WARNING: CPU: 0 PID: 5517 at /build/buildd/linux-3.13.0/fs/sysfs/group.c:214 sysfs_remove_group+0xc6/0xd0()

[Cristian Aravena Romero]

[Test Case]
Insert USB drive, check dmesg for warning.

[Fix]
https://git.kernel.org/cgit/linux/kernel/git/jejb/scsi.git/commit/?h=for-next&id=e63ed0d7a98014fdfc2cfeb3f6dada313dcabb59
https://git.kernel.org/cgit/linux/kernel/git/jejb/scsi.git/commit/?h=for-next&id=f2495e228fce9f9cec84367547813cbb0d6db15a

From upstream scsi git repo.

--

[ 5425.167885] usb 3-2: USB disconnect, device number 2
[ 7292.553234] usb 3-1: USB disconnect, device number 10
[ 7292.623563] FAT-fs (sdc1): unable to read boot sector to mark fs as dirty
[ 7292.623613] ------------[ cut here ]------------
[ 7292.623624] WARNING: CPU: 0 PID: 5517 at /build/buildd/linux-3.13.0/fs/sysfs/group.c:214 sysfs_remove_group+0xc6/0xd0()
[ 7292.623626] sysfs group ffffffff81cabb00 not found for kobject 'target6:0:0'
[ 7292.623628] Modules linked in: nls_iso8859_1 nls_utf8 isofs usb_storage ctr ccm pci_stub vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF) vboxdrv(OF) parport_pc ppdev rfcomm bnep joydev intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel cryptd snd_hda_codec_hdmi snd_hda_codec_realtek btusb bluetooth samsung_laptop snd_hda_intel snd_hda_codec snd_hwdep snd_pcm microcode snd_page_alloc snd_seq_midi snd_seq_midi_event snd_rawmidi uvcvideo videobuf2_vmalloc snd_seq videobuf2_memops videobuf2_core arc4 snd_seq_device videodev snd_timer iwldvm snd psmouse mac80211 serio_raw iwlwifi cfg80211 lpc_ich soundcore mei_me mei i915 wmi video drm_kms_helper mac_hid drm i2c_algo_bit lp parport hid_generic usbhid hid btrfs xor raid6_pq libcrc32c ahci r8169 libahci mii
[ 7292.623708] CPU: 0 PID: 5517 Comm: umount Tainted: GF O 3.13.0-11-generic #31-Ubuntu
[ 7292.623711] Hardware name: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C/SAMSUNG_NP1234567890, BIOS P14AAJ 04/15/2013
[ 7292.623713] 0000000000000009 ffff880025bf1b70 ffffffff817163b5 ffff880025bf1bb8
[ 7292.623718] ffff880025bf1ba8 ffffffff8106450d 0000000000000000 ffffffff81cabb00
[ 7292.623723] ffff8800c0191438 ffff880053d83188 ffff8800ad531800 ffff880025bf1c08
[ 7292.623727] Call Trace:
[ 7292.623735] [<ffffffff817163b5>] dump_stack+0x45/0x56
[ 7292.623741] [<ffffffff8106450d>] warn_slowpath_common+0x7d/0xa0
[ 7292.623745] [<ffffffff8106457c>] warn_slowpath_fmt+0x4c/0x50
[ 7292.623751] [<ffffffff8122edfe>] ? sysfs_get_dirent_ns+0x4e/0x70
[ 7292.623756] [<ffffffff812300d6>] sysfs_remove_group+0xc6/0xd0
[ 7292.623761] [<ffffffff81496543>] dpm_sysfs_remove+0x43/0x50
[ 7292.623766] [<ffffffff8148bf75>] device_del+0x45/0x1c0
[ 7292.623772] [<ffffffff814ddd17>] scsi_target_reap_usercontext+0x27/0x40
[ 7292.623777] [<ffffffff8107ed27>] execute_in_process_context+0x67/0x70
[ 7292.623782] [<ffffffff814df6e4>] scsi_target_reap+0xc4/0xf0
[ 7292.623786] [<ffffffff814e12d8>] scsi_device_dev_release_usercontext+0x188/0x1c0
[ 7292.623790] [<ffffffff8107ed27>] execute_in_process_context+0x67/0x70
[ 7292.623794] [<ffffffff814e114c>] scsi_device_dev_release+0x1c/0x20
[ 7292.623798] [<ffffffff8148b5c2>] device_release+0x32/0xa0
[ 7292.623802] [<ffffffff81359f57>] kobject_cleanup+0x77/0x1b0
[ 7292.623805] [<ffffffff81359df8>] kobject_put+0x28/0x60
[ 7292.623809] [<ffffffff8148b8b7>] put_device+0x17/0x20
[ 7292.623813] [<ffffffff814d36cb>] scsi_device_put+0x3b/0x50
[ 7292.623819] [<ffffffff814e8940>] scsi_disk_put+0x30/0x50
[ 7292.623823] [<ffffffff814e8c72>] sd_release+0x42/0xd0
[ 7292.623827] [<ffffffff811f15ac>] __blkdev_put+0x16c/0x1a0
[ 7292.623831] [<ffffffff811f154e>] __blkdev_put+0x10e/0x1a0
[ 7292.623834] [<ffffffff811f1efe>] blkdev_put+0x4e/0x140
[ 7292.623839] [<ffffffff811b9cb4>] kill_block_super+0x44/0x70
[ 7292.623843] [<ffffffff811b9f7d>] deactivate_locked_super+0x3d/0x60
[ 7292.623847] [<ffffffff811ba536>] deactivate_super+0x46/0x60
[ 7292.623853] [<ffffffff811d71e6>] mntput_no_expire+0xd6/0x170
[ 7292.623856] [<ffffffff811d86ce>] SyS_umount+0x8e/0x100
[ 7292.623861] [<ffffffff81726fbf>] tracesys+0xe1/0xe6
[ 7292.623864] ---[ end trace e80cad625b577b20 ]---

