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ODEBUG: free active (active state 1) object type: rcu_head hint: 0x0
WARNING: CPU: 0 PID: 24 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Modules linked in:
CPU: 0 PID: 24 Comm: kworker/u4:1 Not tainted 5.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usbip_event event_handler
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 c0 94 9e 89 4c 89 ee 48 c7 c7 c0 88 9e 89 e8 ac c1 f6 04 <0f> 0b 83 05 55 0d 40 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0018:ffffc90000e07b40 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: ffff8880110b4200 RSI: ffffffff815b7455 RDI: fffff520001c0f5a
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815b05fe R11: 0000000000000000 R12: ffffffff894d0580
R13: ffffffff899e8f00 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000002837708 CR3: 0000000014a0f000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __debug_check_no_obj_freed lib/debugobjects.c:987 [inline]
 debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1018
 kmem_cache_free+0x13f/0x1c0 mm/slab.c:3696
 __put_task_struct+0x267/0x3f0 kernel/fork.c:742
 put_task_struct include/linux/sched/task.h:111 [inline]
 vhci_shutdown_connection+0x22a/0x340 drivers/usb/usbip/vhci_hcd.c:1023
 event_handler+0x1fe/0x500 drivers/usb/usbip/usbip_event.c:92
 process_one_work+0x98d/0x15f0 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296