usb 4-1: SerialNumber: syz
usb 4-1: config 0 descriptor??
cm109 4-1:0.8: invalid payload size 0, expected 4
input: CM109 USB driver as /devices/platform/dummy_hcd.3/usb4/4-1/4-1:0.8/input/input25
------------[ cut here ]------------
URB ffff888034530e00 submitted while active
WARNING: drivers/usb/core/urb.c:380 at usb_submit_urb+0x15fa/0x1910 drivers/usb/core/urb.c:380, CPU#1: kworker/1:4/5874
Modules linked in:
CPU: 1 UID: 0 PID: 5874 Comm: kworker/1:4 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:usb_submit_urb+0x15fd/0x1910 drivers/usb/core/urb.c:380
Code: 00 48 8b 04 24 48 8b 90 b0 00 00 00 e9 73 ff ff ff bb ed ff ff ff e9 be f2 ff ff e8 0d fe c8 fa 48 8d 3d 46 d7 85 09 48 89 de <67> 48 0f b9 3a bb f0 ff ff ff e9 a0 f2 ff ff c7 44 24 30 00 00 00
RSP: 0018:ffffc900031c6de8 EFLAGS: 00010287
RAX: 0000000000056afc RBX: ffff888034530e00 RCX: ffffc90018fb0000
RDX: 0000000000100000 RSI: ffff888034530e00 RDI: ffffffff90c3d4a0
RBP: ffff888032d2a140 R08: 0000000000000000 R09: fffffbfff216e97a
R10: ffffc900031c6e70 R11: 00000000000075a9 R12: ffff88807c8fc8a0
R13: ffff88807c8fc810 R14: ffff88807c8fc89f R15: ffff88807c8fc850
FS:  0000000000000000(0000) GS:ffff8881246dc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002000 CR3: 000000007baf7000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 cm109_input_open+0x27a/0x450 drivers/input/misc/cm109.c:566
 input_open_device+0x24c/0x3e0 drivers/input/input.c:601
 kbd_connect+0x124/0x180 drivers/tty/vt/keyboard.c:1563
 input_attach_handler.isra.0+0x177/0x1e0 drivers/input/input.c:994
 input_register_device.cold+0x139/0x375 drivers/input/input.c:2378
 cm109_usb_probe+0x128d/0x17f0 drivers/input/misc/cm109.c:797
 usb_probe_interface+0x303/0x8f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:583 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:661
 __driver_probe_device+0x1de/0x400 drivers/base/dd.c:803
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:833
 __device_attach_driver+0x1df/0x340 drivers/base/dd.c:961
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1033
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1088
 bus_probe_device+0x64/0x160 drivers/base/bus.c:574
 device_add+0x11d9/0x1950 drivers/base/core.c:3689
 usb_set_configuration+0xd97/0x1c60 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0xa1/0xe0 drivers/usb/core/generic.c:250
 usb_probe_device+0xef/0x400 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:583 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:661
 __driver_probe_device+0x1de/0x400 drivers/base/dd.c:803
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:833
 __device_attach_driver+0x1df/0x340 drivers/base/dd.c:961
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1033
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1088
 bus_probe_device+0x64/0x160 drivers/base/bus.c:574
 device_add+0x11d9/0x1950 drivers/base/core.c:3689
 usb_new_device.cold+0x685/0x115c 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+0x314d/0x4af0 drivers/usb/core/hub.c:5953
 process_one_work+0x9c2/0x1840 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x5da/0xe40 kernel/workqueue.c:3421
 kthread+0x3b3/0x730 kernel/kthread.c:463
 ret_from_fork+0x754/0xaf0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 48 8b             	add    %cl,-0x75(%rax)
   3:	04 24                	add    $0x24,%al
   5:	48 8b 90 b0 00 00 00 	mov    0xb0(%rax),%rdx
   c:	e9 73 ff ff ff       	jmp    0xffffff84
  11:	bb ed ff ff ff       	mov    $0xffffffed,%ebx
  16:	e9 be f2 ff ff       	jmp    0xfffff2d9
  1b:	e8 0d fe c8 fa       	call   0xfac8fe2d
  20:	48 8d 3d 46 d7 85 09 	lea    0x985d746(%rip),%rdi        # 0x985d76d
  27:	48 89 de             	mov    %rbx,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	bb f0 ff ff ff       	mov    $0xfffffff0,%ebx
  34:	e9 a0 f2 ff ff       	jmp    0xfffff2d9
  39:	c7                   	.byte 0xc7
  3a:	44 24 30             	rex.R and $0x30,%al
  3d:	00 00                	add    %al,(%rax)