Created attachment 864380 [details]
File: dmesg

Description of problem:
Had error upon login following reboot after yum update - no symptoms to note.

Version-Release number of selected component:
kernel

Additional info:
reporter:       libreport-2.1.12
cmdline:        BOOT_IMAGE=/vmlinuz-3.13.3-201.fc20.i686+PAE root=/dev/mapper/fedora-root ro rd.lvm.lv=fedora/swap rd.md=0 rd.dm=0 vconsole.keymap=us rd.luks=0 vconsole.font=latarcyrheb-sun16 rd.lvm.lv=fedora/root ipv6.disable=1 biosdevname=0 selinux=0 consoleblank=0 nomodeset LANG=en_US.UTF-8
kernel:         3.13.3-201.fc20.i686+PAE
runlevel:       N 5
type:           Kerneloops

Truncated backtrace:
WARNING: CPU: 0 PID: 1433 at fs/sysfs/group.c:214 sysfs_remove_group+0xb9/0xc0()
sysfs group c0c954e8 not found for kobject 'target2:0:0'
Modules linked in: vfat fat usb_storage fuse snd_intel8x0 snd_intel8x0m snd_ac97_codec iTCO_wdt ac97_bus iTCO_vendor_support snd_seq gpio_ich microcode ppdev lpc_ich snd_seq_device snd_pcm snd_page_alloc serio_raw mfd_core sony_laptop snd_timer parport_pc e100 mii snd rfkill i2c_i801 parport keyspan ezusb soundcore i2c_algo_bit drm_kms_helper ttm ata_generic pata_acpi drm firewire_ohci yenta_socket firewire_core crc_itu_t i2c_core
CPU: 0 PID: 1433 Comm: umount Not tainted 3.13.3-201.fc20.i686+PAE #1
Hardware name: Sony Corporation     PCG-GRZ610(UC)      , BIOS R0216B1 12/03/02  
 00000000 00000000 f5aa9d4c c09c3036 f5aa9d8c f5aa9d7c c04560ce c0b8457c
 f5aa9da8 00000599 c0b7f3b1 000000d6 c05cb159 c05cb159 00000000 c0c954e8
 f0d3ea1c f5aa9d94 c0456123 00000009 f5aa9d8c c0b8457c f5aa9da8 f5aa9dbc
Call Trace:
 [<c09c3036>] dump_stack+0x41/0x52
 [<c04560ce>] warn_slowpath_common+0x7e/0xa0
 [<c05cb159>] ? sysfs_remove_group+0xb9/0xc0
 [<c05cb159>] ? sysfs_remove_group+0xb9/0xc0
 [<c0456123>] warn_slowpath_fmt+0x33/0x40
 [<c05cb159>] sysfs_remove_group+0xb9/0xc0
 [<c0799097>] dpm_sysfs_remove+0x37/0x40
 [<c0790454>] device_del+0x34/0x170
 [<c07b4bb4>] scsi_target_reap_usercontext+0x24/0x30
 [<c046bb7c>] execute_in_process_context+0x4c/0x60
 [<c07b5d68>] scsi_target_reap+0x98/0xb0
 [<c07b7b07>] scsi_device_dev_release_usercontext+0xd7/0x110
 [<c046bb7c>] execute_in_process_context+0x4c/0x60
 [<c07b7a28>] scsi_device_dev_release+0x18/0x20
 [<c078fb8b>] device_release+0x2b/0x90
 [<c078fb92>] ? device_release+0x32/0x90
 [<c069beaf>] kobject_cleanup+0x6f/0x1a0
 [<c069bec7>] ? kobject_cleanup+0x87/0x1a0
 [<c05576fd>] ? kfree+0xdd/0x110
 [<c069bd85>] kobject_put+0x25/0x60
 [<c04ba26d>] ? module_refcount+0x7d/0xa0
 [<c07ab7af>] ? scsi_device_put+0x3f/0x50
 [<c078fe24>] put_device+0x14/0x20
 [<c07ab7ba>] scsi_device_put+0x4a/0x50
 [<c07bbf68>] scsi_disk_put+0x28/0x40
 [<c07bc1f0>] sd_release+0x40/0xc0
 [<c057eb61>] ? destroy_inode+0x31/0x50
 [<c0599318>] __blkdev_put+0x128/0x160
 [<c05992c9>] __blkdev_put+0xd9/0x160
 [<c0599ab0>] blkdev_put+0x40/0xf0
 [<c0569b3d>] kill_block_super+0x3d/0x70
 [<c0569dc3>] deactivate_locked_super+0x33/0x50
 [<c056a29a>] deactivate_super+0x3a/0x60
 [<c0582626>] mntput_no_expire+0x96/0x120
 [<c058378d>] SyS_umount+0x7d/0xc0
 [<c09d024d>] sysenter_do_call+0x12/0x28

