Public bug reported:
when using firefox Hello videochat application, the webcam crashes.
Step to reproduce:
1. start firefox Hello
2. click on start a conversation
3. the webcam starts and hello displays the video
4. just wait until the webcam disconnects
then the following appear in the syslog :
Jan 15 18:57:26 minipc kernel: [ 2905.741347] usb 2-4: USB disconnect, device
number 7
Jan 15 18:57:26 minipc kernel: [ 2905.742553] uvcvideo: Failed to resubmit
video URB (-19).
Jan 15 18:57:26 minipc kernel: [ 2905.964033] usb 2-4: new high-speed USB
device number 8 using ehci-pci
Jan 15 18:57:27 minipc kernel: [ 2906.334628] usb 2-4: New USB device found,
idVendor=046d, idProduct=081d
Jan 15 18:57:27 minipc kernel: [ 2906.334633] usb 2-4: New USB device strings:
Mfr=0, Product=0, SerialNumber=1
Jan 15 18:57:27 minipc kernel: [ 2906.334636] usb 2-4: SerialNumber: 451406C0
Jan 15 18:57:27 minipc kernel: [ 2906.593255] usb 2-4: set resolution quirk:
cval->res = 384
Jan 15 18:57:27 minipc kernel: [ 2906.593705] uvcvideo: Found UVC 1.00 device
<unnamed> (046d:081d)
Jan 15 18:57:27 minipc kernel: [ 2906.606593] input: UVC Camera (046d:081d) as
/devices/pci0000:00/0000:00:1d.7/usb2/2-4/2-4:1.2/input/input17
Jan 15 18:57:27 minipc mtp-probe: checking bus 2, device 8:
"/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-4"
Jan 15 18:57:27 minipc mtp-probe: bus: 2, device: 8 was not an MTP device
Jan 15 18:57:27 minipc rtkit-daemon[3179]: Successfully made thread 5057 of
process 3177 (n/a) owned by '1000' RT at priority 5.
Jan 15 18:57:27 minipc rtkit-daemon[3179]: Supervising 4 threads of 1 processes
of 1 users.
Jan 15 18:58:07 minipc kernel: [ 2946.177078] ------------[ cut here
]------------
Jan 15 18:58:07 minipc kernel: [ 2946.177094] WARNING: CPU: 1 PID: 4716 at
/build/buildd/linux-3.16.0/fs/sysfs/group.c:219 sysfs_remove_group+0x99/0xa0()
Jan 15 18:58:07 minipc kernel: [ 2946.177096] sysfs group ffffffff81cbe920 not
found for kobject 'event10'
Jan 15 18:58:07 minipc kernel: [ 2946.177098] Modules linked in: uvcvideo
videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media
snd_usb_audio snd_usbmidi_lib xt_CHECKSUM iptable_mangle ipt_MASQUERADE
iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack
nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp
llc nfsv3 ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi bnep rfcomm bluetooth 6lowpan_iphc
rpcsec_gss_krb5 dm_crypt nfsv4 binfmt_misc nfsd auth_rpcgss nfs_acl nfs lockd
sunrpc fscache ir_lirc_codec ir_mce_kbd_decoder lirc_dev ir_sharp_decoder
ir_sanyo_decoder ir_sony_decoder ir_jvc_decoder ir_rc6_decoder ir_nec_decoder
ir_rc5_decoder rc_rc6_mce pl2303 usbserial mceusb rc_core joydev coretemp
kvm_intel snd_hda_codec_realtek kvm snd_hda_codec_generic snd_hda_intel
snd_hda_controller serio_raw snd_hda_codec snd_hwdep snd_pcm snd_seq_midi
snd_seq_midi_e
vent snd_rawmidi snd_seq snd_seq_device snd_timer snd lpc_ich soundcore
mac_hid parport_pc ppdev lp parport hid_generic usbhid hid i915 video
i2c_algo_bit drm_kms_helper psmouse drm e1000e firewire_ohci firewire_core ptp
crc_itu_t pata_acpi pps_core
Jan 15 18:58:07 minipc kernel: [ 2946.177199] CPU: 1 PID: 4716 Comm:
MediaManager Tainted: G W 3.16.0-29-lowlatency #39-Ubuntu
Jan 15 18:58:07 minipc kernel: [ 2946.177201] Hardware name: AOpen
i965GMx-IF/i965GMx-IF, BIOS 6.00 PG 10/03/2008
Jan 15 18:58:07 minipc kernel: [ 2946.177203] 0000000000000009
ffff8800747d7c10 ffffffff8178100b ffff8800747d7c58
Jan 15 18:58:07 minipc kernel: [ 2946.177207] ffff8800747d7c48
ffffffff8107199d 0000000000000000 ffffffff81cbe920
Jan 15 18:58:07 minipc kernel: [ 2946.177210] ffff88011e047cc0
ffff880123c55898 ffff88012953a520 ffff8800747d7ca8
Jan 15 18:58:07 minipc kernel: [ 2946.177213] Call Trace:
Jan 15 18:58:07 minipc kernel: [ 2946.177221] [<ffffffff8178100b>]
dump_stack+0x4d/0x6f
Jan 15 18:58:07 minipc kernel: [ 2946.177226] [<ffffffff8107199d>]
warn_slowpath_common+0x7d/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.177229] [<ffffffff81071a0c>]
warn_slowpath_fmt+0x4c/0x50
Jan 15 18:58:07 minipc kernel: [ 2946.177233] [<ffffffff81258ed8>] ?
