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] PREEMPT SMP NOPTI
CPU: 3 PID: 297698 Comm: kworker/u16:7 Tainted: G        W         5.17.4-200.fc35.x86_64 #1
Hardware name: LENOVO 20QES2P40U/20QES2P40U, BIOS N2HET67W (1.50 ) 02/03/2022
Workqueue: netns cleanup_net
RIP: 0010:rb_erase+0x106/0x350
Code: 00 00 48 89 10 48 8b 02 a8 01 0f 84 35 02 00 00 48 83 e0 fc 75 01 c3 48 89 d1 48 89 c2 48 8b 42 08 48 39 c8 75 af 48 8b 42 10 <f6> 00 01 0f 84 1d 01 00 00 48 8b 70 10 48 85 f6 74 05 f6 06 01 74
RSP: 0018:ffffad8a4771fc70 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8e9f0369d300 RCX: 0000000000000000
RDX: ffff8e9d2c4085f0 RSI: 0000000000000000 RDI: ffff8e9d2c4085b0
RBP: ffff8e9d2c408400 R08: ffff8e9f0369d350 R09: 0000000000000000
R10: ffff8e9d2c408610 R11: ffff8e9c91cb3400 R12: ffff8e9c8b06f308
R13: ffff8e9de3608200 R14: ffff8e9c81025000 R15: ffff8e9cc747b240
FS:  0000000000000000(0000) GS:ffff8e9fec4c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000010353c006 CR4: 00000000003706e0
Call Trace:
 <TASK>
 drop_sysctl_table+0xa1/0x140
 ? preempt_count_add+0x68/0xa0
 unregister_sysctl_table.part.0+0x3b/0x90
 neigh_sysctl_unregister+0x20/0x30
 inetdev_event+0x239/0x680
 ? preempt_count_add+0x68/0xa0
 ? mutex_lock+0xe/0x30
 ? raw_notifier_call_chain+0x41/0x60
 raw_notifier_call_chain+0x41/0x60
 unregister_netdevice_many+0x37e/0x760
 default_device_exit_batch+0x131/0x150
 ? init_wait_entry+0x30/0x30
 cleanup_net+0x203/0x390
 process_one_work+0x1e2/0x3b0
 worker_thread+0x50/0x3a0
 ? rescuer_thread+0x370/0x370
 kthread+0xe5/0x110
 ? kthread_complete_and_exit+0x20/0x20
 ret_from_fork+0x1f/0x30
 </TASK>
Modules linked in: r8153_ecm cdc_ether usbnet tun uinput rfcomm snd_seq_dummy snd_hrtimer qrtr bnep ipt_REJECT nf_reject_ipv4 xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat ipheth nf_tables nfnetlink sunrpc vfat fat snd_ctl_led snd_soc_skl_hda_dsp snd_soc_intel_hda_dsp_common snd_soc_hdac_hdmi snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_soc_dmic 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_xtensa_dsp snd_sof soundwire_bus snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc intel_tcc_cooling iwlmvm snd_soc_sst_dsp x86_pkg_temp_thermal snd_soc_acpi_intel_match intel_powerclamp snd_soc_acpi iTCO_wdt coretemp intel_pmc_bxt snd_soc_core mei_wdt iTCO_vendor_support mac80211 snd_compress mei_hdcp mei_pxp kvm_intel ac97_bus intel_rapl_msr snd_pcm_dmaengine libarc4 kvm irqbypass snd_hda_intel rapl btusb snd_intel_dspcfg
 intel_cstate snd_intel_sdw_acpi btrtl intel_uncore snd_hda_codec iwlwifi btbcm uvcvideo snd_usb_audio think_lmi btintel videobuf2_vmalloc pcspkr videobuf2_memops firmware_attributes_class btmtk i2c_i801 intel_wmi_thunderbolt wmi_bmof snd_hda_core videobuf2_v4l2 iwlmei thunderbolt videobuf2_common snd_usbmidi_lib i2c_smbus snd_hwdep mei_me snd_rawmidi bluetooth videodev cfg80211 idma64 snd_seq thinkpad_acpi snd_seq_device snd_pcm mc apple_mfi_fastcharge ledtrig_audio processor_thermal_device_pci_legacy platform_profile snd_timer processor_thermal_device ecdh_generic joydev processor_thermal_rfim mei rfkill processor_thermal_mbox snd processor_thermal_rapl intel_rapl_common intel_pch_thermal intel_soc_dts_iosf soundcore int3403_thermal int340x_thermal_zone int3400_thermal acpi_thermal_rel acpi_tad acpi_pad ip_tables xfs dm_crypt hid_logitech_hidpp typec_displayport hid_logitech_dj r8152 mii i915 i2c_algo_bit drm_kms_helper cec ttm nvme hid_multitouch crct10dif_pclmul
 crc32_pclmul crc32c_intel e1000e drm ghash_clmulni_intel serio_raw ucsi_acpi nvme_core typec_ucsi i2c_hid_acpi typec wmi i2c_hid video pinctrl_cannonlake ipmi_devintf ipmi_msghandler fuse
CR2: 0000000000000000