Kernel crashing with motion and USB Webcam

[imp1sh]

Very similar to #1873 I have sporadic crashes. They lead not only to a non-functioning software (i.e. motion) but also make raspberry non-reachable in network.
Display: none attached
USB Webcam: QuickCam Vision Pro for Mac
In Contrast to #1873 I'm using motion not hawkeye and YUYV but not MJPEG.
v4l2_palette 15
width 800
height 600
framerate 2

This is happening on a Raspberry 2
root@pi1:/etc/# /opt/vc/bin/vcgencmd version
Jan 31 2017 17:40:14
Copyright (c) 2012 Broadcom
version 8d94fbc3bbdde25c29b18a2572a5c60ee75c56f3 (clean) (release)

Full kernel log:

Mar  6 03:53:08 pi1 kernel: [221393.476689] ------------[ cut here ]------------
Mar  6 03:53:08 pi1 kernel: [221393.476762] WARNING: CPU: 0 PID: 7236 at fs/sysfs/group.c:237 sysfs_remove_group+0x98/0xa4()
Mar  6 03:53:08 pi1 kernel: [221393.476779] sysfs group c086a54c not found for kobject 'event0'
Mar  6 03:53:08 pi1 kernel: [221393.476792] Modules linked in: cfg80211 rfkill evdev uvcvideo videobuf2_vmalloc videobuf2_memops snd_usb_audio videobuf2_v4l2 videobuf2_core snd_hwdep v4l2_common snd_usbmidi_lib snd_rawmidi snd_seq_device videodev media snd_bcm2835 snd_pcm snd_timer snd bcm2835_gpiomem bcm2835_wdt uio_pdrv_genirq uio i2c_dev fuse ipv6
Mar  6 03:53:08 pi1 kernel: [221393.476916] CPU: 0 PID: 7236 Comm: motion Not tainted 4.4.47+ #961
Mar  6 03:53:08 pi1 kernel: [221393.476929] Hardware name: BCM2708
Mar  6 03:53:08 pi1 kernel: [221393.476994] [<c0016cfc>] (unwind_backtrace) from [<c0013c20>] (show_stack+0x20/0x24)
Mar  6 03:53:08 pi1 kernel: [221393.477031] [<c0013c20>] (show_stack) from [<c02e48fc>] (dump_stack+0x20/0x28)
Mar  6 03:53:08 pi1 kernel: [221393.477067] [<c02e48fc>] (dump_stack) from [<c0021f0c>] (warn_slowpath_common+0x8c/0xc4)
Mar  6 03:53:08 pi1 kernel: [221393.477096] [<c0021f0c>] (warn_slowpath_common) from [<c0021f84>] (warn_slowpath_fmt+0x40/0x48)
Mar  6 03:53:08 pi1 kernel: [221393.477123] [<c0021f84>] (warn_slowpath_fmt) from [<c019bfd8>] (sysfs_remove_group+0x98/0xa4)
Mar  6 03:53:08 pi1 kernel: [221393.477167] [<c019bfd8>] (sysfs_remove_group) from [<c03723d8>] (dpm_sysfs_remove+0x58/0x60)
Mar  6 03:53:08 pi1 kernel: [221393.477207] [<c03723d8>] (dpm_sysfs_remove) from [<c0367b6c>] (device_del+0x48/0x224)
Mar  6 03:53:08 pi1 kernel: [221393.477260] [<c0367b6c>] (device_del) from [<bf1e31ac>] (evdev_disconnect+0x28/0x54 [evdev])
Mar  6 03:53:08 pi1 kernel: [221393.477338] [<bf1e31ac>] (evdev_disconnect [evdev]) from [<c0413a0c>] (__input_unregister_device+0xa8/0x14c)
Mar  6 03:53:08 pi1 kernel: [221393.477373] [<c0413a0c>] (__input_unregister_device) from [<c0414334>] (input_unregister_device+0x50/0x84)
Mar  6 03:53:08 pi1 kernel: [221393.477500] [<c0414334>] (input_unregister_device) from [<bf1d2ab0>] (uvc_status_cleanup+0x40/0x44 [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.477624] [<bf1d2ab0>] (uvc_status_cleanup [uvcvideo]) from [<bf1c831c>] (uvc_delete+0x1c/0x12c [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.477731] [<bf1c831c>] (uvc_delete [uvcvideo]) from [<bf1c8554>] (uvc_release+0x44/0x48 [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.478170] [<bf1c8554>] (uvc_release [uvcvideo]) from [<bf115760>] (v4l2_device_release+0xc0/0xe8 [videodev])
Mar  6 03:53:08 pi1 kernel: [221393.478432] [<bf115760>] (v4l2_device_release [videodev]) from [<c0367264>] (device_release+0x3c/0xa0)
Mar  6 03:53:08 pi1 kernel: [221393.478472] [<c0367264>] (device_release) from [<c02e6b54>] (kobject_release+0x50/0x84)
Mar  6 03:53:08 pi1 kernel: [221393.478500] [<c02e6b54>] (kobject_release) from [<c02e6bd4>] (kobject_put+0x4c/0x7c)
Mar  6 03:53:08 pi1 kernel: [221393.478527] [<c02e6bd4>] (kobject_put) from [<c036760c>] (put_device+0x24/0x28)
