When connecting a USB device I get the following error:
[ 3595.453994] ------------[ cut here ]------------ [ 3595.454008] WARNING: CPU: 2 PID: 7193 at /build/buildd/linux-3.13.0/fs/sysfs/group.c:214 sysfs_remove_group+0xc6/0xd0() [ 3595.454011] sysfs group ffffffff81cab340 not found for kobject 'target6:0:0' [ 3595.454013] Modules linked in: nls_iso8859_1 xt_conntrack ipt_REJECT ip6table_filter ip6_tables ebtable_nat ebtables overlayfs xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables ctr ccm rfcomm bnep binfmt_misc joydev uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev arc4 iwldvm mac80211 dm_multipath scsi_dh snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_pcm kvm snd_page_alloc thinkpad_acpi nvram btusb bluetooth psmouse snd_seq_midi snd_seq_midi_event serio_raw snd_rawmidi iwlwifi cfg80211 snd_seq snd_seq_device snd_timer lpc_ich snd soundcore mac_hid mei_me mei lp parport dm_crypt usb_storage crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd i915 ahci libahci sdhci_pci sdhci e1000e i2c_algo_bit drm_kms_helper ptp drm pps_core wmi video [ 3595.454106] CPU: 2 PID: 7193 Comm: umount Not tainted 3.13.0-19-generic #39-Ubuntu [ 3595.454108] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET55WW (1.25 ) 11/01/2011 [ 3595.454111] 0000000000000009 ffff8802e0587b70 ffffffff81711075 ffff8802e0587bb8 [ 3595.454116] ffff8802e0587ba8 ffffffff810662cd 0000000000000000 ffffffff81cab340 [ 3595.454120] ffff88030689a838 ffff88030c8aa188 ffff880035f8e000 ffff8802e0587c08 [ 3595.454124] Call Trace: [ 3595.454133] [<ffffffff81711075>] dump_stack+0x45/0x56 [ 3595.454138] [<ffffffff810662cd>] warn_slowpath_common+0x7d/0xa0 [ 3595.454142] [<ffffffff8106633c>] warn_slowpath_fmt+0x4c/0x50 [ 3595.454149] [<ffffffff8122ff0e>] ? sysfs_get_dirent_ns+0x4e/0x70 [ 3595.454153] [<ffffffff812311f6>] sysfs_remove_group+0xc6/0xd0 [ 3595.454159] [<ffffffff81490b03>] dpm_sysfs_remove+0x43/0x50 [ 3595.454164] [<ffffffff81486535>] device_del+0x45/0x1c0 [ 3595.454171] [<ffffffff814d8337>] scsi_target_reap_usercontext+0x27/0x40 [ 3595.454177] [<ffffffff81080ab7>] execute_in_process_context+0x67/0x70 [ 3595.454181] [<ffffffff814d9d04>] scsi_target_reap+0xc4/0xf0 [ 3595.454187] [<ffffffff814db8f8>] scsi_device_dev_release_usercontext+0x188/0x1c0 [ 3595.454191] [<ffffffff81080ab7>] execute_in_process_context+0x67/0x70 [ 3595.454196] [<ffffffff814db76c>] scsi_device_dev_release+0x1c/0x20 [ 3595.454200] [<ffffffff81485b82>] device_release+0x32/0xa0 [ 3595.454205] [<ffffffff8135b447>] kobject_cleanup+0x77/0x1b0 [ 3595.454209] [<ffffffff8135b2e8>] kobject_put+0x28/0x60 [ 3595.454215] [<ffffffff81485e77>] put_device+0x17/0x20 [ 3595.454219] [<ffffffff814cdcbb>] scsi_device_put+0x3b/0x50 [ 3595.454224] [<ffffffff814e2f60>] scsi_disk_put+0x30/0x50 [ 3595.454228] [<ffffffff814e3292>] sd_release+0x42/0xd0 [ 3595.454233] [<ffffffff811f25ec>] __blkdev_put+0x16c/0x1a0 [ 3595.454237] [<ffffffff811f258e>] __blkdev_put+0x10e/0x1a0 [ 3595.454241] [<ffffffff811f2f3e>] blkdev_put+0x4e/0x140 [ 3595.454246] [<ffffffff811badd4>] kill_block_super+0x44/0x70 [ 3595.454250] [<ffffffff811bb09d>] deactivate_locked_super+0x3d/0x60 [ 3595.454255] [<ffffffff811bb656>] deactivate_super+0x46/0x60 [ 3595.454259] [<ffffffff811d82c6>] mntput_no_expire+0xd6/0x170 [ 3595.454263] [<ffffffff811d97ae>] SyS_umount+0x8e/0x100 [ 3595.454268] [<ffffffff81721c7f>] tracesys+0xe1/0xe6 [ 3595.454271] ---[ end trace 5d2cb0f66a6a6ae8 ]---
ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-19-generic 3.13.0-19.39 ProcVersionSignature: Ubuntu 3.13.0-19.39-generic 3.13.6 Uname: Linux 3.13.0-19-generic x86_64 ApportVersion: 2.13.3-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: arges 3448 F.... pulseaudio CurrentDesktop: Unity Date: Tue Mar 25 09:01:46 2014 HibernationDevice: RESUME=UUID=a7b27ee5-508a-4f85-ba29-7630f0d2c8a5 InstallationDate: Installed on 2013-09-12 (193 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130912) MachineType: LENOVO 42872WU ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-19-generic root=UUID=ebd9375f-99c8-45c6-bd4b-cc2a60f99efb ro quiet splash crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-19-generic N/A linux-backports-modules-3.13.0-19-generic N/A linux-firmware 1.126 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/01/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8DET55WW (1.25 ) dmi.board.asset.tag: Not Available dmi.board.name: 42872WU dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr8DET55WW(1.25):bd11/01/2011:svnLENOVO:pn42872WU:pvrThinkPadX220:rvnLENOVO:rn42872WU:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 42872WU dmi.product.version: ThinkPad X220 dmi.sys.vendor: LENOVO
When connecting a USB device I get the following error:
[ 3595.453994] ------------[ cut here ]------------ buildd/ linux-3. 13.0/fs/ sysfs/group. c:214 sysfs_remove_ group+0xc6/ 0xd0() codec_conexant snd_hda_intel snd_hda_codec snd_hwdep intel_rapl x86_pkg_ temp_thermal intel_powerclamp coretemp kvm_intel snd_pcm kvm snd_page_alloc thinkpad_acpi nvram btusb bluetooth psmouse snd_seq_midi snd_seq_midi_event serio_raw snd_rawmidi iwlwifi cfg80211 snd_seq snd_seq_device snd_timer lpc_ich snd soundcore mac_hid mei_me mei lp parport dm_crypt usb_storage crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd i915 ahci libahci sdhci_pci sdhci e1000e i2c_algo_bit drm_kms_helper ptp drm pps_core wmi video 075>] dump_stack+ 0x45/0x56 2cd>] warn_slowpath_ common+ 0x7d/0xa0 33c>] warn_slowpath_ fmt+0x4c/ 0x50 f0e>] ? sysfs_get_ dirent_ ns+0x4e/ 0x70 1f6>] sysfs_remove_ group+0xc6/ 0xd0 b03>] dpm_sysfs_ remove+ 0x43/0x50 535>] device_ del+0x45/ 0x1c0 337>] scsi_target_ reap_usercontex t+0x27/ 0x40 ab7>] execute_ in_process_ context+ 0x67/0x70 d04>] scsi_target_ reap+0xc4/ 0xf0 8f8>] scsi_device_ dev_release_ usercontext+ 0x188/0x1c0 ab7>] execute_ in_process_ context+ 0x67/0x70 76c>] scsi_device_ dev_release+ 0x1c/0x20 b82>] device_ release+ 0x32/0xa0 447>] kobject_ cleanup+ 0x77/0x1b0 2e8>] kobject_ put+0x28/ 0x60 e77>] put_device+ 0x17/0x20 cbb>] scsi_device_ put+0x3b/ 0x50 f60>] scsi_disk_ put+0x30/ 0x50 292>] sd_release+ 0x42/0xd0 5ec>] __blkdev_ put+0x16c/ 0x1a0 58e>] __blkdev_ put+0x10e/ 0x1a0 f3e>] blkdev_ put+0x4e/ 0x140 dd4>] kill_block_ super+0x44/ 0x70 09d>] deactivate_ locked_ super+0x3d/ 0x60 656>] deactivate_ super+0x46/ 0x60 2c6>] mntput_ no_expire+ 0xd6/0x170 7ae>] SyS_umount+ 0x8e/0x100 c7f>] tracesys+0xe1/0xe6
[ 3595.454008] WARNING: CPU: 2 PID: 7193 at /build/
