------------[ cut here ]------------
ODEBUG: free active (active state 0) object type: timer_list hint: vub300_inactivity_timer_expired+0x0/0x3e0
WARNING: CPU: 1 PID: 4437 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline]
WARNING: CPU: 1 PID: 4437 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:1045 [inline]
WARNING: CPU: 1 PID: 4437 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x395/0x520 lib/debugobjects.c:1075
Modules linked in:
CPU: 1 PID: 4437 Comm: kworker/1:11 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:debug_print_object lib/debugobjects.c:515 [inline]
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:1045 [inline]
RIP: 0010:debug_check_no_obj_freed+0x395/0x520 lib/debugobjects.c:1075
Code: e8 f0 60 b8 fd 4c 8b 45 00 48 c7 c7 20 7b df 8a 48 c7 c6 80 77 df 8a 48 c7 c2 80 7c df 8a 8b 4c 24 1c 4d 89 e9 e8 1b 78 32 fd <0f> 0b 4c 8b 6c 24 10 48 b9 00 00 00 00 00 fc ff df ff 05 4c c5 e5
RSP: 0018:ffffc90004cef458 EFLAGS: 00010246
RAX: 4225ef94e7c9fe00 RBX: ffffffff97cd84e8 RCX: 0000000000100000
RDX: ffffc90019ebe000 RSI: 00000000000255b6 RDI: 00000000000255b7
RBP: ffffffff8a8df780 R08: ffffc90004cef0e7 R09: 1ffff9200099de1c
R10: dffffc0000000000 R11: fffff5200099de1d R12: 0000000000000001
R13: ffffffff877891c0 R14: ffff888054ac5000 R15: ffff888054ac5180
FS:  0000000000000000(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3aab28 CR3: 0000000029407000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 slab_free_hook mm/slub.c:1704 [inline]
 slab_free_freelist_hook+0xd2/0x1b0 mm/slub.c:1755
 slab_free mm/slub.c:3687 [inline]
 __kmem_cache_free+0xb6/0x200 mm/slub.c:3700
 device_release+0x92/0x1c0 drivers/base/core.c:-1
 kobject_cleanup lib/kobject.c:681 [inline]
 kobject_release lib/kobject.c:712 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x217/0x450 lib/kobject.c:729
 vub300_delete drivers/mmc/host/vub300.c:378 [inline]
 kref_put include/linux/kref.h:65 [inline]
 vub300_disconnect+0x277/0x2e0 drivers/mmc/host/vub300.c:2389
 usb_unbind_interface+0x200/0x870 drivers/usb/core/driver.c:457
 device_remove drivers/base/dd.c:549 [inline]
 __device_release_driver drivers/base/dd.c:1279 [inline]
 device_release_driver_internal+0x4cf/0x7c0 drivers/base/dd.c:1305
 bus_remove_device+0x2dd/0x400 drivers/base/bus.c:531
 device_del+0x63f/0xa80 drivers/base/core.c:3900
 usb_disable_device+0x3e7/0x8a0 drivers/usb/core/message.c:1472
 usb_disconnect+0x33c/0x8a0 drivers/usb/core/hub.c:2319
 hub_port_connect drivers/usb/core/hub.c:5366 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5662 [inline]
 port_event drivers/usb/core/hub.c:5822 [inline]
 hub_event+0x1d27/0x5200 drivers/usb/core/hub.c:5904
 process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>