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: 13483 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31 Modules linked in: CPU: 0 PID: 13483 Comm: kworker/u4:8 Not tainted 5.16.0-rc1-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 9e 64 a2 09 31 ff 89 de e8 ed ec 9c fd 84 db 75 e0 e8 04 e9 9c fd 48 c7 c7 20 de 04 8a c6 05 7e 64 a2 09 01 e8 7b d1 33 05 <0f> 0b eb c4 e8 e8 e8 9c fd 0f b6 1d 6d 64 a2 09 31 ff 89 de e8 b8 RSP: 0000:ffffc900056cfa10 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888073f75700 RSI: ffffffff815f0ad8 RDI: fffff52000ad9f34 RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ea87e R11: 0000000000000000 R12: 0000000000000001 R13: ffffc900056cfb68 R14: ffff888023eb45b0 R15: ffff88804ded05a0 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3893aa7000 CR3: 000000006f6a5000 CR4: 00000000003506f0 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:3815 [inline] unregister_netdevice_many+0x131c/0x1850 net/core/dev.c:10433 default_device_exit_batch+0x2fa/0x3c0 net/core/dev.c:10926 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