Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: Oops: 0000 [#1] PREEMPT SMP PTI
CPU: 2 UID: 0 PID: 9912 Comm: kworker/2:2 Tainted: G        W          6.11.9-100.fc39.x86_64 #1
Tainted: [W]=WARN
Hardware name: LENOVO 20MAS17200/20MAS17200, BIOS N2CET34W (1.17 ) 11/21/2018
Workqueue: events ucsi_handle_connector_change [typec_ucsi]
RIP: 0010:strlen+0x4/0x30
Code: f7 75 ec 31 c0 c3 cc cc cc cc 48 89 f8 c3 cc cc cc cc 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <80> 3f 00 74 14 48 89 f8 48 83 c0 01 80 38 00 75 f7 48 29 f8 c3 cc
RSP: 0018:ffffae818235bdb0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000082000100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff91b44160fe78 R09: 00000000820001ff
R10: 00000000820001ff R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff91b45484f508 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff91bbc1b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000050842a002 CR4: 00000000003706f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ? __die+0x23/0x70
 ? page_fault_oops+0x173/0x5c0
 ? exc_page_fault+0x7e/0x180
 ? asm_exc_page_fault+0x26/0x30
 ? strlen+0x4/0x30
 kernfs_name_hash+0x12/0x90
 kernfs_find_ns+0x35/0xc0
 kernfs_remove_by_name_ns+0x4a/0xc0
 typec_unregister_partner+0x4c/0xe0 [typec]
 ucsi_unregister_partner+0x103/0x140 [typec_ucsi]
 ucsi_handle_connector_change+0x2d8/0x380 [typec_ucsi]
 process_one_work+0x17b/0x390
 worker_thread+0x251/0x360
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xcf/0x100
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x31/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in: uinput rfcomm snd_seq_dummy snd_hrtimer nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables nfnetlink qrtr bnep sunrpc snd_sof_pci_intel_cnl snd_sof_intel_hda_generic binfmt_misc elan_i2c soundwire_intel soundwire_cadence snd_sof_intel_hda_common vfat fat snd_sof_intel_hda_mlink snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils soundwire_generic_allocation soundwire_bus snd_soc_avs snd_soc_hda_codec snd_soc_skl iwlmvm snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp intel_uncore_frequency snd_soc_acpi_intel_match intel_uncore_frequency_common intel_tcc_cooling snd_soc_acpi x86_pkg_temp_thermal snd_soc_core intel_powerclamp mac80211 snd_hda_codec_realtek mei_wdt mei_hdcp mei_pxp snd_hda_codec_generic snd_compress coretemp snd_hda_codec_hdmi snd_hda_scodec_component
 ac97_bus ee1004 spi_nor snd_pcm_dmaengine kvm_intel iTCO_wdt uvcvideo intel_pmc_bxt snd_hda_intel uvc mtd snd_intel_dspcfg videobuf2_vmalloc iTCO_vendor_support snd_intel_sdw_acpi videobuf2_memops libarc4 intel_rapl_msr snd_hda_codec videobuf2_v4l2 kvm videobuf2_common btusb btrtl snd_hda_core btintel iwlwifi rapl snd_hwdep btbcm videodev btmtk snd_seq processor_thermal_device_pci_legacy intel_cstate snd_seq_device think_lmi processor_thermal_device processor_thermal_wt_hint processor_thermal_rfim intel_uncore pcspkr firmware_attributes_class intel_wmi_thunderbolt snd_ctl_led thunderbolt wmi_bmof bluetooth mc cfg80211 thinkpad_acpi i2c_i801 processor_thermal_rapl snd_pcm mei_me spi_intel_pci sparse_keymap spi_intel i2c_smbus intel_rapl_common idma64 mei platform_profile processor_thermal_wt_req snd_timer processor_thermal_power_floor rfkill processor_thermal_mbox intel_soc_dts_iosf intel_pch_thermal snd soundcore int3403_thermal int340x_thermal_zone intel_pmc_core intel_vsec int3400_thermal
 acpi_thermal_rel acpi_pad pmt_telemetry pmt_class joydev loop zram nouveau rtsx_pci_sdmmc crct10dif_pclmul drm_ttm_helper crc32_pclmul crc32c_intel ttm polyval_clmulni mmc_core polyval_generic gpu_sched i2c_algo_bit drm_gpuvm drm_exec ghash_clmulni_intel mxm_wmi drm_display_helper sha512_ssse3 nvme sha256_ssse3 ucsi_acpi e1000e sha1_ssse3 nvme_core typec_ucsi rtsx_pci cec nvme_auth typec video wmi pinctrl_cannonlake serio_raw ip6_tables ip_tables fuse
CR2: 0000000000000000