kernfs_find_and_get_ns+0x48/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.177236] [<ffffffff8125c949>]
sysfs_remove_group+0x99/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.177240] [<ffffffff814da277>]
dpm_sysfs_remove+0x57/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.177245] [<ffffffff814cf4b5>]
device_del+0x45/0x1d0
Jan 15 18:58:07 minipc kernel: [ 2946.177248] [<ffffffff815d28a3>]
evdev_disconnect+0x23/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.177252] [<ffffffff815cf01f>]
__input_unregister_device+0xaf/0x160
Jan 15 18:58:07 minipc kernel: [ 2946.177255] [<ffffffff815cf18d>]
input_unregister_device+0x4d/0x80
Jan 15 18:58:07 minipc kernel: [ 2946.177262] [<ffffffffc0b95172>]
uvc_status_cleanup+0x42/0x50 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.177266] [<ffffffffc0b8a1fd>]
uvc_delete+0x2d/0x180 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.177269] [<ffffffffc0b8a439>]
uvc_release+0x29/0x30 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.177279] [<ffffffffc0b4a9f9>]
v4l2_device_release+0xd9/0x110 [videodev]
Jan 15 18:58:07 minipc kernel: [ 2946.177283] [<ffffffff814ced02>]
device_release+0x32/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.177287] [<ffffffff813a136a>]
kobject_release+0x7a/0x1c0
Jan 15 18:58:07 minipc kernel: [ 2946.177290] [<ffffffff813a120d>]
kobject_put+0x2d/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.177293] [<ffffffff814cf017>]
put_device+0x17/0x20
Jan 15 18:58:07 minipc kernel: [ 2946.177298] [<ffffffffc0b49491>]
v4l2_release+0x51/0x80 [videodev]
Jan 15 18:58:07 minipc kernel: [ 2946.177301] [<ffffffff811e4593>]
__fput+0xd3/0x230
Jan 15 18:58:07 minipc kernel: [ 2946.177304] [<ffffffff811e473e>]
____fput+0xe/0x10
Jan 15 18:58:07 minipc kernel: [ 2946.177308] [<ffffffff810926d7>]
task_work_run+0xb7/0xf0
Jan 15 18:58:07 minipc kernel: [ 2946.177313] [<ffffffff81015267>]
do_notify_resume+0x97/0xb0
Jan 15 18:58:07 minipc kernel: [ 2946.177318] [<ffffffff81788cea>]
int_signal+0x12/0x17
Jan 15 18:58:07 minipc kernel: [ 2946.177320] ---[ end trace 167074d7c3fac550
]---
Jan 15 18:58:07 minipc kernel: [ 2946.184034] ------------[ cut here
]------------
Jan 15 18:58:07 minipc kernel: [ 2946.184045] WARNING: CPU: 1 PID: 4716 at
/build/buildd/linux-3.16.0/fs/sysfs/group.c:219 sysfs_remove_group+0x99/0xa0()
Jan 15 18:58:07 minipc kernel: [ 2946.184047] sysfs group ffffffff81cbe920 not
found for kobject 'input16'
Jan 15 18:58:07 minipc kernel: [ 2946.184049] Modules linked in: uvcvideo
videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media
snd_usb_audio snd_usbmidi_lib xt_CHECKSUM iptable_mangle ipt_MASQUERADE
iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack
nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp
llc nfsv3 ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi bnep rfcomm bluetooth 6lowpan_iphc
rpcsec_gss_krb5 dm_crypt nfsv4 binfmt_misc nfsd auth_rpcgss nfs_acl nfs lockd
sunrpc fscache ir_lirc_codec ir_mce_kbd_decoder lirc_dev ir_sharp_decoder
