cm109 3-1:0.8: invalid payload size 0, expected 4 input: CM109 USB driver as /devices/platform/dummy_hcd.2/usb3/3-1/3-1:0.8/input/input19 ------------[ cut here ]------------ URB ffff88802c86f200 submitted while active WARNING: drivers/usb/core/urb.c:379 at usb_submit_urb+0x7b/0x18c0 drivers/usb/core/urb.c:379, CPU#0: kworker/0:2/127 Modules linked in: CPU: 0 UID: 0 PID: 127 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:usb_submit_urb+0x7e/0x18c0 drivers/usb/core/urb.c:379 Code: 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 a7 94 6f fb 49 83 3e 00 74 40 e8 bc 0b 06 fb 48 8d 3d b5 6f d8 08 48 89 de <67> 48 0f b9 3a b8 f0 ff ff ff eb 11 e8 a1 0b 06 fb eb 05 e8 9a 0b RSP: 0018:ffffc9000156eb90 EFLAGS: 00010293 RAX: ffffffff86be8ac4 RBX: ffff88802c86f200 RCX: ffff88801ebd3d80 RDX: 0000000000000000 RSI: ffff88802c86f200 RDI: ffffffff8f96fa80 RBP: 000000000000000f R08: ffffffff8f8a76f7 R09: 1ffffffff1f14ede R10: dffffc0000000000 R11: fffffbfff1f14edf R12: 0000000000000cc0 R13: ffff888036b3d048 R14: ffff88802c86f208 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125f2d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5d71e45f40 CR3: 000000004488a000 CR4: 00000000003526f0 Call Trace: 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+0xbee/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 ---------------- 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 a7 94 6f fb call 0xfb6f94bc 15: 49 83 3e 00 cmpq $0x0,(%r14) 19: 74 40 je 0x5b 1b: e8 bc 0b 06 fb call 0xfb060bdc 20: 48 8d 3d b5 6f d8 08 lea 0x8d86fb5(%rip),%rdi # 0x8d86fdc 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 a1 0b 06 fb call 0xfb060bdc 3b: eb 05 jmp 0x42 3d: e8 .byte 0xe8 3e: 9a (bad) 3f: 0b .byte 0xb