WARNING: CPU: 0 PID: 9259 at net/ipv6/xfrm6_tunnel.c:351 xfrm6_tunnel_net_exit+0x1df/0x370 net/ipv6/xfrm6_tunnel.c:351
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 9259 Comm: kworker/u4:7 Not tainted 5.0.0-rc7+ #78
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2cb/0x65c kernel/panic.c:214
kobject: 'loop1' (00000000b6d356ff): kobject_uevent_env
 __warn.cold+0x20/0x45 kernel/panic.c:571
 report_bug+0x263/0x2b0 lib/bug.c:186
kobject: 'loop1' (00000000b6d356ff): fill_kobj_path: path = '/devices/virtual/block/loop1'
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:xfrm6_tunnel_net_exit+0x1df/0x370 net/ipv6/xfrm6_tunnel.c:351
Code: 4c 89 e0 48 c1 e8 03 42 80 3c 38 00 0f 85 73 01 00 00 4d 8b 34 24 31 ff 4c 89 f6 e8 bb fc 53 fb 4d 85 f6 74 b3 e8 11 fb 53 fb <0f> 0b eb aa 48 81 c3 00 08 00 00 45 31 e4 49 be 00 00 00 00 00 fc
kernel msg: ebtables bug: please report to author: bad policy
RSP: 0018:ffff888061f77be0 EFLAGS: 00010293
RAX: ffff88808e20e540 RBX: ffff88806b43ce00 RCX: ffffffff861be955
RDX: 0000000000000000 RSI: ffffffff861be95f RDI: 0000000000000007
RBP: ffff888061f77c08 R08: ffff88808e20e540 R09: ffff88808e20ee30
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88806b43ceb8
R13: 0000000000000017 R14: ffff88809606b800 R15: dffffc0000000000
 ops_exit_list.isra.0+0xb0/0x160 net/core/net_namespace.c:153
 cleanup_net+0x3fb/0x960 net/core/net_namespace.c:551
connect: ipv4 mapped
kobject: 'loop3' (00000000dc2bfef0): kobject_uevent_env
 process_one_work+0x98e/0x1790 kernel/workqueue.c:2173
kobject: 'loop3' (00000000dc2bfef0): fill_kobj_path: path = '/devices/virtual/block/loop3'
 worker_thread+0x98/0xe40 kernel/workqueue.c:2319
 kthread+0x357/0x430 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..