Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 8000000428703067 P4D 8000000428703067 PUD 0 
Oops: 0000 [#1] SMP PTI
CPU: 3 PID: 57235 Comm: kworker/3:1 Not tainted 5.11.22-100.fc32.x86_64 #1
Hardware name: Dell Inc. Precision 5520/0R6JFH, BIOS 1.11.0 07/24/2018
Workqueue: usb_hub_wq hub_event
RIP: 0010:hub_event+0x6d/0x1840
Code: 24 30 0f 1f 44 00 00 48 8b 04 24 48 8b 40 48 48 8b 00 48 8b 70 50 48 85 f6 75 03 48 8b 30 48 c7 c7 fb 60 45 bb b9 0d 00 00 00 <f3> a6 0f 97 c0 1c 00 84 c0 75 0e 48 8b 04 24 83 78 18 07 0f 84 fc
RSP: 0000:ffff9c604796bda8 EFLAGS: 00010246
RAX: ffff89f40cc5c0c8 RBX: ffff89f0f88a5f00 RCX: 000000000000000d
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffffffbb4560fb
RBP: ffff89eeec8025c0 R08: ffff89f5df6e99a0 R09: ffff89f0f88a5f6c
R10: 000000000000000b R11: 000000000000000b R12: ffff89f5df6e9980
R13: ffff89f5df6f2e00 R14: 0000000000000000 R15: ffff89eeec8025c0
FS:  0000000000000000(0000) GS:ffff89f5df6c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000025028a006 CR4: 00000000003706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ? rpm_suspend+0x69b/0x6c0
 process_one_work+0x1ec/0x380
 worker_thread+0x53/0x3e0
 ? process_one_work+0x380/0x380
 kthread+0x11b/0x140
 ? __kthread_bind_mask+0x60/0x60
 ret_from_fork+0x22/0x30
Modules linked in: snd_usb_audio snd_usbmidi_lib snd_rawmidi uinput rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp tun 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 nf_tables ebtable_nat ebtable_broute 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 cmac ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter bnep sunrpc squashfs vfat fat loop snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_intel_dspcfg soundwire_intel soundwire_generic_allocation snd_soc_core x86_pkg_temp_thermal intel_powerclamp snd_compress coretemp iwlmvm snd_pcm_dmaengine soundwire_cadence dell_rbtn snd_hda_codec uvcvideo iTCO_wdt
 intel_pmc_bxt mei_wdt mei_hdcp ee1004 kvm_intel snd_hda_core iTCO_vendor_support dell_laptop videobuf2_vmalloc ac97_bus ledtrig_audio btusb btrtl btbcm mac80211 videobuf2_memops btintel videobuf2_v4l2 snd_hwdep intel_rapl_msr kvm snd_seq bluetooth libarc4 dell_smm_hwmon snd_seq_device iwlwifi videobuf2_common irqbypass rapl intel_cstate snd_pcm snd_timer intel_uncore dell_wmi ecdh_generic dell_smbios ecc videodev dcdbas snd i2c_i801 cfg80211 pcspkr intel_wmi_thunderbolt wmi_bmof dell_wmi_descriptor mc i2c_smbus soundcore processor_thermal_device processor_thermal_rfim mei_me processor_thermal_mbox processor_thermal_rapl joydev rfkill intel_rapl_common mei intel_soc_dts_iosf idma64 intel_pch_thermal int3400_thermal int3403_thermal acpi_thermal_rel int340x_thermal_zone acpi_pad intel_hid sparse_keymap ip_tables i915 nouveau hid_multitouch drm_ttm_helper ttm rtsx_pci_sdmmc i2c_algo_bit mmc_core drm_kms_helper mxm_wmi crct10dif_pclmul crc32_pclmul crc32c_intel cec serio_raw
 ghash_clmulni_intel nvme drm i2c_hid rtsx_pci nvme_core wmi video fuse
CR2: 0000000000000000