bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
bond0 (unregistering): Released all slaves
------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 0 PID: 23697 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Modules linked in:
CPU: 0 PID: 23697 Comm: kworker/u16:6 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: netns cleanup_net
RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31
Code: 1d d8 f5 a1 09 31 ff 89 de e8 1d f6 9c fd 84 db 75 e0 e8 34 f2 9c fd 48 c7 c7 e0 d4 04 8a c6 05 b8 f5 a1 09 01 e8 5b 99 25 05 <0f> 0b eb c4 e8 18 f2 9c fd 0f b6 1d a7 f5 a1 09 31 ff 89 de e8 e8
RSP: 0018:ffffc9002ad5f9e8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88805fe8ba00 RSI: ffffffff815f0c28 RDI: fffff520055abf2f
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815ea9ce R11: 0000000000000000 R12: ffff88805d4f65b0
R13: ffff88805d4f65a0 R14: fffffbfff1701e30 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0017af6b0 CR3: 000000001a014000 CR4: 0000000000150ef0
Call Trace:
 <TASK>
 __refcount_dec include/linux/refcount.h:344 [inline]
 refcount_dec include/linux/refcount.h:359 [inline]
 dev_put include/linux/netdevice.h:4166 [inline]
 vlan_dev_free+0xdc/0x100 net/8021q/vlan_dev.c:848
 netdev_run_todo+0x6b4/0xa80 net/core/dev.c:10627
 default_device_exit_batch+0x2ff/0x3c0 net/core/dev.c:11608
 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>