the system is still alive, including the non-USB > touchpad(!), > here is the alt-sysrq-t from syslog: > > rmmod D f74c2ddc 0 4538 4492 > f6d3b200 00000086 f74c2c90 f74c2ddc c281e840 00000001 c01131be > 00000000 00000001 c0324a00 c0324a00 00000000 00000001 7fffffff > 7fffffff f653cea8 00000002 c02906f8 00000000 00000012 c038f6aa > 00000086 c011aa05 00000000 Call Trace: > [__wake_up_common+46/88] __wake_up_common+0x2e/0x58 > [schedule_timeout+19/134] schedule_timeout+0x13/0x86 > [wake_up_klogd+43/45] wake_up_klogd+0x2b/0x2d > [wait_for_common+205/308] wait_for_common+0xcd/0x134 > [default_wake_function+0/8] default_wake_function+0x0/0x8 > [__cancel_work_timer+237/312] __cancel_work_timer+0xed/0x138 > [wq_barrier_func+0/8] wq_barrier_func+0x0/0x8 > [] usb_remove_hcd+0x63/0xd7 [usbcore] > [] usb_hcd_pci_remove+0x15/0x68 [usbcore] > [pci_device_remove+22/53] pci_device_remove+0x16/0x35 > [__device_release_driver+88/118] __device_release_driver+0x58/0x76 > [driver_detach+122/182] driver_detach+0x7a/0xb6 > [bus_remove_driver+96/126] bus_remove_driver+0x60/0x7e > [pci_unregister_driver+30/95] pci_unregister_driver+0x1e/0x5f > [sys_delete_module+388/445] sys_delete_module+0x184/0x1bd > [remove_vma+49/54] remove_vma+0x31/0x36 > [do_page_fault+506/1232] do_page_fault+0x1fa/0x4d0 > [sysenter_past_esp+95/133] sysenter_past_esp+0x5f/0x85 > ======================= > > If nothing else, this should point to where USB is getting deadlocked. .. Oh, I also had a hung "lsusb" in another window at the same time: lsusb D f74c187c 0 4491 4397 f6d3bc80 00000082 f74c1730 f74c187c c2816840 00000000 c26cb440 f666bab8 00000003 c014b132 00000000 00000000 00000000 f75c1114 00000246 f75c111c f74c1730 c0291678 00000001 f74c1730 c01156bc f75c1120 f77e5f78 f75c1000 Call Trace: [handle_mm_fault+1205/1222] handle_mm_fault+0x4b5/0x4c6 [__down+194/212] __down+0xc2/0xd4 [default_wake_function+0/8] default_wake_function+0x0/0x8 [__down_failed+7/12] __down_failed+0x7/0xc [] usbdev_ioctl+0x42/0x1132 [usbcore] [dput+22/197] dput+0x16/0xc5 [__link_path_walk+2664/2969] __link_path_walk+0xa68/0xb99 [mntput_no_expire+17/92] mntput_no_expire+0x11/0x5c [path_walk+144/152] path_walk+0x90/0x98 [klist_del+24/59] klist_del+0x18/0x3b [klist_iter_exit+15/24] klist_iter_exit+0xf/0x18 [bus_find_device+87/97] bus_find_device+0x57/0x61 [kobject_get+15/19] kobject_get+0xf/0x13 [get_device+14/20] get_device+0xe/0x14 [] usb_get_dev+0xf/0x13 [usbcore] [] usbdev_open+0x13c/0x144 [usbcore] [chrdev_open+312/373] chrdev_open+0x138/0x175 [open_namei+582/1357] open_namei+0x246/0x54d [chrdev_open+0/373] chrdev_open+0x0/0x175 [__dentry_open+263/404] __dentry_open+0x107/0x194 [nameidata_to_filp+28/44] nameidata_to_filp+0x1c/0x2c [do_filp_open+43/49] do_filp_open+0x2b/0x31 [vfs_ioctl+71/93] vfs_ioctl+0x47/0x5d [do_vfs_ioctl+555/574] do_vfs_ioctl+0x22b/0x23e [sys_ioctl+44/69] sys_ioctl+0x2c/0x45 [sysenter_past_esp+95/133] sysenter_past_esp+0x5f/0x85 [schedule+53/1498] schedule+0x35/0x5da ======================= -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/