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: 1 PID: 16600 at drivers/net/ipvlan/ipvlan_main.c:65 ipvlan_unregister_nf_hook.cold+0x11/0x18 drivers/net/ipvlan/ipvlan_main.c:65
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 16600 Comm: kworker/u4:13 Not tainted 4.19.168-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:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x5a kernel/panic.c:541
 report_bug+0x262/0x2b0 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+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:ipvlan_unregister_nf_hook.cold+0x11/0x18 drivers/net/ipvlan/ipvlan_main.c:65
Code: c6 08 0f b7 f6 e8 c9 d4 f2 ff e9 36 4e 44 fc 4c 89 e7 e8 0e 64 9a f9 eb d6 e8 37 af 64 f9 48 c7 c7 e0 61 da 88 e8 a9 d4 f2 ff <0f> 0b e9 97 79 44 fc e8 1f af 64 f9 48 c7 c7 a0 7f da 88 e8 91 d4
RSP: 0018:ffff888096def918 EFLAGS: 00010282
RAX: 0000000000000024 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff814de1b1 RDI: ffffed1012dbdf15
RBP: ffff88808f275780 R08: 0000000000000024 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff888063e5dd40
R13: ffff88806d981680 R14: ffffffff84422b50 R15: ffff888096defa50
 ipvlan_port_destroy drivers/net/ipvlan/ipvlan_main.c:166 [inline]
 ipvlan_uninit+0x45f/0x5a0 drivers/net/ipvlan/ipvlan_main.c:244
 rollback_registered_many+0x927/0xe70 net/core/dev.c:8202
 unregister_netdevice_many.part.0+0x1a/0x300 net/core/dev.c:9311
 unregister_netdevice_many net/core/dev.c:9310 [inline]
 default_device_exit_batch+0x2fa/0x3c0 net/core/dev.c:9782
 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:156
 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:553
 process_one_work+0x864/0x1570 kernel/workqueue.c:2155
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Kernel Offset: disabled
Rebooting in 86400 seconds..