======================================
| # udp rx:      0 MB/s      512 calls/s
| # udp tx:    542 MB/s     9193 calls/s   9193 msg/s
| # IPv6
| [  126.448493] general protection fault, probably for non-canonical address 0x6e753e2d74656e26: 0000 [#1] PREEMPT SMP NOPTI
[  126.449914] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  126.450781] Workqueue: netns cleanup_net
[  126.451108] RIP: 0010:vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4613 drivers/net/vxlan/vxlan_core.c:4636) vxlan
[ 126.451566] Code: 08 48 8b 00 48 8b 38 48 8d 48 d0 48 8d 5f d0 48 39 c5 75 2d 48 89 e7 e8 5b fd cb cc eb b4 48 8b 79 50 48 89 e6 e8 6d fe ff ff <48> 8b 43 30 48 89 d9 48 8d 50 d0 48 8d 43 30 48 39 c5 74 d6 48 89
All code
========
   0:	08 48 8b             	or     %cl,-0x75(%rax)
   3:	00 48 8b             	add    %cl,-0x75(%rax)
   6:	38 48 8d             	cmp    %cl,-0x73(%rax)
   9:	48 d0 48 8d          	rex.W rorb -0x73(%rax)
   d:	5f                   	pop    %rdi
   e:	d0 48 39             	rorb   0x39(%rax)
  11:	c5 75 2d             	(bad)
  14:	48 89 e7             	mov    %rsp,%rdi
  17:	e8 5b fd cb cc       	call   0xffffffffcccbfd77
  1c:	eb b4                	jmp    0xffffffffffffffd2
  1e:	48 8b 79 50          	mov    0x50(%rcx),%rdi
  22:	48 89 e6             	mov    %rsp,%rsi
  25:	e8 6d fe ff ff       	call   0xfffffffffffffe97
  2a:*	48 8b 43 30          	mov    0x30(%rbx),%rax		<-- trapping instruction
  2e:	48 89 d9             	mov    %rbx,%rcx
  31:	48 8d 50 d0          	lea    -0x30(%rax),%rdx
  35:	48 8d 43 30          	lea    0x30(%rbx),%rax
  39:	48 39 c5             	cmp    %rax,%rbp
  3c:	74 d6                	je     0x14
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 8b 43 30          	mov    0x30(%rbx),%rax
   4:	48 89 d9             	mov    %rbx,%rcx
   7:	48 8d 50 d0          	lea    -0x30(%rax),%rdx
   b:	48 8d 43 30          	lea    0x30(%rbx),%rax
   f:	48 39 c5             	cmp    %rax,%rbp
  12:	74 d6                	je     0xffffffffffffffea
  14:	48                   	rex.W
  15:	89                   	.byte 0x89
[  126.452967] RSP: 0018:ffffb5db00063c90 EFLAGS: 00010216
[  126.453375] RAX: 0000000000000001 RBX: 6e753e2d74656df6 RCX: ffffffff8dcf435a
[  126.453916] RDX: 6e753e2d74656df6 RSI: ffffffff8e17b8c0 RDI: ffffffff8dcf438a
[  126.454463] RBP: ffff9b6fc24e4000 R08: 0000000000000001 R09: 0000000000000001
[  126.455011] R10: 0000000000000004 R11: 0000000000000001 R12: ffff9b6fc24e1000
[  126.455558] R13: 0000000000000006 R14: ffffb5db00063d28 R15: ffffffffc053c800
[  126.456107] FS:  0000000000000000(0000) GS:ffff9b6fffd00000(0000) knlGS:0000000000000000
[  126.456726] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  126.457172] CR2: 00007fe8529f2000 CR3: 000000003dc60005 CR4: 0000000000770ef0
[  126.457709] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  126.458261] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  126.458807] PKRU: 55555554
[  126.459021] Call Trace:
[  126.459223]  <TASK>
[  126.459409] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) 
[  126.459680] ? exc_general_protection (arch/x86/kernel/traps.c:698 arch/x86/kernel/traps.c:643) 
[  126.460055] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:564) 
[  126.460444] ? vxlan_netdevice_event (drivers/net/vxlan/vxlan_core.c:4613 drivers/net/vxlan/vxlan_core.c:4636) vxlan
[  126.460858] notifier_call_chain (kernel/notifier.c:93) 
[  126.461186] unregister_netdevice_many_notify (net/core/dev.c:11095) 
[  126.461607] default_device_exit_batch (net/core/dev.c:11629) 
[  126.461981] cleanup_net (net/core/net_namespace.c:636 (discriminator 3)) 
[  126.462261] ? process_one_work (kernel/workqueue.c:2606) 
[  126.462586] process_one_work (kernel/workqueue.c:2633) 
[  126.462892] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[  126.463186] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[  126.463524] kthread (kernel/kthread.c:388) 
[  126.463776] ? __pfx_kthread (kernel/kthread.c:341) 
[  126.464067] ret_from_fork (arch/x86/kernel/process.c:147) 
[  126.464356] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
vxlan_netdevice_event:notifier_call_chain:unregister_netdevice_many_notify:default_device_exit_batch