Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000304
#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: 1577 Comm: vpnagentd Tainted: G        W         5.5.17-200.fc31.x86_64 #1
Hardware name: System manufacturer System Product Name/H110M-A, BIOS 0503 01/25/2016
RIP: 0010:__netlink_dump_start+0x159/0x260
Code: 18 48 89 85 68 03 00 00 48 8b 43 20 48 89 85 70 03 00 00 0f b7 43 28 4c 89 a5 48 03 00 00 66 89 85 82 03 00 00 49 8b 44 24 40 <8b> 80 04 03 00 00 c0 e8 07 88 85 84 03 00 00 48 8b 03 48 85 c0 74
RSP: 0018:ffffb1c203663c40 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffffb1c203663c80 RCX: 0000000000000000
RDX: ffffb1c200663ab0 RSI: 0000000077d46700 RDI: ffff989dea189bc0
RBP: ffff989dea189800 R08: ffff989dea189b48 R09: ffff98a1a45acbb0
R10: ffff98a1abd19c48 R11: 0000000000000000 R12: ffff989e98bb1200
R13: ffff98a17d3d5c00 R14: 00000000fffffff0 R15: 0000000000000000
FS:  00007f7e77d46700(0000) GS:ffff98a1abd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000304 CR3: 00000003d7d32003 CR4: 00000000002606e0
Call Trace:
 ? rtnl_fill_ifinfo+0x1030/0x1030
 rtnetlink_rcv_msg+0x22c/0x360
 ? copyout+0x28/0x30
 ? _copy_to_iter+0xa1/0x410
 ? rtnl_fill_ifinfo+0x1030/0x1030
 ? rtnl_calcit.isra.0+0x110/0x110
 netlink_rcv_skb+0x49/0x110
 netlink_unicast+0x191/0x230
 netlink_sendmsg+0x243/0x480
 sock_sendmsg+0x5e/0x60
 __sys_sendto+0xee/0x160
 ? __sys_socket+0x98/0xf0
 __x64_sys_sendto+0x25/0x30
 do_syscall_64+0x5b/0x1c0
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f7e85d54c84
Code: b2 41 f8 ff 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 30 89 ef 48 89 44 24 08 e8 d8 41 f8 ff 48 8b
RSP: 002b:00007f7e77d439e0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f7e77d44b80 RCX: 00007f7e85d54c84
RDX: 0000000000000014 RSI: 00007f7e77d44ab0 RDI: 000000000000002a
RBP: 0000000000000000 R08: 00007f7e77d44a70 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007f7e77d44a70
R13: 00007f7e77d44ab0 R14: 0000000000000000 R15: 00007f7e77d43a20
Modules linked in: xt_nat veth vxlan ip6_udp_tunnel udp_tunnel xt_policy xt_mark xt_u32 nf_conntrack_netlink xt_addrtype br_netfilter xt_CHECKSUM xt_MASQUERADE nf_nat_tftp nf_conntrack_tftp 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 libcrc32c tun bridge stp llc ccm ip_set nfnetlink overlay ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter sunrpc squashfs zstd_decompress loop intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal mt7601u intel_powerclamp coretemp mac80211 kvm_intel kvm iTCO_wdt iTCO_vendor_support snd_hda_codec_hdmi mei_hdcp snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_intel cfg80211 snd_intel_dspcfg snd_hda_codec irqbypass crct10dif_pclmul
 crc32_pclmul snd_hda_core snd_hwdep snd_seq snd_seq_device libarc4 ghash_clmulni_intel snd_pcm intel_cstate joydev eeepc_wmi snd_timer asus_wmi intel_uncore sparse_keymap snd intel_rapl_perf rfkill i2c_i801 soundcore mei_me pcspkr wmi_bmof mxm_wmi mei acpi_pad ip_tables i915 i2c_algo_bit drm_kms_helper drm crc32c_intel r8169 serio_raw video wmi fuse
CR2: 0000000000000304