Mar  6 03:53:08 pi1 kernel: [221393.478772] [<c036760c>] (put_device) from [<bf115480>] (v4l2_release+0x60/0x88 [videodev])
Mar  6 03:53:08 pi1 kernel: [221393.479039] [<bf115480>] (v4l2_release [videodev]) from [<c012e724>] (__fput+0x98/0x1dc)
Mar  6 03:53:08 pi1 kernel: [221393.479075] [<c012e724>] (__fput) from [<c012e8d0>] (____fput+0x18/0x1c)
Mar  6 03:53:08 pi1 kernel: [221393.479112] [<c012e8d0>] (____fput) from [<c003b4c0>] (task_work_run+0x78/0xa8)
Mar  6 03:53:08 pi1 kernel: [221393.479155] [<c003b4c0>] (task_work_run) from [<c0013524>] (do_work_pending+0xe0/0xe4)
Mar  6 03:53:08 pi1 kernel: [221393.479186] [<c0013524>] (do_work_pending) from [<c000f848>] (slow_work_pending+0xc/0x20)
Mar  6 03:53:08 pi1 kernel: [221393.479203] ---[ end trace 46797110a8c742ff ]---
Mar  6 03:53:08 pi1 motion: [1] [ERR] [ALL] motion_loop: Video device fatal error - Closing video device
Mar  6 03:53:08 pi1 motion: [1] [NTC] [VID] vid_close: Closing video device /dev/video0
Mar  6 03:53:08 pi1 kernel: [221393.493098] Indeed it is in host mode hprt0 = 00021501
Mar  6 03:53:08 pi1 kernel: [221393.564769] ------------[ cut here ]------------
Mar  6 03:53:08 pi1 kernel: [221393.564857] WARNING: CPU: 0 PID: 7236 at fs/sysfs/group.c:237 sysfs_remove_group+0x98/0xa4()
Mar  6 03:53:08 pi1 kernel: [221393.564873] sysfs group c086a54c not found for kobject 'input0'
Mar  6 03:53:08 pi1 kernel: [221393.564902] Modules linked in: cfg80211 rfkill evdev uvcvideo videobuf2_vmalloc videobuf2_memops snd_usb_audio videobuf2_v4l2 videobuf2_core snd_hwdep v4l2_common snd_usbmidi_lib snd_rawmidi snd_seq_device videodev media snd_bcm2835 snd_pcm snd_timer snd bcm2835_gpiomem bcm2835_wdt uio_pdrv_genirq uio i2c_dev fuse ipv6
Mar  6 03:53:08 pi1 kernel: [221393.565049] CPU: 0 PID: 7236 Comm: motion Tainted: G        W       4.4.47+ #961
Mar  6 03:53:08 pi1 kernel: [221393.565063] Hardware name: BCM2708
Mar  6 03:53:08 pi1 kernel: [221393.565127] [<c0016cfc>] (unwind_backtrace) from [<c0013c20>] (show_stack+0x20/0x24)
Mar  6 03:53:08 pi1 kernel: [221393.565185] [<c0013c20>] (show_stack) from [<c02e48fc>] (dump_stack+0x20/0x28)
Mar  6 03:53:08 pi1 kernel: [221393.565225] [<c02e48fc>] (dump_stack) from [<c0021f0c>] (warn_slowpath_common+0x8c/0xc4)
Mar  6 03:53:08 pi1 kernel: [221393.565255] [<c0021f0c>] (warn_slowpath_common) from [<c0021f84>] (warn_slowpath_fmt+0x40/0x48)
Mar  6 03:53:08 pi1 kernel: [221393.565306] [<c0021f84>] (warn_slowpath_fmt) from [<c019bfd8>] (sysfs_remove_group+0x98/0xa4)
Mar  6 03:53:08 pi1 kernel: [221393.565354] [<c019bfd8>] (sysfs_remove_group) from [<c03723d8>] (dpm_sysfs_remove+0x58/0x60)
Mar  6 03:53:08 pi1 kernel: [221393.565396] [<c03723d8>] (dpm_sysfs_remove) from [<c0367b6c>] (device_del+0x48/0x224)
Mar  6 03:53:08 pi1 kernel: [221393.565466] [<c0367b6c>] (device_del) from [<c0413a88>] (__input_unregister_device+0x124/0x14c)
Mar  6 03:53:08 pi1 kernel: [221393.565504] [<c0413a88>] (__input_unregister_device) from [<c0414334>] (input_unregister_device+0x50/0x84)
Mar  6 03:53:08 pi1 kernel: [221393.565661] [<c0414334>] (input_unregister_device) from [<bf1d2ab0>] (uvc_status_cleanup+0x40/0x44 [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.565807] [<bf1d2ab0>] (uvc_status_cleanup [uvcvideo]) from [<bf1c831c>] (uvc_delete+0x1c/0x12c [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.565943] [<bf1c831c>] (uvc_delete [uvcvideo]) from [<bf1c8554>] (uvc_release+0x44/0x48 [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.566411] [<bf1c8554>] (uvc_release [uvcvideo]) from [<bf115760>] (v4l2_device_release+0xc0/0xe8 [videodev])
Mar  6 03:53:08 pi1 kernel: [221393.566720] [<bf115760>] (v4l2_device_release [videodev]) from [<c0367264>] (device_release+0x3c/0xa0)
