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: 158 at net/netfilter/core.c:147 nf_unregister_net_hook+0x292/0x3c0 net/netfilter/core.c:147 nf_unregister_net_hook: hook not found! Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 158 Comm: kworker/u4:3 Not tainted 4.10.0-rc3-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+0x136/0x1d4 lib/dump_stack.c:51 panic+0x1b6/0x358 kernel/panic.c:179 __warn+0x18d/0x1b0 kernel/panic.c:539 warn_slowpath_fmt+0x92/0xb0 kernel/panic.c:562 nf_unregister_net_hook+0x292/0x3c0 net/netfilter/core.c:147 nf_unregister_hook_list net/netfilter/core.c:443 [inline] netfilter_net_exit+0x36/0xa0 net/netfilter/core.c:475 ops_exit_list.isra.0+0x8e/0x120 net/core/net_namespace.c:139 cleanup_net+0x38e/0x7d0 net/core/net_namespace.c:461 process_one_work+0x685/0x1660 kernel/workqueue.c:2098 worker_thread+0xe1/0x1110 kernel/workqueue.c:2232 kthread+0x2c9/0x3d0 kernel/kthread.c:227 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:427 Kernel Offset: disabled