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+0x0/0x90 include/linux/find.h:144
WARNING: CPU: 1 PID: 15286 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Modules linked in:
CPU: 1 PID: 15286 Comm: kworker/u4:7 Not tainted 5.17.0-rc2-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+0x16e/0x250 lib/debugobjects.c:505
Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 40 d0 42 89 4c 89 ee 48 c7 c7 40 c4 42 89 e8 49 f4 ab 04 <0f> 0b 83 05 95 30 0f 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0018:ffffc9000274f8b0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8942bfe0 RDI: fffff520004e9f08
RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880b9f341c7
R10: ffffed10173e6838 R11: 0000000000000001 R12: ffffffff88ed7ec0
R13: ffffffff8942ca80 R14: ffffffff815d3c80 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0642e52e3c CR3: 000000006401e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __debug_check_no_obj_freed lib/debugobjects.c:992 [inline]
 debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1023
 slab_free_hook mm/slub.c:1703 [inline]
 slab_free_freelist_hook+0xeb/0x1c0 mm/slub.c:1754
 slab_free mm/slub.c:3509 [inline]
 kfree+0xcb/0x280 mm/slub.c:4562
 device_release+0x93/0x200 drivers/base/core.c:2229
 kobject_cleanup lib/kobject.c:705 [inline]
 kobject_release lib/kobject.c:736 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x139/0x410 lib/kobject.c:753
 netdev_run_todo+0x659/0x930 net/core/dev.c:9973
 default_device_exit_batch+0x2aa/0x360 net/core/dev.c:10946
 cleanup_net+0x423/0x980 net/core/net_namespace.c:597
 process_one_work+0x879/0x1410 kernel/workqueue.c:2307
 worker_thread+0x5a0/0xf60 kernel/workqueue.c:2454
 kthread+0x299/0x340 kernel/kthread.c:377
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>