Description of problem:
Can't be reproduced - happened upon system boot.

Additional info:
reporter:       libreport-2.17.11
BUG: kernel NULL pointer dereference, address: 000000000000014e
fbcon: Taking over console
#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: 4 PID: 29645 Comm: kworker/u32:6 Not tainted 6.3.11-200.fc38.x86_64 #1
Hardware name: HP Dev One Notebook PC/8A78, BIOS F.05 06/14/2022
Workqueue: netns cleanup_net
RIP: 0010:count_subheaders.part.0+0x33/0x230
Code: 0f 84 18 02 00 00 41 57 41 56 41 55 45 31 ed 41 54 45 31 e4 55 48 89 fd 53 48 83 ec 30 48 8b 5d 18 48 85 db 0f 84 b8 01 00 00 <48> 83 3b 00 0f 84 df 01 00 00 45 31 f6 45 31 c0 44 89 6c 24 08 49
RSP: 0018:ffffabe8cf3cbd70 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000014e RCX: 0000000000001388
RDX: 0000000080000000 RSI: ffffabe8cf3cbe48 RDI: ffff93f84abe0980
RBP: ffff93f84abe0980 R08: 0000000000000286 R09: 000000008010000f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffabe8cf3cbe48 R15: ffff93f847608060
FS:  0000000000000000(0000) GS:ffff94070e700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000014e CR3: 0000000361022000 CR4: 0000000000750ee0
PKRU: 55555554
Call Trace:
 <TASK>
 ? __die+0x23/0x70
 ? page_fault_oops+0x171/0x4e0
 ? find_entry.isra.0+0x61/0x90
 ? exc_page_fault+0x7c/0x180
 ? asm_exc_page_fault+0x26/0x30
 ? count_subheaders.part.0+0x33/0x230
 unregister_sysctl_table.part.0+0x22/0x90
 devinet_exit_net+0x20/0xc0
 ops_exit_list+0x33/0x70
 cleanup_net+0x221/0x3b0
 process_one_work+0x1c7/0x3d0
 worker_thread+0x51/0x390
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xde/0x110
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x2c/0x50
 </TASK>
Modules linked in: 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 uinput rfcomm snd_seq_dummy snd_hrtimer sunrpc 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 binfmt_misc vfat fat snd_sof_amd_rembrandt snd_sof_amd_renoir rtw88_8822ce snd_sof_amd_acp rtw88_8822c snd_ctl_led snd_sof_pci snd_sof_xtensa_dsp snd_hda_codec_realtek rtw88_pci snd_sof snd_hda_codec_generic rtw88_core ledtrig_audio snd_hda_codec_hdmi snd_sof_utils intel_rapl_msr snd_soc_core intel_rapl_common uvcvideo snd_hda_intel mac80211 edac_mce_amd snd_intel_dspcfg snd_intel_sdw_acpi snd_compress uvc ac97_bus videobuf2_vmalloc snd_hda_codec kvm_amd snd_pcm_dmaengine videobuf2_memops videobuf2_v4l2 videobuf2_common snd_pci_ps snd_hda_core
 snd_rpl_pci_acp6x snd_pci_acp6x btusb btrtl kvm snd_hwdep btbcm videodev btintel btmtk snd_seq snd_seq_device snd_pcm snd_pci_acp5x hp_wmi libarc4 snd_rn_pci_acp3x irqbypass snd_acp_config bluetooth sparse_keymap snd_timer snd_soc_acpi cfg80211 rapl k10temp platform_profile wmi_bmof mc pcspkr i2c_piix4 snd_pci_acp3x snd rfkill soundcore cm32181 industrialio wireless_hotkey acpi_cpufreq acpi_tad joydev loop zram cdc_mbim cdc_wdm cdc_ncm cdc_ether usbnet mii uas usb_storage amdgpu i2c_algo_bit drm_ttm_helper ttm nvme iommu_v2 drm_buddy gpu_sched nvme_core drm_display_helper crct10dif_pclmul video crc32_pclmul hid_multitouch crc32c_intel ccp cec polyval_clmulni polyval_generic ghash_clmulni_intel sha512_ssse3 wdat_wdt sp5100_tco nvme_common wmi i2c_hid_acpi i2c_hid serio_raw ip6_tables ip_tables fuse
CR2: 000000000000014e