Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932460AbXAPJKU (ORCPT ); Tue, 16 Jan 2007 04:10:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932469AbXAPJKU (ORCPT ); Tue, 16 Jan 2007 04:10:20 -0500 Received: from wr-out-0506.google.com ([64.233.184.229]:2418 "EHLO wr-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932460AbXAPJKS (ORCPT ); Tue, 16 Jan 2007 04:10:18 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=kHFtKO2kp/jW23OBZFIT7mwzWatJgC8Tpjkazo8hdIjBg0pnLP/0VddOgUQ30XkgHIePWpG1fdwVrwLLZPEhV9IcuSKVxE/He9qFZ547UcP13T7mucJNGJAfIdZzzzeGzSRVq7WXiGap8bx+t4sKlfX8c46Kq9xcr0dyVz6Qbkw= Message-ID: <5a2cf1f60701160110v68342cf5lbc364ffae568cd1@mail.gmail.com> Date: Tue, 16 Jan 2007 10:10:15 +0100 From: "Jerome Lacoste" To: lkml Subject: khubd taking 100% CPU after unproperly removing USB webcam MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5103 Lines: 128 Hi, I unplugged my (second) webcam, forgotting to stop ekiga, and khubd is now taking 100% CPU. - lsusb doesn't return - /etc/init.d/udev restart didn't resolve the problem. Is that a problem one may want to investigate or should I just forget about it (problem being cause by a user error)? Is there a way for me to: - get more information about the problem ? I cannot strace not gdb attach to the kernel process. - solve the issue without restarting the computer - should I do something particular before unplugging a USB device (on windows there's this tray program to stop the USB device), should I just run some sort of lsof on the device to check if it is safe to remove it ? Cheers, Jerome [Pleased keep me CC'ed] DETAILS > uname -a Linux dolcevita 2.6.17-10-generic #2 SMP Tue Dec 5 22:28:26 UTC 2006 i686 GNU/Linux > lspci 00:00.0 Host bridge: Intel Corporation 82865G/PE/P DRAM Controller/Host-Hub Interface (rev 02) 00:02.0 VGA compatible controller: Intel Corporation 82865G Integrated Graphics Controller (rev 02) 00:1d.0 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 (rev 02) 00:1d.2 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #3 (rev 02) 00:1d.3 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #4 (rev 02) 00:1d.7 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2) 00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge (rev 02) 00:1f.1 IDE interface: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE Controller (rev 02) 00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev 02) 00:1f.3 SMBus: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02) 00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02) 01:07.0 Serial controller: Rockwell International HCF 56k Data/Fax/Voice/Spkp (w/Handset) Modem (rev 01) 01:0c.0 Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet Controller (rev 02) > dmesg ... [17238199.732000] usb 3-1: new full speed USB device using uhci_hcd and address 3 [17238199.924000] usb 3-1: configuration #1 chosen from 1 choice [17238200.568000] drivers/media/video/spca5xx /spca5xx-main.c : USB SPCA5XX camera found. Type Flexcam 100 (SPCA561A) [17238200.576000] usbcore: registered new driver spca5xx [17238200.576000] drivers/media/video/spca5xx/spca5xx-main.c: spca5xx driver 00.57.08 registered [17238225.180000 ] pwc Dumping frame 269. [17238225.280000] pwc Dumping frame 270. [17238225.380000] pwc Dumping frame 271. [17238225.480000] pwc Dumping frame 272. [17238225.580000] pwc Dumping frame 273. [17238225.680000] pwc Dumping frame 274. [17238225.780000] pwc Dumping frame 275. [17238225.880000] pwc Dumping frame 276. [17238225.980000] pwc Dumping frame 277. [17238226.080000] pwc Dumping frame 278. [17238226.180000] pwc Dumping frame 279. [17238226.280000] pwc Dumping frame 280. [17238230.680000] pwc Closing video device: 325 frames received, dumped 12 frames, 0 frames with errors. [17238231.996000] pwc type = 720 [17238232.000000] pwc type = 720 [17238232.000000] pwc set_video_mode(160x120 @ 10, palette 15). [17238232.000000] pwc decode_size = 1. [17238232.000000] pwc Using alternate setting 1. [17238232.888000] pwc type = 720 [17238232.892000] pwc type = 720 [17238232.892000] pwc set_video_mode(160x120 @ 10, palette 15). [17238232.892000] pwc decode_size = 1. [17238232.892000] pwc Using alternate setting 1. [17238233.468000] pwc type = 720 [17238233.472000] pwc type = 720 [17238233.472000] pwc set_video_mode(160x120 @ 10, palette 15). [17238233.472000] pwc decode_size = 1. [17238233.472000] pwc Using alternate setting 1. [17238233.632000] pwc type = 720 [17238233.632000] pwc type = 720 [17238233.632000] pwc set_video_mode(160x120 @ 10, palette 15). [17238233.632000] pwc decode_size = 1. [17238233.632000] pwc Using alternate setting 1. [17238233.992000] pwc type = 720 [17238233.996000] pwc type = 720 [17238233.996000] pwc set_video_mode(160x120 @ 10, palette 15). [17238233.996000] pwc decode_size = 1. [17238233.996000] pwc Using alternate setting 1. [17238234.736000] pwc type = 720 [17238234.736000] pwc type = 720 [17238234.736000] pwc set_video_mode(160x120 @ 10, palette 15). [17238234.736000] pwc decode_size = 1. [17238234.736000] pwc Using alternate setting 1. [17238446.704000] usb 3-1: USB disconnect, address 3 [17238446.704000] drivers/media/video/spca5xx/spca5xx-main.c: usb_submit_urb() ret -19 [17238446.704000] drivers/media/video/spca5xx/spca5xx-main.c: usb_submit_urb() ret -19 (note that the pwc camera is still plugged) - 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/