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: 7257 Comm: kworker/u16:42 Not tainted 5.17.4-200.fc35.x86_64 #1
Hardware name: Dell Inc. Inspiron 14 5410 2-in-1/09086W, BIOS 2.7.2 02/22/2022
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:ffffb50c8521fc70 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff9d59e8e2d200 RCX: 0000000000000000
RDX: ffff9d58c3c4b9f0 RSI: 0000000000000000 RDI: ffff9d58c3c4b9b0
RBP: ffff9d58c3c4b800 R08: ffff9d59e8e2d250 R09: 0000000000000000
R10: ffff9d58c3c4ba10 R11: ffff9d590cb5cd01 R12: ffff9d597de2eb08
R13: ffff9d59657d1e00 R14: ffff9d597297f000 R15: ffff9d58e085c300
FS:  0000000000000000(0000) GS:ffff9d5a47680000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001e7e0a002 CR4: 0000000000770ee0
PKRU: 55555554
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: 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 bnep 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_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_soc_hdac_hda snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi soundwire_bus snd_soc_core snd_compress iwlmvm intel_tcc_cooling ac97_bus x86_pkg_temp_thermal snd_pcm_dmaengine intel_powerclamp iTCO_wdt mei_hdcp mei_pxp coretemp ee1004 intel_pmc_bxt mac80211 snd_hda_intel iTCO_vendor_support snd_intel_dspcfg
 snd_intel_sdw_acpi kvm_intel snd_hda_codec pmt_telemetry intel_rapl_msr pmt_class libarc4 dell_laptop kvm snd_hda_core snd_hwdep irqbypass snd_seq iwlwifi snd_seq_device intel_cstate dell_wmi btusb ledtrig_audio intel_uncore snd_pcm uvcvideo btrtl iwlmei btbcm videobuf2_vmalloc videobuf2_memops dell_smbios btintel pcspkr snd_timer dell_wmi_sysman videobuf2_v4l2 dcdbas cfg80211 btmtk firmware_attributes_class wmi_bmof dell_wmi_descriptor videobuf2_common i2c_i801 snd bluetooth i2c_smbus soundcore videodev mei_me joydev mei mc idma64 ecdh_generic hid_sensor_magn_3d hid_sensor_gyro_3d hid_sensor_accel_3d hid_sensor_incl_3d hid_sensor_rotation rfkill hid_sensor_trigger hid_sensor_iio_common industrialio_triggered_buffer kfifo_buf processor_thermal_device_pci_legacy thunderbolt processor_thermal_device industrialio processor_thermal_rfim processor_thermal_mbox processor_thermal_rapl intel_rapl_common intel_vsec intel_soc_dts_iosf int3403_thermal int340x_thermal_zone
 soc_button_array intel_hid sparse_keymap int3400_thermal acpi_pad acpi_thermal_rel acpi_tad zram ip_tables hid_sensor_hub intel_ishtp_hid i915 i2c_algo_bit drm_kms_helper cec ttm nvme intel_ish_ipc ucsi_acpi hid_multitouch crct10dif_pclmul crc32_pclmul crc32c_intel drm nvme_core ghash_clmulni_intel typec_ucsi serio_raw intel_ishtp typec wmi i2c_hid_acpi i2c_hid video pinctrl_tigerlake ipmi_devintf ipmi_msghandler fuse
CR2: 0000000000000000