usb 6-1: config 0 descriptor??
cm109 6-1:0.8: invalid payload size 0, expected 4
input: CM109 USB driver as /devices/platform/dummy_hcd.5/usb6/6-1/6-1:0.8/input/input27
------------[ cut here ]------------
URB ffff888021ff0c00 submitted while active
WARNING: drivers/usb/core/urb.c:379 at usb_submit_urb+0x7b/0x18b0 drivers/usb/core/urb.c:379, CPU#1: kworker/1:3/5809
Modules linked in:
CPU: 1 UID: 0 PID: 5809 Comm: kworker/1:3 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:usb_submit_urb+0x7e/0x18b0 drivers/usb/core/urb.c:379
Code: 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 87 30 6f fb 49 83 3e 00 74 40 e8 ac b9 05 fb 48 8d 3d f5 d0 da 08 48 89 de <67> 48 0f b9 3a b8 f0 ff ff ff eb 11 e8 91 b9 05 fb eb 05 e8 8a b9
RSP: 0018:ffffc900044d6b90 EFLAGS: 00010283
RAX: ffffffff86beeff4 RBX: ffff888021ff0c00 RCX: 0000000000100000
RDX: ffffc9001b6a3000 RSI: ffff888021ff0c00 RDI: ffffffff8f99c0f0
RBP: 000000000000000f R08: ffffffff8f8d41f7 R09: 1ffffffff1f1a83e
R10: dffffc0000000000 R11: fffffbfff1f1a83f R12: 0000000000000cc0
R13: ffff88803402c848 R14: ffff888021ff0c08 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125fba000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0b577056b8 CR3: 0000000038aa6000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 cm109_input_open+0x1fb/0x480 drivers/input/misc/cm109.c:566
 input_open_device+0x1f8/0x3b0 drivers/input/input.c:601
 kbd_connect+0xf6/0x150 drivers/tty/vt/keyboard.c:1631
 input_attach_handler drivers/input/input.c:1011 [inline]
 input_register_device+0xce0/0x1140 drivers/input/input.c:2395
 cm109_usb_probe+0x11a2/0x16a0 drivers/input/misc/cm109.c:797
 usb_probe_interface+0x659/0xc70 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x267/0xaf0 drivers/base/dd.c:709
 __driver_probe_device+0x1ef/0x380 drivers/base/dd.c:871
 driver_probe_device+0x4f/0x240 drivers/base/dd.c:901
 __device_attach_driver+0x279/0x430 drivers/base/dd.c:1029
 bus_for_each_drv+0x25b/0x2f0 drivers/base/bus.c:500
 __device_attach+0x2c8/0x450 drivers/base/dd.c:1101
 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1156
 bus_probe_device+0x12d/0x220 drivers/base/bus.c:613
 device_add+0x7e9/0xbb0 drivers/base/core.c:3706
 usb_set_configuration+0x1a87/0x2110 drivers/usb/core/message.c:2268
 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250
 usb_probe_device+0x1c4/0x3b0 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x267/0xaf0 drivers/base/dd.c:709
 __driver_probe_device+0x1ef/0x380 drivers/base/dd.c:871
 driver_probe_device+0x4f/0x240 drivers/base/dd.c:901
 __device_attach_driver+0x279/0x430 drivers/base/dd.c:1029
 bus_for_each_drv+0x25b/0x2f0 drivers/base/bus.c:500
 __device_attach+0x2c8/0x450 drivers/base/dd.c:1101
 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1156
 bus_probe_device+0x12d/0x220 drivers/base/bus.c:613
 device_add+0x7e9/0xbb0 drivers/base/core.c:3706
 usb_new_device+0x9f8/0x16e0 drivers/usb/core/hub.c:2695
 hub_port_connect drivers/usb/core/hub.c:5567 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x2a49/0x4f60 drivers/usb/core/hub.c:5953
 process_one_work+0x9a3/0x1710 kernel/workqueue.c:3312
 process_scheduled_works kernel/workqueue.c:3403 [inline]
 worker_thread+0xba8/0x11e0 kernel/workqueue.c:3489
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 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:	89 f0                	mov    %esi,%eax
   2:	48 c1 e8 03          	shr    $0x3,%rax
   6:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
   b:	74 08                	je     0x15
   d:	4c 89 f7             	mov    %r14,%rdi
  10:	e8 87 30 6f fb       	call   0xfb6f309c
  15:	49 83 3e 00          	cmpq   $0x0,(%r14)
  19:	74 40                	je     0x5b
  1b:	e8 ac b9 05 fb       	call   0xfb05b9cc
  20:	48 8d 3d f5 d0 da 08 	lea    0x8dad0f5(%rip),%rdi        # 0x8dad11c
  27:	48 89 de             	mov    %rbx,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	b8 f0 ff ff ff       	mov    $0xfffffff0,%eax
  34:	eb 11                	jmp    0x47
  36:	e8 91 b9 05 fb       	call   0xfb05b9cc
  3b:	eb 05                	jmp    0x42
  3d:	e8                   	.byte 0xe8
  3e:	8a                   	.byte 0x8a
  3f:	b9                   	.byte 0xb9