device veth1_macvtap left promiscuous mode device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode ------------[ cut here ]------------ WARNING: CPU: 0 PID: 2880 at drivers/net/ipvlan/ipvlan_main.c:63 ipvlan_unregister_nf_hook+0x230/0x260 drivers/net/ipvlan/ipvlan_main.c:63 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 2880 Comm: kworker/u4:4 Not tainted 4.14.232-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:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x20/0x44 kernel/panic.c:547 report_bug+0x208/0x250 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 RIP: 0010:ipvlan_unregister_nf_hook+0x230/0x260 drivers/net/ipvlan/ipvlan_main.c:63 RSP: 0018:ffff8880ac197a28 EFLAGS: 00010297 RAX: ffff8880ac258640 RBX: 0000000000000000 RCX: 1ffff1101584b1ed RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000286 RBP: ffff88806c2e0180 R08: 0000000000000000 R09: 0000000000000004 R10: 0000000000000000 R11: ffff8880ac258640 R12: ffff8880b41fbf00 R13: ffff8880ac197ae0 R14: ffff8880a167a700 R15: ffffffff83cf2ad0 ipvlan_port_destroy+0x2c7/0x3f0 drivers/net/ipvlan/ipvlan_main.c:176 ipvlan_uninit+0xb6/0xe0 drivers/net/ipvlan/ipvlan_main.c:244 rollback_registered_many+0x83f/0xba0 net/core/dev.c:7217 unregister_netdevice_many.part.0+0x18/0x2e0 net/core/dev.c:8285 unregister_netdevice_many net/core/dev.c:8284 [inline] default_device_exit_batch+0x2d8/0x380 net/core/dev.c:8746 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:145 cleanup_net+0x3b3/0x840 net/core/net_namespace.c:484 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Kernel Offset: disabled Rebooting in 86400 seconds..