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: 1 PID: 19508 at lib/debugobjects.c:508 debug_print_object lib/debugobjects.c:505 [inline]
WARNING: CPU: 1 PID: 19508 at lib/debugobjects.c:508 __debug_check_no_obj_freed lib/debugobjects.c:992 [inline]
WARNING: CPU: 1 PID: 19508 at lib/debugobjects.c:508 debug_check_no_obj_freed+0x44b/0x650 lib/debugobjects.c:1023
Modules linked in:
CPU: 1 PID: 19508 Comm: kworker/u4:7 Not tainted 5.15.0-rc5-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 a7 0e b8 fd 4d 8b 45 00 48 c7 c7 a0 2f b4 8a 48 c7 c6 c0 2b b4 8a 48 89 da 44 89 f1 4d 89 f9 31 c0 e8 35 c0 36 fd <0f> 0b 48 ba 00 00 00 00 00 fc ff df ff 05 ef 4d c5 09 48 8b 5c 24
RSP: 0018:ffffc9000c09f778 EFLAGS: 00010246
RAX: d46e466e8b21da00 RBX: ffffffff8ab43160 RCX: ffff888055bc0000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffff888072fa2e50 R08: ffffffff81693402 R09: ffffed10173a57a8
R10: ffffed10173a57a8 R11: 0000000000000000 R12: ffff888072fa2e4c
R13: ffffffff8a512d00 R14: 0000000000000000 R15: ffffffff81548510
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fad6ba47000 CR3: 000000000c68e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 slab_free_hook mm/slub.c:1675 [inline]
 slab_free_freelist_hook+0xce/0x1a0 mm/slub.c:1725
 slab_free mm/slub.c:3483 [inline]
 kfree+0xcf/0x2f0 mm/slub.c:4543
 device_release+0x98/0x1c0
 kobject_cleanup+0x1c0/0x280 lib/kobject.c:705
 netdev_run_todo+0xb59/0xcf0 net/core/dev.c:10604
 default_device_exit_batch+0x450/0x4b0 net/core/dev.c:11574
 ops_exit_list net/core/net_namespace.c:171 [inline]
 cleanup_net+0x7ec/0xc50 net/core/net_namespace.c:591
 process_one_work+0x853/0x1140 kernel/workqueue.c:2297
 worker_thread+0xac1/0x1320 kernel/workqueue.c:2444
 kthread+0x453/0x480 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30