ir_sanyo_decoder ir_sony_decoder ir_jvc_decoder ir_rc6_decoder ir_nec_decoder
ir_rc5_decoder rc_rc6_mce pl2303 usbserial mceusb rc_core joydev coretemp
kvm_intel snd_hda_codec_realtek kvm snd_hda_codec_generic snd_hda_intel
snd_hda_controller serio_raw snd_hda_codec snd_hwdep snd_pcm snd_seq_midi
snd_seq_midi_e
vent snd_rawmidi snd_seq snd_seq_device snd_timer snd lpc_ich soundcore
mac_hid parport_pc ppdev lp parport hid_generic usbhid hid i915 video
i2c_algo_bit drm_kms_helper psmouse drm e1000e firewire_ohci firewire_core ptp
crc_itu_t pata_acpi pps_core
Jan 15 18:58:07 minipc kernel: [ 2946.184137] CPU: 1 PID: 4716 Comm:
MediaManager Tainted: G W 3.16.0-29-lowlatency #39-Ubuntu
Jan 15 18:58:07 minipc kernel: [ 2946.184139] Hardware name: AOpen
i965GMx-IF/i965GMx-IF, BIOS 6.00 PG 10/03/2008
Jan 15 18:58:07 minipc kernel: [ 2946.184141] 0000000000000009
ffff8800747d7c38 ffffffff8178100b ffff8800747d7c80
Jan 15 18:58:07 minipc kernel: [ 2946.184144] ffff8800747d7c70
ffffffff8107199d 0000000000000000 ffffffff81cbe920
Jan 15 18:58:07 minipc kernel: [ 2946.184147] ffff880123c53a58
ffff880123c55898 ffff88012953a520 ffff8800747d7cd0
Jan 15 18:58:07 minipc kernel: [ 2946.184151] Call Trace:
Jan 15 18:58:07 minipc kernel: [ 2946.184157] [<ffffffff8178100b>]
dump_stack+0x4d/0x6f
Jan 15 18:58:07 minipc kernel: [ 2946.184161] [<ffffffff8107199d>]
warn_slowpath_common+0x7d/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.184164] [<ffffffff81071a0c>]
warn_slowpath_fmt+0x4c/0x50
Jan 15 18:58:07 minipc kernel: [ 2946.184167] [<ffffffff81258ed8>] ?
kernfs_find_and_get_ns+0x48/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.184170] [<ffffffff8125c949>]
sysfs_remove_group+0x99/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.184175] [<ffffffff814da277>]
dpm_sysfs_remove+0x57/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.184178] [<ffffffff814cf4b5>]
device_del+0x45/0x1d0
Jan 15 18:58:07 minipc kernel: [ 2946.184183] [<ffffffff815cf0ac>]
__input_unregister_device+0x13c/0x160
Jan 15 18:58:07 minipc kernel: [ 2946.184186] [<ffffffff815cf18d>]
input_unregister_device+0x4d/0x80
Jan 15 18:58:07 minipc kernel: [ 2946.184192] [<ffffffffc0b95172>]
uvc_status_cleanup+0x42/0x50 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.184195] [<ffffffffc0b8a1fd>]
uvc_delete+0x2d/0x180 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.184199] [<ffffffffc0b8a439>]
uvc_release+0x29/0x30 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.184208] [<ffffffffc0b4a9f9>]
v4l2_device_release+0xd9/0x110 [videodev]
Jan 15 18:58:07 minipc kernel: [ 2946.184211] [<ffffffff814ced02>]
device_release+0x32/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.184215] [<ffffffff813a136a>]
kobject_release+0x7a/0x1c0
Jan 15 18:58:07 minipc kernel: [ 2946.184218] [<ffffffff813a120d>]
kobject_put+0x2d/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.184221] [<ffffffff814cf017>]
put_device+0x17/0x20
Jan 15 18:58:07 minipc kernel: [ 2946.184225] [<ffffffffc0b49491>]
v4l2_release+0x51/0x80 [videodev]
