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ODEBUG: free active (active state 0) object: ffff888012296448 object type: work_struct hint: mddev_delayed_delete+0x0/0x20 drivers/md/md.c:721
WARNING: CPU: 0 PID: 3067 at lib/debugobjects.c:612 debug_print_object+0x1a2/0x2b0 lib/debugobjects.c:612
Modules linked in:
CPU: 0 UID: 0 PID: 3067 Comm: syz.2.9012 Not tainted 6.16.0-syzkaller-11241-g186f3edfdd41 #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 60 f5 15 8c 4c 89 e6 48 c7 c7 e0 e9 15 8c e8 2f c0 93 fc 90 <0f> 0b 90 90 58 83 05 36 df c4 0b 01 48 83 c4 18 5b 5d 41 5c 41 5d
RSP: 0018:ffffc9000c7b7b38 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff8179ffd8
RDX: ffff88802abe0000 RSI: ffffffff8179ffe5 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c15f080
R13: ffffffff8bac1520 R14: ffffffff88536f50 R15: ffffc9000c7b7c38
FS:  0000000000000000(0000) GS:ffff8880974d6000(0063) knlGS:00000000573a0440
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7411734 CR3: 000000006644e000 CR4: 0000000000352ef0
DR0: 0000000000000004 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
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:2348 [inline]
 slab_free mm/slub.c:4680 [inline]
 kfree+0x28f/0x4d0 mm/slub.c:4879
 disk_release+0x2a1/0x410 block/genhd.c:1310
 device_release+0xa1/0x240 drivers/base/core.c:2565
 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:3797
 blkdev_release+0x15/0x20 block/fops.c:699
 __fput+0x3ff/0xb70 fs/file_table.c:468
 task_work_run+0x14d/0x240 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xeb/0x110 kernel/entry/common.c:43