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] SMP PTI
CPU: 0 PID: 17087 Comm: load_policy Not tainted 5.8.15-301.fc33.x86_64 #1
Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
RIP: 0010:hashtab_map+0x27/0x70
Code: 00 00 00 0f 1f 44 00 00 8b 47 08 85 c0 74 60 41 56 45 31 f6 41 55 49 89 fd 41 54 49 89 d4 55 48 89 f5 53 49 8b 55 00 44 89 f0 <48> 8b 1c c2 48 85 db 75 0b eb 25 48 8b 5b 10 48 85 db 74 1c 48 8b
RSP: 0018:ffffb3eb82b93c98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000003
RDX: 0000000000000000 RSI: ffffffff925564c0 RDI: ffff95615c97cda0
RBP: ffffffff925564c0 R08: ffffe48c81edb008 R09: ffffe48c81edb008
R10: 0000000000000001 R11: 0000000000000006 R12: 0000000000000000
R13: ffff95615c97cda0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fe83709a800(0000) GS:ffff9561bdc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007b688004 CR4: 00000000000606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 policydb_destroy+0x2da/0x360
 policydb_read+0x357/0x1b80
 ? kvm_sched_clock_read+0xd/0x20
 ? exc_page_fault+0x81/0x1a0
 ? _cond_resched+0x16/0x40
 ? security_load_policy+0x109/0x5c0
 security_load_policy+0x109/0x5c0
 ? copy_user_generic_string+0x2c/0x40
 sel_write_load+0xeb/0x1b0
 vfs_write+0xc7/0x1f0
 ksys_write+0x4f/0xc0
 do_syscall_64+0x4d/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fe837250497
Code: 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
RSP: 002b:00007ffd9d514a48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000020 RCX: 00007fe837250497
RDX: 00000000007ea0ca RSI: 00007fe8368af000 RDI: 0000000000000004
RBP: 0000000000000004 R08: 00007fe8372e7040 R09: 00007ffd9d5148e0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe8368af000
R13: 00000000007ea0ca R14: 000000000000000f R15: 0000000000000003
Modules linked in: xt_conntrack xt_MASQUERADE xt_addrtype 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 ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_tables ip6table_filter ip6_tables iptable_filter ip_tables nf_conntrack_netlink nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 veth br_netfilter bridge stp llc overlay uinput ip_set rfkill nfnetlink sunrpc snd_intel8x0 snd_ac97_codec intel_rapl_msr joydev intel_rapl_common intel_powerclamp ac97_bus snd_seq rapl snd_seq_device snd_pcm snd_timer pcspkr snd soundcore i2c_piix4 vboxguest zram vmwgfx drm_kms_helper cec ttm drm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel e1000 serio_raw ata_generic pata_acpi video fuse [last unloaded: ip_tables]
CR2: 0000000000000000