======================================
| # │ geneve │     4 │     4 │ inherit 0x60 │  inherit 141 │ false │     OK │
| [  183.372100][   T70] ------------[ cut here ]------------
| [ 183.372531][ T70] WARNING: CPU: 2 PID: 70 at drivers/net/geneve.c:1914 geneve_exit_batch_rtnl (drivers/net/geneve.c:1914 (discriminator 1)) geneve
| [  183.373172][   T70] Modules linked in: geneve vxlan ip6_udp_tunnel udp_tunnel ip6_gre ip_gre gre
[  183.374189][   T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  183.374914][   T70] Workqueue: netns cleanup_net
[ 183.375223][ T70] RIP: 0010:geneve_exit_batch_rtnl (drivers/net/geneve.c:1914 (discriminator 1)) geneve
[ 183.375646][ T70] Code: 00 48 8b 83 b8 00 00 00 48 8d 98 48 ff ff ff 48 39 44 24 10 75 a5 48 83 c4 20 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 90 <0f> 0b 90 eb b9 e8 d2 cd 32 d7 e9 2d fe ff ff 48 89 cf 48 89 4c 24
All code
========
   0:	00 48 8b             	add    %cl,-0x75(%rax)
   3:	83 b8 00 00 00 48 8d 	cmpl   $0xffffff8d,0x48000000(%rax)
   a:	98                   	cwtl
   b:	48 ff                	rex.W (bad)
   d:	ff                   	(bad)
   e:	ff 48 39             	decl   0x39(%rax)
  11:	44 24 10             	rex.R and $0x10,%al
  14:	75 a5                	jne    0xffffffffffffffbb
  16:	48 83 c4 20          	add    $0x20,%rsp
  1a:	5b                   	pop    %rbx
  1b:	5d                   	pop    %rbp
  1c:	41 5c                	pop    %r12
  1e:	41 5d                	pop    %r13
  20:	41 5e                	pop    %r14
  22:	41 5f                	pop    %r15
  24:	c3                   	ret
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	cc                   	int3
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	eb b9                	jmp    0xffffffffffffffe8
  2f:	e8 d2 cd 32 d7       	call   0xffffffffd732ce06
  34:	e9 2d fe ff ff       	jmp    0xfffffffffffffe66
  39:	48 89 cf             	mov    %rcx,%rdi
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	4c                   	rex.WR
  3f:	24                   	.byte 0x24

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	eb b9                	jmp    0xffffffffffffffbe
   5:	e8 d2 cd 32 d7       	call   0xffffffffd732cddc
   a:	e9 2d fe ff ff       	jmp    0xfffffffffffffe3c
   f:	48 89 cf             	mov    %rcx,%rdi
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	4c                   	rex.WR
  15:	24                   	.byte 0x24
[  183.376771][   T70] RSP: 0018:ffffc9000050fbe0 EFLAGS: 00010297
[  183.377111][   T70] RAX: ffff888008b6c008 RBX: ffff8880249c4d80 RCX: 1ffff11000b7114e
[  183.377544][   T70] RDX: 1ffff11000fc3586 RSI: 1ffff11006b454be RDI: ffff888005b88a70
[  183.377972][   T70] RBP: ffff888007e1ac30 R08: ffff888005b88a78 R09: fffffbfff39aa078
[  183.378415][   T70] R10: ffffffff9cd503c7 R11: ffff888035bfc508 R12: dffffc0000000000
[  183.378843][   T70] R13: fffffbfff358f027 R14: ffffffff9b365698 R15: ffff888007e1abd0
[  183.379283][   T70] FS:  0000000000000000(0000) GS:ffff888035a00000(0000) knlGS:0000000000000000
[  183.379765][   T70] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  183.380172][   T70] CR2: 00007f2dc26220e0 CR3: 0000000023134005 CR4: 00000000001706f0
[  183.380673][   T70] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  183.381127][   T70] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  183.381593][   T70] Call Trace:
[  183.381784][   T70]  <TASK>
[ 183.381952][ T70] ? __warn (kernel/panic.c:677) 
[ 183.382195][ T70] ? geneve_exit_batch_rtnl (drivers/net/geneve.c:1914 (discriminator 1)) geneve
[ 183.382565][ T70] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 183.382856][ T70] ? handle_bug (arch/x86/kernel/traps.c:238) 
[ 183.383122][ T70] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) 
[ 183.383386][ T70] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 183.383690][ T70] ? geneve_exit_batch_rtnl (drivers/net/geneve.c:1914 (discriminator 1)) geneve
[ 183.384085][ T70] ? default_device_exit_batch_rtnl (net/core/dev.c:11626) 
[ 183.384456][ T70] cleanup_net (net/core/net_namespace.c:628 (discriminator 2)) 
[ 183.384704][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 183.385036][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) 
[ 183.385331][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 183.385610][ T70] ? process_one_work (kernel/workqueue.c:2609) 
[ 183.385906][ T70] process_one_work (kernel/workqueue.c:2638) 
[ 183.386232][ T70] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 183.386498][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) 
[ 183.386805][ T70] ? assign_work (kernel/workqueue.c:1101) 
[ 183.387078][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) 
[ 183.387335][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 183.387697][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 183.387987][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) 
[ 183.388270][ T70] kthread (kernel/kthread.c:388) 
[ 183.388493][ T70] ? __pfx_kthread (kernel/kthread.c:341) 
[ 183.388759][ T70] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 183.389036][ T70] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
geneve_exit_batch_rtnl:cleanup_net:process_one_work:worker_thread