bond0 (unregistering): (slave bond_slave_1): Releasing backup interface 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: 8502 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31 Modules linked in: CPU: 0 PID: 8502 Comm: kworker/u4:4 Not tainted 5.16.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31 Code: 1d d4 de a1 09 31 ff 89 de e8 5d 4f 9c fd 84 db 75 e0 e8 74 4b 9c fd 48 c7 c7 e0 4c 04 8a c6 05 b4 de a1 09 01 e8 65 a3 25 05 <0f> 0b eb c4 e8 58 4b 9c fd 0f b6 1d a3 de a1 09 31 ff 89 de e8 28 RSP: 0018:ffffc900174cf9e8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888081214000 RSI: ffffffff815e40a8 RDI: fffff52002e99f2f RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815dde4e R11: 0000000000000000 R12: ffff8880873445b0 R13: ffff8880200345a0 R14: fffffbfff1701e30 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f872e483010 CR3: 0000000025b97000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __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