======================================
| [  332.276049] ------------[ cut here ]------------
| [  332.276108] RTNL: assertion failed at net/core/link_watch.c (59)
| [  332.276181] WARNING: CPU: 1 PID: 64 at net/core/link_watch.c:59 rfc2863_policy (net/core/link_watch.c:59 net/core/link_watch.c:76)
| [  332.276258] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth
[  332.276417] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  332.276460] Workqueue: netns cleanup_net
[  332.276492] RIP: 0010:rfc2863_policy (net/core/link_watch.c:59 net/core/link_watch.c:76)
[ 332.276530] Code: 80 3d 03 5d e8 00 00 75 ca c6 05 fa 5c e8 00 01 90 ba 3b 00 00 00 48 c7 c6 08 22 d8 a6 48 c7 c7 28 0d ca a6 e8 ef 95 57 ff 90 <0f> 0b 90 90 eb a3 83 f8 06 0f 85 14 ff ff ff b8 05 00 00 00 e9 0a
All code
========
   0:	80 3d 03 5d e8 00 00 	cmpb   $0x0,0xe85d03(%rip)        # 0xe85d0a
   7:	75 ca                	jne    0xffffffffffffffd3
   9:	c6 05 fa 5c e8 00 01 	movb   $0x1,0xe85cfa(%rip)        # 0xe85d0a
  10:	90                   	nop
  11:	ba 3b 00 00 00       	mov    $0x3b,%edx
  16:	48 c7 c6 08 22 d8 a6 	mov    $0xffffffffa6d82208,%rsi
  1d:	48 c7 c7 28 0d ca a6 	mov    $0xffffffffa6ca0d28,%rdi
  24:	e8 ef 95 57 ff       	call   0xffffffffff579618
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	eb a3                	jmp    0xffffffffffffffd3
  30:	83 f8 06             	cmp    $0x6,%eax
  33:	0f 85 14 ff ff ff    	jne    0xffffffffffffff4d
  39:	b8 05 00 00 00       	mov    $0x5,%eax
  3e:	e9                   	.byte 0xe9
  3f:	0a                   	.byte 0xa

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	eb a3                	jmp    0xffffffffffffffa9
   6:	83 f8 06             	cmp    $0x6,%eax
   9:	0f 85 14 ff ff ff    	jne    0xffffffffffffff23
   f:	b8 05 00 00 00       	mov    $0x5,%eax
  14:	e9                   	.byte 0xe9
  15:	0a                   	.byte 0xa
[  332.276654] RSP: 0018:ffffb47380237d10 EFLAGS: 00010286
[  332.276704] RAX: 0000000000000000 RBX: ffff907807aed000 RCX: 00000000ffffdfff
[  332.276759] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  332.276816] RBP: 0000000000000004 R08: ffffffffa7156968 R09: 00000000ffffdfff
[  332.276867] R10: ffffffffa7076980 R11: ffffffffa7126980 R12: dead000000000122
[  332.276926] R13: dead000000000100 R14: ffffffffa6d81b5f R15: ffff907807ae9000
[  332.277005] FS:  0000000000000000(0000) GS:ffff90783ec80000(0000) knlGS:0000000000000000
[  332.277066] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  332.277113] CR2: 00007f5bd038c2a8 CR3: 0000000007bd8001 CR4: 0000000000772ef0
[  332.277171] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  332.277226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  332.277294] PKRU: 55555554
[  332.277315] Call Trace:
[  332.277344]  <TASK>
[  332.277366] ? __warn (kernel/panic.c:748)
[  332.277400] ? rfc2863_policy (net/core/link_watch.c:59 net/core/link_watch.c:76)
[  332.277431] ? report_bug (lib/bug.c:201 lib/bug.c:219)
[  332.277465] ? prb_read_valid (kernel/printk/printk_ringbuffer.c:2183)
[  332.277498] ? handle_bug (arch/x86/kernel/traps.c:285)
[  332.277531] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1))
[  332.277575] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621)
[  332.277612] ? rfc2863_policy (net/core/link_watch.c:59 net/core/link_watch.c:76)
[  332.277642] linkwatch_do_dev (net/core/link_watch.c:180)
[  332.277672] netdev_run_todo (net/core/dev.c:10894 (discriminator 2))
[  332.277705] ? unregister_netdevice_queue (net/core/dev.c:11456)
[  332.277747] default_device_exit_batch (net/core/dev.c:12077)
[  332.277790] cleanup_net (net/core/net_namespace.c:647 (discriminator 3))
[  332.277822] process_one_work (kernel/workqueue.c:3229)
[  332.277866] worker_thread (kernel/workqueue.c:3304 kernel/workqueue.c:3391)
[  332.277903] ? __pfx_worker_thread (kernel/workqueue.c:3337)
[  332.277946] kthread (kernel/kthread.c:389)
[  332.277985] ? __pfx_kthread (kernel/kthread.c:342)
[  332.278016] ret_from_fork (arch/x86/kernel/process.c:147)
[  332.278051] ? __pfx_kthread (kernel/kthread.c:342)


Finger prints:
rfc2863_policy:linkwatch_do_dev:netdev_run_todo:default_device_exit_batch:cleanup_net