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-11-generic 3.13.0-11.31
ProcVersionSignature: Ubuntu 3.13.0-11.31-generic 3.13.3
Uname: Linux 3.13.0-11-generic x86_64
ApportVersion: 2.13.2-0ubuntu5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: caravena 2174 F.... pulseaudio
CRDA:
 country CL:
  (2402 - 2482 @ 40), (N/A, 20)
  (5170 - 5250 @ 40), (N/A, 20)
  (5250 - 5330 @ 40), (N/A, 20), DFS
  (5735 - 5835 @ 40), (N/A, 20)
CurrentDesktop: GNOME
Date: Sat Feb 22 21:46:15 2014
HibernationDevice: RESUME=UUID=360bd2d2-4f44-4311-86d6-4781ac81ee87
InstallationDate: Installed on 2014-01-23 (30 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140122)
MachineType: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.13.0-11-generic root=UUID=0c67119c-ddae-476a-b510-142ec598f691 ro rootflags=subvol=@ quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-11-generic N/A
 linux-backports-modules-3.13.0-11-generic N/A
 linux-firmware 1.125
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2013
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: P14AAJ
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: SAMSUNG_NP1234567890
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP14AAJ:bd04/15/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn530U3C/530U4C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnSAMSUNG_NP1234567890:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
dmi.product.name: 530U3C/530U4C
dmi.product.version: 0.1
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.13 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14-rc4-trusty/

[Chris J Arges (arges)]

Joe, I tested with the latest mainline kernel as of 3/25 (b098d6726bbfb94c06d6e1097466187afddae61f) and can still reproduce this exact issue. It looks like its an upstream issue as well:
https://bugzilla.kernel.org/show_bug.cgi?id=71021
https://bugzilla.kernel.org/show_bug.cgi?id=69441
http://www.spinics.net/lists/linux-usb/msg102568.html

I'll check if the following patches solve the issue as they aren't mainline yet:
 http://marc.info/?l=linux-scsi&m=139031645920152&w=2
 http://marc.info/?l=linux-scsi&m=139031650720168&w=2

[Chris J Arges (arges)]

https://git.kernel.org/cgit/linux/kernel/git/jejb/scsi.git/commit/?h=for-next&id=e63ed0d7a98014fdfc2cfeb3f6dada313dcabb59
https://git.kernel.org/cgit/linux/kernel/git/jejb/scsi.git/commit/?h=for-next&id=f2495e228fce9f9cec84367547813cbb0d6db15a

[Chris J Arges (arges)]

Test build here:
http://people.canonical.com/~arges/lp1283604/
So far it fixes things for me.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 3.13.0-20.42

---------------
linux (3.13.0-20.42) trusty; urgency=low

  [ Adam Conrad ]

  * [Packaging] Set bootloader and loader on ppc64el to grub

  [ Andy Whitcroft ]

  * rebase to v3.13.7
  * [Config] updateconfigs following rebase to v3.13.7
  * cloud-tools -- pull in init scripts for Hyper-V daemons
  * cloud-tools -- detect Hyper-V VM to avoid starting
  * cloud-tools -- update IF_NAME to DEVICE in hv_* scripts
    - LP: #1295401
  * [Config] cloud-tools -- ensure we force older hv-kvp-daemon-init off
  * [Config] fix up Breaks/Replaces on linux-cloud-tools-common to fix upgrades