Mar  6 03:53:08 pi1 kernel: [221393.566800] [<c0367264>] (device_release) from [<c02e6b54>] (kobject_release+0x50/0x84)
Mar  6 03:53:08 pi1 kernel: [221393.566835] [<c02e6b54>] (kobject_release) from [<c02e6bd4>] (kobject_put+0x4c/0x7c)
Mar  6 03:53:08 pi1 kernel: [221393.566863] [<c02e6bd4>] (kobject_put) from [<c036760c>] (put_device+0x24/0x28)
Mar  6 03:53:08 pi1 kernel: [221393.567122] [<c036760c>] (put_device) from [<bf115480>] (v4l2_release+0x60/0x88 [videodev])
Mar  6 03:53:08 pi1 kernel: [221393.567424] [<bf115480>] (v4l2_release [videodev]) from [<c012e724>] (__fput+0x98/0x1dc)
Mar  6 03:53:08 pi1 kernel: [221393.567484] [<c012e724>] (__fput) from [<c012e8d0>] (____fput+0x18/0x1c)
Mar  6 03:53:08 pi1 kernel: [221393.567526] [<c012e8d0>] (____fput) from [<c003b4c0>] (task_work_run+0x78/0xa8)
Mar  6 03:53:08 pi1 kernel: [221393.567589] [<c003b4c0>] (task_work_run) from [<c0013524>] (do_work_pending+0xe0/0xe4)
Mar  6 03:53:08 pi1 kernel: [221393.567622] [<c0013524>] (do_work_pending) from [<c000f848>] (slow_work_pending+0xc/0x20)
Mar  6 03:53:08 pi1 kernel: [221393.567656] ---[ end trace 46797110a8c74300 ]---
Mar  6 03:53:08 pi1 kernel: [221393.577182] ------------[ cut here ]------------
Mar  6 03:53:08 pi1 kernel: [221393.577251] WARNING: CPU: 0 PID: 7236 at fs/sysfs/group.c:237 sysfs_remove_group+0x98/0xa4()
Mar  6 03:53:08 pi1 kernel: [221393.577287] sysfs group c08761e0 not found for kobject 'input0'
Mar  6 03:53:08 pi1 kernel: [221393.577300] Modules linked in: cfg80211 rfkill evdev uvcvideo videobuf2_vmalloc videobuf2_memops snd_usb_audio videobuf2_v4l2 videobuf2_core snd_hwdep v4l2_common snd_usbmidi_lib snd_rawmidi snd_seq_device videodev media snd_bcm2835 snd_pcm snd_timer snd bcm2835_gpiomem bcm2835_wdt uio_pdrv_genirq uio i2c_dev fuse ipv6
Mar  6 03:53:08 pi1 kernel: [221393.577445] CPU: 0 PID: 7236 Comm: motion Tainted: G        W       4.4.47+ #961
Mar  6 03:53:08 pi1 kernel: [221393.577458] Hardware name: BCM2708
Mar  6 03:53:08 pi1 kernel: [221393.577525] [<c0016cfc>] (unwind_backtrace) from [<c0013c20>] (show_stack+0x20/0x24)
Mar  6 03:53:08 pi1 kernel: [221393.577583] [<c0013c20>] (show_stack) from [<c02e48fc>] (dump_stack+0x20/0x28)
Mar  6 03:53:08 pi1 kernel: [221393.577620] [<c02e48fc>] (dump_stack) from [<c0021f0c>] (warn_slowpath_common+0x8c/0xc4)
Mar  6 03:53:08 pi1 kernel: [221393.577734] [<c0021f0c>] (warn_slowpath_common) from [<c0021f84>] (warn_slowpath_fmt+0x40/0x48)
Mar  6 03:53:08 pi1 kernel: [221393.577774] [<c0021f84>] (warn_slowpath_fmt) from [<c019bfd8>] (sysfs_remove_group+0x98/0xa4)
Mar  6 03:53:08 pi1 kernel: [221393.577826] [<c019bfd8>] (sysfs_remove_group) from [<c019c018>] (sysfs_remove_groups+0x34/0x44)
Mar  6 03:53:08 pi1 kernel: [221393.577860] [<c019c018>] (sysfs_remove_groups) from [<c036718c>] (device_remove_attrs+0x60/0x7c)
Mar  6 03:53:08 pi1 kernel: [221393.577894] [<c036718c>] (device_remove_attrs) from [<c0367c34>] (device_del+0x110/0x224)
Mar  6 03:53:08 pi1 kernel: [221393.577960] [<c0367c34>] (device_del) from [<c0413a88>] (__input_unregister_device+0x124/0x14c)
Mar  6 03:53:08 pi1 kernel: [221393.577995] [<c0413a88>] (__input_unregister_device) from [<c0414334>] (input_unregister_device+0x50/0x84)
Mar  6 03:53:08 pi1 kernel: [221393.578146] [<c0414334>] (input_unregister_device) from [<bf1d2ab0>] (uvc_status_cleanup+0x40/0x44 [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.578290] [<bf1d2ab0>] (uvc_status_cleanup [uvcvideo]) from [<bf1c831c>] (uvc_delete+0x1c/0x12c [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.578425] [<bf1c831c>] (uvc_delete [uvcvideo]) from [<bf1c8554>] (uvc_release+0x44/0x48 [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.578881] [<bf1c8554>] (uvc_release [uvcvideo]) from [<bf115760>] (v4l2_device_release+0xc0/0xe8 [videodev])
