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: batadv_dat_purge+0x0/0x50 net/batman-adv/distributed-arp-table.c:171
WARNING: CPU: 0 PID: 8 at lib/debugobjects.c:502 debug_print_object+0x16e/0x250 lib/debugobjects.c:502
Modules linked in:
CPU: 0 PID: 8 Comm: kworker/u4:0 Not tainted 5.19.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Workqueue: netns cleanup_net
RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:502
Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 80 80 64 89 4c 89 ee 48 c7 c7 60 74 64 89 e8 f9 3e b5 04 <0f> 0b 83 05 a5 6d 42 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0018:ffffc900000d78b0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff89647000 RDI: fffff5200001af08
RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880b9c34047
R10: ffffed1017386808 R11: 0000000000000001 R12: ffffffff890e0fa0
R13: ffffffff89647940 R14: ffffffff81600060 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fca9fbc69b8 CR3: 000000006e48d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __debug_check_no_obj_freed lib/debugobjects.c:989 [inline]
 debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1020
 slab_free_hook mm/slub.c:1729 [inline]
 slab_free_freelist_hook+0xeb/0x1c0 mm/slub.c:1780
 slab_free mm/slub.c:3536 [inline]
 kfree+0xd6/0x4d0 mm/slub.c:4584
 device_release+0x93/0x200 drivers/base/core.c:2241
 kobject_cleanup lib/kobject.c:673 [inline]
 kobject_release lib/kobject.c:704 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x139/0x410 lib/kobject.c:721
 netdev_run_todo+0x663/0xe90 net/core/dev.c:10366
 default_device_exit_batch+0x3a4/0x4f0 net/core/dev.c:11338
 cleanup_net+0x423/0x980 net/core/net_namespace.c:594
 process_one_work+0x865/0x13d0 kernel/workqueue.c:2289
 worker_thread+0x598/0xec0 kernel/workqueue.c:2436
 kthread+0x299/0x340 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>