Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 121e44067 P4D 121e44067 PUD 0 
Oops: 0000 [#1] SMP NOPTI
CPU: 8 PID: 317966 Comm: kworker/8:8 Tainted: G           OE     5.12.7-300.fc34.x86_64 #1
Hardware name: Dell Inc. XPS 15 9500/0RHXRG, BIOS 1.6.1 12/24/2020
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:ffffa0c10c1c3d98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff9465998f29c0 RCX: ffff9467ed626b88
RDX: 0000000000000001 RSI: ffffffffbb45f78b RDI: 0000000000000000
RBP: ffff9465998f29c0 R08: ffff9467ed629d60 R09: ffff946460e081ec
R10: 000000000000000b R11: 000000000000000b R12: ffff9467ed629d40
R13: ffff9467ed633200 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff9467ed600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000028cf34003 CR4: 00000000007706e0
PKRU: 55555554
Call Trace:
 hub_event+0x6d/0x1760
 ? check_preempt_wakeup+0xf8/0x250
 ? psi_task_change+0x84/0xc0
 ? check_preempt_curr+0x55/0x70
 ? ttwu_do_wakeup+0x17/0x130
 ? try_to_wake_up+0x1c1/0x4f0
 ? mutex_lock+0xe/0x30
 process_one_work+0x1ec/0x380
 worker_thread+0x53/0x3e0
 ? process_one_work+0x380/0x380
 kthread+0x11b/0x140
 ? kthread_associate_blkcg+0xa0/0xa0
 ret_from_fork+0x1f/0x30
Modules linked in: tun hidp hid_logitech_hidpp uhid uas usb_storage r8153_ecm cdc_ether usbnet r8152 mii snd_usb_audio snd_usbmidi_lib snd_rawmidi uinput rfcomm snd_seq_dummy snd_hrtimer xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp bridge stp llc ccm 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 ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter cmac sunrpc vfat fat squashfs loop snd_sof_pci_intel_cnl snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof snd_sof_xtensa_dsp snd_soc_skl snd_hda_codec_hdmi snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc
 snd_soc_sst_dsp snd_soc_acpi_intel_match snd_soc_acpi x86_pkg_temp_thermal intel_powerclamp snd_soc_core snd_hda_codec_realtek snd_compress snd_pcm_dmaengine coretemp snd_hda_codec_generic iwlmvm ac97_bus snd_hda_intel kvm_intel snd_intel_dspcfg iTCO_wdt intel_pmc_bxt snd_intel_sdw_acpi ee1004 mei_hdcp iTCO_vendor_support snd_hda_codec mac80211 intel_rapl_msr kvm dell_laptop snd_hda_core ledtrig_audio snd_hwdep dell_smm_hwmon libarc4 snd_seq irqbypass rapl snd_seq_device intel_cstate iwlwifi snd_pcm intel_uncore uvcvideo dell_wmi hid_sensor_als snd_timer hid_sensor_trigger videobuf2_vmalloc dell_smbios hid_sensor_iio_common videobuf2_memops industrialio_triggered_buffer dcdbas pcspkr snd i2c_i801 videobuf2_v4l2 processor_thermal_device dell_wmi_sysman mei_me kfifo_buf dell_wmi_descriptor wmi_bmof intel_wmi_thunderbolt i2c_smbus soundcore thunderbolt cfg80211 joydev processor_thermal_rfim mei videobuf2_common industrialio idma64 processor_thermal_mbox processor_thermal_rapl
 intel_rapl_common intel_soc_dts_iosf intel_pch_thermal ucsi_acpi typec_ucsi typec int3403_thermal int340x_thermal_zone int3400_thermal acpi_thermal_rel intel_hid acpi_pad acpi_tad sparse_keymap v4l2loopback(OE) videodev binfmt_misc mc zram ip_tables bnep btusb btrtl btbcm btintel bluetooth ecdh_generic rfkill ecc hid_sensor_hub intel_ishtp_loader intel_ishtp_hid i915 nouveau hid_multitouch drm_ttm_helper ttm rtsx_pci_sdmmc mxm_wmi crct10dif_pclmul i2c_algo_bit crc32_pclmul mmc_core crc32c_intel drm_kms_helper cec ghash_clmulni_intel drm nvme serio_raw nvme_core intel_ish_ipc i2c_hid_acpi intel_ishtp wmi rtsx_pci i2c_hid video pinctrl_cannonlake fuse
CR2: 0000000000000000