Created attachment 968801 [details]
File: dmesg

Yep, I hit this - happened when I unplugged a USB webcam while cheese was running.

Also happened to me when unplugged USB webcam while cheese was running. Is this supposed to happen?

*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There are a large number of bugs to go through and several of them have gone stale.  Due to this, we are doing a mass bug update across all of the Fedora 21 kernel bugs.

Fedora 21 has now been rebased to 3.18.3-201.fc21.  Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.

If you experience different issues, please open a new bug report for those.

Still around for me with kernel-3.18.3-201.fc21.x86_64

Still happens with 3.18.4.200.fc21.x86_64 too.
Happens if I pull the cam I use to monitor with mpv @ av://v4l2:/dev/video0, happens when using cheese too.

Yes, pulling the camera while it is in use causes it.

Description of problem:
I just connected a USB stick, it didn't show up on Thunar and disconnected it.

Version-Release number of selected component:
kernel

Additional info:
reporter:       libreport-2.3.0
cmdline:        BOOT_IMAGE=/vmlinuz-3.19.3-200.fc21.x86_64 root=UUID=51ac69fe-ea5a-4c7c-8029-3caee97bd81c ro rhgb quiet LANG=es_MX.UTF-8
kernel:         3.19.3-200.fc21.x86_64
runlevel:       N 5
type:           Kerneloops

Truncated backtrace:
WARNING: CPU: 1 PID: 3499 at fs/sysfs/group.c:219 sysfs_remove_group+0xa1/0xb0()
sysfs group ffffffff81ccf1e0 not found for kobject 'sdb1'
Modules linked in: uas usb_storage ccm ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw bnep arc4 ath9k snd_hda_codec_hdmi ath9k_common snd_hda_codec_realtek snd_hda_codec_generic ath9k_hw intel_rapl snd_hda_intel intel_soc_dts_thermal snd_hda_controller ath coretemp kvm_intel mac80211 snd_hda_codec joydev kvm snd_hwdep snd_seq acer_wmi iTCO_wdt iTCO_vendor_support hid_multitouch snd_seq_device sparse_keymap snd_pcm crct10dif_pclmul uvcvideo crc32_pclmul ath3k btusb
 crc32c_intel cfg80211 bluetooth videobuf2_vmalloc ghash_clmulni_intel videobuf2_core vfat fat videobuf2_memops v4l2_common videodev serio_raw media snd_timer shpchp rfkill i2c_i801 mmc_block snd lpc_ich mfd_core soundcore mei_txe mei dw_dmac i2c_hid wmi dw_dmac_core int3400_thermal processor_thermal_device int3403_thermal acpi_thermal_rel i2c_designware_platform i2c_designware_core iosf_mbi nfsd auth_rpcgss nfs_acl lockd grace binfmt_misc sunrpc i915 r8169 i2c_algo_bit drm_kms_helper drm mii video sdhci_acpi sdhci mmc_core
CPU: 1 PID: 3499 Comm: systemd-udevd Not tainted 3.19.3-200.fc21.x86_64 #1
Hardware name: Acer Aspire E3-112M/R2, BIOS V1.03 07/22/2014
 0000000000000000 000000009045e669 ffff880064317928 ffffffff8176e215
 0000000000000000 ffff880064317980 ffff880064317968 ffffffff8109bc1a
 ffff880064317968 0000000000000000 ffffffff81ccf1e0 ffff8801713b5438
Call Trace:
 [<ffffffff8176e215>] dump_stack+0x45/0x57
 [<ffffffff8109bc1a>] warn_slowpath_common+0x8a/0xc0
 [<ffffffff8109bca5>] warn_slowpath_fmt+0x55/0x70
 [<ffffffff81295b0c>] ? kernfs_find_and_get_ns+0x4c/0x60
 [<ffffffff812991b1>] sysfs_remove_group+0xa1/0xb0
 [<ffffffff814d1a27>] dpm_sysfs_remove+0x57/0x60
 [<ffffffff814c5148>] device_del+0x58/0x270
 [<ffffffff8137a27c>] delete_partition+0x4c/0x80
 [<ffffffff8137a2f6>] drop_partitions.isra.12.part.13+0x46/0x80
 [<ffffffff8137a838>] rescan_partitions+0x68/0x2d0
 [<ffffffff81772906>] ? mutex_lock+0x16/0x40
 [<ffffffff81254547>] __blkdev_get+0x367/0x4d0
 [<ffffffff81254706>] blkdev_get+0x56/0x370
 [<ffffffff81254a80>] ? blkdev_get_by_dev+0x60/0x60
 [<ffffffff81254adf>] blkdev_open+0x5f/0x90
 [<ffffffff81216c62>] do_dentry_open+0x1d2/0x320
 [<ffffffff81216f19>] vfs_open+0x49/0x50
 [<ffffffff81227087>] do_last+0x247/0x1210
 [<ffffffff81229e37>] path_openat+0x97/0x660
 [<ffffffff81260510>] ? ep_read_events_proc+0xd0/0xd0
 [<ffffffff8122bbc9>] do_filp_open+0x49/0xd0
 [<ffffffff81238a5e>] ? __alloc_fd+0x7e/0x120
 [<ffffffff812188fb>] do_sys_open+0x13b/0x250
 [<ffffffff81218a2e>] SyS_open+0x1e/0x20
 [<ffffffff81774a09>] system_call_fastpath+0x12/0x17

*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There is a large number of bugs to go through and several of them have gone stale.  Due to this, we are doing a mass bug update across all of the Fedora 21 kernel bugs.

