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: 1 PID: 1031 Comm: kworker/u32:8 Tainted: P           O      5.17.12-300.fc36.x86_64 #1
Hardware name: LENOVO 20Y30048US/20Y30048US, BIOS N40ET33W (1.15 ) 02/24/2022
Workqueue: netns cleanup_net
RIP: 0010:igmp6_group_dropped+0x24/0x230
Code: 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41 55 41 54 53 48 83 ec 28 65 48 8b 04 25 28 00 00 00 48 89 44 24 20 48 8b 47 10 <4c> 8b 20 f6 47 01 0e 74 32 8b 87 a0 00 00 00 48 89 fb a8 04 75 45
RSP: 0018:ffffbccac04f3bb0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff9b07cc63aa00 RCX: 0000000000000000
RDX: ffff9b07d4758000 RSI: ffffffffaa6fbddc RDI: ffff9b07cc63aa00
RBP: ffffbccac04f3bf0 R08: ffff9b07ff5628a8 R09: 0000000000000000
R10: ffffbccac04f3c20 R11: 0000000000000001 R12: ffff9b0808d03240
R13: ffff9b0808d02f40 R14: ffff9b07c84eb000 R15: ffff9b0808d03000
FS:  0000000000000000(0000) GS:ffff9b16df440000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000010c7a8004 CR4: 0000000000770ee0
PKRU: 55555554
Call Trace:
 <TASK>
 ? try_to_grab_pending+0xdb/0x170
 ipv6_mc_down+0x2c/0x190
 addrconf_ifdown.isra.0+0x6a0/0x720
 ? lock_timer_base+0x61/0x80
 addrconf_notify+0xc2/0x8d0
 ? __neigh_ifdown.isra.0+0xfc/0x120
 raw_notifier_call_chain+0x41/0x60
 dev_close_many+0xd9/0x120
 unregister_netdevice_many+0x148/0x750
 ? rtnl_is_locked+0x11/0x20
 ? unregister_netdevice_queue+0x58/0xf0
 default_device_exit_batch+0x131/0x150
 ? init_wait_entry+0x30/0x30
 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: uhid isofs rfcomm snd_seq_dummy snd_hrtimer nvidia_drm(PO) nvidia_modeset(PO) nvidia_uvm(PO) 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 nvidia(PO) qrtr bnep sunrpc snd_ctl_led snd_soc_skl_hda_dsp snd_soc_intel_hda_dsp_common snd_soc_hdac_hdmi snd_hda_codec_realtek snd_soc_dmic snd_hda_codec_generic mei_hdcp mei_wdt mei_pxp snd_sof_pci_intel_tgl snd_sof_intel_hda_common iTCO_wdt intel_tcc_cooling intel_pmc_bxt ee1004 x86_pkg_temp_thermal iTCO_vendor_support iwlmvm soundwire_intel soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci intel_powerclamp intel_rapl_msr snd_sof_xtensa_dsp coretemp snd_sof mac80211 snd_soc_hdac_hda kvm_intel snd_hda_ext_core snd_soc_acpi_intel_match vfat snd_soc_acpi fat soundwire_bus libarc4
 kvm iwlwifi snd_soc_core irqbypass intel_cstate btusb snd_compress snd_hda_codec_hdmi intel_uncore iwlmei ac97_bus btrtl snd_pcm_dmaengine btbcm snd_hda_intel btintel gspca_vc032x pcspkr think_lmi snd_intel_dspcfg uvcvideo btmtk cfg80211 firmware_attributes_class snd_usb_audio bluetooth wmi_bmof snd_intel_sdw_acpi gspca_main snd_hda_codec videobuf2_vmalloc videobuf2_memops i2c_i801 mei_me videobuf2_v4l2 i2c_smbus mei videobuf2_common idma64 snd_hda_core snd_usbmidi_lib videodev snd_rawmidi snd_hwdep ecdh_generic snd_seq snd_seq_device uas mc usb_storage thunderbolt igb snd_pcm thinkpad_acpi joydev processor_thermal_device_pci_legacy processor_thermal_device processor_thermal_rfim processor_thermal_mbox ledtrig_audio dca platform_profile processor_thermal_rapl snd_timer rfkill intel_rapl_common intel_soc_dts_iosf snd soundcore int3403_thermal int340x_thermal_zone int3400_thermal acpi_pad acpi_tad acpi_thermal_rel zram dm_crypt i915 rtsx_pci_sdmmc mmc_core nvme
 crct10dif_pclmul crc32_pclmul crc32c_intel ucsi_acpi hid_multitouch ghash_clmulni_intel typec_ucsi rtsx_pci nvme_core serio_raw ttm typec wmi i2c_hid_acpi i2c_hid video pinctrl_tigerlake ip6_tables ip_tables ipmi_devintf ipmi_msghandler fuse
CR2: 0000000000000000