Jan 15 18:58:07 minipc kernel: [ 2946.184229] [<ffffffff811e4593>]
__fput+0xd3/0x230
Jan 15 18:58:07 minipc kernel: [ 2946.184232] [<ffffffff811e473e>]
____fput+0xe/0x10
Jan 15 18:58:07 minipc kernel: [ 2946.184235] [<ffffffff810926d7>]
task_work_run+0xb7/0xf0
Jan 15 18:58:07 minipc kernel: [ 2946.184239] [<ffffffff81015267>]
do_notify_resume+0x97/0xb0
Jan 15 18:58:07 minipc kernel: [ 2946.184243] [<ffffffff81788cea>]
int_signal+0x12/0x17
Jan 15 18:58:07 minipc kernel: [ 2946.184245] ---[ end trace 167074d7c3fac551
]---
Jan 15 18:58:07 minipc kernel: [ 2946.184256] ------------[ cut here
]------------
Jan 15 18:58:07 minipc kernel: [ 2946.184260] WARNING: CPU: 1 PID: 4716 at
/build/buildd/linux-3.16.0/fs/sysfs/group.c:219 sysfs_remove_group+0x99/0xa0()
Jan 15 18:58:07 minipc kernel: [ 2946.184261] sysfs group ffffffff81cd6dc0 not
found for kobject 'input16'
Jan 15 18:58:07 minipc kernel: [ 2946.184263] Modules linked in: uvcvideo
videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media
snd_usb_audio snd_usbmidi_lib xt_CHECKSUM iptable_mangle ipt_MASQUERADE
iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack
nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp
llc nfsv3 ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi bnep rfcomm bluetooth 6lowpan_iphc
rpcsec_gss_krb5 dm_crypt nfsv4 binfmt_misc nfsd auth_rpcgss nfs_acl nfs lockd
sunrpc fscache ir_lirc_codec ir_mce_kbd_decoder lirc_dev ir_sharp_decoder
ir_sanyo_decoder ir_sony_decoder ir_jvc_decoder ir_rc6_decoder ir_nec_decoder
ir_rc5_decoder rc_rc6_mce pl2303 usbserial mceusb rc_core joydev coretemp
kvm_intel snd_hda_codec_realtek kvm snd_hda_codec_generic snd_hda_intel
snd_hda_controller serio_raw snd_hda_codec snd_hwdep snd_pcm snd_seq_midi
snd_seq_midi_e
vent snd_rawmidi snd_seq snd_seq_device snd_timer snd lpc_ich soundcore
mac_hid parport_pc ppdev lp parport hid_generic usbhid hid i915 video
i2c_algo_bit drm_kms_helper psmouse drm e1000e firewire_ohci firewire_core ptp
crc_itu_t pata_acpi pps_core
Jan 15 18:58:07 minipc kernel: [ 2946.184330] CPU: 1 PID: 4716 Comm:
MediaManager Tainted: G W 3.16.0-29-lowlatency #39-Ubuntu
Jan 15 18:58:07 minipc kernel: [ 2946.184332] Hardware name: AOpen
i965GMx-IF/i965GMx-IF, BIOS 6.00 PG 10/03/2008
Jan 15 18:58:07 minipc kernel: [ 2946.184333] 0000000000000009
ffff8800747d7c00 ffffffff8178100b ffff8800747d7c48
Jan 15 18:58:07 minipc kernel: [ 2946.184336] ffff8800747d7c38
ffffffff8107199d 0000000000000000 ffffffff81cd6dc0
Jan 15 18:58:07 minipc kernel: [ 2946.184339] ffff880123c53a58
ffffffff81cd6bc0 ffff88012953a520 ffff8800747d7c98
Jan 15 18:58:07 minipc kernel: [ 2946.184342] Call Trace:
Jan 15 18:58:07 minipc kernel: [ 2946.184345] [<ffffffff8178100b>]
dump_stack+0x4d/0x6f
Jan 15 18:58:07 minipc kernel: [ 2946.184349] [<ffffffff8107199d>]
warn_slowpath_common+0x7d/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.184351] [<ffffffff81071a0c>]
warn_slowpath_fmt+0x4c/0x50
Jan 15 18:58:07 minipc kernel: [ 2946.184354] [<ffffffff81258ed8>] ?
