WARNING: CPU: 1 PID: 7 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: 1 PID: 7 Comm: kworker/u4:0 Not tainted 5.0.0-rc7+ #80 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 __warn.cold+0x20/0x45 kernel/panic.c:571 report_bug+0x263/0x2b0 lib/bug.c:186 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 0b b0 55 fb 4d 85 f6 74 b3 e8 61 ae 55 fb <0f> 0b eb aa 48 81 c3 00 08 00 00 45 31 e4 49 be 00 00 00 00 00 fc RSP: 0018:ffff8880a987fbe0 EFLAGS: 00010293 RAX: ffff8880a98701c0 RBX: ffff88807d171a00 RCX: ffffffff861a3315 RDX: 0000000000000000 RSI: ffffffff861a331f RDI: 0000000000000007 RBP: ffff8880a987fc08 R08: ffff8880a98701c0 R09: ffff8880a9870ab0 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88807d1721f8 R13: 00000000000000ff R14: ffff888093396600 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 process_one_work+0x98e/0x1790 kernel/workqueue.c:2173 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..