WARNING: CPU: 0 PID: 7 at net/xfrm/xfrm_state.c:2389 xfrm_state_fini+0x218/0x280 net/xfrm/xfrm_state.c:2389 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.1.0-rc4+ #67 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:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:xfrm_state_fini+0x218/0x280 net/xfrm/xfrm_state.c:2389 Code: 41 5e 5d c3 e8 c9 f5 66 fb 0f 0b e9 09 ff ff ff e8 bd f5 66 fb 0f 0b e9 68 ff ff ff e8 b1 f5 66 fb 0f 0b eb c6 e8 a8 f5 66 fb <0f> 0b e9 52 fe ff ff e8 cc 01 9f fb e9 75 fe ff ff e8 e2 01 9f fb RSP: 0018:ffff8880aa28fbd0 EFLAGS: 00010293 RAX: ffff8880aa27c1c0 RBX: ffff8880998308c0 RCX: ffffffff86083889 RDX: 0000000000000000 RSI: ffffffff86099708 RDI: 0000000000000005 RBP: ffff8880aa28fbf0 R08: ffff8880aa27c1c0 R09: ffff8880aa27cab0 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888099832300 R13: ffff8880aa28fcc8 R14: ffffffff893ea398 R15: dffffc0000000000 xfrm_net_exit+0x25/0x70 net/xfrm/xfrm_policy.c:3934 ops_exit_list.isra.0+0xb0/0x160 net/core/net_namespace.c:153 cleanup_net+0x3fb/0x960 net/core/net_namespace.c:552 process_one_work+0x98e/0x1790 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x357/0x430 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..