Public bug reported:
Got this stacktrace in dmesg when I disconnected my thunderbolt dock
from the usb-c port on my laptop.
[Fri Apr 10 10:00:46 2026] ------------[ cut here ]------------
[Fri Apr 10 10:00:46 2026] kernfs: can not remove 'typec', no directory
[Fri Apr 10 10:00:46 2026] WARNING: fs/kernfs/dir.c:1711 at
kernfs_remove_by_name_ns+0xd7/0xe0, CPU#13: kworker/13:2/534
[Fri Apr 10 10:00:46 2026] Modules linked in: hid_logitech_hidpp uhid nft_masq
zfs(PO) spl(O) rfcomm snd_seq_dummy snd_hrtimer vhost_vsock
vmw_vsock_virtio_transport_common vhost vhost_iotlb vsock xt_CHECKSUM
xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp nft_compat
x_tables nft_chain_nat nf_tables bridge stp llc rdma_ucm ib_uverbs rdma_cm
iw_cm ib_cm ib_core qrtr cmac algif_hash algif_skcipher af_alg bnep
snd_usb_audio snd_usbmidi_lib snd_ump snd_seq_midi snd_seq_midi_event uvcvideo
snd_seq videobuf2_vmalloc snd_rawmidi uvc videobuf2_memops snd_seq_device
videobuf2_v4l2 videobuf2_common r8153_ecm cdc_ether usbnet r8152 mii
openvswitch nsh nf_conncount nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
psample snd_soc_skl_hda_dsp snd_soc_intel_sof_board_helpers snd_sof_probes
snd_soc_intel_hda_dsp_common snd_hda_codec_intelhdmi snd_hda_codec_hdmi
snd_hda_codec_alc269 snd_hda_codec_realtek_lib snd_hda_scodec_component
snd_soc_dmic snd_hda_codec_generic snd_hda_intel snd_sof_pci_intel_tgl
snd_sof_pci_intel_cnl
[Fri Apr 10 10:00:46 2026] snd_sof_intel_hda_generic soundwire_intel
snd_sof_intel_hda_sdw_bpt binfmt_misc snd_sof_intel_hda_common snd_soc_hdac_hda
snd_sof_intel_hda_mlink snd_sof_intel_hda soundwire_cadence snd_sof_pci
snd_sof_xtensa_dsp btusb snd_sof btmtk snd_sof_utils btrtl
snd_soc_acpi_intel_match btbcm snd_soc_acpi_intel_sdca_quirks btintel
soundwire_generic_allocation bluetooth nls_iso8859_1 snd_soc_sdw_utils
snd_soc_acpi xe soundwire_bus snd_soc_sdca crc8 intel_uncore_frequency
snd_soc_avs intel_uncore_frequency_common snd_soc_hda_codec intel_tcc_cooling
snd_hda_ext_core x86_pkg_temp_thermal intel_powerclamp snd_hda_codec
drm_gpusvm_helper coretemp gpu_sched iwlmvm snd_hda_core drm_gpuvm
snd_intel_dspcfg drm_ttm_helper snd_intel_sdw_acpi drm_exec kvm_intel snd_hwdep
mac80211 snd_soc_core drm_suballoc_helper snd_compress kvm ac97_bus mei_hdcp
hid_sensor_custom_intel_hinge mei_pxp snd_pcm_dmaengine spi_nor
hid_sensor_trigger libarc4 mtd industrialio_triggered_buffer irqbypass iwlwifi
snd_pcm think_lmi i2c_i801 mei_me
[Fri Apr 10 10:00:46 2026] kfifo_buf rapl i2c_smbus hid_sensor_iio_common
spi_intel_pci intel_rapl_msr intel_cstate industrialio snd_ctl_led wmi_bmof
firmware_attributes_class cfg80211 snd_timer spi_intel i2c_mux mei
intel_skl_int3472_tps68470 mei_vsc_hw ov2740 tps68470_regulator thinkpad_acpi
clk_tps68470 v4l2_fwnode i915 nvram soc_button_array int3403_thermal v4l2_async