Fedora 21 has now been rebased to 3.19.5-200.fc21.  Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.

If you have moved on to Fedora 22, and are still experiencing this issue, please change the version to Fedora 22.

If you experience different issues, please open a new bug report for those.

Bug still present, 4.0.8-200.fc21.x86_64

This message is a reminder that Fedora 21 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 21. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '21'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora 21 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

Fedora 21 changed to end-of-life (EOL) status on 2015-12-01. Fedora 21 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

Thank you for reporting this bug and we are sorry it could not be fixed.

still present in 4.2.6-301.fc23; on unplugging a cheap webcam;  (is this  related to the fixed bug 1030988? or si it a completely different path?)

(I'll attach my dmesg in a sec)

Created attachment 1101538 [details]
dmesg from unplugging my cheap webcam

*********** MASS BUG UPDATE **************
 
We apologize for the inconvenience.  There is a large number of bugs to go through and several of them have gone stale.  Due to this, we are doing a mass bug update across all of the Fedora 23 kernel bugs.
 
Fedora 23 has now been rebased to 4.7.4-100.fc23.  Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.
 
If you have moved on to Fedora 24 or 25, and are still experiencing this issue, please change the version to Fedora 24 or 25.
 
If you experience different issues, please open a new bug report for those.

Still present in 4.8.0-0.rc7.git0.1.fc25 ; plugin camera, start cheese, pull out camera.

[27322.746272] usb 1-1.4: USB disconnect, device number 6
[27322.775613] ------------[ cut here ]------------
[27322.775625] WARNING: CPU: 6 PID: 10822 at fs/sysfs/group.c:237 sysfs_remove_group+0x8b/0x90
[27322.775629] sysfs group ffffffffbded4400 not found for kobject 'event11'
[27322.775631] Modules linked in: uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev media dm_crypt xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun fuse ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_raw ip6table_mangle ip6table_security ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 iptable_raw iptable_mangle iptable_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ebtable_filter ebtables ip6table_filter ip6_tables w83627ehf hwmon_vid iTCO_wdt gpio_ich iTCO_vendor_support ppdev intel_powerclamp coretemp kvm_intel kvm snd_hda_codec_hdmi snd_hda_codec_via snd_hda_codec_generic snd_hda_intel irqbypass intel_cstate snd_hda_codec intel_uncore snd_hda_core
[27322.775696]  snd_hwdep snd_seq snd_seq_device snd_pcm i7core_edac i2c_i801 snd_timer i2c_smbus edac_core snd lpc_ich tpm_infineon soundcore parport_pc shpchp acpi_cpufreq tpm_tis tpm_tis_core parport tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc ata_generic pata_acpi amdkfd amd_iommu_v2 radeon i2c_algo_bit drm_kms_helper crc32c_intel ttm serio_raw uas drm usb_storage firewire_ohci r8169 firewire_core mii pata_via crc_itu_t fjes
[27322.775735] CPU: 6 PID: 10822 Comm: cheese Not tainted 4.8.0-0.rc7.git0.1.fc25.x86_64 #1
[27322.775737] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./P55M Pro, BIOS P1.50 09/10/2009
[27322.775740]  0000000000000286 000000001980c656 ffff9fb0b9053b88 ffffffffbd3e55ad
[27322.775745]  ffff9fb0b9053bd8 0000000000000000 ffff9fb0b9053bc8 ffffffffbd0a0e2b
[27322.775748]  000000edb9053bc8 0000000000000000 ffffffffbded4400 ffff9fb1891984c0
[27322.775753] Call Trace:
[27322.775760]  [<ffffffffbd3e55ad>] dump_stack+0x63/0x86
[27322.775765]  [<ffffffffbd0a0e2b>] __warn+0xcb/0xf0
[27322.775769]  [<ffffffffbd0a0eaf>] warn_slowpath_fmt+0x5f/0x80
[27322.775774]  [<ffffffffbd2d3298>] ? kernfs_find_and_get_ns+0x48/0x60
[27322.775777]  [<ffffffffbd2d6deb>] sysfs_remove_group+0x8b/0x90
[27322.775782]  [<ffffffffbd536707>] dpm_sysfs_remove+0x57/0x60
[27322.775785]  [<ffffffffbd528e78>] device_del+0x58/0x260
[27322.775789]  [<ffffffffbd4de532>] ? kbd_disconnect+0x22/0x30
[27322.775794]  [<ffffffffbd624ff3>] evdev_disconnect+0x23/0x60
[27322.775797]  [<ffffffffbd61fec0>] __input_unregister_device+0xb0/0x150
[27322.775800]  [<ffffffffbd620c97>] input_unregister_device+0x47/0x70
[27322.775808]  [<ffffffffc0810e42>] uvc_status_cleanup+0x42/0x50 [uvcvideo]
[27322.775813]  [<ffffffffc08061ea>] uvc_delete+0x1a/0x160 [uvcvideo]
[27322.775818]  [<ffffffffc0806403>] uvc_release+0x23/0x30 [uvcvideo]
[27322.775830]  [<ffffffffc0782916>] v4l2_device_release+0xe6/0x120 [videodev]
[27322.775834]  [<ffffffffbd528662>] device_release+0x32/0x90
[27322.775838]  [<ffffffffbd3e7cca>] kobject_release+0x6a/0x170
[27322.775842]  [<ffffffffbd3e7b97>] kobject_put+0x27/0x50
[27322.775845]  [<ffffffffbd528967>] put_device+0x17/0x20
[27322.775853]  [<ffffffffc0781490>] v4l2_release+0x50/0x80 [videodev]
[27322.775857]  [<ffffffffbd25246f>] __fput+0xdf/0x1f0
[27322.775861]  [<ffffffffbd2525be>] ____fput+0xe/0x10
[27322.775865]  [<ffffffffbd0bf010>] task_work_run+0x80/0xa0
[27322.775869]  [<ffffffffbd0032d2>] exit_to_usermode_loop+0xc2/0xd0
[27322.775873]  [<ffffffffbd003be1>] syscall_return_slowpath+0xa1/0xb0
[27322.775878]  [<ffffffffbd80137a>] entry_SYSCALL_64_fastpath+0xa2/0xa4
[27322.775880] ---[ end trace 6d963d9954ccbe30 ]---