Description of problem:
No idea. Running Firefox, Latexila, Evolution etc. in a XFCE session; and I unplugged my external USB hard drive which was not mounted in XFCE, but was previously used (and maybe still mounted?) in a GNOME/gnome-shell 3.10 session.

Version-Release number of selected component:
kernel

Additional info:
reporter:       libreport-2.1.12
cmdline:        BOOT_IMAGE=/vmlinuz-3.13.3-201.fc20.i686+PAE root=/dev/mapper/luks-8785709c-f3d6-4547-a51c-3f66be66e7aa ro rd.luks.uuid=luks-e7966f48-7243-4c85-a21c-264c9ddd76cd rd.md=0 rd.dm=0 vconsole.keymap=us vconsole.font=latarcyrheb-sun16 rd.luks.uuid=luks-8785709c-f3d6-4547-a51c-3f66be66e7aa rd.lvm.lv=fedora/01 rd.lvm.lv=fedora/00 rhgb quiet LANG=en_US.UTF-8
kernel:         3.13.3-201.fc20.i686+PAE
runlevel:       N 5
type:           Kerneloops

Truncated backtrace:
WARNING: CPU: 1 PID: 27141 at fs/sysfs/group.c:214 sysfs_remove_group+0xb9/0xc0()
sysfs group c0c954e8 not found for kobject 'target5:0:0'
Modules linked in: usblp tcp_lp rfcomm ses enclosure usb_storage snd_usb_audio snd_usbmidi_lib snd_rawmidi pwc videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media fuse ccm ip6t_rpfilter ip6t_REJECT 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 bnep nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_seq arc4 snd_seq_device snd_pcm coretemp thinkpad_acpi kvm iwl4965 iwlegacy snd_page_alloc snd_timer joydev snd microcode iTCO_wdt iTCO_vendor_support btusb bluetooth mac80211 lpc_ich serio_raw e1000e soundcore ptp i2c_i801 cfg80211 mfd_core pps_core rfkill tpm_tis tpm acpi_cpufreq dm_crypt nouveau mxm_wmi firewire_ohci i2c_algo_bit drm_kms_helper yenta_socket firewire_core ata_generic pata_acpi crc_itu_t ttm drm i2c_core wmi video
CPU: 1 PID: 27141 Comm: cryptsetup Not tainted 3.13.3-201.fc20.i686+PAE #1
Hardware name: LENOVO 766313U/766313U, BIOS 7LETC5WW (2.25 ) 11/14/2008
 00000000 00000000 d224badc c09c3036 d224bb1c d224bb0c c04560ce c0b8457c
 d224bb38 00006a05 c0b7f3b1 000000d6 c05cb159 c05cb159 00000000 c0c954e8
 e5f5321c d224bb24 c0456123 00000009 d224bb1c c0b8457c d224bb38 d224bb4c
Call Trace:
 [<c09c3036>] dump_stack+0x41/0x52
 [<c04560ce>] warn_slowpath_common+0x7e/0xa0
 [<c05cb159>] ? sysfs_remove_group+0xb9/0xc0
 [<c05cb159>] ? sysfs_remove_group+0xb9/0xc0
 [<c0456123>] warn_slowpath_fmt+0x33/0x40