Mar  6 03:53:08 pi1 kernel: [221393.579174] [<bf115760>] (v4l2_device_release [videodev]) from [<c0367264>] (device_release+0x3c/0xa0)
Mar  6 03:53:08 pi1 kernel: [221393.579237] [<c0367264>] (device_release) from [<c02e6b54>] (kobject_release+0x50/0x84)
Mar  6 03:53:08 pi1 kernel: [221393.579272] [<c02e6b54>] (kobject_release) from [<c02e6bd4>] (kobject_put+0x4c/0x7c)
Mar  6 03:53:08 pi1 kernel: [221393.579320] [<c02e6bd4>] (kobject_put) from [<c036760c>] (put_device+0x24/0x28)
Mar  6 03:53:08 pi1 kernel: [221393.579579] [<c036760c>] (put_device) from [<bf115480>] (v4l2_release+0x60/0x88 [videodev])
Mar  6 03:53:08 pi1 kernel: [221393.579875] [<bf115480>] (v4l2_release [videodev]) from [<c012e724>] (__fput+0x98/0x1dc)
Mar  6 03:53:08 pi1 kernel: [221393.579936] [<c012e724>] (__fput) from [<c012e8d0>] (____fput+0x18/0x1c)
Mar  6 03:53:08 pi1 kernel: [221393.579974] [<c012e8d0>] (____fput) from [<c003b4c0>] (task_work_run+0x78/0xa8)
Mar  6 03:53:08 pi1 kernel: [221393.580021] [<c003b4c0>] (task_work_run) from [<c0013524>] (do_work_pending+0xe0/0xe4)
Mar  6 03:53:08 pi1 kernel: [221393.580077] [<c0013524>] (do_work_pending) from [<c000f848>] (slow_work_pending+0xc/0x20)
Mar  6 03:53:08 pi1 kernel: [221393.580096] ---[ end trace 46797110a8c74301 ]---
Mar  6 03:53:08 pi1 kernel: [221393.586210] ------------[ cut here ]------------
Mar  6 03:53:08 pi1 kernel: [221393.586281] WARNING: CPU: 0 PID: 7236 at fs/sysfs/group.c:237 sysfs_remove_group+0x98/0xa4()
Mar  6 03:53:08 pi1 kernel: [221393.586318] sysfs group c0876114 not found for kobject 'input0'
Mar  6 03:53:08 pi1 kernel: [221393.586331] Modules linked in: cfg80211 rfkill evdev uvcvideo videobuf2_vmalloc videobuf2_memops snd_usb_audio videobuf2_v4l2 videobuf2_core snd_hwdep v4l2_common snd_usbmidi_lib snd_rawmidi snd_seq_device videodev media snd_bcm2835 snd_pcm snd_timer snd bcm2835_gpiomem bcm2835_wdt uio_pdrv_genirq uio i2c_dev fuse ipv6
Mar  6 03:53:08 pi1 kernel: [221393.586477] CPU: 0 PID: 7236 Comm: motion Tainted: G        W       4.4.47+ #961
Mar  6 03:53:08 pi1 kernel: [221393.586490] Hardware name: BCM2708
Mar  6 03:53:08 pi1 kernel: [221393.586572] [<c0016cfc>] (unwind_backtrace) from [<c0013c20>] (show_stack+0x20/0x24)
Mar  6 03:53:08 pi1 kernel: [221393.586610] [<c0013c20>] (show_stack) from [<c02e48fc>] (dump_stack+0x20/0x28)
Mar  6 03:53:08 pi1 kernel: [221393.586649] [<c02e48fc>] (dump_stack) from [<c0021f0c>] (warn_slowpath_common+0x8c/0xc4)
Mar  6 03:53:08 pi1 kernel: [221393.586699] [<c0021f0c>] (warn_slowpath_common) from [<c0021f84>] (warn_slowpath_fmt+0x40/0x48)
Mar  6 03:53:08 pi1 kernel: [221393.586728] [<c0021f84>] (warn_slowpath_fmt) from [<c019bfd8>] (sysfs_remove_group+0x98/0xa4)
Mar  6 03:53:08 pi1 kernel: [221393.586757] [<c019bfd8>] (sysfs_remove_group) from [<c019c018>] (sysfs_remove_groups+0x34/0x44)
Mar  6 03:53:08 pi1 kernel: [221393.586811] [<c019c018>] (sysfs_remove_groups) from [<c036718c>] (device_remove_attrs+0x60/0x7c)
Mar  6 03:53:08 pi1 kernel: [221393.586844] [<c036718c>] (device_remove_attrs) from [<c0367c34>] (device_del+0x110/0x224)
Mar  6 03:53:08 pi1 kernel: [221393.586892] [<c0367c34>] (device_del) from [<c0413a88>] (__input_unregister_device+0x124/0x14c)
Mar  6 03:53:08 pi1 kernel: [221393.586947] [<c0413a88>] (__input_unregister_device) from [<c0414334>] (input_unregister_device+0x50/0x84)
Mar  6 03:53:08 pi1 kernel: [221393.587083] [<c0414334>] (input_unregister_device) from [<bf1d2ab0>] (uvc_status_cleanup+0x40/0x44 [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.587229] [<bf1d2ab0>] (uvc_status_cleanup [uvcvideo]) from [<bf1c831c>] (uvc_delete+0x1c/0x12c [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.587376] [<bf1c831c>] (uvc_delete [uvcvideo]) from [<bf1c8554>] (uvc_release+0x44/0x48 [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.587842] [<bf1c8554>] (uvc_release [uvcvideo]) from [<bf115760>] (v4l2_device_release+0xc0/0xe8 [videodev])
