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Date:	Sun, 21 Oct 2012 13:59:14 +0200
From:	Daniel Mack <zonque@...il.com>
To:	"Artem S. Tashkinov" <t.artem@...os.com>
CC:	bp@...en8.de, pavel@....cz, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, security@...nel.org,
	linux-media@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: A reliable kernel panic (3.6.2) and system crash when visiting
 a particular website

On 21.10.2012 12:34, Daniel Mack wrote:
> On 21.10.2012 01:15, Artem S. Tashkinov wrote:
>> You don't get me - I have *no* VirtualBox (or any proprietary) modules running
>> - but I can reproduce this problem using *the same system running under* VirtualBox
>> in Windows 7 64.
>>
>> It's almost definitely either a USB driver bug or video4linux driver bug:
>>
>> I'm CC'ing linux-media and linux-usb mailing lists, the problem is described here:
>> https://lkml.org/lkml/2012/10/20/35
>> https://lkml.org/lkml/2012/10/20/148
>>
>> Here are  the last lines from my dmesg (with usbmon loaded):
>>
>> [  292.164833] hub 1-0:1.0: state 7 ports 8 chg 0000 evt 0002
>> [  292.168091] ehci_hcd 0000:00:1f.5: GetStatus port:1 status 00100a 0  ACK POWER sig=se0 PEC CSC
>> [  292.172063] hub 1-0:1.0: port 1, status 0100, change 0003, 12 Mb/s
>> [  292.174883] usb 1-1: USB disconnect, device number 2
>> [  292.178045] usb 1-1: unregistering device
>> [  292.183539] usb 1-1: unregistering interface 1-1:1.0
>> [  292.197034] usb 1-1: unregistering interface 1-1:1.1
>> [  292.204317] usb 1-1: unregistering interface 1-1:1.2
>> [  292.234519] usb 1-1: unregistering interface 1-1:1.3
>> [  292.236175] usb 1-1: usb_disable_device nuking all URBs
>> [  292.364429] hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x100
>> [  294.364279] hub 1-0:1.0: hub_suspend
>> [  294.366045] usb usb1: bus auto-suspend, wakeup 1
>> [  294.367375] ehci_hcd 0000:00:1f.5: suspend root hub
>> [  296.501084] usb usb1: usb wakeup-resume
>> [  296.508311] usb usb1: usb auto-resume
>> [  296.509833] ehci_hcd 0000:00:1f.5: resume root hub
>> [  296.560149] hub 1-0:1.0: hub_resume
>> [  296.562240] ehci_hcd 0000:00:1f.5: GetStatus port:1 status 001003 0  ACK POWER sig=se0 CSC CONNECT
>> [  296.566141] hub 1-0:1.0: port 1: status 0501 change 0001
>> [  296.670413] hub 1-0:1.0: state 7 ports 8 chg 0002 evt 0000
>> [  296.673222] hub 1-0:1.0: port 1, status 0501, change 0000, 480 Mb/s
>> [  297.311720] usb 1-1: new high-speed USB device number 3 using ehci_hcd
>> [  300.547237] usb 1-1: skipped 1 descriptor after configuration
>> [  300.549443] usb 1-1: skipped 4 descriptors after interface
>> [  300.552273] usb 1-1: skipped 2 descriptors after interface
>> [  300.556499] usb 1-1: skipped 1 descriptor after endpoint
>> [  300.559392] usb 1-1: skipped 2 descriptors after interface
>> [  300.560960] usb 1-1: skipped 1 descriptor after endpoint
>> [  300.562169] usb 1-1: skipped 2 descriptors after interface
>> [  300.563440] usb 1-1: skipped 1 descriptor after endpoint
>> [  300.564639] usb 1-1: skipped 2 descriptors after interface
>> [  300.565828] usb 1-1: skipped 2 descriptors after endpoint
>> [  300.567084] usb 1-1: skipped 9 descriptors after interface
>> [  300.569205] usb 1-1: skipped 1 descriptor after endpoint
>> [  300.570484] usb 1-1: skipped 53 descriptors after interface
>> [  300.595843] usb 1-1: default language 0x0409
>> [  300.602503] usb 1-1: USB interface quirks for this device: 2
>> [  300.605700] usb 1-1: udev 3, busnum 1, minor = 2
>> [  300.606959] usb 1-1: New USB device found, idVendor=046d, idProduct=081d