 [<c05cb159>] sysfs_remove_group+0xb9/0xc0
 [<c0799097>] dpm_sysfs_remove+0x37/0x40
 [<c0790454>] device_del+0x34/0x170
 [<c07b4bb4>] scsi_target_reap_usercontext+0x24/0x30
 [<c046bb7c>] execute_in_process_context+0x4c/0x60
 [<c07b5d68>] scsi_target_reap+0x98/0xb0
 [<c07b7b07>] scsi_device_dev_release_usercontext+0xd7/0x110
 [<c046bb7c>] execute_in_process_context+0x4c/0x60
 [<c07b7a28>] scsi_device_dev_release+0x18/0x20
 [<c078fb8b>] device_release+0x2b/0x90
 [<c05576fd>] ? kfree+0xdd/0x110
 [<c069beaf>] kobject_cleanup+0x6f/0x1a0
 [<c069bec7>] ? kobject_cleanup+0x87/0x1a0
 [<c069bd85>] kobject_put+0x25/0x60
 [<c04ba26d>] ? module_refcount+0x7d/0xa0
 [<c07ab7af>] ? scsi_device_put+0x3f/0x50
 [<c078fe24>] put_device+0x14/0x20
 [<c07ab7ba>] scsi_device_put+0x4a/0x50
 [<c07bbf68>] scsi_disk_put+0x28/0x40
 [<c07bc1f0>] sd_release+0x40/0xc0
 [<c057eb61>] ? destroy_inode+0x31/0x50
 [<c0599318>] __blkdev_put+0x128/0x160
 [<c05992c9>] __blkdev_put+0xd9/0x160
 [<c0599ab0>] blkdev_put+0x40/0xf0
 [<c08808d0>] close_dev.isra.7+0x30/0x40
 [<c0880b89>] dm_put_device+0x29/0x40
 [<f7f9a2ab>] crypt_dtr+0xeb/0x120 [dm_crypt]
 [<c0880f91>] dm_table_destroy+0x51/0xd0
 [<c04a7fc6>] ? synchronize_sched_expedited+0x136/0x190
 [<c087e8bd>] __dm_destroy+0xdd/0x220
 [<c087f5a2>] dm_destroy+0x12/0x20
 [<c0884714>] dev_remove+0x104/0x160
 [<c06a622c>] ? _copy_from_user+0x2c/0x40
 [<c0884d64>] ctl_ioctl+0x214/0x490
 [<c0884610>] ? dev_suspend+0x220/0x220
 [<c0884fe0>] ? ctl_ioctl+0x490/0x490
 [<c0884ff1>] dm_ctl_ioctl+0x11/0x20
 [<c0578262>] do_vfs_ioctl+0x2e2/0x4c0
 [<c0642962>] ? inode_has_perm.isra.32+0x32/0x40
 [<c0642a7f>] ? file_has_perm+0x7f/0x90
 [<c0569301>] ? __fput+0x121/0x1e0
 [<c064346c>] ? selinux_file_ioctl+0x4c/0xf0
 [<c05784a0>] SyS_ioctl+0x60/0x80
 [<c09d024d>] sysenter_do_call+0x12/0x28

Description of problem:
/home/sampha/.cache/abrt/spool/oops-2014-02-18-18:42:53-6576-0


WARNING: CPU: 0 PID: 6571 at fs/sysfs/group.c:
mce: [Hardware Error]: Machine check events logge
WARNING: CPU: 0 PID: 6571 at fs/sysfs/group.c:214 sysfs
gnome-web-photo killed by SIGTRAP

some thing keep turning off the computer.

the computers stalls when more than 3 tabs are open.

the nextwork connection keep failing on its own, i have to keep turning on and off the computer
to get the newwork to connect.

