Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000020
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 8000001feb4be067 P4D 8000001feb4be067 PUD 1feb4bd067 PMD 0 
Oops: 0000 [#1] SMP PTI
CPU: 9 PID: 1495 Comm: anydesk Tainted: P           OE     5.3.7-301.fc31.x86_64 #1
Hardware name: Gigabyte Technology Co., Ltd. X299 UD4 Pro/X299 UD4 Pro-CF, BIOS F1 07/11/2017
RIP: 0010:avtab_search_node+0xb0/0xe0
Code: c0 6b ca eb 85 89 c6 c1 ee 0d 31 f0 69 c0 35 ae b2 c2 89 c6 c1 ee 10 31 f0 48 8b 37 23 47 10 48 98 48 8b 04 c6 48 85 c0 74 2f <66> 39 10 74 0c 77 1e 48 8b 40 10 48 85 c0 75 f0 c3 66 39 48 02 75
RSP: 0018:ffffa9e1c16a7bf0 EFLAGS: 00010202
RAX: 0000000000000020 RBX: ffff893554027a80 RCX: 0000000000000124
RDX: 00000000000010a7 RSI: ffff8935534c0000 RDI: ffffffff98ccd270
RBP: 0000000000000123 R08: 000000000000000f R09: 0000000000000707
R10: 0000000070ac7666 R11: 0000000000000000 R12: ffff893554027a88
R13: ffffa9e1c16a7d4c R14: ffffa9e1c16a7d60 R15: ffffffff98ccd2b0
FS:  00007f524133eec0(0000) GS:ffff89355fa40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000020 CR3: 0000001fe57dc002 CR4: 00000000003606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 context_struct_compute_av+0x1e3/0x4a0
 security_compute_av+0x147/0x2b0
 avc_compute_av+0x3e/0x1b0
 ? native_usergs_sysret64+0x10/0x10
 ? __switch_to+0x10d/0x440
 avc_has_perm+0x12d/0x1d0
 ? __schedule+0x2a7/0x680
 selinux_inode_getattr+0x6e/0x90
 security_inode_getattr+0x3a/0x50
 vfs_getattr+0x1d/0x50
 vfs_statx_fd+0x45/0x90
 ? ep_show_fdinfo+0x80/0x80
 __do_sys_newfstat+0x2d/0x70
 ? __x64_sys_epoll_ctl+0xe5/0x670
 do_syscall_64+0x5f/0x1a0
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f5241c46929
Code: ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 41 89 f8 89 f7 48 89 d6 41 83 f8 01 77 2e b8 05 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 07 c3 66 0f 1f 44 00 00 48 8b 15 29 05 0d 00
RSP: 002b:00007ffc74186738 EFLAGS: 00000246 ORIG_RAX: 0000000000000005
RAX: ffffffffffffffda RBX: 00007ffc74187078 RCX: 00007f5241c46929
RDX: 00007ffc74186750 RSI: 00007ffc74186750 RDI: 0000000000000022
RBP: 00007ffc74186818 R08: 0000000000000001 R09: 00000000000000ca
R10: 00007ffc74186740 R11: 0000000000000246 R12: 0000000000002001
R13: 0000000000000004 R14: 0000000002bd7940 R15: 00007ffc741873b0
Modules linked in: ccm xt_CHECKSUM xt_MASQUERADE nf_nat_tftp nf_conntrack_tftp tun bridge stp llc nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_REJECT nf_reject_ipv6 ip6t_rpfilter ipt_REJECT nf_reject_ipv4 xt_conntrack ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter it87 hwmon_vid sunrpc nvidia_drm(POE) nvidia_modeset(POE) nvidia(POE) intel_rapl_msr intel_rapl_common isst_if_common snd_hda_codec_hdmi nfit snd_hda_codec_realtek libnvdimm snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp ledtrig_audio coretemp kvm_intel snd_hda_intel snd_hda_codec kvm mt7601u snd_hda_core snd_hwdep mac80211 irqbypass drm_kms_helper snd_seq snd_seq_device crct10dif_pclmul cfg80211 crc32_pclmul drm snd_pcm ghash_clmulni_intel ipmi_devintf
 intel_cstate snd_timer rfkill snd libarc4 intel_uncore ipmi_msghandler ioatdma i2c_i801 soundcore intel_rapl_perf wdat_wdt wmi_bmof intel_wmi_thunderbolt mei_me mei dca ip_tables mxm_wmi e1000e crc32c_intel wmi uas usb_storage fuse
CR2: 0000000000000020