Mar  6 03:53:08 pi1 kernel: [221393.588136] [<bf115760>] (v4l2_device_release [videodev]) from [<c0367264>] (device_release+0x3c/0xa0)
Mar  6 03:53:08 pi1 kernel: [221393.588200] [<c0367264>] (device_release) from [<c02e6b54>] (kobject_release+0x50/0x84)
Mar  6 03:53:08 pi1 kernel: [221393.588231] [<c02e6b54>] (kobject_release) from [<c02e6bd4>] (kobject_put+0x4c/0x7c)
Mar  6 03:53:08 pi1 kernel: [221393.588261] [<c02e6bd4>] (kobject_put) from [<c036760c>] (put_device+0x24/0x28)
Mar  6 03:53:08 pi1 kernel: [221393.588541] [<c036760c>] (put_device) from [<bf115480>] (v4l2_release+0x60/0x88 [videodev])
Mar  6 03:53:08 pi1 kernel: [221393.588840] [<bf115480>] (v4l2_release [videodev]) from [<c012e724>] (__fput+0x98/0x1dc)
Mar  6 03:53:08 pi1 kernel: [221393.588903] [<c012e724>] (__fput) from [<c012e8d0>] (____fput+0x18/0x1c)
Mar  6 03:53:08 pi1 kernel: [221393.588960] [<c012e8d0>] (____fput) from [<c003b4c0>] (task_work_run+0x78/0xa8)
Mar  6 03:53:08 pi1 kernel: [221393.589006] [<c003b4c0>] (task_work_run) from [<c0013524>] (do_work_pending+0xe0/0xe4)
Mar  6 03:53:08 pi1 kernel: [221393.589061] [<c0013524>] (do_work_pending) from [<c000f848>] (slow_work_pending+0xc/0x20)
Mar  6 03:53:08 pi1 kernel: [221393.589081] ---[ end trace 46797110a8c74302 ]---
Mar  6 03:53:08 pi1 kernel: [221393.589419] ------------[ cut here ]------------
Mar  6 03:53:08 pi1 kernel: [221393.589465] WARNING: CPU: 0 PID: 7236 at fs/sysfs/group.c:237 sysfs_remove_group+0x98/0xa4()
Mar  6 03:53:08 pi1 kernel: [221393.589481] sysfs group c086a54c not found for kobject 'media0'
Mar  6 03:53:08 pi1 kernel: [221393.589492] Modules linked in: cfg80211 rfkill evdev uvcvideo videobuf2_vmalloc videobuf2_memops snd_usb_audio videobuf2_v4l2 videobuf2_core snd_hwdep v4l2_common snd_usbmidi_lib snd_rawmidi snd_seq_device videodev media snd_bcm2835 snd_pcm snd_timer snd bcm2835_gpiomem bcm2835_wdt uio_pdrv_genirq uio i2c_dev fuse ipv6
Mar  6 03:53:08 pi1 kernel: [221393.589639] CPU: 0 PID: 7236 Comm: motion Tainted: G        W       4.4.47+ #961
Mar  6 03:53:08 pi1 kernel: [221393.589667] Hardware name: BCM2708
Mar  6 03:53:08 pi1 kernel: [221393.589722] [<c0016cfc>] (unwind_backtrace) from [<c0013c20>] (show_stack+0x20/0x24)
Mar  6 03:53:08 pi1 kernel: [221393.589758] [<c0013c20>] (show_stack) from [<c02e48fc>] (dump_stack+0x20/0x28)
Mar  6 03:53:08 pi1 kernel: [221393.589816] [<c02e48fc>] (dump_stack) from [<c0021f0c>] (warn_slowpath_common+0x8c/0xc4)
Mar  6 03:53:08 pi1 kernel: [221393.589847] [<c0021f0c>] (warn_slowpath_common) from [<c0021f84>] (warn_slowpath_fmt+0x40/0x48)
Mar  6 03:53:08 pi1 kernel: [221393.589875] [<c0021f84>] (warn_slowpath_fmt) from [<c019bfd8>] (sysfs_remove_group+0x98/0xa4)
Mar  6 03:53:08 pi1 kernel: [221393.589939] [<c019bfd8>] (sysfs_remove_group) from [<c03723d8>] (dpm_sysfs_remove+0x58/0x60)
Mar  6 03:53:08 pi1 kernel: [221393.589980] [<c03723d8>] (dpm_sysfs_remove) from [<c0367b6c>] (device_del+0x48/0x224)
Mar  6 03:53:08 pi1 kernel: [221393.590012] [<c0367b6c>] (device_del) from [<c0367d64>] (device_unregister+0x1c/0x30)
Mar  6 03:53:08 pi1 kernel: [221393.590113] [<c0367d64>] (device_unregister) from [<bf10ceb0>] (media_devnode_unregister+0x64/0x6c [media])
Mar  6 03:53:08 pi1 kernel: [221393.590217] [<bf10ceb0>] (media_devnode_unregister [media]) from [<bf10ca40>] (media_device_unregister+0x84/0x8c [media])
Mar  6 03:53:08 pi1 kernel: [221393.590356] [<bf10ca40>] (media_device_unregister [media]) from [<bf1c8424>] (uvc_delete+0x124/0x12c [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.590511] [<bf1c8424>] (uvc_delete [uvcvideo]) from [<bf1c8554>] (uvc_release+0x44/0x48 [uvcvideo])