Version-Release number of selected component:
kernel

Additional info:
reporter:       libreport-2.1.12
cmdline:        BOOT_IMAGE=/vmlinuz-3.13.3-201.fc20.i686 root=UUID=5ead9378-ef97-4c36-b612-2ae11bada38f ro rootflags=subvol=root vconsole.font=latarcyrheb-sun16 rhgb quiet LANG=en_US.UTF-8
kernel:         3.13.3-201.fc20.i686
runlevel:       N 5
type:           Kerneloops

Truncated backtrace:
WARNING: CPU: 0 PID: 6571 at fs/sysfs/group.c:214 sysfs_remove_group+0xb9/0xc0()
sysfs group c0c6ed68 not found for kobject 'target6:0:0'
Modules linked in: usblp fuse ip6t_rpfilter bnep bluetooth ip6t_REJECT 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 arc4 snd_hda_codec_realtek snd_hda_intel snd_hda_codec rtl8187 eeprom_93cx6 snd_hwdep snd_seq snd_seq_device snd_pcm mac80211 snd_page_alloc cfg80211 snd_timer coretemp i2c_i801 iTCO_wdt snd iTCO_vendor_support toshiba_acpi sparse_keymap rfkill microcode joydev soundcore r8169 lpc_ich serio_raw wmi mii binfmt_misc btrfs libcrc32c xor raid6_pq i915 i2c_algo_bit usb_storage drm_kms_helper drm i2c_core video
CPU: 0 PID: 6571 Comm: umount Not tainted 3.13.3-201.fc20.i686 #1
Hardware name: TOSHIBA Satellite L305/Portable PC, BIOS 1.90 06/04/2009
 00000000 00000000 e50d9d34 c09a61c8 e50d9d74 e50d9d64 c0448dde c0b61ebc
 e50d9d90 000019ab c0b5cc2f 000000d6 c05bba79 c05bba79 00000000 c0c6ed68
 f668661c e50d9d7c c0448e33 00000009 e50d9d74 c0b61ebc e50d9d90 e50d9da4
Call Trace:
 [<c09a61c8>] dump_stack+0x41/0x52
 [<c0448dde>] warn_slowpath_common+0x7e/0xa0
 [<c05bba79>] ? sysfs_remove_group+0xb9/0xc0
 [<c05bba79>] ? sysfs_remove_group+0xb9/0xc0
 [<c0448e33>] warn_slowpath_fmt+0x33/0x40
 [<c05bba79>] sysfs_remove_group+0xb9/0xc0
 [<c07772d7>] dpm_sysfs_remove+0x37/0x40
 [<c076e664>] device_del+0x34/0x170
 [<c0793364>] scsi_target_reap_usercontext+0x24/0x30
 [<c045e1fc>] execute_in_process_context+0x4c/0x60
 [<c0794518>] scsi_target_reap+0x98/0xb0
 [<c07962b7>] scsi_device_dev_release_usercontext+0xd7/0x110
 [<c045e1fc>] execute_in_process_context+0x4c/0x60
 [<c07961d8>] scsi_device_dev_release+0x18/0x20
 [<c076dd9b>] device_release+0x2b/0x90
 [<c0547f1d>] ? kfree+0xdd/0x110
 [<c068c0ef>] kobject_cleanup+0x6f/0x1a0
 [<c068c107>] ? kobject_cleanup+0x87/0x1a0
 [<c076dda2>] ? device_release+0x32/0x90
 [<c068bfc5>] kobject_put+0x25/0x60
 [<c04ac92d>] ? module_refcount+0x7d/0xa0
 [<c0789f6f>] ? scsi_device_put+0x3f/0x50
 [<c076e034>] put_device+0x14/0x20
 [<c0789f7a>] scsi_device_put+0x4a/0x50
 [<c079a718>] scsi_disk_put+0x28/0x40
 [<c079a9a0>] sd_release+0x40/0xc0
 [<c056f231>] ? destroy_inode+0x31/0x50
 [<c0589988>] __blkdev_put+0x128/0x160
 [<c0589939>] __blkdev_put+0xd9/0x160
 [<c058a120>] blkdev_put+0x40/0xf0
 [<c055a20d>] kill_block_super+0x3d/0x70
 [<f920fc6c>] fuse_kill_sb_blk+0x3c/0x50 [fuse]
 [<c055a493>] deactivate_locked_super+0x33/0x50
 [<c055a96a>] deactivate_super+0x3a/0x60
 [<c0572cf6>] mntput_no_expire+0x96/0x120
 [<c0573e5d>] SyS_umount+0x7d/0xc0
 [<c09b350d>] sysenter_do_call+0x12/0x28

