Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000008
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] SMP PTI
CPU: 2 PID: 278527 Comm: load_policy Tainted: G        W         5.8.18-100.fc31.x86_64 #1
Hardware name: LENOVO 20KGS0BN03/20KGS0BN03, BIOS N23ET62W (1.37 ) 02/19/2019
RIP: 0010:cond_list_destroy.isra.0+0x31/0x70
Code: 41 55 49 89 fd 41 54 55 53 85 c0 74 3e 49 89 f4 31 db 89 da 83 c3 01 48 8d 04 d5 00 00 00 00 48 29 d0 49 8b 55 00 48 8d 2c c2 <48> 8b 7d 08 e8 b6 04 d9 ff 48 8b 7d 18 e8 ad 04 d9 ff 48 8b 7d 28
RSP: 0018:ffffb51f4584bcb0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 000000000040001f
RDX: 0000000000000000 RSI: ffff9a1ebf611540 RDI: ffff9a1ebf611538
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffff9a1ed0d0ef00 R11: fffff3eec49a32a0 R12: ffff9a1ebf611540
R13: ffff9a1ebf611538 R14: ffffb51f4584be18 R15: ffff9a1ebf611300
FS:  00007f09c08966c0(0000) GS:ffff9a1f19680000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 000000024cdbc001 CR4: 00000000003606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 policydb_destroy+0x15d/0x260
 policydb_read+0x343/0x1b70
 ? security_load_policy+0x110/0x5c0
 security_load_policy+0x110/0x5c0
 ? copy_user_enhanced_fast_string+0xe/0x30
 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: 0033:0x7f09c0a454a7
Code: 64 89 02 48 c7 c0 ff ff ff ff eb bb 0f 1f 80 00 00 00 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:00007ffc020e33b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000000001f RCX: 00007f09c0a454a7
RDX: 00000000008a3110 RSI: 00007f09b300a000 RDI: 0000000000000004
RBP: 0000000000000004 R08: 00000000ffffffff R09: 00007ffc020e3250
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f09b300a000
R13: 00000000008a3110 R14: 000000000000000f R15: 0000000000000003
Modules linked in: snd_usb_audio snd_usbmidi_lib snd_rawmidi uinput rfcomm 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 ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc vfat fat x86_pkg_temp_thermal intel_powerclamp coretemp iwlmvm snd_soc_skl snd_hda_codec_hdmi snd_soc_sst_ipc kvm_intel snd_soc_sst_dsp snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi mac80211 snd_soc_core snd_hda_codec_realtek kvm snd_compress snd_hda_codec_generic libarc4 ac97_bus snd_pcm_dmaengine snd_hda_intel snd_intel_dspcfg rmi_smbus rmi_core snd_hda_codec iTCO_wdt irqbypass intel_pmc_bxt
 mei_wdt mei_hdcp iTCO_vendor_support uvcvideo crct10dif_pclmul intel_rapl_msr crc32_pclmul ghash_clmulni_intel videobuf2_vmalloc snd_hda_core rapl btusb videobuf2_memops iwlwifi intel_cstate videobuf2_v4l2 snd_hwdep btrtl btbcm intel_uncore videobuf2_common snd_seq btintel snd_seq_device videodev snd_pcm bluetooth wmi_bmof cfg80211 intel_wmi_thunderbolt i2c_i801 mc joydev snd_timer thunderbolt i2c_smbus ecdh_generic mei_me thinkpad_acpi ecc ucsi_acpi mei processor_thermal_device intel_xhci_usb_role_switch intel_pch_thermal typec_ucsi intel_rapl_common ledtrig_audio roles intel_soc_dts_iosf typec snd soundcore int3403_thermal rfkill int340x_thermal_zone int3400_thermal acpi_pad acpi_thermal_rel binfmt_misc ip_tables i915 i2c_algo_bit drm_kms_helper crc32c_intel e1000e serio_raw cec nvme drm nvme_core uas usb_storage wmi video i2c_hid hid_multitouch fuse
CR2: 0000000000000008