kernfs_find_and_get_ns+0x48/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.184357] [<ffffffff8125c949>]
sysfs_remove_group+0x99/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.184360] [<ffffffff8125ca23>]
sysfs_remove_groups+0x33/0x50
Jan 15 18:58:07 minipc kernel: [ 2946.184363] [<ffffffff814cec3e>]
device_remove_attrs+0x5e/0x80
Jan 15 18:58:07 minipc kernel: [ 2946.184366] [<ffffffff814cf591>]
device_del+0x121/0x1d0
Jan 15 18:58:07 minipc kernel: [ 2946.184369] [<ffffffff815cf0ac>]
__input_unregister_device+0x13c/0x160
Jan 15 18:58:07 minipc kernel: [ 2946.184372] [<ffffffff815cf18d>]
input_unregister_device+0x4d/0x80
Jan 15 18:58:07 minipc kernel: [ 2946.184376] [<ffffffffc0b95172>]
uvc_status_cleanup+0x42/0x50 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.184380] [<ffffffffc0b8a1fd>]
uvc_delete+0x2d/0x180 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.184383] [<ffffffffc0b8a439>]
uvc_release+0x29/0x30 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.184388] [<ffffffffc0b4a9f9>]
v4l2_device_release+0xd9/0x110 [videodev]
Jan 15 18:58:07 minipc kernel: [ 2946.184391] [<ffffffff814ced02>]
device_release+0x32/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.184394] [<ffffffff813a136a>]
kobject_release+0x7a/0x1c0
Jan 15 18:58:07 minipc kernel: [ 2946.184397] [<ffffffff813a120d>]
kobject_put+0x2d/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.184400] [<ffffffff814cf017>]
put_device+0x17/0x20
Jan 15 18:58:07 minipc kernel: [ 2946.184404] [<ffffffffc0b49491>]
v4l2_release+0x51/0x80 [videodev]
Jan 15 18:58:07 minipc kernel: [ 2946.184407] [<ffffffff811e4593>]
__fput+0xd3/0x230
Jan 15 18:58:07 minipc kernel: [ 2946.184410] [<ffffffff811e473e>]
____fput+0xe/0x10
Jan 15 18:58:07 minipc kernel: [ 2946.184413] [<ffffffff810926d7>]
task_work_run+0xb7/0xf0
Jan 15 18:58:07 minipc kernel: [ 2946.184416] [<ffffffff81015267>]
do_notify_resume+0x97/0xb0
Jan 15 18:58:07 minipc kernel: [ 2946.184419] [<ffffffff81788cea>]
int_signal+0x12/0x17
Jan 15 18:58:07 minipc kernel: [ 2946.184421] ---[ end trace 167074d7c3fac552
]---
Jan 15 18:58:07 minipc kernel: [ 2946.184422] ------------[ cut here
]------------
Jan 15 18:58:07 minipc kernel: [ 2946.184425] WARNING: CPU: 1 PID: 4716 at
/build/buildd/linux-3.16.0/fs/sysfs/group.c:219 sysfs_remove_group+0x99/0xa0()
Jan 15 18:58:07 minipc kernel: [ 2946.184427] sysfs group ffffffff81cd6c20 not
found for kobject 'input16'
Jan 15 18:58:07 minipc kernel: [ 2946.184428] Modules linked in: uvcvideo
videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media
snd_usb_audio snd_usbmidi_lib xt_CHECKSUM iptable_mangle ipt_MASQUERADE
iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack
nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp
llc nfsv3 ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi bnep rfcomm bluetooth 6lowpan_iphc
rpcsec_gss_krb5 dm_crypt nfsv4 binfmt_misc nfsd auth_rpcgss nfs_acl nfs lockd
sunrpc fscache ir_lirc_codec ir_mce_kbd_decoder lirc_dev ir_sharp_decoder
ir_sanyo_decoder ir_sony_decoder ir_jvc_decoder ir_rc6_decoder ir_nec_decoder
