BUG: unable to handle kernel paging request at ffffde2023306263
#PF error: [normal kernel read fault]
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 13244 Comm: kworker/u4:12 Not tainted 5.1.0-rc7+ #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:444 [inline]
RIP: 0010:iptunnel_xmit+0x6ed/0x980 net/ipv4/ip_tunnel_core.c:94
Code: c1 e9 03 80 3c 11 00 0f 85 72 02 00 00 48 03 1c c5 60 a0 6b 88 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 02 00 00 48 8d 7b 10 4d 63 e4 48 b8 00 00 00
RSP: 0018:ffff8880ae907888 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: ffff110119831300 RCX: 1ffffffff10d740d
RDX: 1fffe22023306263 RSI: ffffffff83317f8c RDI: ffff110119831318
RBP: ffff8880ae9078e8 R08: ffff888062dfa1c0 R09: ffffed1015d25bc8
R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: 00000000000000fc
R13: ffff888087db6980 R14: ffff888099b6fbd4 R15: ffff8880a0754800
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffde2023306263 CR3: 00000000a86a0000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 udp_tunnel_xmit_skb+0x236/0x310 net/ipv4/udp_tunnel.c:191
 tipc_udp_xmit.isra.0+0x805/0xcc0 net/tipc/udp_media.c:181
 tipc_udp_send_msg+0x295/0x4a0 net/tipc/udp_media.c:247
 tipc_bearer_xmit_skb+0x172/0x360 net/tipc/bearer.c:503
 tipc_disc_timeout+0x933/0xd60 net/tipc/discover.c:332
 call_timer_fn+0x190/0x720 kernel/time/timer.c:1325
 expire_timers kernel/time/timer.c:1362 [inline]
 __run_timers kernel/time/timer.c:1681 [inline]
 __run_timers kernel/time/timer.c:1649 [inline]
 run_timer_softirq+0x652/0x1700 kernel/time/timer.c:1694
 __do_softirq+0x266/0x95a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:374 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:414
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x14a/0x570 arch/x86/kernel/apic/apic.c:1062
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:596 [inline]
RIP: 0010:batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:419 [inline]
RIP: 0010:batadv_nc_worker+0x133/0x760 net/batman-adv/network-coding.c:730
Code: f4 86 48 c7 c7 c0 5b 9a 88 e8 19 df 62 fa e8 84 0b 69 fa 31 ff 41 89 c4 89 c6 e8 28 d7 7b fa 45 85 e4 58 74 20 e8 9d d5 7b fa <44> 0f b6 25 5c d2 65 02 31 ff 44 89 e6 e8 cb d6 7b fa 45 84 e4 0f
RSP: 0018:ffff8880625afce0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff888062dfa1c0 RBX: ffff88809f97ca80 RCX: ffffffff86f4b708
RDX: 0000000000000000 RSI: ffffffff86f4b713 RDI: 0000000000000005
RBP: ffff8880625afd30 R08: ffff888062dfa1c0 R09: ffffffff895e69d4
R10: ffff888062dfaa90 R11: ffff888062dfa1c0 R12: 0000000000000001
R13: 00000000000001fe R14: ffff88806f269370 R15: dffffc0000000000
 process_one_work+0x98e/0x1790 kernel/workqueue.c:2269
 worker_thread+0x98/0xe40 kernel/workqueue.c:2415
 kthread+0x357/0x430 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
CR2: ffffde2023306263
---[ end trace 33ba2131dea4f8d5 ]---
RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:444 [inline]
RIP: 0010:iptunnel_xmit+0x6ed/0x980 net/ipv4/ip_tunnel_core.c:94
Code: c1 e9 03 80 3c 11 00 0f 85 72 02 00 00 48 03 1c c5 60 a0 6b 88 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 02 00 00 48 8d 7b 10 4d 63 e4 48 b8 00 00 00
RSP: 0018:ffff8880ae907888 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: ffff110119831300 RCX: 1ffffffff10d740d
RDX: 1fffe22023306263 RSI: ffffffff83317f8c RDI: ffff110119831318
RBP: ffff8880ae9078e8 R08: ffff888062dfa1c0 R09: ffffed1015d25bc8
R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: 00000000000000fc
R13: ffff888087db6980 R14: ffff888099b6fbd4 R15: ffff8880a0754800
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffde2023306263 CR3: 00000000a86a0000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400