BUG: unable to handle kernel paging request at ffffe8ff00000000
PGD 1cc773067 P4D 1cc773067 PUD 0 
Oops: 0000 [#1] SMP PTI
CPU: 1 PID: 23 Comm: kworker/u4:1 Not tainted 4.18.0-rc5+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:__skb_unlink include/linux/skbuff.h:1844 [inline]
RIP: 0010:__skb_dequeue include/linux/skbuff.h:1864 [inline]
RIP: 0010:__skb_queue_purge include/linux/skbuff.h:2587 [inline]
RIP: 0010:gro_cells_destroy+0x2bc/0x640 net/core/gro_cells.c:88
Code: 00 00 41 83 c5 ff 45 89 26 45 85 e4 0f 85 9e 01 00 00 48 8b 45 90 44 89 28 4c 8b 65 88 4d 85 e4 0f 85 99 01 00 00 48 8b 5d 80 <4c> 8b 33 48 89 df e8 39 9b a5 f9 4c 8d 6b 08 4c 8b 38 8b 02 89 45 
RSP: 0018:ffff8801d123f8c8 EFLAGS: 00010246
RAX: ffffe8ffffc46010 RBX: ffffe8ff00000000 RCX: ffff880126c7f010
RDX: ffff880126c7f010 RSI: aaaaaaaaaaaab000 RDI: ffffea0006eb47c0
RBP: ffff8801d123f960 R08: 0000000000000000 R09: ffff88021fd39090
R10: 0000000000000000 R11: ffffffff88bd0e50 R12: 0000000000000000
R13: 00000000ffffffff R14: ffff8801280c5010 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffe8ff00000000 CR3: 0000000138ab8000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 ip_tunnel_dev_free+0x3b/0xa0 net/ipv4/ip_tunnel.c:960
 netdev_run_todo+0x10c8/0x1570 net/core/dev.c:8255
 rtnl_unlock+0x13/0x20 net/core/rtnetlink.c:117
 ip_tunnel_delete_nets+0x69d/0x6d0 net/ipv4/ip_tunnel.c:1074
 vti_exit_batch_net+0x6c/0x80 net/ipv4/ip_vti.c:447
 ops_exit_list net/core/net_namespace.c:155 [inline]
 cleanup_net+0xbfb/0x1710 net/core/net_namespace.c:523
 process_one_work+0x1655/0x2000 kernel/workqueue.c:2153
 worker_thread+0x1136/0x2490 kernel/workqueue.c:2296
 kthread+0x473/0x4b0 kernel/kthread.c:247
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:415
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
CR2: ffffe8ff00000000
---[ end trace 826aa906df91fa5a ]---
RIP: 0010:__skb_unlink include/linux/skbuff.h:1844 [inline]
RIP: 0010:__skb_dequeue include/linux/skbuff.h:1864 [inline]
RIP: 0010:__skb_queue_purge include/linux/skbuff.h:2587 [inline]
RIP: 0010:gro_cells_destroy+0x2bc/0x640 net/core/gro_cells.c:88
Code: 00 00 41 83 c5 ff 45 89 26 45 85 e4 0f 85 9e 01 00 00 48 8b 45 90 44 89 28 4c 8b 65 88 4d 85 e4 0f 85 99 01 00 00 48 8b 5d 80 <4c> 8b 33 48 89 df e8 39 9b a5 f9 4c 8d 6b 08 4c 8b 38 8b 02 89 45 
RSP: 0018:ffff8801d123f8c8 EFLAGS: 00010246
RAX: ffffe8ffffc46010 RBX: ffffe8ff00000000 RCX: ffff880126c7f010
RDX: ffff880126c7f010 RSI: aaaaaaaaaaaab000 RDI: ffffea0006eb47c0
RBP: ffff8801d123f960 R08: 0000000000000000 R09: ffff88021fd39090
R10: 0000000000000000 R11: ffffffff88bd0e50 R12: 0000000000000000
R13: 00000000ffffffff R14: ffff8801280c5010 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffe8ff00000000 CR3: 0000000138ab8000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600