ODEBUG: free active (active state 0) object: ffff88806edf4448 object type: work_struct hint: mddev_delayed_delete+0x0/0x20 drivers/md/md.c:721
WARNING: CPU: 1 PID: 6841 at lib/debugobjects.c:612 debug_print_object+0x1a2/0x2b0 lib/debugobjects.c:612
Modules linked in:
CPU: 1 UID: 0 PID: 6841 Comm: syz.4.246 Not tainted 6.16.0-syzkaller-00857-gced1b9e0392d #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:debug_print_object+0x1a2/0x2b0 lib/debugobjects.c:612
Code: fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 54 41 56 48 8b 14 dd c0 ba 15 8c 4c 89 e6 48 c7 c7 40 af 15 8c e8 ff 69 97 fc 90 <0f> 0b 90 90 58 83 05 a6 67 c6 0b 01 48 83 c4 18 5b 5d 41 5c 41 5d
RSP: 0018:ffffc90024547b38 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffc900038f1000
RDX: 0000000000080000 RSI: ffffffff817ab125 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff8c15b5e0
R13: ffffffff8bac1e40 R14: ffffffff884d6a50 R15: ffffc90024547c38
FS:  0000000000000000(0000) GS:ffff888097606000(0063) knlGS:00000000f503eb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000081000000 CR3: 0000000043cec000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]
 debug_check_no_obj_freed+0x4b7/0x600 lib/debugobjects.c:1129
 slab_free_hook mm/slub.c:2312 [inline]
 slab_free mm/slub.c:4643 [inline]
 kfree+0x28f/0x4d0 mm/slub.c:4842
 disk_release+0x2a4/0x410 block/genhd.c:1310
 device_release+0xa4/0x240 drivers/base/core.c:2568
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1e7/0x5a0 lib/kobject.c:737
 put_device+0x1f/0x30 drivers/base/core.c:3800
 blkdev_release+0x15/0x20 block/fops.c:699