This message is a reminder that Fedora 23 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 23. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '23'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not 
able to fix it before Fedora 23 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
of Fedora, you are encouraged  change the 'version' to a later Fedora 
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events. Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

still present in f25 4.8.8-300.fc25

*********** MASS BUG UPDATE **************
We apologize for the inconvenience.  There is a large number of bugs to go through and several of them have gone stale.  Due to this, we are doing a mass bug update across all of the Fedora 25 kernel bugs.
 
Fedora 25 has now been rebased to 4.9.3-200.fc25.  Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.
 
If you have moved on to Fedora 26, and are still experiencing this issue, please change the version to Fedora 26.
 
If you experience different issues, please open a new bug report for those.

Currently running 4.9.9-100.fc24.x86_64 on F24. Haven't seen this specific crash come up recently. Feel free to close the issue.

I can still trigger it on 4.9.9-200.fc25.x86_64 trivially;
just unplug a usb webcam while cheese is using it.

[ 3502.332761] ------------[ cut here ]------------
[ 3502.332769] WARNING: CPU: 3 PID: 27678 at fs/sysfs/group.c:237 sysfs_remove_group+0x8c/0x90
[ 3502.332771] sysfs group 'power' not found for kobject 'event19'
[ 3502.332771] Modules linked in: xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_ipv4 nf_log_common xt_LOG xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_raw ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_security ip6table_mangle iptable_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 iscsi_tcp libiscsi_tcp nf_nat_ipv4 libiscsi nf_nat nf_conntrack scsi_transport_iscsi iptable_security iptable_mangle ebtable_filter ebtables ip6table_filter ip6_tables intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel iTCO_wdt iTCO_vendor_support kvm mei_wdt irqbypass arc4 intel_cstate intel_uncore iwldvm intel_rapl_perf mac80211 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic
[ 3502.332814]  uvcvideo snd_hda_intel iwlwifi snd_hda_codec videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_hda_core videobuf2_core videodev snd_hwdep snd_seq snd_seq_device joydev cfg80211 media snd_pcm i2c_i801 i2c_smbus lpc_ich snd_timer mei_me shpchp mei wmi thinkpad_acpi snd soundcore rfkill tpm_tis tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc dm_crypt i915 crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel serio_raw i2c_algo_bit drm_kms_helper sdhci_pci e1000e sdhci drm mmc_core ptp pps_core fjes video
[ 3502.332855] CPU: 3 PID: 27678 Comm: cheese Not tainted 4.9.9-200.fc25.x86_64 #1
[ 3502.332856] Hardware name: LENOVO 2429BP3/2429BP3, BIOS G4ET95WW (2.55 ) 08/12/2013
[ 3502.332858]  ffffaaf0c10cbb98 ffffffffa63f467d ffffaaf0c10cbbe8 0000000000000000
[ 3502.332861]  ffffaaf0c10cbbd8 ffffffffa60a205b 000000edc10cbbd8 0000000000000000
[ 3502.332864]  ffffffffa6ed9920 ffff992800b1e068 ffff9927ce24d878 ffff99280b853bd8
[ 3502.332867] Call Trace:
[ 3502.332873]  [<ffffffffa63f467d>] dump_stack+0x63/0x86
[ 3502.332876]  [<ffffffffa60a205b>] __warn+0xcb/0xf0
[ 3502.332878]  [<ffffffffa60a20df>] warn_slowpath_fmt+0x5f/0x80
[ 3502.332882]  [<ffffffffa62dfae8>] ? kernfs_find_and_get_ns+0x48/0x60
[ 3502.332884]  [<ffffffffa62e35cc>] sysfs_remove_group+0x8c/0x90
[ 3502.332887]  [<ffffffffa6554a17>] dpm_sysfs_remove+0x57/0x60
[ 3502.332890]  [<ffffffffa6547258>] device_del+0x58/0x270
[ 3502.332894]  [<ffffffffa64fb9c2>] ? kbd_disconnect+0x22/0x30
[ 3502.332897]  [<ffffffffa6644f43>] evdev_disconnect+0x23/0x60
[ 3502.332901]  [<ffffffffa663fdf0>] __input_unregister_device+0xb0/0x150
