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: 310674 Comm: load_policy Tainted: G           OE     5.11.18-300.fc34.x86_64 #1
Hardware name: LENOVO 2464A26/2464A26, BIOS G3ETA9WW(2.69) 09/28/2017
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:ffffb6aa0ec07c08 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000004
RDX: 0000000000000000 RSI: ffffffff93565480 RDI: ffff8f9e97242a08
RBP: ffffffff93565480 R08: fffff9218452fa08 R09: fffff9218452fa08
R10: 0000000000114aa0 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8f9e97242a08 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fb71122f200(0000) GS:ffff8f9f578c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000108cfc005 CR4: 00000000001706e0
Call Trace:
 policydb_destroy+0x2da/0x360
 policydb_read+0x34f/0x1f90
 ? kmem_cache_alloc_trace+0xef/0x1e0
 ? security_load_policy+0x80/0x4b0
 security_load_policy+0x80/0x4b0
 ? copy_user_enhanced_fast_string+0xe/0x40
 sel_write_load+0x11b/0xac0
 ? selinux_file_permission+0x104/0x150
 vfs_write+0xbf/0x270
 ksys_write+0x4f/0xc0
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fb7113bf387
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:00007fff7fd607f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000021 RCX: 00007fb7113bf387
RDX: 0000000000356e9c RSI: 00007fb7039a7000 RDI: 0000000000000004
RBP: 0000000000000004 R08: 0000000000000000 R09: 00007fff7fd60690
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000356e9c
R13: 00007fb7039a7000 R14: 00007fb7114c61a0 R15: 0000000000000003
Modules linked in: xt_addrtype xt_nat 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 uinput exfat vfat fat snd_seq_dummy snd_hrtimer ip6t_REJECT xt_multiport xt_cgroup xt_mark xt_owner xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nft_objref nf_conntrack_tftp bridge stp llc ccm 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 bnep sunrpc squashfs loop intel_rapl_msr at24 iTCO_wdt mei_hdcp intel_pmc_bxt snd_hda_codec_hdmi snd_hda_codec_realtek intel_rapl_common
 iTCO_vendor_support snd_hda_codec_generic snd_hda_intel snd_intel_dspcfg x86_pkg_temp_thermal intel_powerclamp soundwire_intel coretemp kvm_intel soundwire_generic_allocation snd_soc_core kvm irqbypass rapl intel_cstate intel_uncore uvcvideo snd_compress snd_pcm_dmaengine wmi_bmof soundwire_cadence snd_hda_codec videobuf2_vmalloc i2c_i801 videobuf2_memops snd_hda_core videobuf2_v4l2 pcspkr iwldvm i2c_smbus ac97_bus snd_hwdep mac80211 videobuf2_common btusb btrtl joydev btbcm btintel libarc4 bluetooth snd_seq iwlwifi ecdh_generic ecc snd_seq_device snd_pcm cfg80211 thinkpad_acpi platform_profile mei_me snd_timer ledtrig_audio mei lpc_ich snd soundcore rfkill binfmt_misc zram ip_tables dm_crypt mmc_block i915 rtsx_pci_sdmmc mmc_core hid_logitech_hidpp i2c_algo_bit crct10dif_pclmul crc32_pclmul drm_kms_helper crc32c_intel cec ghash_clmulni_intel drm rtsx_pci r8169 serio_raw wmi video uas usb_storage hid_logitech_dj v4l2loopback(OE) videodev mc fuse
CR2: 0000000000000000