This happened here (MacBookPro5,5) when I unplugged a wireless-mouse USB dongle that was loaded just normally during boot:

-----------------------
[    4.781814] logitech-djreceiver 0003:046D:C52B.0003: hiddev0,hidraw1: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:06.0-2/input2
[    4.790586] input: Logitech Unifying Device. Wireless PID:4007 as /devices/pci0000:00/0000:00:06.0/usb4/4-2/4-2:1.2/0003:046D:C52B.0003/input/input7
[    4.792193] logitech-djdevice 0003:046D:C52B.0005: input,hidraw2: USB HID v1.11 Keyboard [Logitech Unifying Device. Wireless PID:4007] on usb-0000:00:06.0-2:1
-----------------------

Just happened again when I unplugged the same wireless mouse USB dongle, so I guess it's pretty reproducible:

==================================
[25776.406633] usb 4-2: USB disconnect, device number 3
[25776.440728] ------------[ cut here ]------------
[25776.440739] WARNING: CPU: 1 PID: 1602 at fs/sysfs/group.c:214 sysfs_remove_group+0xc6/0xd0()
[25776.440741] sysfs group ffffffff81cb06e0 not found for kobject 'hidraw0'
[25776.440743] Modules linked in: rpcsec_gss_krb5 fuse ipt_MASQUERADE xt_CHECKSUM tun md4 nfsv4 nfs cifs dns_resolver fscache ccm ip6t_rpfilter ip6t_REJECT xt_conntrack bnep vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF) ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables vboxdrv(OF) 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 btusb bluetooth hid_appleir bcm5974 arc4 b43 bcma mac80211 cfg80211 rfkill applesmc input_polldev snd_hda_codec_cirrus twofish_generic nls_utf8 uvcvideo hfsplus twofish_x86_64_3way twofish_x86_64 twofish_common videobuf2_vmalloc videobuf2_memops dm_crypt videobuf2_core
[25776.440792]  videodev media coretemp kvm_intel nouveau snd_hda_intel snd_hda_codec snd_hwdep kvm mxm_wmi wmi video i2c_algo_bit ttm drm_kms_helper ssb mmc_core drm snd_seq microcode snd_seq_device snd_pcm shpchp snd_page_alloc snd_timer snd forcedeth soundcore i2c_nforce2 i2c_core apple_bl acpi_cpufreq binfmt_misc nfsd auth_rpcgss nfs_acl lockd sunrpc hid_logitech_dj firewire_ohci firewire_core crc_itu_t usb_storage ecryptfs encrypted_keys trusted tpm
[25776.440826] CPU: 1 PID: 1602 Comm: upowerd Tainted: GF          O 3.13.3-201.fc20.x86_64 #1
[25776.440828] Hardware name: Apple Inc. MacBookPro5,5/Mac-F2268AC8, BIOS    MBP55.88Z.00AC.B03.0906151708 06/15/09
[25776.440830]  0000000000000009 ffff88021f61dd20 ffffffff81686b48 ffff88021f61dd68
[25776.440834]  ffff88021f61dd58 ffffffff8106d47d 0000000000000000 ffffffff81cb06e0
[25776.440836]  ffff88003f8ed410 ffff88023342f8e8 ffff8802345a1520 ffff88021f61ddb8
[25776.440839] Call Trace:
[25776.440846]  [<ffffffff81686b48>] dump_stack+0x45/0x56
[25776.440850]  [<ffffffff8106d47d>] warn_slowpath_common+0x7d/0xa0
[25776.440853]  [<ffffffff8106d4ec>] warn_slowpath_fmt+0x4c/0x50
[25776.440856]  [<ffffffff81230ace>] ? sysfs_get_dirent_ns+0x4e/0x70
[25776.440858]  [<ffffffff81231d96>] sysfs_remove_group+0xc6/0xd0
[25776.440863]  [<ffffffff8141dba3>] dpm_sysfs_remove+0x43/0x50
[25776.440867]  [<ffffffff814138f5>] device_del+0x45/0x1c0
[25776.440869]  [<ffffffff81413a8e>] device_unregister+0x1e/0x60
[25776.440871]  [<ffffffff81413b4c>] device_destroy+0x3c/0x50
[25776.440875]  [<ffffffff81541cc7>] drop_ref.part.2+0x57/0x70
[25776.440877]  [<ffffffff815425ea>] hidraw_release+0x7a/0x90
[25776.440881]  [<ffffffff811ba63c>] __fput+0xdc/0x230
[25776.440884]  [<ffffffff811ba7de>] ____fput+0xe/0x10
[25776.440887]  [<ffffffff8108c0e7>] task_work_run+0xa7/0xe0
[25776.440891]  [<ffffffff81013a41>] do_notify_resume+0x61/0xa0
[25776.440895]  [<ffffffff81695de2>] int_signal+0x12/0x17
[25776.440897] ---[ end trace 3837a59f4e82ceb5 ]---


