[ 1425.327056] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
[ 1425.335100] IP: xfrm_lookup+0x2a/0x7d0
[ 1425.339062] PGD 0 P4D 0 
[ 1425.341645] Oops: 0000 [#1] SMP PTI
[ 1425.345275] Modules linked in:
[ 1425.348484] CPU: 2 PID: 22 Comm: ksoftirqd/2 Not tainted 4.14.12 #1
[ 1425.354958] Hardware name: To be filled by O.E.M. CAR-2051/CAR, BIOS 1.01 07/11/2016
[ 1425.363044] task: ffff986b3b210000 task.stack: ffff9c23000f0000
[ 1425.369234] RIP: 0010:xfrm_lookup+0x2a/0x7d0
[ 1425.373667] RSP: 0018:ffff9c23000f3b20 EFLAGS: 00010246
[ 1425.379032] RAX: 0000000000000000 RBX: ffffffff8e074080 RCX: 0000000000000000
[ 1425.386505] RDX: ffff9c23000f3b98 RSI: 0000000000000000 RDI: ffffffff8e074080
[ 1425.394062] RBP: ffffffff8e074080 R08: 0000000000000002 R09: 0000000000000000
[ 1425.401420] R10: 0000000000000020 R11: 0000000000000020 R12: ffff9c23000f3b98
[ 1425.408786] R13: 0000000000000000 R14: 0000000000000002 R15: ffff986b3b244078
[ 1425.416162] FS:  0000000000000000(0000) GS:ffff986b3fc80000(0000) knlGS:0000000000000000
[ 1425.424568] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1425.430566] CR2: 0000000000000020 CR3: 000000006e00a000 CR4: 00000000001006e0
[ 1425.437940] Call Trace:
[ 1425.440486]  __xfrm_route_forward+0xa4/0x110
[ 1425.444886]  ip_forward+0x3da/0x450
[ 1425.448552]  ? ip_rcv_finish+0x61/0x390
[ 1425.452519]  ip_rcv+0x2b5/0x380
[ 1425.455727]  ? inet_del_offload+0x30/0x30
[ 1425.459896]  __netif_receive_skb_core+0x751/0xb00
[ 1425.464819]  ? __alloc_pages_nodemask+0xc6/0x1f0
[ 1425.469723]  ? netif_receive_skb_internal+0x47/0xf0
[ 1425.474931]  netif_receive_skb_internal+0x47/0xf0
[ 1425.479768]  napi_gro_receive+0x70/0x90
[ 1425.483781]  igb_poll+0x600/0xe80
[ 1425.487283]  ? xfrm4_dst_destroy+0x6d/0x90
[ 1425.491544]  net_rx_action+0x1fc/0x310
[ 1425.495465]  __do_softirq+0xd5/0x1cf
[ 1425.499156]  run_ksoftirqd+0x14/0x30
[ 1425.502943]  smpboot_thread_fn+0xf9/0x150
[ 1425.507250]  kthread+0xf2/0x130
[ 1425.510577]  ? sort_range+0x20/0x20
[ 1425.514269]  ? kthread_park+0x60/0x60
[ 1425.518021]  ret_from_fork+0x1f/0x30
[ 1425.521757] Code: 00 41 57 41 56 45 89 c6 41 55 41 54 49 89 f5 55 53 49 89 d4 48 89 fb 48 83 ec 40 65 48 8b 04 25 28 00 00 00 48 89 44 24 38 31 c0 <48> 8b 46 20 48 85 c9 44 0f b7 38 c7 44 24 0c 00 00 00 00 0f 84 
[ 1425.541379] RIP: xfrm_lookup+0x2a/0x7d0 RSP: ffff9c23000f3b20
[ 1425.547367] CR2: 0000000000000020
[ 1425.550748] ---[ end trace 9cc9a035940887e0 ]---
[ 1425.555444] Kernel panic - not syncing: Fatal exception in interrupt
[ 1425.562184] Kernel Offset: 0xc000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 1425.572955] Rebooting in 10 seconds..