======================================
| [   34.990070] #PF: supervisor read access in kernel mode
| [   34.990124] #PF: error_code(0x0000) - not-present page
| [   34.990184] PGD 9980067 P4D 9980067 PUD 91b8067 PMD 0
| [   34.990244] Oops: Oops: 0000 [#1] SMP NOPTI
[   34.990394] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.990464] Workqueue: mld mld_ifc_work
[   34.990524] RIP: 0010:xfrm_lookup_with_ifid (net/xfrm/xfrm_policy.c:3181) 
[ 34.990592] Code: 41 57 45 89 cf 41 56 41 55 49 89 d5 41 54 49 89 fc 55 48 89 f5 53 44 89 c3 48 83 ec 40 65 48 8b 05 ca c4 54 01 48 89 44 24 38 <48> 8b 46 08 44 0f b7 30 48 85 c9 0f 84 f3 00 00 00 0f b6 41 12 48
All code
========
   0:	41 57                	push   %r15
   2:	45 89 cf             	mov    %r9d,%r15d
   5:	41 56                	push   %r14
   7:	41 55                	push   %r13
   9:	49 89 d5             	mov    %rdx,%r13
   c:	41 54                	push   %r12
   e:	49 89 fc             	mov    %rdi,%r12
  11:	55                   	push   %rbp
  12:	48 89 f5             	mov    %rsi,%rbp
  15:	53                   	push   %rbx
  16:	44 89 c3             	mov    %r8d,%ebx
  19:	48 83 ec 40          	sub    $0x40,%rsp
  1d:	65 48 8b 05 ca c4 54 	mov    %gs:0x154c4ca(%rip),%rax        # 0x154c4ef
  24:	01 
  25:	48 89 44 24 38       	mov    %rax,0x38(%rsp)
  2a:*	48 8b 46 08          	mov    0x8(%rsi),%rax		<-- trapping instruction
  2e:	44 0f b7 30          	movzwl (%rax),%r14d
  32:	48 85 c9             	test   %rcx,%rcx
  35:	0f 84 f3 00 00 00    	je     0x12e
  3b:	0f b6 41 12          	movzbl 0x12(%rcx),%eax
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 8b 46 08          	mov    0x8(%rsi),%rax
   4:	44 0f b7 30          	movzwl (%rax),%r14d
   8:	48 85 c9             	test   %rcx,%rcx
   b:	0f 84 f3 00 00 00    	je     0x104
  11:	0f b6 41 12          	movzbl 0x12(%rcx),%eax
  15:	48                   	rex.W
[   34.990807] RSP: 0018:ffffbbc1c012f808 EFLAGS: 00010282
[   34.990871] RAX: ef5c6fdab63be300 RBX: 0000000000000006 RCX: ffff9fce0105bf00
[   34.990964] RDX: ffffbbc1c012f8d0 RSI: 0000000000000000 RDI: ffffffffbb151300
[   34.991059] RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000000
[   34.991150] R10: 0000000000000040 R11: ffffffffb99f2e4c R12: ffffffffbb151300
[   34.991246] R13: ffffbbc1c012f8d0 R14: 0000000000000000 R15: 0000000000000000
[   34.991339] FS:  0000000000000000(0000) GS:ffff9fce83d1c000(0000) knlGS:0000000000000000
[   34.991432] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.991508] CR2: 0000000000000008 CR3: 000000000587f002 CR4: 0000000000772ef0
[   34.991595] PKRU: 55555554
[   34.991625] Call Trace:
[   34.991656]  <TASK>
[   34.991688] ? ip6_dst_lookup_tail.constprop.0 (net/ipv6/ip6_output.c:1231) 
[   34.991762] xfrm_lookup_route (net/xfrm/xfrm_policy.c:3351) 
[   34.991810] udp_tunnel6_dst_lookup (net/ipv6/ip6_udp_tunnel.c:167 net/ipv6/ip6_udp_tunnel.c:135) ip6_udp_tunnel 
[   34.991888] vxlan_xmit_one (drivers/net/vxlan/vxlan_core.c:2537) vxlan 
[   34.991969] ? vxlan_xmit (drivers/net/vxlan/vxlan_core.c:2806) vxlan 
[   34.992040] vxlan_xmit (drivers/net/vxlan/vxlan_core.c:2806) vxlan 
[   34.992105] ? update_load_avg (kernel/sched/fair.c:4770) 
[   34.992161] ? place_entity (kernel/sched/fair.c:5211) 
[   34.992208] ? update_curr (kernel/sched/fair.c:1236) 
[   34.992253] ? dev_hard_start_xmit (./include/linux/netdevice.h:5219 ./include/linux/netdevice.h:5228 net/core/dev.c:3827 net/core/dev.c:3843) 
[   34.992323] ? vxlan_cleanup_module (drivers/net/vxlan/vxlan_core.c:597) vxlan 
[   34.992381] dev_hard_start_xmit (./include/linux/netdevice.h:5219 ./include/linux/netdevice.h:5228 net/core/dev.c:3827 net/core/dev.c:3843) 
[   34.992431] __dev_queue_xmit (net/core/dev.h:370 net/core/dev.c:4714) 
[   34.992476] ? sysvec_call_function_single (./arch/x86/include/asm/hardirq.h:78 arch/x86/kernel/smp.c:266) 
[   34.992547] ? ndisc_constructor (net/ipv6/ndisc.c:360) 
[   34.992619] ? ___neigh_create (net/core/neighbour.c:703) 
[   34.992665] ? eth_header (net/ethernet/eth.c:85) 
[   34.992712] ip6_finish_output2 (./include/net/neighbour.h:547 net/ipv6/ip6_output.c:141) 
[   34.992758] ip6_output (net/ipv6/ip6_output.c:215 net/ipv6/ip6_output.c:226 ./include/linux/netfilter.h:413 net/ipv6/ip6_output.c:248) 
[   34.992804] mld_sendpack (net/ipv6/mcast.c:1860) 
[   34.992852] mld_ifc_work (net/ipv6/mcast.c:2696) 
[   34.992899] ? __schedule (kernel/sched/core.c:6792) 
[   34.992945] process_one_work (kernel/workqueue.c:3243) 
[   34.992993] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[   34.993039] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[   34.993100] kthread (kernel/kthread.c:464) 
[   34.993147] ? __pfx_kthread (kernel/kthread.c:413) 
[   34.993192] ? __pfx_kthread (kernel/kthread.c:413) 
[   34.993236] ret_from_fork (arch/x86/kernel/process.c:154) 
[   34.993281] ? __pfx_kthread (kernel/kthread.c:413) 


Finger prints:
xfrm_lookup_with_ifid:xfrm_lookup_route:udp_tunnel6_dst_lookup:vxlan_xmit_one:vxlan_xmit