Plugging in the USB dongle again:


[25780.507144] usb 4-2: new full-speed USB device number 7 using ohci-pci
[25780.704409] usb 4-2: New USB device found, idVendor=046d, idProduct=c52b
[25780.704415] usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[25780.704417] usb 4-2: Product: USB Receiver
[25780.704420] usb 4-2: Manufacturer: Logitech
[25780.736340] logitech-djreceiver 0003:046D:C52B.000B: hiddev0,hidraw0: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:06.0-2/input2
[25780.742108] input: Logitech Unifying Device. Wireless PID:4007 as /devices/pci0000:00/0000:00:06.0/usb4/4-2/4-2:1.2/0003:046D:C52B.000B/input/input12
[25780.744460] logitech-djdevice 0003:046D:C52B.000C: input,hidraw1: USB HID v1.11 Keyboard [Logitech Unifying Device. Wireless PID:4007] on usb-0000:00:06.0-2:

Oh, and yes this is a duplicate of bug 1030988, which has also the upstream bug linked.

Description of problem:
I was testing the speed of certain filesystems on my usb. I had a usb running with XFS mounted at /run/media/[user name]/[usb name]. I ran filebench, a file system I/O tester in interatice mode as root. I loaded the fileserver set, and did "run 60" (run for 60 seconds). The test worked for the first time actually, and I wanted to make sure the results were accurate so I ran the test again. Then it reported a kernel crash. filebench is still running, probably because it didn't know how to handle the problem with the kernel.

Version-Release number of selected component:
kernel

Additional info:
reporter:       libreport-2.1.12
cmdline:        BOOT_IMAGE=/vmlinuz-3.13.4-200.fc20.x86_64 root=/dev/mapper/fedora_localhost-root ro rd.md=0 rd.dm=0 vconsole.keymap=us rd.lvm.lv=fedora_localhost/root rd.luks.uuid=luks-8a086c48-2c5e-4e5e-9916-561b93a10c11 rd.lvm.lv=fedora_localhost/swap vconsole.font=latarcyrheb-sun16 rhgb quiet LANG=en_US.UTF-8
kernel:         3.13.4-200.fc20.x86_64
runlevel:       N 5
type:           Kerneloops