>> [  300.610298] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=1
>> [  300.613742] usb 1-1: SerialNumber: 48C5D2B0
>> [  300.617703] usb 1-1: usb_probe_device
>> [  300.620594] usb 1-1: configuration #1 chosen from 1 choice
>> [  300.639218] usb 1-1: adding 1-1:1.0 (config #1, interface 0)
>> [  300.640736] snd-usb-audio 1-1:1.0: usb_probe_interface
>> [  300.642307] snd-usb-audio 1-1:1.0: usb_probe_interface - got id
>> [  301.050296] usb 1-1: adding 1-1:1.1 (config #1, interface 1)
>> [  301.054897] usb 1-1: adding 1-1:1.2 (config #1, interface 2)
>> [  301.056934] uvcvideo 1-1:1.2: usb_probe_interface
>> [  301.058072] uvcvideo 1-1:1.2: usb_probe_interface - got id
>> [  301.059395] uvcvideo: Found UVC 1.00 device <unnamed> (046d:081d)
>> [  301.090173] input: UVC Camera (046d:081d) as /devices/pci0000:00/0000:00:1f.5/usb1/1-1/1-1:1.2/input/input7
> 
> That seems to be a Logitech model.
> 
>> [  301.111289] usb 1-1: adding 1-1:1.3 (config #1, interface 3)
>> [  301.131207] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
>> [  301.137066] usb 1-1: unlink qh16-0001/f48d64c0 start 2 [1/0 us]
>> [  301.156451] ehci_hcd 0000:00:1f.5: reused qh f48d64c0 schedule
>> [  301.158310] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
>> [  301.160238] usb 1-1: unlink qh16-0001/f48d64c0 start 2 [1/0 us]
>> [  301.196606] set resolution quirk: cval->res = 384
>> [  371.309569] e1000: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
>> [  390.729568] ehci_hcd 0000:00:1f.5: reused qh f48d64c0 schedule
>> f5ade900 2296555[  390.730023] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
>> 437 S Ii:1:003:7[  390.736394] usb 1-1: unlink qh16-0001/f48d64c0 start 2 [1/0 us]
>>  -115:128 16 <
>> f5ade900 2296566256 C Ii:1:003:7 -2:128 0
>> [  391.100896] ehci_hcd 0000:00:1f.5: reused qh f48d64c0 schedule
>> [  391.103188] usb 1-1: link qh16-0001/f48d64c0 start 2 [1/0 us]
>> f5ade900 2296926929 S Ii:1:003:7[  391.104889] usb 1-1: unlink qh16-0001/f48d64c0 start 2 [1/0 us]
>>  -115:128 16 <
>> f5ade900 2296937889 C Ii:1:003:7 -2:128 0
>> f5272300 2310382508 S Co:1:003:0 s 01 0b 0004 0001 0000 0
>> f5272300 2310407888 C Co:1:003:0 0 0
>> f5272300 2310408051 S Co:1:003:0 s 22 01 0100 0086 0003 3 = 80bb00
>> f5272300 2310412456 C Co:1:003:0 0 3 >
>> f5272300 2310412521 S Ci:1:003:0 s a2 81 0100 0086 0003 3 <
>> f5272300 2310415909 C Ci:1:003:0 0 0
>> f5272300 2310418133 S Zi:1:003:6 -115:8:0 1 -18:0:100 100 <
>> f5272600 2310418219 S Zi:1:003:6 -115:8:0 1 -18:0:100 100 <
>> f52720c0 2310418239 S Zi:1:003:6 -115:8:0 1 -18:0:100 100 <
>> f5272a80 2310418247 S Zi:1:003:6 -115:8:0 1 -18:0:100 100 <
>> f5272480 2310418256 S Zi:1:003:6 -115:8:0 1 -18:0:100 100 <
>> f52723c0 2310418264 S Zi:1:003:6 -115:8:0 1 -18:0:100 100 <
>> f5272d80 2310418272 S Zi:1:003:6 -115:8:0 1 -18:0:100 100 <
>> f5272b40 2310418280 S Zi:1:003:6 -115:8:0 1 -18:0:100 100 <

[...]

> I tried Chrome 22 on Ubuntu with a cheap Logitech USB webcam (different
> product ID than yours, though) under 3.6.0 and 3.6.2, and I can't
> reproduce the issue.

FWIW, I also tried Chrome 22 and Firefox 16 with kernel version 3.5.4
and 3.6.2 on Fedora 17 and everything worked as expected (with both an
external and the built-in webcam of a T420). Cheese and arecord also
work on all kernel versions and distributions I have tested so far.

So whatever causes your trouble, I assume it's rather specific to your
machine configuration and setup. More information is needed here.


Daniel

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