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 ]------------
ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x80
WARNING: CPU: 0 PID: 10 at lib/debugobjects.c:508 debug_print_object lib/debugobjects.c:505 [inline]
WARNING: CPU: 0 PID: 10 at lib/debugobjects.c:508 __debug_check_no_obj_freed lib/debugobjects.c:992 [inline]
WARNING: CPU: 0 PID: 10 at lib/debugobjects.c:508 debug_check_no_obj_freed+0x44b/0x650 lib/debugobjects.c:1023
Modules linked in:
CPU: 0 PID: 10 Comm: kworker/u4:1 Not tainted 5.16.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:debug_print_object lib/debugobjects.c:505 [inline]
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:992 [inline]
RIP: 0010:debug_check_no_obj_freed+0x44b/0x650 lib/debugobjects.c:1023
Code: 4c 89 ef e8 17 4d b5 fd 4d 8b 45 00 48 c7 c7 60 53 d5 8a 48 c7 c6 80 4f d5 8a 48 89 da 44 89 f1 4d 89 f9 31 c0 e8 f5 52 33 fd <0f> 0b 48 ba 00 00 00 00 00 fc ff df ff 05 2f a3 e3 09 48 8b 5c 24
RSP: 0018:ffffc90000cf7768 EFLAGS: 00010246
RAX: ef555066a83e8300 RBX: ffffffff8ad55520 RCX: ffff888011fa1d00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffff888067bf1590 R08: ffffffff816a1d52 R09: ffffed10173467b1
R10: ffffed10173467b1 R11: 0000000000000000 R12: ffff888067bf158c
R13: ffffffff8a714080 R14: 0000000000000000 R15: ffffffff81555690
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f778e9d4000 CR3: 000000001d371000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 slab_free_hook mm/slub.c:1698 [inline]
 slab_free_freelist_hook+0xcf/0x1a0 mm/slub.c:1749
 slab_free mm/slub.c:3513 [inline]
 kfree+0xe1/0x330 mm/slub.c:4561
 device_release+0x98/0x1c0
 kobject_cleanup+0x1c0/0x280 lib/kobject.c:705
 netdev_run_todo+0xb59/0xcf0 net/core/dev.c:10641
 default_device_exit_batch+0x450/0x4b0 net/core/dev.c:11611
 ops_exit_list net/core/net_namespace.c:171 [inline]
 cleanup_net+0x7ec/0xc50 net/core/net_namespace.c:593
 process_one_work+0x853/0x1140 kernel/workqueue.c:2298
 worker_thread+0xac1/0x1320 kernel/workqueue.c:2445
 kthread+0x468/0x490 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30
 </TASK>