Truncated backtrace:
WARNING: CPU: 3 PID: 5661 at fs/sysfs/group.c:214 sysfs_remove_group+0xc6/0xd0()
sysfs group ffffffff81cb06e0 not found for kobject 'target6:0:0'
Modules linked in: usb_storage loop udp_diag tcp_diag inet_diag ccm tcp_lp fuse bnep bluetooth ip6t_rpfilter ip6t_REJECT 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 vfat fat arc4 rt2800pci rt2800mmio snd_hda_codec_hdmi x86_pkg_temp_thermal rt2800lib rt2x00pci coretemp rt2x00mmio rt2x00lib snd_hda_codec_idt rtsx_pci_sdmmc eeprom_93cx6 kvm_intel mmc_core kvm rtsx_pci_ms snd_hda_intel snd_hda_codec mac80211 memstick uvcvideo snd_hwdep videobuf2_vmalloc videobuf2_memops videobuf2_core videodev hp_wmi rtsx_pci r8169 snd_seq snd_seq_device snd_pcm mei_me sparse_keymap iTCO_wdt iTCO_vendor_support cfg80211 joydev crc_ccitt hp_accel media rfkill mii microcode wmi snd_page_alloc snd_timer snd mei lis3lv02d lpc_ich input_polldev serio_raw shpchp mfd_core i2c_i801 soundcore dm_crypt i915 crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit drm_kms_helper drm i2c_core ghash_clmulni_intel video
CPU: 3 PID: 5661 Comm: bash Not tainted 3.13.4-200.fc20.x86_64 #1
Hardware name: Hewlett-Packard HP ENVY m6 Notebook PC/18A4, BIOS F.25 01/21/2013
 0000000000000009 ffff880247f15b20 ffffffff81686b68 ffff880247f15b68
 ffff880247f15b58 ffffffff8106d47d 0000000000000000 ffffffff81cb06e0
 ffff8800396da438 ffff880238573188 ffff880003526900 ffff880247f15bb8
Call Trace:
 [<ffffffff81686b68>] dump_stack+0x45/0x56
 [<ffffffff8106d47d>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff8106d4ec>] warn_slowpath_fmt+0x4c/0x50
 [<ffffffff81230aee>] ? sysfs_get_dirent_ns+0x4e/0x70
 [<ffffffff81231db6>] sysfs_remove_group+0xc6/0xd0
 [<ffffffff8141dbc3>] dpm_sysfs_remove+0x43/0x50
 [<ffffffff81413915>] device_del+0x45/0x1c0
 [<ffffffff8143eb87>] scsi_target_reap_usercontext+0x27/0x40
 [<ffffffff810862c7>] execute_in_process_context+0x67/0x70
 [<ffffffff81440004>] scsi_target_reap+0xc4/0xf0
 [<ffffffff81441fd6>] scsi_device_dev_release_usercontext+0xe6/0x120
 [<ffffffff810862c7>] execute_in_process_context+0x67/0x70
 [<ffffffff81441eec>] scsi_device_dev_release+0x1c/0x20
 [<ffffffff813161f7>] kobject_cleanup+0x77/0x1b0
 [<ffffffff81413257>] put_device+0x17/0x20
 [<ffffffff81446b80>] scsi_disk_put+0x30/0x50
 [<ffffffff811f152c>] __blkdev_put+0x16c/0x1a0
 [<ffffffff811f1e6c>] blkdev_put+0x4c/0x120
 [<ffffffff811bb26d>] deactivate_locked_super+0x3d/0x60
 [<ffffffff811d752c>] mntput_no_expire+0xac/0x140
 [<ffffffff811c259e>] path_put+0x1e/0x30
 [<ffffffff811b7479>] SyS_chdir+0x89/0xc0

Connected my 16GB USB device (which is formatted as FAT) to a USB3 port:

