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ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x90 kernel/workqueue.c:1601
WARNING: CPU: 0 PID: 8477 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Modules linked in:
CPU: 0 PID: 8477 Comm: syz-executor.0 Not tainted 5.11.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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 a0 83 9e 89 4c 89 ee 48 c7 c7 a0 77 9e 89 e8 89 f4 f2 04 <0f> 0b 83 05 95 93 2f 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0018:ffffc900016afb28 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: ffff888011bf5340 RSI: ffffffff815b2a45 RDI: fffff520002d5f57
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815abc1e R11: 0000000000000000 R12: ffffffff894d7f80
R13: ffffffff899e7de0 R14: ffffffff81617f90 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f879aeeb0c8 CR3: 0000000020363000 CR4: 0000000000350ee0
Call Trace:
 __debug_check_no_obj_freed lib/debugobjects.c:987 [inline]
 debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1018
 slab_free_hook mm/slub.c:1539 [inline]
 slab_free_freelist_hook+0x107/0x150 mm/slub.c:1580
 slab_free mm/slub.c:3142 [inline]
 kfree+0xdb/0x360 mm/slub.c:4124
 bt_host_release+0x15/0x20 net/bluetooth/hci_sysfs.c:86
 device_release+0x9f/0x240 drivers/base/core.c:1962
 kobject_cleanup lib/kobject.c:705 [inline]
 kobject_release lib/kobject.c:736 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1c8/0x540 lib/kobject.c:753
 put_device+0x1b/0x30 drivers/base/core.c:3190
 vhci_release+0x78/0xe0 drivers/bluetooth/hci_vhci.c:341
 __fput+0x283/0x920 fs/file_table.c:280
 task_work_run+0xdd/0x190 kernel/task_work.c:140
 exit_task_work include/linux/task_work.h:30 [inline]
 do_exit+0xb89/0x29e0 kernel/exit.c:823
 do_group_exit+0x125/0x310 kernel/exit.c:920
 __do_sys_exit_group kernel/exit.c:931 [inline]
 __se_sys_exit_group kernel/exit.c:929 [inline]
 __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:929
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
Code: Unable to access opcode bytes at RIP 0x45e1ef.
RSP: 002b:00007ffcb47b5588 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045e219
RDX: 0000000000417ab1 RSI: 00000000016b9df0 RDI: 0000000000000043
RBP: 00000000004c3d3e R08: 000000000000000b R09: 0000000000000000
R10: 0000000003204940 R11: 0000000000000246 R12: 0000000000001574
R13: 0000000000000003 R14: 0000000000000032 R15: 00000000000b883d