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: 1727250 Comm: kworker/u16:45 Tainted: G        W         5.18.13-200.fc36.x86_64 #1
Hardware name: SAMSUNG ELECTRONICS CO., LTD. 750XDA/NP750XDA-KC2IT, BIOS P17CFD.041.220127.HQ 01/27/2022
Workqueue: netns cleanup_net
RIP: 0010:rb_erase+0x116/0x370
Code: a8 01 0f 84 54 02 00 00 48 83 f8 03 77 05 c3 cc cc cc cc 48 83 e0 fc 48 89 ca 48 89 c1 48 8b 41 08 48 39 d0 75 a7 48 8b 41 10 <f6> 00 01 0f 84 2b 01 00 00 48 8b 70 10 48 85 f6 74 05 f6 06 01 74
RSP: 0018:ffffb21a071e7bd8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8d4704e2ff00 RCX: ffff8d45e36871f0
RDX: 0000000000000000 RSI: ffff8d45e3687211 RDI: ffff8d45e36871b0
RBP: ffffb21a071e7c01 R08: ffff8d4704e2ff50 R09: 0000000000000000
R10: ffff8d45e3687210 R11: 0000000000000000 R12: ffff8d45e3687000
R13: ffff8d45d0903308 R14: 00000000ffffffff R15: ffff8d45d0900000
FS:  0000000000000000(0000) GS:ffff8d4766200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000104b0e001 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+0x6b0/0x780
 ? lock_timer_base+0x61/0x80
 ? preempt_count_add+0x6a/0xa0
 ? _raw_spin_lock+0x13/0x40
 addrconf_notify+0xc2/0x8e0
 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
 ? process_one_work+0x380/0x380
 kthread+0xe6/0x110
 ? kthread_complete_and_exit+0x20/0x20
 ret_from_fork+0x1f/0x30
 </TASK>
Modules linked in: uas usb_storage cdc_acm binfmt_misc veth xt_nat xt_conntrack xt_MASQUERADE nf_conntrack_netlink xt_addrtype nft_compat br_netfilter bridge stp llc 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 bnep sunrpc vfat fat 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 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 intel_tcc_cooling
 snd_compress ac97_bus snd_pcm_dmaengine iTCO_wdt x86_pkg_temp_thermal intel_pmc_bxt snd_hda_intel intel_powerclamp coretemp mac80211 snd_intel_dspcfg iTCO_vendor_support snd_intel_sdw_acpi mei_pxp mei_hdcp kvm_intel snd_hda_codec snd_hda_core libarc4 intel_rapl_msr btusb snd_hwdep snd_seq snd_seq_device kvm iwlwifi btrtl snd_pcm btbcm irqbypass iwlmei btintel intel_cstate intel_uncore snd_timer uvcvideo btmtk videobuf2_vmalloc snd i2c_i801 videobuf2_memops pcspkr wmi_bmof cfg80211 videobuf2_v4l2 i2c_smbus soundcore bluetooth mei_me videobuf2_common idma64 processor_thermal_device_pci_legacy joydev videodev mei processor_thermal_device processor_thermal_rfim ecdh_generic processor_thermal_mbox mc rfkill processor_thermal_rapl intel_rapl_common igen6_edac intel_soc_dts_iosf int3403_thermal int340x_thermal_zone int3400_thermal acpi_pad acpi_thermal_rel acpi_tad zram i915 drm_buddy drm_dp_helper nvme hid_multitouch ucsi_acpi crct10dif_pclmul crc32_pclmul crc32c_intel nvme_core
 ghash_clmulni_intel serio_raw typec_ucsi ttm typec i2c_hid_acpi i2c_hid video wmi pinctrl_tigerlake ip6_tables ip_tables fuse
CR2: 0000000000000000