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: 1 PID: 537476 Comm: load_policy Tainted: G          I       5.9.16-200.fc33.x86_64 #1
Hardware name: LENOVO 20DKS0GF00/20DKS0GF00, BIOS JEET85WW (1.34 ) 10/11/2018
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:ffffb216c0477c88 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000003
RDX: 0000000000000000 RSI: ffffffffbc53ac50 RDI: ffff90b4275f5c50
RBP: ffffffffbc53ac50 R08: ffffdbf2040ae208 R09: ffffdbf2040ae208
R10: 0000000000000001 R11: 0000000000000006 R12: 0000000000000000
R13: ffff90b4275f5c50 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f2f521bd800(0000) GS:ffff90b4e5c40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000118386005 CR4: 00000000003706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 policydb_destroy+0x2da/0x360
 policydb_read+0x34c/0x1fb0
 ? kmem_cache_alloc_trace+0xef/0x1f0
 ? security_load_policy+0x109/0x5c0
 security_load_policy+0x109/0x5c0
 ? copy_user_enhanced_fast_string+0xe/0x30
 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: 0033:0x7f2f52374297
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:00007ffe68b2c538 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000020 RCX: 00007f2f52374297
RDX: 00000000007fe30e RSI: 00007f2f4448e000 RDI: 0000000000000004
RBP: 0000000000000004 R08: 00007f2f5240b040 R09: 00007ffe68b2c3d0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2f4448e000
R13: 00000000007fe30e R14: 000000000000000f R15: 0000000000000003
Modules linked in: cdc_ether usbnet uinput rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp tun bridge stp llc ccm 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 nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc vfat fat squashfs loop rmi_smbus rmi_core intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel mei_wdt kvm mei_hdcp hid_sensor_rotation hid_sensor_als hid_sensor_incl_3d hid_sensor_gyro_3d hid_sensor_magn_3d hid_sensor_accel_3d hid_sensor_trigger hid_sensor_iio_common industrialio_triggered_buffer kfifo_buf industrialio iwlmvm irqbypass rapl mac80211 intel_cstate
 intel_uncore snd_usb_audio wdat_wdt libarc4 pcspkr uvcvideo wmi_bmof videobuf2_vmalloc i2c_i801 iwlwifi snd_hda_codec_conexant snd_hda_codec_hdmi videobuf2_memops snd_hda_codec_generic i2c_smbus videobuf2_v4l2 snd_hda_intel lpc_ich intel_pch_thermal videobuf2_common btusb btrtl snd_intel_dspcfg snd_hda_codec btbcm btintel snd_usbmidi_lib joydev bluetooth videodev snd_rawmidi cfg80211 snd_hda_core mc snd_hwdep snd_seq ecdh_generic snd_seq_device snd_pcm ecc mei_me mei thinkpad_acpi ledtrig_audio intel_vbtn snd_timer rfkill snd sparse_keymap soc_button_array acpi_pad soundcore zram ip_tables xfs i915 hid_plantronics wacom rtsx_pci_sdmmc mmc_core r8152 mii crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit drm_kms_helper ghash_clmulni_intel cec drm serio_raw rtsx_pci hid_sensor_hub wmi video hid_multitouch fuse
CR2: 0000000000000000