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: 0000 [#1] SMP NOPTI
CPU: 2 PID: 25815 Comm: kworker/2:3 Not tainted 5.14.9-300.fc35.x86_64 #1
Hardware name: Dell Inc. Latitude 5520/0G0K70, BIOS 1.5.1 04/01/2021
Workqueue: usb_hub_wq hub_event
RIP: 0010:strcmp+0xc/0x20
Code: 06 49 89 f8 48 83 c6 01 48 83 c7 01 88 47 ff 84 c0 75 eb 4c 89 c0 c3 0f 1f 80 00 00 00 00 31 c0 eb 08 48 83 c0 01 84 d2 74 0f <0f> b6 14 07 3a 14 06 74 ef 19 c0 83 c8 01 c3 31 c0 c3 66 90 48 85
RSP: 0018:ffff9d2684ff7d98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff889bf91b95c0 RCX: ffff889bf91bb9c8
RDX: 0000000000000001 RSI: ffffffff8e67c948 RDI: 0000000000000000
RBP: ffff889bf91b95c0 R08: ffff889e3f6ab060 R09: ffff889cfc87dbac
R10: 000000000000000b R11: 000000000000000b R12: ffff889e3f6ab040
R13: ffff889e3f6b4600 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff889e3f680000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000012ba06006 CR4: 0000000000770ee0
PKRU: 55555554
Call Trace:
 hub_event+0x6d/0x1770
 ? load_new_mm_cr3+0x23/0xa0
 ? switch_mm_irqs_off+0x1cf/0x440
 ? __switch_to_asm+0x42/0x70
 ? __schedule+0x31e/0x1500
 ? mutex_lock+0xe/0x30
 process_one_work+0x1e9/0x390
 worker_thread+0x53/0x3e0
 ? process_one_work+0x390/0x390
 kthread+0x124/0x150
 ? set_kthread_struct+0x40/0x40
 ret_from_fork+0x1f/0x30
Modules linked in: snd_usb_audio snd_usbmidi_lib snd_rawmidi r8153_ecm cdc_ether usbnet r8152 mii nls_utf8 hfsplus udf crc_itu_t uas usb_storage r820t rtl2832 i2c_mux dvb_usb_rtl28xxu dvb_usb_v2 dvb_core hid_microsoft hidp xpad ff_memless uinput rfcomm snd_seq_dummy snd_hrtimer nft_objref 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 ns bnep sunrpc vfat fat dell_rbtn snd_sof_pci_intel_tgl snd_sof_intel_hda_common snd_hda_codec_hdmi soundwire_intel soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_soc_hdac_hda snd_ctl_led snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi snd_hda_codec_realtek soundwire_bus snd_hda_codec_generic snd_soc_core ee1004 iTCO_wdt intel_pmt_telemetry snd_compress intel_pmc_bxt
 ac97_bus snd_pcm_dmaengine iTCO_vendor_support intel_tcc_cooling intel_pmt_class intel_rapl_msr mei_hdcp x86_pkg_temp_thermal dell_laptop intel_powerclamp snd_hda_intel coretemp snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec iwlmvm kvm_intel snd_hda_core snd_hwdep snd_seq snd_seq_device mac80211 kvm snd_pcm irqbypass intel_cstate dell_wmi snd_timer intel_uncore ledtrig_audio libarc4 pcspkr snd dell_smbios dcdbas dell_wmi_sysman i2c_i801 firmware_attributes_class dell_wmi_descriptor wmi_bmof iwlwifi uvcvideo i2c_smbus soundcore btusb mei_me videobuf2_vmalloc videobuf2_memops btrtl videobuf2_v4l2 btbcm mei videobuf2_common btintel cfg80211 bluetooth idma64 videodev joydev processor_thermal_device_pci_legacy ecdh_generic processor_thermal_device processor_thermal_rfim mc rfkill thunderbolt processor_thermal_mbox intel_pmt processor_thermal_rapl intel_rapl_common intel_soc_dts_iosf igen6_edac int3403_thermal int340x_thermal_zone intel_hid sparse_keymap int3400_thermal
 acpi_thermal_rel acpi_tad acpi_pad zram ip_tables hid_sensor_hub intel_ishtp_loader intel_ishtp_hid i915 hid_multitouch nouveau drm_ttm_helper mxm_wmi i2c_algo_bit ttm drm_kms_helper rtsx_pci_sdmmc mmc_core crct10dif_pclmul crc32_pclmul cec crc32c_intel nvme ghash_clmulni_intel drm e1000e serio_raw nvme_core ucsi_acpi typec_ucsi rtsx_pci intel_ish_ipc typec intel_ishtp i2c_hid_acpi i2c_hid video wmi pinctrl_tigerlake ipmi_devintf ipmi_msghandler fuse
CR2: 0000000000000000