  [ Emmanuel Grumbach ]

  * SAUCE: (no-up) iwlwifi: mvm: disable uAPSD due to bugs in the firmware

  [ James Bottomley ]

  * SAUCE: (no-up) fix our current target reap infrastructure
    - LP: #1283604
  * SAUCE: (no-up) dual scan thread bug fix
    - LP: #1283604

  [ K. Y. Srinivasan ]

  * SAUCE: (no-up) Tools: hv: vssdaemon: Ignore VFAT mounts during the
    Freeze operation
    - LP: #1298192

  [ Paolo Pisati ]

  * [Config] disable HW_RANDOM_EXYNOS, USB_DWC3_EXYNOS,
    PHY_EXYNOS_MIPI_VIDEO
    - LP: #1294353
  * [Config] armhf: generic: AHCI_IMX=y, SERIAL_FSL_LPUART=m
    - LP: #1294951
  * [Config] armhf: generic: MFD_TI_AM335X_TSCADC and USB_DWC3_OMAP = m
    - LP: #1294962

  [ Tim Gardner ]

  * Release Tracking Bug
    - LP: #1298585
  * [Config] ignore.modules
  * SAUCE: i2c-cpm: Add missing includes for powerpc
  * [Config] CONFIG_ABX500_CORE=y for ppc64el
  * [Config] CONFIG_ALX=m for powerpc
  * [Config] CONFIG_ACENIC_OMIT_TIGON_I=n for ppc64el
  * [Config] CONFIG_ACORN_PARTITION_*=n for ppc64el
  * [Config] CONFIG_ANDROID=n for powerpc
  * [Config] CONFIG_ASYNC_RAID6_TEST=m for ppc64el
  * [Config] CONFIG_BIG_KEYS=y for ppc64el
  * [Config] CONFIG_BLK_DEV_INTEGRITY=y for ppc64el
  * [Config] CONFIG_BSD_PROCESS_ACCT=y for ppc64el
  * [Config] CONFIG_BLK_DEV_SR_VENDOR=n for ppc64el
  * [Config] CONFIG_CFG80211=m for ppc64el
  * [Config] CONFIG_CHARGER_BQ24190=m for powerpc
  * [Config] CONFIG_CHARGER_BQ24735=m for powerpc
  * [Config] CONFIG_EXPERT=y for ppc64el
  * [Config] CONFIG_ATA_SFF=y on ppc64el
  * [Config] CONFIG_ATA_GENERIC=y for ppc64el, powerpc
  * [Config] CONFIG_CHR_DEV_ST=m for ppc64el
  * [Config] CONFIG_CHECKPOINT_RESTORE=y for ppc64el
  * [Config] CONFIG_CHELSIO_T1_1G=y for ppc64el
  * [Config] CONFIG_CHR_DEV_OSST=m for ppc64el
  * [Config] CONFIG_CHR_DEV_SCH=m for ppc64el
  * [Config] CONFIG_CPU_FREQ_STAT=y for powerpc
  * [Config] CONFIG_DDR=y for ppc64el
  * [Config] CONFIG_DEBUG_BUGVERBOSE=y for powerpc
  * [Config] CONFIG_EXT4_USE_FOR_EXT23=y for powerpc, ppc64el
  * [Config] CONFIG_E100=m, CONFIG_E1000=m, CONFIG_E1000E=m for ppc64el
  * [Config] CONFIG_EZX_PCAP=n for all arches
  * [Config] CONFIG_DYNAMIC_DEBUG=y for powerpc
  * [Config] CONFIG_ENABLE_MUST_CHECK=n for ppc64el
  * [Config] CONFIG_ENABLE_WARN_DEPRECATED=n for ppc64el
  * [Config] CONFIG_FB_3DFX=m for all arches
  * [Config] CONFIG_FB_MATROX=m for ppc64el
  * [Config] CONFIG_FB_RADEON=m for ppc64el
  * [Config] CONFIG_FB_SAVAGE_I2C=y for all arches
  * [Config] CONFIG_FIREWIRE=m for ppc64el
  * [Config] CO...

[Vincas Dargis (talkless)]

I discovered similar issue when removing Live! Cam Connect HD VF0750 webcam.

Kubuntu 16.04 amd64
Linux 4.4.0-53.74
Asus N551JM

Attached trace. You can see camera being connected and disconnected, resulting in five tracebacks.

[Vincas Dargis (talkless)]

It's the same using 4.8 from linux-image-4.8.0-30-generic package.

[Daniel Axtens (daxtens)]

I have also hit this with a webcam. I think you should probably file a new bug for it though.

There is some discussion on LKML: https://lkml.org/lkml/2016/12/8/657 - looks like a uvc issue.