ir_rc5_decoder rc_rc6_mce pl2303 usbserial mceusb rc_core joydev coretemp
kvm_intel snd_hda_codec_realtek kvm snd_hda_codec_generic snd_hda_intel
snd_hda_controller serio_raw snd_hda_codec snd_hwdep snd_pcm snd_seq_midi
snd_seq_midi_e
vent snd_rawmidi snd_seq snd_seq_device snd_timer snd lpc_ich soundcore
mac_hid parport_pc ppdev lp parport hid_generic usbhid hid i915 video
i2c_algo_bit drm_kms_helper psmouse drm e1000e firewire_ohci firewire_core ptp
crc_itu_t pata_acpi pps_core
Jan 15 18:58:07 minipc kernel: [ 2946.184496] CPU: 1 PID: 4716 Comm:
MediaManager Tainted: G W 3.16.0-29-lowlatency #39-Ubuntu
Jan 15 18:58:07 minipc kernel: [ 2946.184497] Hardware name: AOpen
i965GMx-IF/i965GMx-IF, BIOS 6.00 PG 10/03/2008
Jan 15 18:58:07 minipc kernel: [ 2946.184499] 0000000000000009
ffff8800747d7c00 ffffffff8178100b ffff8800747d7c48
Jan 15 18:58:07 minipc kernel: [ 2946.184502] ffff8800747d7c38
ffffffff8107199d 0000000000000000 ffffffff81cd6c20
Jan 15 18:58:07 minipc kernel: [ 2946.184505] ffff880123c53a58
ffffffff81cd6bc0 ffff88012953a520 ffff8800747d7c98
Jan 15 18:58:07 minipc kernel: [ 2946.184508] Call Trace:
Jan 15 18:58:07 minipc kernel: [ 2946.184511] [<ffffffff8178100b>]
dump_stack+0x4d/0x6f
Jan 15 18:58:07 minipc kernel: [ 2946.184514] [<ffffffff8107199d>]
warn_slowpath_common+0x7d/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.184517] [<ffffffff81071a0c>]
warn_slowpath_fmt+0x4c/0x50
Jan 15 18:58:07 minipc kernel: [ 2946.184520] [<ffffffff81258ed8>] ?
kernfs_find_and_get_ns+0x48/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.184522] [<ffffffff8125c949>]
sysfs_remove_group+0x99/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.184525] [<ffffffff8125ca23>]
sysfs_remove_groups+0x33/0x50
Jan 15 18:58:07 minipc kernel: [ 2946.184528] [<ffffffff814cec3e>]
device_remove_attrs+0x5e/0x80
Jan 15 18:58:07 minipc kernel: [ 2946.184531] [<ffffffff814cf591>]
device_del+0x121/0x1d0
Jan 15 18:58:07 minipc kernel: [ 2946.184534] [<ffffffff815cf0ac>]
__input_unregister_device+0x13c/0x160
Jan 15 18:58:07 minipc kernel: [ 2946.184537] [<ffffffff815cf18d>]
input_unregister_device+0x4d/0x80
Jan 15 18:58:07 minipc kernel: [ 2946.184541] [<ffffffffc0b95172>]
uvc_status_cleanup+0x42/0x50 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.184545] [<ffffffffc0b8a1fd>]
uvc_delete+0x2d/0x180 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.184548] [<ffffffffc0b8a439>]
uvc_release+0x29/0x30 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.184553] [<ffffffffc0b4a9f9>]
v4l2_device_release+0xd9/0x110 [videodev]
Jan 15 18:58:07 minipc kernel: [ 2946.184556] [<ffffffff814ced02>]
device_release+0x32/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.184559] [<ffffffff813a136a>]
kobject_release+0x7a/0x1c0
Jan 15 18:58:07 minipc kernel: [ 2946.184562] [<ffffffff813a120d>]
kobject_put+0x2d/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.184565] [<ffffffff814cf017>]
put_device+0x17/0x20
Jan 15 18:58:07 minipc kernel: [ 2946.184570] [<ffffffffc0b49491>]
v4l2_release+0x51/0x80 [videodev]