WARNING: CPU: 0 PID: 5461 at fs/sysfs/group.c:214 sysfs_remove_group+0xc6/0xd0()
sysfs group ffffffff81cb06e0 not found for kobject 'target6:0:0'
Modules linked in: usb_storage fuse bnep bluetooth cfg80211 rfkill vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF) ip6t_rpfilter ip6t_REJECT xt_conntrack vboxdrv(OF) 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 vfat fat joydev snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm r8169 mii iTCO_wdt iTCO_vendor_support x86_pkg_temp_thermal snd_page_alloc snd_timer snd mei_me coretemp kvm_intel kvm soundcore shpchp lpc_ich mfd_core mei microcode serio_raw i2c_i801 dm_crypt nouveau mxm_wmi wmi i2c_algo_bit drm_kms_helper ttm crct10dif_pclmul crc32_pclmul crc32c_intel drm ghash_clmulni_intel i2c_core video
CPU: 0 PID: 5461 Comm: umount Tainted: GF          O 3.13.5-200.fc20.x86_64 #1
Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./B75M-D3H, BIOS F14 04/17/2013
 0000000000000009 ffff88010f359b70 ffffffff81686fdc ffff88010f359bb8
 ffff88010f359ba8 ffffffff8106d47d 0000000000000000 ffffffff81cb06e0
 ffff8800d1ee1438 ffff8800506ca188 ffff8800d8a08100 ffff88010f359c08
Call Trace:
 [<ffffffff81686fdc>] dump_stack+0x45/0x56
 [<ffffffff8106d47d>] warn_slowpath_common+0x7d/0xa0
 [<ffffffff8106d4ec>] warn_slowpath_fmt+0x4c/0x50
 [<ffffffff81230afe>] ? sysfs_get_dirent_ns+0x4e/0x70
 [<ffffffff81231dc6>] sysfs_remove_group+0xc6/0xd0
 [<ffffffff8141dc03>] dpm_sysfs_remove+0x43/0x50
 [<ffffffff81413955>] device_del+0x45/0x1c0
 [<ffffffff8143eb87>] scsi_target_reap_usercontext+0x27/0x40
 [<ffffffff81086297>] execute_in_process_context+0x67/0x70
 [<ffffffff81440004>] scsi_target_reap+0xc4/0xf0
 [<ffffffff81441fd6>] scsi_device_dev_release_usercontext+0xe6/0x120
 [<ffffffff81086297>] execute_in_process_context+0x67/0x70
 [<ffffffff81441eec>] scsi_device_dev_release+0x1c/0x20
 [<ffffffff81412fa2>] device_release+0x32/0xa0
 [<ffffffff813161c7>] kobject_cleanup+0x77/0x1b0
 [<ffffffff81316080>] kobject_put+0x30/0x60
 [<ffffffff81413297>] put_device+0x17/0x20
 [<ffffffff814346eb>] scsi_device_put+0x3b/0x50
 [<ffffffff81446b80>] scsi_disk_put+0x30/0x50
 [<ffffffff81446eb2>] sd_release+0x42/0xd0
 [<ffffffff811f14ac>] __blkdev_put+0x16c/0x1a0
 [<ffffffff811f144e>] __blkdev_put+0x10e/0x1a0
 [<ffffffff811f1dec>] blkdev_put+0x4c/0x120
 [<ffffffff811baf24>] kill_block_super+0x44/0x70
 [<ffffffff811bb1ed>] deactivate_locked_super+0x3d/0x60
 [<ffffffff811bb796>] deactivate_super+0x46/0x60
 [<ffffffff811d74ac>] mntput_no_expire+0xac/0x140
 [<ffffffff811d891e>] SyS_umount+0x8e/0x100
 [<ffffffff81695fa9>] system_call_fastpath+0x16/0x1b

Marking Bug 1066259 as duplicate of Bug 1030988.

Please revert if this is incorrect.

*** This bug has been marked as a duplicate of bug 1030988 ***