[ 3502.332904]  [<ffffffffa6640bd7>] input_unregister_device+0x47/0x70
[ 3502.332910]  [<ffffffffc06d2e42>] uvc_status_cleanup+0x42/0x50 [uvcvideo]
[ 3502.332913]  [<ffffffffc06c81ea>] uvc_delete+0x1a/0x160 [uvcvideo]
[ 3502.332916]  [<ffffffffc06c8403>] uvc_release+0x23/0x30 [uvcvideo]
[ 3502.332924]  [<ffffffffc063c936>] v4l2_device_release+0xe6/0x120 [videodev]
[ 3502.332926]  [<ffffffffa6546a52>] device_release+0x32/0x90
[ 3502.332929]  [<ffffffffa63f6d9a>] kobject_release+0x6a/0x170
[ 3502.332931]  [<ffffffffa63f6c67>] kobject_put+0x27/0x50
[ 3502.332933]  [<ffffffffa6546d57>] put_device+0x17/0x20
[ 3502.332939]  [<ffffffffc063b490>] v4l2_release+0x50/0x80 [videodev]
[ 3502.332942]  [<ffffffffa625bd1f>] __fput+0xdf/0x1f0
[ 3502.332944]  [<ffffffffa625be6e>] ____fput+0xe/0x10
[ 3502.332948]  [<ffffffffa60c0b50>] task_work_run+0x80/0xa0
[ 3502.332950]  [<ffffffffa60032ba>] exit_to_usermode_loop+0xaa/0xb0
[ 3502.332953]  [<ffffffffa6003baa>] syscall_return_slowpath+0xaa/0xb0
[ 3502.332956]  [<ffffffffa681df44>] entry_SYSCALL_64_fastpath+0xa7/0xa9
[ 3502.332958] ---[ end trace a72f92a5b605dc1f ]---
[ 3502.344732] ------------[ cut here ]------------
[ 3502.344742] WARNING: CPU: 3 PID: 27678 at fs/sysfs/group.c:237 sysfs_remove_group+0x8c/0x90
[ 3502.344744] sysfs group 'power' not found for kobject 'input20'
[ 3502.344744] Modules linked in: xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_ipv4 nf_log_common xt_LOG xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_raw ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_security ip6table_mangle iptable_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 iscsi_tcp libiscsi_tcp nf_nat_ipv4 libiscsi nf_nat nf_conntrack scsi_transport_iscsi iptable_security iptable_mangle ebtable_filter ebtables ip6table_filter ip6_tables intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel iTCO_wdt iTCO_vendor_support kvm mei_wdt irqbypass arc4 intel_cstate intel_uncore iwldvm intel_rapl_perf mac80211 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic
[ 3502.344782]  uvcvideo snd_hda_intel iwlwifi snd_hda_codec videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_hda_core videobuf2_core videodev snd_hwdep snd_seq snd_seq_device joydev cfg80211 media snd_pcm i2c_i801 i2c_smbus lpc_ich snd_timer mei_me shpchp mei wmi thinkpad_acpi snd soundcore rfkill tpm_tis tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc dm_crypt i915 crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel serio_raw i2c_algo_bit drm_kms_helper sdhci_pci e1000e sdhci drm mmc_core ptp pps_core fjes video
[ 3502.344820] CPU: 3 PID: 27678 Comm: cheese Tainted: G        W       4.9.9-200.fc25.x86_64 #1
[ 3502.344821] Hardware name: LENOVO 2429BP3/2429BP3, BIOS G4ET95WW (2.55 ) 08/12/2013
[ 3502.344823]  ffffaaf0c10cbbc0 ffffffffa63f467d ffffaaf0c10cbc10 0000000000000000
[ 3502.344826]  ffffaaf0c10cbc00 ffffffffa60a205b 000000edc10cbc00 0000000000000000
[ 3502.344829]  ffffffffa6ed9920 ffff9927ea331500 ffff9927ce24d878 ffff99280b853bd8
[ 3502.344831] Call Trace:
[ 3502.344837]  [<ffffffffa63f467d>] dump_stack+0x63/0x86
[ 3502.344840]  [<ffffffffa60a205b>] __warn+0xcb/0xf0
[ 3502.344842]  [<ffffffffa60a20df>] warn_slowpath_fmt+0x5f/0x80
[ 3502.344846]  [<ffffffffa62dfae8>] ? kernfs_find_and_get_ns+0x48/0x60
[ 3502.344848]  [<ffffffffa62e35cc>] sysfs_remove_group+0x8c/0x90
[ 3502.344850]  [<ffffffffa6554a17>] dpm_sysfs_remove+0x57/0x60
[ 3502.344854]  [<ffffffffa6547258>] device_del+0x58/0x270
[ 3502.344857]  [<ffffffffa60e6d14>] ? __wake_up+0x44/0x50
[ 3502.344861]  [<ffffffffa663fe70>] __input_unregister_device+0x130/0x150
[ 3502.344864]  [<ffffffffa6640bd7>] input_unregister_device+0x47/0x70
[ 3502.344870]  [<ffffffffc06d2e42>] uvc_status_cleanup+0x42/0x50 [uvcvideo]
[ 3502.344873]  [<ffffffffc06c81ea>] uvc_delete+0x1a/0x160 [uvcvideo]
[ 3502.344876]  [<ffffffffc06c8403>] uvc_release+0x23/0x30 [uvcvideo]