Jan 15 18:58:07 minipc kernel: [ 2946.184572] [<ffffffff811e4593>]
__fput+0xd3/0x230
Jan 15 18:58:07 minipc kernel: [ 2946.184575] [<ffffffff811e473e>]
____fput+0xe/0x10
Jan 15 18:58:07 minipc kernel: [ 2946.184578] [<ffffffff810926d7>]
task_work_run+0xb7/0xf0
Jan 15 18:58:07 minipc kernel: [ 2946.184581] [<ffffffff81015267>]
do_notify_resume+0x97/0xb0
Jan 15 18:58:07 minipc kernel: [ 2946.184584] [<ffffffff81788cea>]
int_signal+0x12/0x17
Jan 15 18:58:07 minipc kernel: [ 2946.184586] ---[ end trace 167074d7c3fac553
]---
Jan 15 18:58:07 minipc kernel: [ 2946.184691] ------------[ cut here
]------------
Jan 15 18:58:07 minipc kernel: [ 2946.184696] WARNING: CPU: 1 PID: 4716 at
/build/buildd/linux-3.16.0/fs/sysfs/group.c:219 sysfs_remove_group+0x99/0xa0()
Jan 15 18:58:07 minipc kernel: [ 2946.184697] sysfs group ffffffff81cbe920 not
found for kobject 'media0'
Jan 15 18:58:07 minipc kernel: [ 2946.184699] Modules linked in: uvcvideo
videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media
snd_usb_audio snd_usbmidi_lib xt_CHECKSUM iptable_mangle ipt_MASQUERADE
iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack
nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp
llc nfsv3 ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp
libiscsi_tcp libiscsi scsi_transport_iscsi bnep rfcomm bluetooth 6lowpan_iphc
rpcsec_gss_krb5 dm_crypt nfsv4 binfmt_misc nfsd auth_rpcgss nfs_acl nfs lockd
sunrpc fscache ir_lirc_codec ir_mce_kbd_decoder lirc_dev ir_sharp_decoder
ir_sanyo_decoder ir_sony_decoder ir_jvc_decoder ir_rc6_decoder ir_nec_decoder
ir_rc5_decoder rc_rc6_mce pl2303 usbserial mceusb rc_core joydev coretemp
kvm_intel snd_hda_codec_realtek kvm snd_hda_codec_generic snd_hda_intel
snd_hda_controller serio_raw snd_hda_codec snd_hwdep snd_pcm snd_seq_midi
snd_seq_midi_e
vent snd_rawmidi snd_seq snd_seq_device snd_timer snd lpc_ich soundcore
mac_hid parport_pc ppdev lp parport hid_generic usbhid hid i915 video
i2c_algo_bit drm_kms_helper psmouse drm e1000e firewire_ohci firewire_core ptp
crc_itu_t pata_acpi pps_core
Jan 15 18:58:07 minipc kernel: [ 2946.184768] CPU: 1 PID: 4716 Comm:
MediaManager Tainted: G W 3.16.0-29-lowlatency #39-Ubuntu
Jan 15 18:58:07 minipc kernel: [ 2946.184769] Hardware name: AOpen
i965GMx-IF/i965GMx-IF, BIOS 6.00 PG 10/03/2008
Jan 15 18:58:07 minipc kernel: [ 2946.184771] 0000000000000009
ffff8800747d7c38 ffffffff8178100b ffff8800747d7c80
Jan 15 18:58:07 minipc kernel: [ 2946.184774] ffff8800747d7c70
ffffffff8107199d 0000000000000000 ffffffff81cbe920
Jan 15 18:58:07 minipc kernel: [ 2946.184777] ffff880123c51898
ffff880123c55898 ffff88012953a520 ffff8800747d7cd0
Jan 15 18:58:07 minipc kernel: [ 2946.184780] Call Trace:
Jan 15 18:58:07 minipc kernel: [ 2946.184783] [<ffffffff8178100b>]
dump_stack+0x4d/0x6f
Jan 15 18:58:07 minipc kernel: [ 2946.184787] [<ffffffff8107199d>]
warn_slowpath_common+0x7d/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.184789] [<ffffffff81071a0c>]
warn_slowpath_fmt+0x4c/0x50
Jan 15 18:58:07 minipc kernel: [ 2946.184792] [<ffffffff81258ed8>] ?