[ 3595.454011] sysfs group ffffffff81cab340 not found for kobject 'target6:0:0'
[ 3595.454013] Modules linked in: nls_iso8859_1 xt_conntrack ipt_REJECT ip6table_filter ip6_tables ebtable_nat ebtables overlayfs xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables ctr ccm rfcomm bnep binfmt_misc joydev uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev arc4 iwldvm mac80211 dm_multipath scsi_dh snd_hda_codec_hdmi snd_hda_
[ 3595.454106] CPU: 2 PID: 7193 Comm: umount Not tainted 3.13.0-19-generic #39-Ubuntu
[ 3595.454108] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET55WW (1.25 ) 11/01/2011
[ 3595.454111] 0000000000000009 ffff8802e0587b70 ffffffff81711075 ffff8802e0587bb8
[ 3595.454116] ffff8802e0587ba8 ffffffff810662cd 0000000000000000 ffffffff81cab340
[ 3595.454120] ffff88030689a838 ffff88030c8aa188 ffff880035f8e000 ffff8802e0587c08
[ 3595.454124] Call Trace:
[ 3595.454133] [<ffffffff81711
[ 3595.454138] [<ffffffff81066
[ 3595.454142] [<ffffffff81066
[ 3595.454149] [<ffffffff8122f
[ 3595.454153] [<ffffffff81231
[ 3595.454159] [<ffffffff81490
[ 3595.454164] [<ffffffff81486
[ 3595.454171] [<ffffffff814d8
[ 3595.454177] [<ffffffff81080
[ 3595.454181] [<ffffffff814d9
[ 3595.454187] [<ffffffff814db
[ 3595.454191] [<ffffffff81080
[ 3595.454196] [<ffffffff814db
[ 3595.454200] [<ffffffff81485
[ 3595.454205] [<ffffffff8135b
[ 3595.454209] [<ffffffff8135b
[ 3595.454215] [<ffffffff81485
[ 3595.454219] [<ffffffff814cd
[ 3595.454224] [<ffffffff814e2
[ 3595.454228] [<ffffffff814e3
[ 3595.454233] [<ffffffff811f2
[ 3595.454237] [<ffffffff811f2
[ 3595.454241] [<ffffffff811f2
[ 3595.454246] [<ffffffff811ba
[ 3595.454250] [<ffffffff811bb
[ 3595.454255] [<ffffffff811bb
[ 3595.454259] [<ffffffff811d8
[ 3595.454263] [<ffffffff811d9
[ 3595.454268] [<ffffffff81721
[ 3595.454271] ---[ end trace 5d2cb0f66a6a6ae8 ]---
ProblemType: Bug 3.13.0- 19-generic 3.13.0-19.39 ature: Ubuntu 3.13.0- 19.39-generic 3.13.6 controlC0: arges 3448 F.... pulseaudio UUID=a7b27ee5- 508a-4f85- ba29-7630f0d2c8 a5 /vmlinuz- 3.13.0- 19-generic root=UUID= ebd9375f- 99c8-45c6- bd4b-cc2a60f99e fb ro quiet splash crashkernel= 384M-:128M crashkernel= 384M-:128M crashkernel= 384M-:128M crashkernel= 384M-:128M vt.handoff=7 ersions: restricted- modules- 3.13.0- 19-generic N/A backports- modules- 3.13.0- 19-generic N/A asset.tag: Not Available asset.tag: No Asset Information version: Not Available bvr8DET55WW( 1.25):bd11/ 01/2011: svnLENOVO: pn42872WU: pvrThinkPadX220 :rvnLENOVO: rn42872WU: rvrNotAvailable :cvnLENOVO: ct10:cvrNotAvai lable: version: ThinkPad X220
DistroRelease: Ubuntu 14.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.13.0-19-generic x86_64
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CurrentDesktop: Unity
Date: Tue Mar 25 09:01:46 2014
HibernationDevice: RESUME=
InstallationDate: Installed on 2013-09-12 (193 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130912)
MachineType: LENOVO 42872WU
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.126
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/01/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET55WW (1.25 )
dmi.board.
dmi.board.name: 42872WU
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 42872WU
dmi.product.
dmi.sys.vendor: LENOVO