[ 3502.344885]  [<ffffffffc063c936>] v4l2_device_release+0xe6/0x120 [videodev]
[ 3502.344887]  [<ffffffffa6546a52>] device_release+0x32/0x90
[ 3502.344889]  [<ffffffffa63f6d9a>] kobject_release+0x6a/0x170
[ 3502.344891]  [<ffffffffa63f6c67>] kobject_put+0x27/0x50
[ 3502.344893]  [<ffffffffa6546d57>] put_device+0x17/0x20
[ 3502.344899]  [<ffffffffc063b490>] v4l2_release+0x50/0x80 [videodev]
[ 3502.344902]  [<ffffffffa625bd1f>] __fput+0xdf/0x1f0
[ 3502.344904]  [<ffffffffa625be6e>] ____fput+0xe/0x10
[ 3502.344908]  [<ffffffffa60c0b50>] task_work_run+0x80/0xa0
[ 3502.344911]  [<ffffffffa60032ba>] exit_to_usermode_loop+0xaa/0xb0
[ 3502.344913]  [<ffffffffa6003baa>] syscall_return_slowpath+0xaa/0xb0
[ 3502.344917]  [<ffffffffa681df44>] entry_SYSCALL_64_fastpath+0xa7/0xa9
[ 3502.344919] ---[ end trace a72f92a5b605dc20 ]---
[ 3502.344935] ------------[ cut here ]------------
[ 3502.344938] WARNING: CPU: 3 PID: 27678 at fs/sysfs/group.c:237 sysfs_remove_group+0x8c/0x90
[ 3502.344938] sysfs group 'id' not found for kobject 'input20'
[ 3502.344939] Modules linked in: xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_ipv4 nf_log_common xt_LOG xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_raw ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_security ip6table_mangle iptable_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 iscsi_tcp libiscsi_tcp nf_nat_ipv4 libiscsi nf_nat nf_conntrack scsi_transport_iscsi iptable_security iptable_mangle ebtable_filter ebtables ip6table_filter ip6_tables intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel iTCO_wdt iTCO_vendor_support kvm mei_wdt irqbypass arc4 intel_cstate intel_uncore iwldvm intel_rapl_perf mac80211 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic
[ 3502.344967]  uvcvideo snd_hda_intel iwlwifi snd_hda_codec videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_hda_core videobuf2_core videodev snd_hwdep snd_seq snd_seq_device joydev cfg80211 media snd_pcm i2c_i801 i2c_smbus lpc_ich snd_timer mei_me shpchp mei wmi thinkpad_acpi snd soundcore rfkill tpm_tis tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc dm_crypt i915 crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel serio_raw i2c_algo_bit drm_kms_helper sdhci_pci e1000e sdhci drm mmc_core ptp pps_core fjes video
[ 3502.344994] CPU: 3 PID: 27678 Comm: cheese Tainted: G        W       4.9.9-200.fc25.x86_64 #1
[ 3502.344995] Hardware name: LENOVO 2429BP3/2429BP3, BIOS G4ET95WW (2.55 ) 08/12/2013
[ 3502.344996]  ffffaaf0c10cbb88 ffffffffa63f467d ffffaaf0c10cbbd8 0000000000000000
[ 3502.344998]  ffffaaf0c10cbbc8 ffffffffa60a205b 000000eda62df437 0000000000000000
[ 3502.345001]  ffffffffa6eec7e0 ffff9927ea331500 ffffffffa6eec5c0 ffff99280b853bd8
[ 3502.345003] Call Trace:
[ 3502.345006]  [<ffffffffa63f467d>] dump_stack+0x63/0x86
[ 3502.345008]  [<ffffffffa60a205b>] __warn+0xcb/0xf0
[ 3502.345010]  [<ffffffffa60a20df>] warn_slowpath_fmt+0x5f/0x80
[ 3502.345013]  [<ffffffffa62dfae8>] ? kernfs_find_and_get_ns+0x48/0x60
[ 3502.345015]  [<ffffffffa62e35cc>] sysfs_remove_group+0x8c/0x90
[ 3502.345017]  [<ffffffffa62e367e>] sysfs_remove_groups+0x2e/0x50
[ 3502.345019]  [<ffffffffa654699e>] device_remove_attrs+0x5e/0x80
[ 3502.345021]  [<ffffffffa6547331>] device_del+0x131/0x270
[ 3502.345024]  [<ffffffffa60e6d14>] ? __wake_up+0x44/0x50
[ 3502.345027]  [<ffffffffa663fe70>] __input_unregister_device+0x130/0x150
[ 3502.345029]  [<ffffffffa6640bd7>] input_unregister_device+0x47/0x70
[ 3502.345033]  [<ffffffffc06d2e42>] uvc_status_cleanup+0x42/0x50 [uvcvideo]
[ 3502.345036]  [<ffffffffc06c81ea>] uvc_delete+0x1a/0x160 [uvcvideo]
[ 3502.345039]  [<ffffffffc06c8403>] uvc_release+0x23/0x30 [uvcvideo]
[ 3502.345045]  [<ffffffffc063c936>] v4l2_device_release+0xe6/0x120 [videodev]
[ 3502.345047]  [<ffffffffa6546a52>] device_release+0x32/0x90
[ 3502.345049]  [<ffffffffa63f6d9a>] kobject_release+0x6a/0x170