Mar  6 03:53:08 pi1 kernel: [221393.590914] [<bf1c8554>] (uvc_release [uvcvideo]) from [<bf115760>] (v4l2_device_release+0xc0/0xe8 [videodev])
Mar  6 03:53:08 pi1 kernel: [221393.591205] [<bf115760>] (v4l2_device_release [videodev]) from [<c0367264>] (device_release+0x3c/0xa0)
Mar  6 03:53:08 pi1 kernel: [221393.591270] [<c0367264>] (device_release) from [<c02e6b54>] (kobject_release+0x50/0x84)
Mar  6 03:53:08 pi1 kernel: [221393.591322] [<c02e6b54>] (kobject_release) from [<c02e6bd4>] (kobject_put+0x4c/0x7c)
Mar  6 03:53:08 pi1 kernel: [221393.591352] [<c02e6bd4>] (kobject_put) from [<c036760c>] (put_device+0x24/0x28)
Mar  6 03:53:08 pi1 kernel: [221393.591614] [<c036760c>] (put_device) from [<bf115480>] (v4l2_release+0x60/0x88 [videodev])
Mar  6 03:53:08 pi1 kernel: [221393.591924] [<bf115480>] (v4l2_release [videodev]) from [<c012e724>] (__fput+0x98/0x1dc)
Mar  6 03:53:08 pi1 kernel: [221393.592163] [<c012e724>] (__fput) from [<c012e8d0>] (____fput+0x18/0x1c)
Mar  6 03:53:08 pi1 kernel: [221393.592236] [<c012e8d0>] (____fput) from [<c003b4c0>] (task_work_run+0x78/0xa8)
Mar  6 03:53:08 pi1 kernel: [221393.592285] [<c003b4c0>] (task_work_run) from [<c0013524>] (do_work_pending+0xe0/0xe4)
Mar  6 03:53:08 pi1 kernel: [221393.592340] [<c0013524>] (do_work_pending) from [<c000f848>] (slow_work_pending+0xc/0x20)
Mar  6 03:53:08 pi1 kernel: [221393.592359] ---[ end trace 46797110a8c74303 ]---
Mar  6 03:53:08 pi1 kernel: [221393.932753] usb 1-1: new high-speed USB device number 5 using dwc_otg
Mar  6 03:53:08 pi1 kernel: [221393.933006] Indeed it is in host mode hprt0 = 00001101
Mar  6 03:53:08 pi1 kernel: [221394.274374] usb 1-1: New USB device found, idVendor=0424, idProduct=9512
Mar  6 03:53:08 pi1 kernel: [221394.274413] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
Mar  6 03:53:08 pi1 kernel: [221394.288551] hub 1-1:1.0: USB hub found
Mar  6 03:53:08 pi1 kernel: [221394.288761] hub 1-1:1.0: 3 ports detected
Mar  6 03:53:09 pi1 kernel: [221394.572797] usb 1-1.1: new high-speed USB device number 6 using dwc_otg
Mar  6 03:53:09 pi1 kernel: [221394.673338] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
Mar  6 03:53:09 pi1 kernel: [221394.673376] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
Mar  6 03:53:09 pi1 kernel: [221394.689861] smsc95xx v1.0.4
Mar  6 03:53:09 pi1 kernel: [221394.775589] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-20980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:11:a5:fd
Mar  6 03:53:09 pi1 kernel: [221394.852785] usb 1-1.2: new high-speed USB device number 7 using dwc_otg
Mar  6 03:53:09 pi1 kernel: [221395.120220] usb 1-1.2: New USB device found, idVendor=046d, idProduct=09a6
Mar  6 03:53:09 pi1 kernel: [221395.120260] usb 1-1.2: New USB device strings: Mfr=0, Product=0, SerialNumber=2
Mar  6 03:53:09 pi1 kernel: [221395.120279] usb 1-1.2: SerialNumber: 47AD8B20
Mar  6 03:53:09 pi1 kernel: [221395.121960] uvcvideo: Found UVC 1.00 device <unnamed> (046d:09a6)
Mar  6 03:53:09 pi1 kernel: [221395.148425] input: UVC Camera (046d:09a6) as /devices/platform/soc/20980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/input/input1
Mar  6 03:53:10 pi1 motion: [1] [WRN] [ALL] motion_loop: Retrying until successful connection with camera
Mar  6 03:53:10 pi1 motion: [1] [NTC] [VID] vid_v4lx_start: Using videodevice /dev/video0 and input -1
Mar  6 03:53:10 pi1 motion: [1] [ALR] [VID] vid_v4lx_start: Failed to open video device /dev/video0:
Mar  6 03:53:10 pi1 kernel: [221396.027542] usb 1-1.2: Warning! Unlikely big volume range (=5120), cval->res is probably wrong.
Mar  6 03:53:10 pi1 kernel: [221396.027587] usb 1-1.2: [5] FU [Mic Capture Volume] ch = 1, val = 2816/7936/1

