device veth1_macvtap left promiscuous mode
device veth0_macvtap left promiscuous mode
device veth1_vlan left promiscuous mode
device veth0_vlan left promiscuous mode
bond1 (unregistering): Released all slaves
------------[ cut here ]------------
WARNING: CPU: 1 PID: 147 at net/core/dev.c:8831 rollback_registered_many+0xcca/0x1030 net/core/dev.c:8831
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 147 Comm: kworker/u4:3 Not tainted 5.6.0-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:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x3e kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 fixup_bug arch/x86/kernel/traps.c:169 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:rollback_registered_many+0xcca/0x1030 net/core/dev.c:8831
Code: 92 1a 00 00 48 c7 c6 00 ea f8 88 48 c7 c7 e0 ea f8 88 c6 05 1c da 68 04 01 e8 91 a7 0d fb 0f 0b e9 a1 fd ff ff e8 56 56 3d fb <0f> 0b e9 76 fd ff ff e8 4a 56 3d fb 0f 0b e9 af fa ff ff e8 3e 56
RSP: 0018:ffffc900014d79b0 EFLAGS: 00010293
RAX: ffff8880a92904c0 RBX: ffff888052458000 RCX: ffffffff86382ede
RDX: 0000000000000000 RSI: ffffffff8638316a RDI: 0000000000000001
RBP: ffffc900014d7ad8 R08: ffff8880a92904c0 R09: fffffbfff14e9b35
R10: fffffbfff14e9b34 R11: ffffffff8a74d9a7 R12: ffff888099111400
R13: dffffc0000000000 R14: 00000000922bca01 R15: ffffc900014d7ab0
 unregister_netdevice_many.part.0+0x1b/0x1f0 net/core/dev.c:9964
 unregister_netdevice_many net/core/dev.c:9963 [inline]
 default_device_exit_batch+0x360/0x420 net/core/dev.c:10440
 ops_exit_list.isra.0+0x10c/0x160 net/core/net_namespace.c:175
 cleanup_net+0x549/0xb10 net/core/net_namespace.c:589
 process_one_work+0xa05/0x17a0 kernel/workqueue.c:2264
 worker_thread+0x98/0xe40 kernel/workqueue.c:2410
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..