[ 3502.345050]  [<ffffffffa63f6c67>] kobject_put+0x27/0x50
[ 3502.345053]  [<ffffffffa6546d57>] put_device+0x17/0x20
[ 3502.345058]  [<ffffffffc063b490>] v4l2_release+0x50/0x80 [videodev]
[ 3502.345060]  [<ffffffffa625bd1f>] __fput+0xdf/0x1f0
[ 3502.345063]  [<ffffffffa625be6e>] ____fput+0xe/0x10
[ 3502.345065]  [<ffffffffa60c0b50>] task_work_run+0x80/0xa0
[ 3502.345067]  [<ffffffffa60032ba>] exit_to_usermode_loop+0xaa/0xb0
[ 3502.345069]  [<ffffffffa6003baa>] syscall_return_slowpath+0xaa/0xb0
[ 3502.345072]  [<ffffffffa681df44>] entry_SYSCALL_64_fastpath+0xa7/0xa9
[ 3502.345074] ---[ end trace a72f92a5b605dc21 ]---
[ 3502.345074] ------------[ cut here ]------------
[ 3502.345076] WARNING: CPU: 3 PID: 27678 at fs/sysfs/group.c:237 sysfs_remove_group+0x8c/0x90
[ 3502.345077] sysfs group 'capabilities' not found for kobject 'input20'
[ 3502.345078] Modules linked in: xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_ipv4 nf_log_common xt_LOG xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_raw ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_security ip6table_mangle iptable_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 iscsi_tcp libiscsi_tcp nf_nat_ipv4 libiscsi nf_nat nf_conntrack scsi_transport_iscsi iptable_security iptable_mangle ebtable_filter ebtables ip6table_filter ip6_tables intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel iTCO_wdt iTCO_vendor_support kvm mei_wdt irqbypass arc4 intel_cstate intel_uncore iwldvm intel_rapl_perf mac80211 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic
[ 3502.345106]  uvcvideo snd_hda_intel iwlwifi snd_hda_codec videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_hda_core videobuf2_core videodev snd_hwdep snd_seq snd_seq_device joydev cfg80211 media snd_pcm i2c_i801 i2c_smbus lpc_ich snd_timer mei_me shpchp mei wmi thinkpad_acpi snd soundcore rfkill tpm_tis tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc dm_crypt i915 crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel serio_raw i2c_algo_bit drm_kms_helper sdhci_pci e1000e sdhci drm mmc_core ptp pps_core fjes video
[ 3502.345132] CPU: 3 PID: 27678 Comm: cheese Tainted: G        W       4.9.9-200.fc25.x86_64 #1
[ 3502.345133] Hardware name: LENOVO 2429BP3/2429BP3, BIOS G4ET95WW (2.55 ) 08/12/2013
[ 3502.345134]  ffffaaf0c10cbb88 ffffffffa63f467d ffffaaf0c10cbbd8 0000000000000000
[ 3502.345136]  ffffaaf0c10cbbc8 ffffffffa60a205b 000000eda62df437 0000000000000000
[ 3502.345139]  ffffffffa6eec620 ffff9927ea331500 ffffffffa6eec5c0 ffff99280b853bd8
[ 3502.345141] Call Trace:
[ 3502.345144]  [<ffffffffa63f467d>] dump_stack+0x63/0x86
[ 3502.345146]  [<ffffffffa60a205b>] __warn+0xcb/0xf0
[ 3502.345147]  [<ffffffffa60a20df>] warn_slowpath_fmt+0x5f/0x80
[ 3502.345150]  [<ffffffffa62dfae8>] ? kernfs_find_and_get_ns+0x48/0x60
[ 3502.345152]  [<ffffffffa62e35cc>] sysfs_remove_group+0x8c/0x90
[ 3502.345154]  [<ffffffffa62e367e>] sysfs_remove_groups+0x2e/0x50
[ 3502.345156]  [<ffffffffa654699e>] device_remove_attrs+0x5e/0x80
[ 3502.345158]  [<ffffffffa6547331>] device_del+0x131/0x270
[ 3502.345161]  [<ffffffffa60e6d14>] ? __wake_up+0x44/0x50
[ 3502.345163]  [<ffffffffa663fe70>] __input_unregister_device+0x130/0x150
[ 3502.345166]  [<ffffffffa6640bd7>] input_unregister_device+0x47/0x70
[ 3502.345169]  [<ffffffffc06d2e42>] uvc_status_cleanup+0x42/0x50 [uvcvideo]
[ 3502.345172]  [<ffffffffc06c81ea>] uvc_delete+0x1a/0x160 [uvcvideo]
[ 3502.345175]  [<ffffffffc06c8403>] uvc_release+0x23/0x30 [uvcvideo]
[ 3502.345181]  [<ffffffffc063c936>] v4l2_device_release+0xe6/0x120 [videodev]
[ 3502.345183]  [<ffffffffa6546a52>] device_release+0x32/0x90
[ 3502.345185]  [<ffffffffa63f6d9a>] kobject_release+0x6a/0x170
[ 3502.345186]  [<ffffffffa63f6c67>] kobject_put+0x27/0x50
[ 3502.345188]  [<ffffffffa6546d57>] put_device+0x17/0x20
[ 3502.345194]  [<ffffffffc063b490>] v4l2_release+0x50/0x80 [videodev]
[ 3502.345196]  [<ffffffffa625bd1f>] __fput+0xdf/0x1f0
