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 NOPTI
CPU: 3 UID: 0 PID: 117839 Comm: kworker/u32:31 Tainted: G        W          6.14.5-200.fc41.x86_64 #1
Tainted: [W]=WARN
Hardware name: LENOVO 20QES1NX0Y/20QES1NX0Y, BIOS N2HET80W (1.63 ) 10/31/2024
Workqueue: USBC000:00-con1 ucsi_poll_worker [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 18 48 89 f8 0f 1f 40 00 48 83 c0 01 80 38 00 75 f7 48
RSP: 0018:ffffa5c3dc1d3d78 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000082000100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff987cbddb8e00 R09: 0000000082000190
R10: 0000000082000190 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff987a0040dcc0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff987d2c380000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000002b82c001 CR4: 00000000003726f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kernfs_name_hash+0x12/0xb0
 kernfs_find_ns+0x37/0xc0
 kernfs_remove_by_name_ns+0x4a/0xc0
 typec_unregister_partner+0x5d/0x110 [typec]
 ucsi_unregister_partner+0x103/0x140 [typec_ucsi]
 ucsi_check_connection+0xb0/0xc0 [typec_ucsi]
 ucsi_poll_worker+0x3a/0x110 [typec_ucsi]
 process_one_work+0x176/0x330
 worker_thread+0x252/0x390
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xec/0x230
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x31/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in: overlay wireguard curve25519_x86_64 libcurve25519_generic ip6_udp_tunnel udp_tunnel dummy hid_logitech_hidpp uhid cdc_acm typec_displayport uinput rfcomm snd_seq_dummy snd_hrtimer tun 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 qrtr sunrpc bnep btusb uvcvideo btrtl btintel uvc videobuf2_vmalloc btbcm videobuf2_memops btmtk videobuf2_v4l2 videobuf2_common bluetooth videodev snd_soc_skl_hda_dsp snd_soc_intel_sof_board_helpers snd_sof_probes snd_soc_intel_hda_dsp_common mc snd_hda_codec_realtek snd_hda_codec_generic snd_hda_scodec_component snd_soc_dmic snd_sof_pci_intel_cnl snd_sof_intel_hda_generic soundwire_intel soundwire_cadence snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_intel_hda_mlink snd_sof_intel_hda snd_hda_codec_hdmi snd_sof_pci iwlmvm snd_sof_xtensa_dsp snd_sof binfmt_misc
 snd_sof_utils snd_soc_acpi_intel_match snd_soc_acpi_intel_sdca_quirks soundwire_generic_allocation vfat snd_soc_acpi fat soundwire_bus intel_uncore_frequency mac80211 intel_uncore_frequency_common snd_soc_sdca intel_pmc_core_pltdrv intel_pmc_core pmt_telemetry snd_soc_avs pmt_class intel_vsec intel_tcc_cooling snd_soc_hda_codec x86_pkg_temp_thermal intel_powerclamp snd_hda_ext_core coretemp snd_soc_core kvm_intel snd_compress ac97_bus snd_pcm_dmaengine libarc4 snd_hda_intel kvm snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec snd_hda_core snd_hwdep mei_pxp spi_nor snd_seq mei_hdcp mei_wdt iwlwifi processor_thermal_device_pci_legacy iTCO_wdt irqbypass processor_thermal_device mtd think_lmi snd_seq_device processor_thermal_wt_hint rapl mei_me intel_pmc_bxt processor_thermal_rfim iTCO_vendor_support processor_thermal_rapl intel_cstate spi_intel_pci intel_rapl_msr intel_uncore snd_ctl_led cfg80211 pcspkr intel_wmi_thunderbolt wmi_bmof e1000e firmware_attributes_class snd_pcm thinkpad_acpi spi_intel
 intel_rapl_common processor_thermal_wt_req i2c_i801 sparse_keymap mei platform_profile snd_timer processor_thermal_power_floor i2c_smbus intel_pch_thermal processor_thermal_mbox idma64 snd rfkill intel_soc_dts_iosf soundcore int3403_thermal int340x_thermal_zone int3400_thermal acpi_thermal_rel joydev acpi_pad acpi_tad loop nfnetlink zram lz4hc_compress lz4_compress dm_crypt i915 polyval_clmulni i2c_algo_bit polyval_generic drm_buddy ghash_clmulni_intel nvme ttm sha512_ssse3 sha256_ssse3 nvme_core sha1_ssse3 i2c_hid_acpi nvme_auth i2c_hid drm_display_helper ucsi_acpi typec_ucsi video typec cec pinctrl_cannonlake wmi serio_raw hid_multitouch fuse
