usb 4-1: USB disconnect, device number 37
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ODEBUG: free active (active state 0) object: ffff88813d3e1f30 object type: timer_list hint: tpt_trig_timer+0x0/0x310 net/mac80211/led.c:74
WARNING: lib/debugobjects.c:629 at debug_print_object+0x18e/0x2a0 lib/debugobjects.c:629, CPU#1: kworker/1:6/6812
Modules linked in:
CPU: 1 UID: 0 PID: 6812 Comm: kworker/1:6 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:debug_print_object+0x19b/0x2a0 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 82 e3 22 08 41 56 48 8b 14 dd 60 d8 af 87 4c 89 e6 <67> 48 0f b9 3a 58 83 05 0c 7d 1e 08 01 48 83 c4 18 5b 5d 41 5c 41
RSP: 0000:ffffc900014ff478 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: ffffffff87afd7a0 RSI: ffffffff87afd3c0 RDI: ffffffff8af472f0
RBP: 0000000000000001 R08: ffff88813d3e1f30 R09: ffffffff878d0200
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff87afd3c0
R13: ffffffff878d0240 R14: ffffffff8747fb40 R15: ffffc900014ff578
FS:  0000000000000000(0000) GS:ffff8882687ce000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6b2325feac CR3: 00000000094ae000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 __debug_check_no_obj_freed lib/debugobjects.c:1116 [inline]
 debug_check_no_obj_freed+0x4da/0x630 lib/debugobjects.c:1146
 slab_free_hook mm/slub.c:2616 [inline]
 slab_free mm/slub.c:6165 [inline]
 kfree+0x362/0x640 mm/slub.c:6483
 ieee80211_led_exit+0x162/0x1c0 net/mac80211/led.c:210
 ieee80211_unregister_hw+0x27e/0x360 net/mac80211/main.c:1715
 rt2x00lib_remove_hw drivers/net/wireless/ralink/rt2x00/rt2x00dev.c:1091 [inline]
 rt2x00lib_remove_dev+0x55b/0x670 drivers/net/wireless/ralink/rt2x00/rt2x00dev.c:1556
 rt2x00usb_disconnect+0x71/0x240 drivers/net/wireless/ralink/rt2x00/rt2x00usb.c:872
 usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:573 [inline]
 device_remove+0x12a/0x180 drivers/base/dd.c:565
 __device_release_driver drivers/base/dd.c:1284 [inline]
 device_release_driver_internal+0x42e/0x600 drivers/base/dd.c:1307
 bus_remove_device+0x22f/0x440 drivers/base/bus.c:616
 device_del+0x376/0x9b0 drivers/base/core.c:3878
 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:5407 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x1d0c/0x4af0 drivers/usb/core/hub.c:5953
 process_one_work+0xa23/0x19a0 kernel/workqueue.c:3276
 process_scheduled_works kernel/workqueue.c:3359 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3440
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x6c3/0xcb0 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 82 e3 22 08 	lea    0x822e382(%rip),%rdi        # 0x822e39f
  1d:	41 56                	push   %r14
  1f:	48 8b 14 dd 60 d8 af 	mov    -0x785027a0(,%rbx,8),%rdx
  26:	87
  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 0c 7d 1e 08 01 	addl   $0x1,0x81e7d0c(%rip)        # 0x81e7d43
  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