bond0 (unregistering): (slave bond2): Releasing backup interface
device bond2 left promiscuous mode
bond2 (unregistering): Released all slaves
bond1 (unregistering): Released all slaves
------------[ cut here ]------------
WARNING: CPU: 0 PID: 14693 at net/core/dev.c:11100 unregister_netdevice_many+0x132f/0x1790 net/core/dev.c:11100
Modules linked in:
CPU: 0 PID: 14693 Comm: kworker/u16:6 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: netns cleanup_net
RIP: 0010:unregister_netdevice_many+0x132f/0x1790 net/core/dev.c:11100
Code: b2 1c 00 00 48 c7 c6 80 e5 ac 8a 48 c7 c7 c0 e5 ac 8a c6 05 97 9c 51 06 01 e8 d6 a7 d5 01 0f 0b e9 ba f9 ff ff e8 51 11 4c fa <0f> 0b e9 91 f9 ff ff e8 b5 4b 92 fa e9 98 ee ff ff 4c 89 ef e8 d8
RSP: 0018:ffffc90003737a28 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000020670a01 RCX: 0000000000000000
RDX: ffff88800ef3a180 RSI: ffffffff872ad2ef RDI: 0000000000000003
RBP: ffff8880249d5f00 R08: 0000000000000000 R09: 0000000020670a01
R10: ffffffff872acc7f R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880427cc000 R14: dffffc0000000000 R15: ffff8880249d5f00
FS:  0000000000000000(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5e984eeef0 CR3: 00000000733e3000 CR4: 0000000000150ef0
Call Trace:
 <TASK>
 default_device_exit_batch+0x2fa/0x3c0 net/core/dev.c:11607
 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171
 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:593
 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>