usb 2-1: config 0 descriptor??
input: CM109 USB driver as /devices/platform/dummy_hcd.1/usb2/2-1/2-1:0.8/input/input8
------------[ cut here ]------------
URB ffff8880226e9500 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/1:0/9794
Modules linked in:
CPU: 1 UID: 0 PID: 9794 Comm: kworker/1:0 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 e7 6c 76 fb 49 83 3e 00 74 40 e8 2c 63 0f fb 48 8d 3d 75 bb e2 08 48 89 de <67> 48 0f b9 3a b8 f0 ff ff ff eb 11 e8 11 63 0f fb eb 05 e8 0a 63
RSP: 0018:ffffc90003d66b30 EFLAGS: 00010287
RAX: ffffffff86b53104 RBX: ffff8880226e9500 RCX: 0000000000100000
RDX: ffffc9001ba81000 RSI: ffff8880226e9500 RDI: ffffffff8f97ec80
RBP: 000000000000000f R08: ffffffff8f8ba9f7 R09: 1ffffffff1f1753e
R10: dffffc0000000000 R11: fffffbfff1f1753f R12: 0000000000000cc0
R13: ffff888066edf048 R14: ffff8880226e9508 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888126204000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3150567dac CR3: 000000005d49a000 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:994 [inline]
 input_register_device+0xce0/0x1140 drivers/input/input.c:2378
 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 kernel/workqueue.c:3302 [inline]
 process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3385
 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3466
 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 e7 6c 76 fb       	call   0xfb766cfc
  15:	49 83 3e 00          	cmpq   $0x0,(%r14)
  19:	74 40                	je     0x5b
  1b:	e8 2c 63 0f fb       	call   0xfb0f634c
  20:	48 8d 3d 75 bb e2 08 	lea    0x8e2bb75(%rip),%rdi        # 0x8e2bb9c
  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 11 63 0f fb       	call   0xfb0f634c
  3b:	eb 05                	jmp    0x42
  3d:	e8                   	.byte 0xe8
  3e:	0a                   	.byte 0xa
  3f:	63                   	.byte 0x63