processor_thermal_device_pci processor_thermal_device intel_pmc_core videodev
intel_skl_int3472_discrete processor_thermal_wt_hint pmt_telemetry
platform_temperature_control mc intel_skl_int3472_common
processor_thermal_soc_slider drm_buddy pmt_discovery processor_thermal_rfim
int3400_thermal ttm intel_hid pmt_class processor_thermal_rapl acpi_thermal_rel
acpi_tad intel_pmc_ssram_telemetry acpi_pad intel_rapl_common
drm_display_helper processor_thermal_wt_req processor_thermal_power_floor cec
processor_thermal_mbox rc_core int340x_thermal_zone intel_vsec i2c_algo_bit
igen6_edac joydev input_leds mac_hid sch_fq_codel nvme_fabrics efi_pstore
nfnetlink btrfs
[Fri Apr 10 10:00:46 2026] libblake2b xor raid6_pq dm_crypt hid_sensor_custom
hid_sensor_hub intel_ishtp_hid usbhid ucsi_acpi typec_ucsi typec hid_multitouch
hid_generic nvme snd ghash_clmulni_intel psmouse nvme_core soundcore
i2c_hid_acpi video nvme_keyring intel_lpss_pci i2c_hid platform_profile
nvme_auth intel_lpss sparse_keymap hid hkdf pinctrl_tigerlake intel_ipu6 wmi
intel_ish_ipc idma64 thunderbolt intel_ishtp ipu_bridge serio_raw dm_mirror
dm_region_hash dm_log parport_pc ppdev lp parport msr dmi_sysfs autofs4
aesni_intel
[Fri Apr 10 10:00:46 2026] CPU: 13 UID: 0 PID: 534 Comm: kworker/13:2 Tainted:
P W O 7.0.0-12-generic #12-Ubuntu PREEMPT(lazy)
[Fri Apr 10 10:00:46 2026] Tainted: [P]=PROPRIETARY_MODULE, [W]=WARN,
[O]=OOT_MODULE
[Fri Apr 10 10:00:46 2026] Hardware name: LENOVO 21CC0093BR/21CC0093BR, BIOS
N3AET89W (1.54 ) 02/17/2026
[Fri Apr 10 10:00:46 2026] Workqueue: events ucsi_handle_connector_change
[typec_ucsi]
[Fri Apr 10 10:00:46 2026] RIP: 0010:kernfs_remove_by_name_ns+0xd7/0xe0
[Fri Apr 10 10:00:46 2026] Code: 10 5b 41 5c 5d 31 d2 31 f6 31 ff c3 cc cc cc
cc 4c 89 e7 e8 1b 2a b2 ff b8 fe ff ff ff eb de 0f 0b eb 97 48 8d 3d 29 30 51
02 <67> 48 0f b9 3a eb e7 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90
[Fri Apr 10 10:00:46 2026] RSP: 0018:ffffcd0ac0923d78 EFLAGS: 00010246
[Fri Apr 10 10:00:46 2026] RAX: 0000000000000000 RBX: ffff8c649fc87000 RCX:
0000000000000000
[Fri Apr 10 10:00:46 2026] RDX: 0000000000000000 RSI: ffffffffc086567e RDI:
ffffffff948f00a0
[Fri Apr 10 10:00:46 2026] RBP: ffffcd0ac0923d98 R08: 0000000000000000 R09:
0000000000000000
[Fri Apr 10 10:00:46 2026] R10: 0000000000000000 R11: 0000000000000000 R12:
ffff8c644c582c08
[Fri Apr 10 10:00:46 2026] R13: ffff8c6441a270b0 R14: 0000000000000000 R15:
ffff8c6443650300
[Fri Apr 10 10:00:46 2026] FS: 0000000000000000(0000)
GS:ffff8c67faa80000(0000) knlGS:0000000000000000
[Fri Apr 10 10:00:46 2026] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[Fri Apr 10 10:00:46 2026] CR2: 000079248e992594 CR3: 000000030e044006 CR4:
0000000000f72ef0
[Fri Apr 10 10:00:46 2026] PKRU: 55555554
