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[Bug 559306] USB webcam (ov511) causes various system hangs
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Sat, 5 Dec 2009 16:59:43 +0000
  • Message-id: <20091205165943.4D3F5CC7CD@xxxxxxxxxxxxxxxxxxxxxx>
http://bugzilla.novell.com/show_bug.cgi?id=559306

http://bugzilla.novell.com/show_bug.cgi?id=559306#c3


--- Comment #3 from Alexander K├Ânig <alexander.koenig@xxxxxxxxxxx> 2009-12-05
16:59:39 UTC ---
modprobe ov511 does not create any problem - I must plug in the webcam to
reproduce the bug.


Comparison of behaviour on 11.1 and 11.2 (same machine):

lsmod on 11.1 before plugging in webcam - see attachment
lsmod on 11.1 after plugging in webcam - see attachment

tail of dmesg after plugging in web cam on 11.1

usb-storage: device scan complete
usb 5-1: new full speed USB device using ohci_hcd and address 2
usb 5-1: configuration #1 chosen from 1 choice
usb 5-1: New USB device found, idVendor=05a9, idProduct=a511
usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
ov511: USB OV511+ video device found
ov511: model: Generic Camera (no ID)
ov511: Sensor is an OV7620
ov511: Device at usb-0000:00:13.4-1 registered to minor 1
usbcore: registered new interface driver ov511
ov511: v1.64 for Linux 2.5 : ov511 USB Camera Driver


lsmod on 11.2 before plugging in webcam - see attachment
lsmod on 11.2 after plugging in webcam - see attachment

tail of dmesg after plugging in web cam on 11.2

[ 279.215022] usb 6-1: new full speed USB device using ohci_hcd and address 2
[ 279.358131] usb 6-1: New USB device found, idVendor=05a9, idProduct=a511
[ 279.358139] usb 6-1: New USB device strings: Mfr=0, Product=0,
SerialNumber=0
[ 279.358589] usb 6-1: configuration #1 chosen from 1 choice
[ 279.373814] ov511 6-1:1.0: USB OV511+ video device found
[ 279.374105] usb 6-1: model: Generic Camera (no ID)
[ 279.781192] usb 6-1: Sensor is an OV7620
[ 280.685471] ov511 6-1:1.0: Device at usb-0000:00:13.4-1 registered to minor
2

3 minutes later

[ 480.457162] INFO: task modprobe:6302 blocked for more than 120 seconds.
[ 480.457171] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 480.457178] modprobe D 0000000000000000 0 6302 1 0x00000000
[ 480.457188] ffff880115c11b58 0000000000000082 ffffffff8100d27e
0000000000013a00
[ 480.457196] 0000000000013a00 ffff880102c547f8 0000000000013a00
0000000000013a00
[ 480.457204] 0000000000013a00 0000000000013a00 ffff880102c547f8
0000000000013a00
[ 480.457214] Call Trace:
[ 480.457231] [<ffffffff81553e88>] __mutex_lock_slowpath+0x118/0x200
[ 480.457241] [<ffffffff8155392c>] mutex_lock+0x2c/0x60
[ 480.457257] [<ffffffffa013a5e8>] ov51x_probe+0x558/0x770 [ov511]
[ 480.457279] [<ffffffff813b4aee>] usb_probe_interface+0xde/0x260
[ 480.457290] [<ffffffff81355e27>] really_probe+0x77/0x230
[ 480.457299] [<ffffffff81356024>] driver_probe_device+0x44/0xa0
[ 480.457308] [<ffffffff81356133>] __driver_attach+0xb3/0xc0
[ 480.457316] [<ffffffff81354ea8>] bus_for_each_dev+0x78/0xc0
[ 480.457324] [<ffffffff81355b7c>] driver_attach+0x2c/0x50
[ 480.457332] [<ffffffff813553e8>] bus_add_driver+0x208/0x340
[ 480.457341] [<ffffffff81356558>] driver_register+0x88/0x160
[ 480.457349] [<ffffffff813b3c30>] usb_register_driver+0xd0/0x150
[ 480.457359] [<ffffffffa0004032>] usb_ov511_init+0x32/0x63 [ov511]
[ 480.457373] [<ffffffff8100906f>] do_one_initcall+0x3f/0x1f0
[ 480.457382] [<ffffffff810abc7f>] sys_init_module+0xff/0x270
[ 480.457391] [<ffffffff8100c682>] system_call_fastpath+0x16/0x1b
[ 480.457414] [<00007f466bed386a>] 0x7f466bed386a

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