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: 2 PID: 34687 Comm: kworker/u16:9 Tainted: G           OE     5.18.9-200.fc36.x86_64 #1
Hardware name: LENOVO 20WE/LNVNB161216, BIOS FNCN33WW(V2.03) 07/13/2021
Workqueue: netns cleanup_net
RIP: 0010:rb_erase+0x110/0x350
Code: 48 8b 01 a8 01 0f 84 3c 02 00 00 48 83 f8 03 77 02 c3 cc 48 83 e0 fc 48 89 ca 48 89 c1 48 8b 41 08 48 39 d0 75 aa 48 8b 41 10 <f6> 00 01 0f 84 22 01 00 00 48 8b 70 10 48 85 f6 74 05 f6 06 01 74
RSP: 0018:ffffc03c0790bc70 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff99a13f047d00 RCX: ffff99a10a8841f0
RDX: 0000000000000000 RSI: ffff99a10a884211 RDI: ffff99a10a8841b0
RBP: ffffc03c0790bd01 R08: ffff99a13f047d50 R09: 0000000000000000
R10: ffff99a10a884210 R11: 0000000000000002 R12: ffff99a10a884000
R13: ffff99a16dba4b08 R14: ffff99a26f8b6000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff99a2a6680000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000180d7e003 CR4: 0000000000770ee0
PKRU: 55555554
Call Trace:
 <TASK>
 drop_sysctl_table+0xb0/0x150
 unregister_sysctl_table.part.0+0x3b/0x90
 neigh_sysctl_unregister+0x1f/0x30
 inetdev_event+0x224/0x630
 ? mutex_lock+0xe/0x30
 raw_notifier_call_chain+0x41/0x60
 unregister_netdevice_many+0x3af/0x760
 default_device_exit_batch+0x1f7/0x260
 cleanup_net+0x20d/0x390
 process_one_work+0x1c4/0x380
 worker_thread+0x4d/0x380
 ? _raw_spin_lock_irqsave+0x23/0x50
 ? process_one_work+0x380/0x380
 kthread+0xe6/0x110
 ? kthread_complete_and_exit+0x20/0x20
 ret_from_fork+0x1f/0x30
 </TASK>
Modules linked in: binfmt_misc overlay tls 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 snd_soc_skl_hda_dsp snd_soc_intel_hda_dsp_common snd_soc_hdac_hdmi snd_sof_probes bnep snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic sunrpc snd_soc_dmic snd_sof_pci_intel_tgl 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 snd_sof_utils snd_soc_hdac_hda snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi soundwire_bus iwlmvm ledtrig_audio snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi mac80211 iTCO_wdt snd_hda_codec intel_tcc_cooling x86_pkg_temp_thermal
 intel_powerclamp intel_pmc_bxt mei_pxp mei_hdcp iTCO_vendor_support coretemp snd_hda_core libarc4 intel_rapl_msr kvm_intel snd_hwdep iwlwifi kvm snd_seq uvcvideo snd_seq_device irqbypass vfat snd_pcm intel_cstate iwlmei fat videobuf2_vmalloc hid_sensor_accel_3d snd_timer videobuf2_memops intel_uncore snd think_lmi hid_sensor_trigger videobuf2_v4l2 i2c_i801 pcspkr cfg80211 firmware_attributes_class btusb soundcore i2c_smbus btrtl wmi_bmof mei_me hid_sensor_iio_common videobuf2_common btbcm industrialio_triggered_buffer kfifo_buf industrialio videodev mei idma64 btintel btmtk mc bluetooth joydev processor_thermal_device_pci_legacy processor_thermal_device processor_thermal_rfim processor_thermal_mbox processor_thermal_rapl intel_rapl_common thunderbolt ecdh_generic intel_soc_dts_iosf igen6_edac ideapad_laptop sparse_keymap platform_profile rfkill int3403_thermal int340x_thermal_zone int3400_thermal acpi_thermal_rel soc_button_array acpi_pad yoga_usage_mode(OE) zram i915 nvme
 sdhci_pci nvme_core drm_buddy drm_dp_helper cqhci sdhci hid_sensor_hub ucsi_acpi wacom hid_multitouch crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel mmc_core typec_ucsi serio_raw ttm vmd i2c_hid_acpi typec wmi i2c_hid video pinctrl_tigerlake ip6_tables ip_tables ipmi_devintf ipmi_msghandler fuse
CR2: 0000000000000000