[Fri Apr 10 10:00:46 2026] Call Trace:
[Fri Apr 10 10:00:46 2026] <TASK>
[Fri Apr 10 10:00:46 2026] sysfs_remove_link+0x19/0x50
[Fri Apr 10 10:00:46 2026] typec_unregister_partner+0xbf/0x120 [typec]
[Fri Apr 10 10:00:46 2026] ucsi_unregister_partner+0x120/0x170 [typec_ucsi]
[Fri Apr 10 10:00:46 2026] ucsi_handle_connector_change+0x39a/0x430
[typec_ucsi]
[Fri Apr 10 10:00:46 2026] process_one_work+0x1ac/0x3d0
[Fri Apr 10 10:00:46 2026] worker_thread+0x1b8/0x360
[Fri Apr 10 10:00:46 2026] ? _raw_spin_lock_irqsave+0xe/0x20
[Fri Apr 10 10:00:46 2026] ? __pfx_worker_thread+0x10/0x10
[Fri Apr 10 10:00:46 2026] kthread+0xf7/0x130
[Fri Apr 10 10:00:46 2026] ? __pfx_kthread+0x10/0x10
[Fri Apr 10 10:00:46 2026] ret_from_fork+0x195/0x2a0
[Fri Apr 10 10:00:46 2026] ? __pfx_kthread+0x10/0x10
[Fri Apr 10 10:00:46 2026] ? __pfx_kthread+0x10/0x10
[Fri Apr 10 10:00:46 2026] ret_from_fork_asm+0x1a/0x30
[Fri Apr 10 10:00:46 2026] </TASK>
[Fri Apr 10 10:00:46 2026] ---[ end trace 0000000000000000 ]---
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-12-generic 7.0.0-12.12
ProcVersionSignature: Ubuntu 7.0.0-12.12-generic 7.0.0-rc6
Uname: Linux 7.0.0-12-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.33.1-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: andreas 7380 F.... wireplumber
/dev/snd/controlC0: andreas 7363 F.... pipewire
andreas 7380 F.... wireplumber
/dev/snd/seq: andreas 7363 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 10 10:10:22 2026
InstallationDate: Installed on 2024-07-13 (636 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
IwDevWlp0s20f3Link: Not connected.
MachineType: LENOVO 21CC0093BR
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-12-generic
root=/dev/mapper/vg0-root ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: linux
UpgradeStatus: Upgraded to resolute on 2026-03-29 (12 days ago)
dmi.bios.date: 02/17/2026
dmi.bios.release: 1.54
dmi.bios.vendor: LENOVO
dmi.bios.version: N3AET89W (1.54 )
dmi.board.asset.tag: Not Available
dmi.board.name: 21CC0093BR
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76530 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.26
dmi.modalias:
dmi:bvnLENOVO:bvrN3AET89W(1.54):bd02/17/2026:br1.54:efr1.26:svnLENOVO:pn21CC0093BR:pvrThinkPadX1CarbonGen10:rvnLENOVO:rn21CC0093BR:rvrSDK0T76530WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21CC_BU_Think_FM_ThinkPadX1CarbonGen10:pfaThinkPadX1CarbonGen10:
dmi.product.family: ThinkPad X1 Carbon Gen 10
dmi.product.name: 21CC0093BR
dmi.product.sku: LENOVO_MT_21CC_BU_Think_FM_ThinkPad X1 Carbon Gen 10
dmi.product.version: ThinkPad X1 Carbon Gen 10
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2147924
Title:
kernfs: can not remove 'typec', no directory
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