[ 3502.345198]  [<ffffffffa625be6e>] ____fput+0xe/0x10
[ 3502.345201]  [<ffffffffa60c0b50>] task_work_run+0x80/0xa0
[ 3502.345203]  [<ffffffffa60032ba>] exit_to_usermode_loop+0xaa/0xb0
[ 3502.345205]  [<ffffffffa6003baa>] syscall_return_slowpath+0xaa/0xb0
[ 3502.345207]  [<ffffffffa681df44>] entry_SYSCALL_64_fastpath+0xa7/0xa9
[ 3502.345209] ---[ end trace a72f92a5b605dc22 ]---
[ 3502.345424] ------------[ cut here ]------------
[ 3502.345429] WARNING: CPU: 3 PID: 27678 at fs/sysfs/group.c:237 sysfs_remove_group+0x8c/0x90
[ 3502.345430] sysfs group 'power' not found for kobject 'media1'
[ 3502.345431] Modules linked in: xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_ipv4 nf_log_common xt_LOG xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_raw ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_security ip6table_mangle iptable_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 iscsi_tcp libiscsi_tcp nf_nat_ipv4 libiscsi nf_nat nf_conntrack scsi_transport_iscsi iptable_security iptable_mangle ebtable_filter ebtables ip6table_filter ip6_tables intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel iTCO_wdt iTCO_vendor_support kvm mei_wdt irqbypass arc4 intel_cstate intel_uncore iwldvm intel_rapl_perf mac80211 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic
[ 3502.345470]  uvcvideo snd_hda_intel iwlwifi snd_hda_codec videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_hda_core videobuf2_core videodev snd_hwdep snd_seq snd_seq_device joydev cfg80211 media snd_pcm i2c_i801 i2c_smbus lpc_ich snd_timer mei_me shpchp mei wmi thinkpad_acpi snd soundcore rfkill tpm_tis tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc dm_crypt i915 crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel serio_raw i2c_algo_bit drm_kms_helper sdhci_pci e1000e sdhci drm mmc_core ptp pps_core fjes video
[ 3502.345508] CPU: 3 PID: 27678 Comm: cheese Tainted: G        W       4.9.9-200.fc25.x86_64 #1
[ 3502.345509] Hardware name: LENOVO 2429BP3/2429BP3, BIOS G4ET95WW (2.55 ) 08/12/2013
[ 3502.345510]  ffffaaf0c10cbbc0 ffffffffa63f467d ffffaaf0c10cbc10 0000000000000000
[ 3502.345514]  ffffaaf0c10cbc00 ffffffffa60a205b 000000edc10cbc00 0000000000000000
[ 3502.345517]  ffffffffa6ed9920 ffff99280b4d2558 ffff9927ea20f170 ffff9927ea20f130
[ 3502.345521] Call Trace:
[ 3502.345525]  [<ffffffffa63f467d>] dump_stack+0x63/0x86
[ 3502.345527]  [<ffffffffa60a205b>] __warn+0xcb/0xf0
[ 3502.345530]  [<ffffffffa60a20df>] warn_slowpath_fmt+0x5f/0x80
[ 3502.345533]  [<ffffffffa62dfae8>] ? kernfs_find_and_get_ns+0x48/0x60
[ 3502.345536]  [<ffffffffa62e35cc>] sysfs_remove_group+0x8c/0x90
[ 3502.345538]  [<ffffffffa6554a17>] dpm_sysfs_remove+0x57/0x60
[ 3502.345542]  [<ffffffffa6547258>] device_del+0x58/0x270
[ 3502.345547]  [<ffffffffc04d6c6f>] media_devnode_unregister+0x3f/0x60 [media]
[ 3502.345552]  [<ffffffffc04d61ff>] media_device_unregister+0x11f/0x160 [media]
[ 3502.345557]  [<ffffffffc06c823f>] uvc_delete+0x6f/0x160 [uvcvideo]
[ 3502.345561]  [<ffffffffc06c8403>] uvc_release+0x23/0x30 [uvcvideo]
[ 3502.345570]  [<ffffffffc063c936>] v4l2_device_release+0xe6/0x120 [videodev]
[ 3502.345573]  [<ffffffffa6546a52>] device_release+0x32/0x90
[ 3502.345575]  [<ffffffffa63f6d9a>] kobject_release+0x6a/0x170
[ 3502.345578]  [<ffffffffa63f6c67>] kobject_put+0x27/0x50
[ 3502.345581]  [<ffffffffa6546d57>] put_device+0x17/0x20
[ 3502.345590]  [<ffffffffc063b490>] v4l2_release+0x50/0x80 [videodev]
[ 3502.345593]  [<ffffffffa625bd1f>] __fput+0xdf/0x1f0
[ 3502.345596]  [<ffffffffa625be6e>] ____fput+0xe/0x10
[ 3502.345599]  [<ffffffffa60c0b50>] task_work_run+0x80/0xa0
[ 3502.345602]  [<ffffffffa60032ba>] exit_to_usermode_loop+0xaa/0xb0
[ 3502.345605]  [<ffffffffa6003baa>] syscall_return_slowpath+0xaa/0xb0
[ 3502.345608]  [<ffffffffa681df44>] entry_SYSCALL_64_fastpath+0xa7/0xa9
[ 3502.345634] ---[ end trace a72f92a5b605dc23 ]---

