Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000008
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] SMP PTI
CPU: 7 PID: 5425 Comm: dconf worker Not tainted 5.9.16-200.fc33.x86_64 #1
Hardware name: System manufacturer System Product Name/ROG STRIX Z370-E GAMING, BIOS 0410 09/14/2017
RIP: 0010:__rb_erase_color+0x7f/0x240
Code: a8 01 0f 84 c3 01 00 00 48 83 e0 fc 75 09 5b 5d 41 5c 41 5d 41 5e c3 48 89 ea 48 89 c5 4c 8b 65 08 49 39 d4 75 a1 4c 8b 65 10 <49> 8b 5c 24 08 41 f6 04 24 01 0f 84 f8 00 00 00 49 8b 44 24 10 48
RSP: 0018:ffffab0183297c08 EFLAGS: 00010246
RAX: ffff9e82b6180120 RBX: 0000000000000000 RCX: 0000000000000014
RDX: ffff9e8299538e68 RSI: ffff9e837d1dfa60 RDI: ffff9e8299538e68
RBP: ffff9e82b6180120 R08: ffff9e82994b61e8 R09: 0000000000000011
R10: 0000000000000000 R11: ffff9e8299537da1 R12: 0000000000000000
R13: ffffffffa2283130 R14: ffff9e837d1dfa60 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff9e8396bc0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 0000000757a0e003 CR4: 00000000003706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 unlink_file_vma+0x3d/0x60
 free_pgtables+0x92/0xf0
 exit_mmap+0xa6/0x170
 mmput+0x61/0x140
 do_exit+0x2ff/0xae0
 ? futex_wake+0x6c/0x150
 do_group_exit+0x33/0xa0
 get_signal+0x179/0x8d0
 arch_do_signal+0x30/0x700
 ? new_sync_read+0x102/0x180
 exit_to_user_mode_prepare+0xf7/0x160
 syscall_exit_to_user_mode+0x31/0x1b0
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f649a1e180f
Code: Unable to access opcode bytes at RIP 0x7f649a1e17e5.
RSP: 002b:00007f64899f9a80 EFLAGS: 00000293 ORIG_RAX: 0000000000000007
RAX: fffffffffffffdfc RBX: 00007f649a4e5050 RCX: 00007f649a1e180f
RDX: 00000000ffffffff RSI: 0000000000000001 RDI: 000055fec4d8b140
RBP: 000055fec4d8b140 R08: 0000000000000000 R09: 0000000000000018
R10: 0000000000000030 R11: 0000000000000293 R12: 0000000000000001
R13: 00007f64899f9ac4 R14: 00000000ffffffff R15: 000055fec4d9e540
Modules linked in: uinput rfcomm joydev xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT hidp nf_nat_tftp nf_conntrack_tftp tun bridge stp llc wireguard libchacha20poly1305 chacha_x86_64 poly1305_x86_64 libblake2s blake2s_x86_64 ip6_udp_tunnel udp_tunnel curve25519_x86_64 libcurve25519_generic libchacha libblake2s_generic 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_tables ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep ppdev parport_pc parport vmw_vsock_vmci_transport vsock vmw_vmci vfat fat btusb btrtl btbcm btintel bluetooth pl2303 intel_rapl_msr intel_rapl_common ecdh_generic snd_hda_codec_hdmi ecc
 x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic ledtrig_audio kvm_intel rtw88_8822be snd_hda_intel snd_intel_dspcfg kvm rtw88_8822b snd_hda_codec rtw88_pci rtw88_core snd_hda_core ee1004 snd_hwdep mac80211 irqbypass iTCO_wdt snd_seq intel_pmc_bxt snd_seq_device iTCO_vendor_support mei_hdcp eeepc_wmi cfg80211 asus_wmi rapl snd_pcm sparse_keymap rfkill snd_timer nvme intel_cstate snd intel_uncore soundcore i2c_i801 wmi_bmof libarc4 i2c_smbus mei_me nvme_core mei acpi_pad nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc nfs_ssc zram ip_tables uas usb_storage raid1 i915 drm_kms_helper cec crct10dif_pclmul mxm_wmi crc32_pclmul drm crc32c_intel igb e1000e ghash_clmulni_intel dca i2c_algo_bit wmi video fuse
CR2: 0000000000000008