[6by9]

Almost certainly no link to #1873 - one is using USB and the other the CSI2 interface via the GPU.

Those kernel logs don't have anything interesting. The
sysfs group c086a54c not found for kobject 'blah'
messages are a known upstream bug if you close a USB webcam whilst something has a handle open on it.
https://www.spinics.net/lists/linux-media/msg108882.html

Something else that you haven't quoted has caused the USB stack to trip up (network is over USB as well), which results in these warnings.

[imp1sh]

Here's what happened before:

Mar  6 03:40:00 pi1 motion: [1] [NTC] [EVT] event_newfile: File of type 2 saved to: /var/lib/motion/snapshot/20170306-034000-snapshot.jpg
Mar  6 03:40:00 pi1 rsyslogd-2007: action 'action 17' suspended, next retry is Mon Mar  6 03:41:30 2017 [try http://www.rsyslog.com/e/2007 ]
Mar  6 03:46:42 pi1 kernel: [221008.300389] uvcvideo: Non-zero status (-5) in status completion handler.
Mar  6 03:46:42 pi1 rsyslogd-2007: action 'action 17' suspended, next retry is Mon Mar  6 03:48:12 2017 [try http://www.rsyslog.com/e/2007 ]
Mar  6 03:50:17 pi1 motion: [0] [ERR] [ALL] main: Thread 1 - Watchdog timeout, trying to do a graceful restart
Mar  6 03:50:30 pi1 motion: [1] [NTC] [ALL] motion_loop: Thread exiting
Mar  6 03:50:30 pi1 rsyslogd-2007: action 'action 17' suspended, next retry is Mon Mar  6 03:52:00 2017 [try http://www.rsyslog.com/e/2007 ]
Mar  6 03:50:30 pi1 motion: [1] [NTC] [STR] stream_stop: Closing motion-stream listen socket & active motion-stream sockets
Mar  6 03:50:30 pi1 motion: [1] [NTC] [STR] stream_stop: Closed motion-stream listen socket & active motion-stream sockets
Mar  6 03:50:30 pi1 motion: [1] [NTC] [VID] vid_close: Closing video device /dev/video0
Mar  6 03:50:30 pi1 motion: [0] [NTC] [ALL] main: Motion thread 1 restart
Mar  6 03:50:30 pi1 motion: [1] [NTC] [ALL] motion_init: Thread 1 started , motion detection Enabled
Mar  6 03:50:30 pi1 motion: [1] [NTC] [VID] vid_v4lx_start: Using videodevice /dev/video0 and input -1
Mar  6 03:50:30 pi1 motion: [1] [NTC] [VID] v4l2_get_capability: #012------------------------#012cap.driver: "uvcvideo"#012cap.card: "UVC Camera (046d:09a6)"#012cap.bus_info: "usb-20980000.usb-1.2"#012cap.capabilities=0x84200001#012------------------------
Mar  6 03:50:30 pi1 motion: [1] [NTC] [VID] v4l2_get_capability: - VIDEO_CAPTURE
Mar  6 03:50:30 pi1 motion: [1] [NTC] [VID] v4l2_get_capability: - STREAMING
Mar  6 03:50:30 pi1 motion: [1] [NTC] [VID] v4l2_select_input: name = "Camera 1", type 0x00000002, status 00000000
Mar  6 03:50:30 pi1 motion: [1] [NTC] [VID] v4l2_select_input: - CAMERA
Mar  6 03:50:30 pi1 motion: [1] [WRN] [VID] v4l2_select_input: Device doesn't support VIDIOC_G_STD
Mar  6 03:50:30 pi1 motion: [1] [NTC] [VID] v4l2_do_set_pix_format: Testing palette YUYV (800x600)
Mar  6 03:50:30 pi1 motion: [1] [NTC] [VID] v4l2_do_set_pix_format: Using palette YUYV (800x600) bytesperlines 1600 sizeimage 960000 colorspace 00000008
