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: 3 PID: 1682424 Comm: load_policy Tainted: P        W  OE     5.9.15-200.fc33.x86_64 #1
Hardware name: Dell Inc. Vostro 430/054KM3, BIOS 2.4.0 01/13/2011
RIP: 0010:hashtab_map+0x27/0x70
Code: 00 00 00 66 66 66 66 90 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:ffffaa5f882ffc88 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000003
RDX: 0000000000000000 RSI: ffffffffa953ac20 RDI: ffff9e1f90c7c450
RBP: ffffffffa953ac20 R08: fffff91cc4031d08 R09: fffff91cc4031d08
R10: 0000000000000001 R11: 0000000000000006 R12: 0000000000000000
R13: ffff9e1f90c7c450 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f55f12e9800(0000) GS:ffff9e20b7cc0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000010f808000 CR4: 00000000000006e0
Call Trace:
 policydb_destroy+0x2da/0x360
 policydb_read+0x34c/0x1fb0
 ? _cond_resched+0x16/0x40
 ? kmem_cache_alloc_trace+0xef/0x1f0
 ? security_load_policy+0x109/0x5c0
 security_load_policy+0x109/0x5c0
 ? copy_user_generic_string+0x2c/0x40
 sel_write_load+0xeb/0x1b0
 vfs_write+0xc7/0x210
 ksys_write+0x4f/0xc0
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f55f14a0297
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:00007ffd46d48048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000020 RCX: 00007f55f14a0297
RDX: 00000000007ec451 RSI: 00007f55e35cc000 RDI: 0000000000000004
RBP: 0000000000000004 R08: 00007f55f1537040 R09: 00007ffd46d47ee0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55e35cc000
R13: 00000000007ec451 R14: 000000000000000f R15: 0000000000000003
Modules linked in: xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nft_compat nf_nat_tftp nf_conntrack_tftp nft_counter tun 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 ebtable_nat ebtable_broute nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 bridge stp llc ip_set rfkill ebtable_filter ebtables nf_tables nfnetlink xfs nvidia_drm(POE) nvidia_modeset(POE) nvidia_uvm(POE) intel_powerclamp coretemp joydev kvm_intel kvm snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio iTCO_wdt nvidia(POE) mei_wdt snd_hda_codec_hdmi intel_pmc_bxt iTCO_vendor_support eeprom dcdbas snd_hda_intel irqbypass gpio_ich snd_intel_dspcfg intel_cstate snd_hda_codec dell_smm_hwmon intel_uncore snd_hda_core i2c_i801 snd_hwdep pcspkr drm_kms_helper i2c_smbus snd_seq i7core_edac snd_seq_device mei_me cec snd_pcm mei snd_timer snd acpi_cpufreq lpc_ich soundcore drm
 binfmt_misc zram ip_tables crc32c_intel broadcom bcm_phy_lib serio_raw tg3 dm_multipath sunrpc be2iscsi bnx2i cnic uio cxgb4i cxgb4 cxgb3i cxgb3 mdio libcxgbi libcxgb qla4xxx iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi fuse scsi_transport_iscsi
CR2: 0000000000000000