CR2: 0000000000000000

WARNING: CPU: 3 PID: 428270 at drivers/usb/typec/class.c:311 typec_altmode_update_active+0xfb/0x110 [typec]
Modules linked in: hid_pl ff_memless uas usb_storage typec_displayport wacom cdc_mbim cdc_wdm snd_usb_audio cdc_ncm cdc_ether snd_usbmidi_lib usbnet snd_ump mii snd_rawmidi uinput snd_seq_dummy rfcomm snd_hrtimer xt_conntrack xt_MASQUERADE bridge stp llc xt_set xt_addrtype nft_compat nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet overlay 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 nvidia_drm(PO) qrtr nvidia_modeset(PO) nvidia_uvm(PO) bnep sunrpc binfmt_misc vfat fat nvidia(PO) snd_sof_pci_intel_cnl snd_sof_intel_hda_generic soundwire_intel soundwire_cadence snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_intel_hda_mlink snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils snd_soc_acpi_intel_match snd_soc_acpi_intel_sdca_quirks soundwire_generic_allocation snd_soc_acpi snd_hda_codec_hdmi soundwire_bus snd_soc_sdca snd_soc_avs
 intel_uncore_frequency intel_uncore_frequency_common snd_ctl_led snd_soc_hda_codec snd_hda_codec_realtek snd_hda_ext_core snd_soc_core intel_tcc_cooling snd_hda_codec_generic iwlmvm x86_pkg_temp_thermal snd_hda_scodec_component snd_compress intel_powerclamp ac97_bus coretemp snd_pcm_dmaengine kvm_intel snd_hda_intel snd_intel_dspcfg mac80211 snd_intel_sdw_acpi snd_hda_codec kvm libarc4 dell_pc snd_hda_core processor_thermal_device_pci_legacy platform_profile snd_hwdep processor_thermal_device btusb processor_thermal_wt_hint snd_seq btrtl irqbypass uvcvideo processor_thermal_rfim btintel dell_rbtn uvc snd_seq_device rapl intel_rapl_msr processor_thermal_rapl iwlwifi btbcm videobuf2_vmalloc dell_laptop iTCO_wdt snd_pcm intel_cstate spi_nor intel_rapl_common btmtk videobuf2_memops dell_wmi videobuf2_v4l2 intel_pmc_bxt mei_pxp mei_wdt mei_hdcp mtd processor_thermal_wt_req ee1004 iTCO_vendor_support snd_timer videobuf2_common dell_smm_hwmon dell_wmi_sysman processor_thermal_power_floor cfg80211 bluetooth
 dell_smbios intel_pmc_core intel_uncore snd videodev spi_intel_pci mei_me pcspkr processor_thermal_mbox dcdbas firmware_attributes_class dell_wmi_descriptor pmt_telemetry wmi_bmof intel_wmi_thunderbolt int3403_thermal dell_lis3lv02d soundcore i2c_i801 spi_intel i2c_smbus mc mei rfkill drm_ttm_helper intel_soc_dts_iosf intel_hid intel_pch_thermal pmt_class int340x_thermal_zone dell_smo8800 idma64 sparse_keymap int3400_thermal intel_vsec acpi_thermal_rel acpi_pad joydev loop nfnetlink zram lz4hc_compress lz4_compress i915 i2c_algo_bit drm_buddy rtsx_pci_sdmmc polyval_clmulni mmc_core polyval_generic ttm ghash_clmulni_intel nvme sha512_ssse3 ucsi_acpi sha256_ssse3 mxm_wmi nvme_core typec_ucsi drm_display_helper i2c_hid_acpi video sha1_ssse3 rtsx_pci nvme_auth cec typec i2c_hid pinctrl_cannonlake wmi hid_multitouch serio_raw fuse
CPU: 3 UID: 0 PID: 428270 Comm: kworker/u48:92 Tainted: P        W  O       6.14.5-200.fc41.x86_64 #1
Tainted: [P]=PROPRIETARY_MODULE, [W]=WARN, [O]=OOT_MODULE
Hardware name: Dell Inc. Precision 5530/0N0DK2, BIOS 1.42.0 12/11/2024
Workqueue: USBC000:00-con1 ucsi_poll_worker [typec_ucsi]
RIP: 0010:typec_altmode_update_active+0xfb/0x110 [typec]