Mar  6 03:50:30 pi1 motion: [1] [NTC] [VID] v4l2_scan_controls: found control 0x00980900, "Brightness", range 0,255
Mar  6 03:50:30 pi1 motion: [1] [NTC] [VID] v4l2_scan_controls: #011"Brightness", default -8193, current 128
Mar  6 03:50:30 pi1 motion: [1] [NTC] [VID] v4l2_scan_controls: found control 0x00980901, "Contrast", range 0,255
Mar  6 03:50:30 pi1 motion: [1] [NTC] [VID] v4l2_scan_controls: #011"Contrast", default 57343, current 32
Mar  6 03:50:31 pi1 motion: [1] [NTC] [VID] v4l2_scan_controls: found control 0x00980902, "Saturation", range 0,255
Mar  6 03:50:31 pi1 motion: [1] [NTC] [VID] v4l2_scan_controls: #011"Saturation", default 57343, current 32
Mar  6 03:50:31 pi1 motion: [1] [NTC] [VID] v4l2_scan_controls: found control 0x00980913, "Gain", range 0,255
Mar  6 03:50:31 pi1 motion: [1] [NTC] [VID] v4l2_scan_controls: #011"Gain", default 57343, current 32
Mar  6 03:50:31 pi1 motion: [1] [NTC] [VID] vid_v4lx_start: Using V4L2
Mar  6 03:50:31 pi1 motion: [1] [NTC] [ALL] image_ring_resize: Resizing pre_capture buffer to 1 items
Mar  6 03:50:31 pi1 motion: [1] [NTC] [STR] http_bindsock: motion-stream testing : IPV4 addr: 127.0.0.1 port: 8081
Mar  6 03:50:31 pi1 motion: [1] [NTC] [STR] http_bindsock: motion-stream Bound : IPV4 addr: 127.0.0.1 port: 8081
Mar  6 03:50:31 pi1 motion: [1] [NTC] [ALL] motion_init: Started motion-stream server in port 8081 auth Enabled
Mar  6 03:53:07 pi1 dhcpcd[372]: eth0: carrier lost
Mar  6 03:53:07 pi1 rsyslogd-2007: action 'action 17' suspended, next retry is Mon Mar  6 03:54:37 2017 [try http://www.rsyslog.com/e/2007 ]
Mar  6 03:53:07 pi1 kernel: [221393.292917] usb 1-1: USB disconnect, device number 2
Mar  6 03:53:07 pi1 kernel: [221393.292956] usb 1-1.1: USB disconnect, device number 3
Mar  6 03:53:07 pi1 kernel: [221393.293778] smsc95xx 1-1.1:1.0 eth0: unregister 'smsc95xx' usb-20980000.usb-1.1, smsc95xx USB 2.0 Ethernet
Mar  6 03:53:07 pi1 kernel: [221393.293875] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
Mar  6 03:53:07 pi1 kernel: [221393.313505] usb 1-1.2: USB disconnect, device number 4
Mar  6 03:53:08 pi1 motion: [1] [ERR] [VID] v4l2_next: VIDIOC_QBUF:

[P33M]

Mar 6 03:53:08 pi1 kernel: [221394.274374] usb 1-1: New USB device found, idVendor=0424, idProduct=9512

This device is not used on Pi 2. The lan9512 is exclusive to the Model B (v1.0 and v2.0). Are you using a Pi with only 2 USB ports?

[imp1sh]

Sorry, mixed them up. This one is correct:
Raspberry Pi Model B (Rev 2.0, 512Mb): 000f

[P33M]

Given that the entire USB device chain is getting disconnected, I suspect power brown-out as a primary cause. Can you replicate this behaviour with the camera plugged into a self-powered hub?

[P33M]

No response in >1 month. Will reopen if OP responds.

[rooterkyberian]

Given that the entire USB device chain is getting disconnected, I suspect power brown-out as a primary cause. Can you replicate this behaviour with the camera plugged into a self-powered hub?

Had the same issue with Logitech C920, powered USB hub fixed it for me.