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: 0 PID: 288975 Comm: kworker/u16:18 Tainted: G           OE     5.18.6-200.fc36.x86_64 #1
Hardware name: LENOVO 20UW0013US/20UW0013US, BIOS R1GET39W (1.14 ) 05/27/2021
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:ffffb677c1bbfbd8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff917c81fa5700 RCX: ffff917f2d6071f0
RDX: 0000000000000000 RSI: ffff917f2d607211 RDI: ffff917f2d6071b0
RBP: ffffb677c1bbfc01 R08: ffff917c81fa5750 R09: 0000000000000000
R10: ffff917f2d607210 R11: 0000000000000000 R12: ffff917f2d607000
R13: ffff917c8b017308 R14: 00000000ffffffff R15: ffff917c8b012800
FS:  0000000000000000(0000) GS:ffff917fcd200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000012ae10002 CR4: 0000000000770ef0
PKRU: 55555554
Call Trace:
 <TASK>
 drop_sysctl_table+0xb0/0x150
 unregister_sysctl_table.part.0+0x3b/0x90
 neigh_sysctl_unregister+0x1f/0x30
 addrconf_ifdown.isra.0+0x6aa/0x780
 ? lock_timer_base+0x61/0x80
 ? preempt_count_add+0x64/0x90
 ? _raw_spin_lock+0x13/0x40
 addrconf_notify+0xc2/0x8e0
 raw_notifier_call_chain+0x41/0x60
 unregister_netdevice_many+0x395/0x740
 default_device_exit_batch+0x1f7/0x260
 cleanup_net+0x20d/0x390
 process_one_work+0x1c4/0x380
 worker_thread+0x4d/0x380
 ? process_one_work+0x380/0x380
 kthread+0xe6/0x110
 ? kthread_complete_and_exit+0x20/0x20
 ret_from_fork+0x1f/0x30
 </TASK>
Modules linked in: lp parport xfs binfmt_misc xt_nat ses enclosure scsi_transport_sas vhost_net vhost vhost_iotlb tap tun xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nft_compat nf_nat_tftp nf_conntrack_tftp bridge stp llc tls r8153_ecm cdc_ether usbnet r8152 uas usb_storage mii snd_usb_audio snd_usbmidi_lib snd_rawmidi tg3 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 bnep snd_ctl_led snd_soc_skl_hda_dsp snd_soc_intel_hda_dsp_common snd_soc_hdac_hdmi snd_sof_probes snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic 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 sunrpc 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 snd_soc_core snd_compress mac80211 ac97_bus snd_pcm_dmaengine iTCO_wdt intel_tcc_cooling x86_pkg_temp_thermal intel_pmc_bxt libarc4 snd_hda_intel iTCO_vendor_support mei_hdcp mei_pxp intel_powerclamp coretemp intel_rapl_msr snd_intel_dspcfg pmt_telemetry pmt_class snd_intel_sdw_acpi kvm_intel iwlwifi snd_hda_codec snd_hda_core kvm snd_hwdep snd_seq btusb snd_seq_device btrtl irqbypass snd_pcm iwlmei btbcm intel_cstate vfat btintel fat intel_uncore i2c_i801 think_lmi btmtk firmware_attributes_class pcspkr wmi_bmof snd_timer i2c_smbus my_hid_multitouch(OE) iosm cfg80211 bluetooth mei_me uvcvideo idma64 hid_sensor_accel_3d videobuf2_vmalloc hid_sensor_gyro_3d videobuf2_memops hid_sensor_trigger videobuf2_v4l2 mei joydev hid_sensor_iio_common industrialio_triggered_buffer videobuf2_common ecdh_generic kfifo_buf industrialio processor_thermal_device_pci_legacy
 processor_thermal_device thinkpad_acpi thunderbolt processor_thermal_rfim processor_thermal_mbox ledtrig_audio platform_profile processor_thermal_rapl intel_vsec rfkill intel_rapl_common intel_soc_dts_iosf snd ov8856 soundcore v4l2_fwnode v4l2_async int3403_thermal int340x_thermal_zone soc_button_array videodev intel_skl_int3472_tps68470 mc tps68470_regulator clk_tps68470 intel_skl_int3472_discrete int3400_thermal intel_hid sparse_keymap acpi_pad acpi_thermal_rel acpi_tad zram dm_crypt hid_sensor_hub intel_ishtp_hid i915 drm_buddy drm_dp_helper wacom nvme intel_ish_ipc ucsi_acpi crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel typec_ucsi nvme_core serio_raw intel_ishtp ttm i2c_hid_acpi typec wmi i2c_hid video pinctrl_tigerlake ip6_tables ip_tables ipmi_devintf ipmi_msghandler fuse
CR2: 0000000000000000