kernfs_find_and_get_ns+0x48/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.184795] [<ffffffff8125c949>]
sysfs_remove_group+0x99/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.184798] [<ffffffff814da277>]
dpm_sysfs_remove+0x57/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.184801] [<ffffffff814cf4b5>]
device_del+0x45/0x1d0
Jan 15 18:58:07 minipc kernel: [ 2946.184804] [<ffffffff814cf65e>]
device_unregister+0x1e/0x70
Jan 15 18:58:07 minipc kernel: [ 2946.184809] [<ffffffffc0b3df89>]
media_devnode_unregister+0x49/0x50 [media]
Jan 15 18:58:07 minipc kernel: [ 2946.184813] [<ffffffffc0b3daec>]
media_device_unregister+0x5c/0x70 [media]
Jan 15 18:58:07 minipc kernel: [ 2946.184816] [<ffffffffc0b8a342>]
uvc_delete+0x172/0x180 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.184820] [<ffffffffc0b8a439>]
uvc_release+0x29/0x30 [uvcvideo]
Jan 15 18:58:07 minipc kernel: [ 2946.184825] [<ffffffffc0b4a9f9>]
v4l2_device_release+0xd9/0x110 [videodev]
Jan 15 18:58:07 minipc kernel: [ 2946.184828] [<ffffffff814ced02>]
device_release+0x32/0xa0
Jan 15 18:58:07 minipc kernel: [ 2946.184831] [<ffffffff813a136a>]
kobject_release+0x7a/0x1c0
Jan 15 18:58:07 minipc kernel: [ 2946.184834] [<ffffffff813a120d>]
kobject_put+0x2d/0x60
Jan 15 18:58:07 minipc kernel: [ 2946.184837] [<ffffffff814cf017>]
put_device+0x17/0x20
Jan 15 18:58:07 minipc kernel: [ 2946.184841] [<ffffffffc0b49491>]
v4l2_release+0x51/0x80 [videodev]
Jan 15 18:58:07 minipc kernel: [ 2946.184844] [<ffffffff811e4593>]
__fput+0xd3/0x230
Jan 15 18:58:07 minipc kernel: [ 2946.184847] [<ffffffff811e473e>]
____fput+0xe/0x10
Jan 15 18:58:07 minipc kernel: [ 2946.184849] [<ffffffff810926d7>]
task_work_run+0xb7/0xf0
Jan 15 18:58:07 minipc kernel: [ 2946.184853] [<ffffffff81015267>]
do_notify_resume+0x97/0xb0
Jan 15 18:58:07 minipc kernel: [ 2946.184856] [<ffffffff81788cea>]
int_signal+0x12/0x17
Jan 15 18:58:07 minipc kernel: [ 2946.184858] ---[ end trace 167074d7c3fac554
]---
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-image-lowlatency 3.16.0.29.30
ProcVersionSignature: Ubuntu 3.16.0-29.39-lowlatency 3.16.7-ckt2
Uname: Linux 3.16.0-29-lowlatency x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: pascal 3177 F.... pulseaudio
/dev/snd/pcmC0D0p: pascal 3177 F...m pulseaudio
/dev/snd/controlC0: pascal 3177 F.... pulseaudio
CurrentDesktop: KDE
Date: Thu Jan 15 18:59:43 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-01-03 (12 days ago)
InstallationMedia: Kubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
IwConfig:
eth0 no wireless extensions.
virbr0 no wireless extensions.
lo no wireless extensions.
MachineType: AOpen i965GMx-IF
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-29-lowlatency
root=UUID=076b58d2-a51a-4802-a928-ddafdecc1b83 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.16.0-29-lowlatency N/A
linux-backports-modules-3.16.0-29-lowlatency N/A
linux-firmware 1.138.1
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/03/2008
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: i965GMx-IF
dmi.board.vendor: AOpen
dmi.board.version: 558EX10I690
dmi.chassis.type: 3
dmi.chassis.vendor: AOpen
dmi.chassis.version: i965GMx-IF
dmi.modalias:
dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd10/03/2008:svnAOpen:pni965GMx-IF:pvrAO00001JW:rvnAOpen:rni965GMx-IF:rvr558EX10I690:cvnAOpen:ct3:cvri965GMx-IF:
dmi.product.name: i965GMx-IF
dmi.product.version: AO00001JW
dmi.sys.vendor: AOpen
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug utopic
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https://bugs.launchpad.net/bugs/1411357
Title:
crash in uvc_status_cleanup
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