corsair 0003:1B1C:1B02.0037: hidraw0: USB HID v0.00 Device [HID 1b1c:1b02] on usb-dummy_hcd.7-1/input0
corsair 0003:1B1C:1B02.0037: Failed to get K90 initial state (error -71).
usb 8-1: USB disconnect, device number 4
------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff88807c6d3ac8 object type: work_struct hint: k90_backlight_work+0x0/0x200 drivers/hid/hid-corsair.c:238
WARNING: lib/debugobjects.c:629 at debug_print_object+0x198/0x2b0 lib/debugobjects.c:629, CPU#0: kworker/0:2/186
Modules linked in:
CPU: 0 UID: 0 PID: 186 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:debug_print_object+0x1a5/0x2b0 lib/debugobjects.c:629
Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4f 48 8d 3d 18 7b 25 0c 41 56 48 8b 14 ed 40 37 60 8c 4c 89 e6 <67> 48 0f b9 3a 58 83 05 22 72 1a 0c 01 48 83 c4 18 5b 5d 41 5c 41
RSP: 0018:ffffc90002f47208 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffc90002f472f0 RCX: 0000000000000000
RDX: ffffffff8c603680 RSI: ffffffff8c603220 RDI: ffffffff914db850
RBP: 0000000000000003 R08: ffff88807c6d3ac8 R09: ffffffff8bee2560
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c603220
R13: ffffffff8bee25a0 R14: ffffffff88f92470 R15: ffffc90002f47308
FS:  0000000000000000(0000) GS:ffff888123bcc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556a5c9cd000 CR3: 000000000eb94000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __debug_check_no_obj_freed lib/debugobjects.c:1171 [inline]
 debug_check_no_obj_freed+0x4da/0x630 lib/debugobjects.c:1201
 slab_free_hook mm/slub.c:2608 [inline]
 slab_free mm/slub.c:6377 [inline]
 kfree+0x3d6/0x6c0 mm/slub.c:6692
 k90_cleanup_backlight drivers/hid/hid-corsair.c:530 [inline]
 corsair_remove+0x23c/0x2f0 drivers/hid/hid-corsair.c:603
 hid_device_remove+0xd1/0x200 drivers/hid/hid-core.c:2897
 device_remove+0xcb/0x180 drivers/base/dd.c:616
 __device_release_driver drivers/base/dd.c:1349 [inline]
 device_release_driver_internal+0x44e/0x620 drivers/base/dd.c:1372
 bus_remove_device+0x2bc/0x560 drivers/base/bus.c:664
 device_del+0x376/0x9b0 drivers/base/core.c:3961
 hid_remove_device drivers/hid/hid-core.c:3126 [inline]
 hid_destroy_device+0x19c/0x240 drivers/hid/hid-core.c:3148
 usbhid_disconnect+0xa0/0xe0 drivers/hid/usbhid/hid-core.c:1479
 usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:618 [inline]
 device_remove+0x12a/0x180 drivers/base/dd.c:610
 __device_release_driver drivers/base/dd.c:1349 [inline]
 device_release_driver_internal+0x44e/0x620 drivers/base/dd.c:1372
 bus_remove_device+0x2bc/0x560 drivers/base/bus.c:664
 device_del+0x376/0x9b0 drivers/base/core.c:3961
 usb_disable_device+0x367/0x810 drivers/usb/core/message.c:1478
 usb_disconnect+0x2e2/0x9a0 drivers/usb/core/hub.c:2345
 hub_port_connect drivers/usb/core/hub.c:5415 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5715 [inline]
 port_event drivers/usb/core/hub.c:5879 [inline]
 hub_event+0x1bb1/0x4420 drivers/usb/core/hub.c:5961
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	b8 00 00 00 00       	mov    $0x0,%eax
   5:	00 fc                	add    %bh,%ah
   7:	ff                   	lcall  (bad)
   8:	df 48 89             	fisttps -0x77(%rax)
   b:	fa                   	cli
   c:	48 c1 ea 03          	shr    $0x3,%rdx
  10:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  14:	75 4f                	jne    0x65
  16:	48 8d 3d 18 7b 25 0c 	lea    0xc257b18(%rip),%rdi        # 0xc257b35
  1d:	41 56                	push   %r14
  1f:	48 8b 14 ed 40 37 60 	mov    -0x739fc8c0(,%rbp,8),%rdx
  26:	8c
  27:	4c 89 e6             	mov    %r12,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	58                   	pop    %rax
  30:	83 05 22 72 1a 0c 01 	addl   $0x1,0xc1a7222(%rip)        # 0xc1a7259
  37:	48 83 c4 18          	add    $0x18,%rsp
  3b:	5b                   	pop    %rbx
  3c:	5d                   	pop    %rbp
  3d:	41 5c                	pop    %r12
  3f:	41                   	rex.B