BUG: unable to handle page fault for address: ffffde202329033b
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 7676 Comm: syz-fuzzer Not tainted 5.1.0+ #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:444 [inline]
RIP: 0010:iptunnel_xmit+0x6e5/0x970 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 70 6e 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: 0000:ffff8880ae909878 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffff1101194819c0 RCX: 1ffffffff10dce0d
RDX: 1fffe2202329033b RSI: ffffffff83344b6c RDI: ffff1101194819d8
RBP: ffff8880ae9098d8 R08: ffff8880a8dfc4c0 R09: ffffed1015d26be0
R10: ffffed1015d26bdf R11: ffff8880ae935efb R12: 00000000000000fc
R13: ffff88808a55e7c0 R14: ffff888069a8a514 R15: ffff888090c56200
FS:  0000000001752948(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffde202329033b CR3: 000000008dfeb000 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+0x196/0x720 kernel/time/timer.c:1322
 expire_timers kernel/time/timer.c:1366 [inline]
 __run_timers kernel/time/timer.c:1685 [inline]
 __run_timers kernel/time/timer.c:1653 [inline]
 run_timer_softirq+0x66f/0x1740 kernel/time/timer.c:1698
 __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:1067
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:806
 </IRQ>
RIP: 0033:0x41e315
Code: 08 45 19 d2 45 21 d0 41 f6 c0 10 40 0f 95 c7 44 89 c9 e9 ec fe ff ff 8b 0d a4 39 35 01 85 c9 7e 09 48 8b 4b 30 49 39 c8 73 42 <84> 07 41 0f b6 0c 31 44 84 d1 75 2c f0 44 08 17 0f b6 4b 62 f6 c1
RSP: 002b:00007ffd4c2a1410 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 000000c422272600 RBX: 00007fbb5edfd730 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00007fbb5edd2fb8 RDI: 00007fbb5edd2fbb
RBP: 00007ffd4c2a1430 R08: 0000000000000018 R09: 0000000000000003
R10: 0000000000000001 R11: 000000c422272600 R12: 000000c420572000
R13: 000000000000001c R14: 000000000045b6a0 R15: 0000000000000000
Modules linked in:
CR2: ffffde202329033b
---[ end trace 2f09648795079e8d ]---
RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:444 [inline]
RIP: 0010:iptunnel_xmit+0x6e5/0x970 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 70 6e 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: 0000:ffff8880ae909878 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffff1101194819c0 RCX: 1ffffffff10dce0d
RDX: 1fffe2202329033b RSI: ffffffff83344b6c RDI: ffff1101194819d8
RBP: ffff8880ae9098d8 R08: ffff8880a8dfc4c0 R09: ffffed1015d26be0
R10: ffffed1015d26bdf R11: ffff8880ae935efb R12: 00000000000000fc
R13: ffff88808a55e7c0 R14: ffff888069a8a514 R15: ffff888090c56200
FS:  0000000001752948(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffde202329033b CR3: 000000008dfeb000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400