team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves ------------[ cut here ]------------ WARNING: CPU: 0 PID: 42 at net/netfilter/core.c:147 nf_unregister_net_hook+0x34a/0x580 net/netfilter/core.c:147 nf_unregister_net_hook: hook not found! Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 42 Comm: kworker/u4:2 Not tainted 4.10.0-rc2-syzkaller #0 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:15 [inline] dump_stack+0x1bd/0x29c lib/dump_stack.c:51 panic+0x1e5/0x44f kernel/panic.c:179 __warn+0x194/0x1d0 kernel/panic.c:539 warn_slowpath_fmt+0x92/0xb0 kernel/panic.c:562 nf_unregister_net_hook+0x34a/0x580 net/netfilter/core.c:147 nf_unregister_hook_list net/netfilter/core.c:443 [inline] netfilter_net_exit+0x36/0xd0 net/netfilter/core.c:475 ops_exit_list+0xae/0x180 net/core/net_namespace.c:139 cleanup_net+0x336/0xbb0 net/core/net_namespace.c:461 process_one_work+0x7b3/0x1cf0 kernel/workqueue.c:2098 worker_thread+0x614/0x1580 kernel/workqueue.c:2232 kthread+0x311/0x4c0 kernel/kthread.c:227 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:427 Kernel Offset: disabled