Code: 06 ee 48 8b 44 24 08 65 48 2b 04 25 28 00 00 00 75 1f 48 83 c4 10 5b 5d c3 cc cc cc cc e8 4d 98 0c ed 84 c0 0f 85 74 ff ff ff <0f> 0b e9 6d ff ff ff e8 a9 8c 09 ee 66 0f 1f 84 00 00 00 00 00 90
RSP: 0018:ffffa8dc76e3fdb8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff9606cc292008 RCX: 0000000000000002
RDX: ffff9606cc292008 RSI: 0000000000000001 RDI: ffffffffc835d300
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000014
R10: 0000000000000000 R11: ffff960e1c3a1800 R12: 0000000000000001
R13: 0000000000000001 R14: ffff9606dcf1e000 R15: ffff9606cc292008
FS:  0000000000000000(0000) GS:ffff960e1c380000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f45208b067c CR3: 000000064582c001 CR4: 00000000003726f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ucsi_altmode_update_active+0xb2/0x160 [typec_ucsi]
 ucsi_check_altmodes+0x74/0x90 [typec_ucsi]
 ucsi_poll_worker+0x3a/0x110 [typec_ucsi]
 process_one_work+0x176/0x330
 worker_thread+0x252/0x390
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xec/0x230
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x31/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1a/0x30
 </TASK>

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: 0 UID: 0 PID: 357884 Comm: kworker/0:1 Not tainted 6.14.5-200.fc41.x86_64 #1
Hardware name: LENOVO 20L7S24F00/20L7S24F00, BIOS N22ET83W (1.60 ) 03/17/2025
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 18 48 89 f8 0f 1f 40 00 48 83 c0 01 80 38 00 75 f7 48
RSP: 0000:ffffbfe20b90bd80 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000082000100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff9d9fa5069b98 R09: 00000000820001e9
R10: 00000000820001e9 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff9d9faf200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001a258a005 CR4: 00000000003726f0
Call Trace:
 <TASK>
 kernfs_name_hash+0x12/0xb0
 kernfs_find_ns+0x37/0xc0
 kernfs_remove_by_name_ns+0x4a/0xc0
 typec_unregister_partner+0x5d/0x110 [typec]
 ucsi_unregister_partner+0x103/0x140 [typec_ucsi]
 ucsi_handle_connector_change+0x29d/0x2f0 [typec_ucsi]
 process_one_work+0x176/0x330
 worker_thread+0x252/0x390
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xec/0x230
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x31/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in: typec_displayport wireguard curve25519_x86_64 libcurve25519_generic ip6_udp_tunnel udp_tunnel 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 qrtr bnep sunrpc binfmt_misc snd_sof_pci_intel_skl vfat snd_sof_intel_hda_generic fat soundwire_intel soundwire_cadence snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_intel_hda_mlink snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils snd_soc_acpi_intel_match intel_uncore_frequency snd_soc_acpi_intel_sdca_quirks intel_uncore_frequency_common soundwire_generic_allocation intel_pmc_core_pltdrv snd_soc_acpi intel_pmc_core soundwire_bus pmt_telemetry pmt_class snd_soc_sdca intel_vsec intel_tcc_cooling snd_soc_avs snd_hda_codec_hdmi snd_soc_hda_codec iwlmvm x86_pkg_temp_thermal intel_powerclamp snd_hda_ext_core
 elan_i2c coretemp snd_soc_core snd_hda_codec_realtek iTCO_wdt snd_compress kvm_intel squashfs snd_hda_codec_generic ac97_bus intel_pmc_bxt snd_hda_scodec_component mac80211 iTCO_vendor_support ee1004 snd_pcm_dmaengine mei_hdcp mei_pxp intel_rapl_msr snd_hda_intel kvm libarc4 uvcvideo snd_intel_dspcfg snd_intel_sdw_acpi uvc videobuf2_vmalloc btusb irqbypass videobuf2_memops snd_hda_codec videobuf2_v4l2 btrtl videobuf2_common snd_hda_core btintel iwlwifi rapl snd_hwdep think_lmi btbcm videodev intel_cstate btmtk snd_seq snd_seq_device intel_uncore firmware_attributes_class bluetooth mc pcspkr snd_ctl_led cfg80211 snd_pcm e1000e wmi_bmof intel_wmi_thunderbolt processor_thermal_device_pci_legacy i2c_i801 processor_thermal_device i2c_smbus snd_timer processor_thermal_wt_hint processor_thermal_rfim mei_me thinkpad_acpi processor_thermal_rapl mei intel_rapl_common idma64 sparse_keymap processor_thermal_wt_req processor_thermal_power_floor intel_pch_thermal platform_profile processor_thermal_mbox
