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kernel BUG at net/packet/af_packet.c:1521!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 29827 Comm: syz-executor1 Not tainted 4.13.0-next-20170915+ #5
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff88004f832200 task.stack: ffff880050470000
RIP: 0010:__fanout_unlink net/packet/af_packet.c:1521 [inline]
RIP: 0010:__unregister_prot_hook+0x139/0x280 net/packet/af_packet.c:367
RSP: 0018:ffff880050477700 EFLAGS: 00010216
RAX: 0000000000010000 RBX: 0000000000000001 RCX: ffffc90001957000
RDX: 000000000000014c RSI: ffffffff84410b19 RDI: ffff880037e16a28
RBP: ffff880050477740 R08: ffff880050477050 R09: ffff880050477048
R10: ffff880050476fc0 R11: 1ffff10009f066d3 R12: ffff880037e16a00
R13: ffff88003dad2440 R14: 0000000000000001 R15: dffffc0000000000
FS:  00007fa80ba63700(0000) GS:ffff88003ed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020c1fffc CR3: 000000003dbfb000 CR4: 00000000000026e0
Call Trace:
 packet_set_ring+0xe7c/0x1b70 net/packet/af_packet.c:4305
 packet_setsockopt+0x6cd/0x1e80 net/packet/af_packet.c:3660
 SYSC_setsockopt net/socket.c:1852 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1831
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x4474f9
RSP: 002b:00007fa80ba62c08 EFLAGS: 00000292 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 00000000004474f9
RDX: 0000000000000005 RSI: 0000000000000107 RDI: 0000000000000016
RBP: 0000000000000082 R08: 000000000000047e R09: 0000000000000000
R10: 0000000020001000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa80ba639c0 R15: 00007fa80ba63700
Code: 48 89 fa 48 c1 ea 03 42 80 3c 3a 00 0f 85 4e 01 00 00 4d 3b 6c c4 28 74 16 83 c3 01 e8 21 c5 2c fd 44 39 f3 75 cd e8 17 c5 2c fd <0f> 0b 31 c0 41 8d 5e ff 48 89 45 c0 e8 06 c5 2c fd 49 8d 7c dc 
RIP: __fanout_unlink net/packet/af_packet.c:1521 [inline] RSP: ffff880050477700
RIP: __unregister_prot_hook+0x139/0x280 net/packet/af_packet.c:367 RSP: ffff880050477700
---[ end trace 2d657b14ce7891ed ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..