*********** MASS BUG UPDATE **************

We apologize for the inconvenience.  There is a large number of bugs to go through and several of them have gone stale.  Due to this, we are doing a mass bug update across all of the Fedora 25 kernel bugs.

Fedora 25 has now been rebased to 4.10.9-200.fc25.  Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.

If you have moved on to Fedora 26, and are still experiencing this issue, please change the version to Fedora 26.

If you experience different issues, please open a new bug report for those.

Still around in 4.10.8-200.fc25.x86_64

This message is a reminder that Fedora 25 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 25. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '25'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version'
to a later Fedora version.

Thank you for reporting this issue and we are sorry that we were not
able to fix it before Fedora 25 is end of life. If you would still like
to see this bug fixed and are able to reproduce it against a later version
of Fedora, you are encouraged  change the 'version' to a later Fedora
version prior this bug is closed as described in the policy above.

Although we aim to fix as many bugs as possible during every release's
lifetime, sometimes those efforts are overtaken by events. Often a
more recent Fedora release includes newer upstream software that fixes
bugs or makes them obsolete.

Still in 4.13.12-300.fc27.x86_64

We apologize for the inconvenience.  There is a large number of bugs to go through and several of them have gone stale.  As kernel maintainers, we try to keep up with bugzilla but due the rate at which the upstream kernel project moves, bugs may be fixed without any indication to us. Due to this, we are doing a mass bug update across all of the Fedora 27 kernel bugs.
 
Fedora 27 has now been rebased to 4.15.3-300.f27.  Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.
 
If you experience different issues, please open a new bug report for those.

*********** MASS BUG UPDATE **************
This bug is being closed with INSUFFICIENT_DATA as there has not been a response in 4 weeks. If you did actually update, we apologize for the inconvenience (there are a lot of bugs). If you are still experiencing this issue, please reopen and attach the relevant data from the latest kernel you are running and any data that might have been requested previously.