 intel_xhci_usb_role_switch intel_soc_dts_iosf rfkill snd int3403_thermal soundcore int340x_thermal_zone int3400_thermal acpi_pad acpi_thermal_rel joydev loop nfnetlink zram lz4hc_compress lz4_compress i915 hid_logitech_hidpp i2c_algo_bit polyval_clmulni drm_buddy polyval_generic nvme ttm ghash_clmulni_intel uas sha512_ssse3 ucsi_acpi drm_display_helper usb_storage nvme_core sha256_ssse3 sha1_ssse3 video typec_ucsi nvme_auth cec typec wmi hid_logitech_dj serio_raw fuse
CR2: 0000000000000000

WARNING: CPU: 10 PID: 157 at kernel/workqueue.c:2325 __queue_work+0x2c9/0x400
Modules linked in: processor_thermal_device_pci(+) btintel videobuf2_vmalloc(+) processor_thermal_device snd_hwdep snd_ctl_led(+) btbcm videobuf2_memops processor_thermal_wt_hint think_lmi(+) btmtk videobuf2_v4l2 intel_uncore(+) snd_seq processor_thermal_rfim firmware_attributes_class videobuf2_common snd_seq_device cfg80211 processor_thermal_rapl pcspkr bluetooth wmi_bmof snd_pcm videodev thinkpad_acpi(+) mei_me e1000e(+) thunderbolt(+) intel_rapl_common sparse_keymap snd_timer mei processor_thermal_wt_req i2c_i801 spi_intel_pci mc platform_profile i2c_smbus spi_intel processor_thermal_power_floor idma64 rfkill igen6_edac processor_thermal_mbox snd soundcore int3403_thermal int340x_thermal_zone intel_pmc_core int3400_thermal pmt_telemetry acpi_pad acpi_thermal_rel acpi_tad pmt_class joydev loop nfnetlink zram lz4hc_compress lz4_compress xe drm_ttm_helper intel_vsec gpu_sched drm_suballoc_helper drm_gpuvm drm_exec i915 i2c_algo_bit drm_buddy ttm polyval_clmulni nvme polyval_generic ghash_clmulni_intel
 ucsi_acpi drm_display_helper sha512_ssse3 nvme_core typec_ucsi video sha256_ssse3 hid_multitouch sha1_ssse3 typec cec nvme_auth i2c_hid_acpi i2c_hid wmi pinctrl_tigerlake serio_raw fuse
CPU: 10 UID: 0 PID: 157 Comm: kworker/10:1 Not tainted 6.14.5-200.fc41.x86_64 #1
Hardware name: LENOVO 21JQCTO1WW/21JQCTO1WW, BIOS R2AET54W(1.29) 12/28/2023
Workqueue: events_long ucsi_init_work [typec_ucsi]
RIP: 0010:__queue_work+0x2c9/0x400
Code: f6 47 2c 20 0f 85 98 00 00 00 80 3d be 5d 81 02 00 0f 84 ed 00 00 00 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc <0f> 0b e9 3b fe ff ff 65 8b 05 45 49 c5 4c 48 0f a3 05 d1 cd 86 02
RSP: 0018:ffffbe088091fd90 EFLAGS: 00010013
RAX: ffff9d62cabb1268 RBX: ffff9d62cabb1260 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9d660f736080
RBP: ffff9d62c0208e00 R08: ffffffffb5872d88 R09: ffff9d62c0403258
R10: 0000000000000000 R11: ffff9d660f746400 R12: 0000000000002000
R13: ffff9d660f736080 R14: 000000000000000a R15: ffff9d62c020e600
FS:  0000000000000000(0000) GS:ffff9d660f700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd422dc3828 CR3: 000000010eec9002 CR4: 0000000000f70ef0
PKRU: 55555554
Call Trace:
 <TASK>
 queue_work_on+0x65/0x70
 ucsi_init+0x1f8/0x300 [typec_ucsi]
 ucsi_init_work+0x17/0x70 [typec_ucsi]
 process_one_work+0x176/0x330
 worker_thread+0x252/0x390
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xec/0x230
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x31/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1a/0x30
 </TASK>