WARNING: CPU: 0 PID: 9513 at net/xfrm/xfrm_policy.c:3873 xfrm_policy_fini+0x30c/0x3a0 net/xfrm/xfrm_policy.c:3873 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 9513 Comm: kworker/u4:6 Not tainted 5.1.0-rc6+ #160 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_policy_fini+0x30c/0x3a0 net/xfrm/xfrm_policy.c:3873 Code: c3 e8 08 39 64 fb 0f 0b e9 49 fe ff ff e8 fc 38 64 fb 0f 0b e9 cd fd ff ff e8 f0 38 64 fb 0f 0b e9 00 ff ff ff e8 e4 38 64 fb <0f> 0b e9 62 fd ff ff e8 58 c6 9c fb e9 7d fe ff ff 4c 89 ff e8 6b RSP: 0018:ffff888096917bb0 EFLAGS: 00010293 RAX: ffff888098f14140 RBX: ffff888063691fb0 RCX: 1ffff110131e2946 RDX: 0000000000000000 RSI: ffffffff860c543c RDI: ffff888098f149bc RBP: ffff888096917bf0 R08: ffff888098f14140 R09: ffff888098f14a30 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888063690480 R13: ffff888096917cc8 R14: ffffffff893f2378 R15: dffffc0000000000 xfrm_net_exit+0x1d/0x70 net/xfrm/xfrm_policy.c:3933 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..