usb 2-1: New USB device found, idVendor=0d8c, idProduct=000e, bcdDevice=8e.8f usb 2-1: New USB device strings: Mfr=0, Product=24, SerialNumber=3 usb 2-1: Product: syz usb 2-1: SerialNumber: syz usb 2-1: config 0 descriptor?? cm109 2-1:0.8: invalid payload size 0, expected 4 input: CM109 USB driver as /devices/platform/dummy_hcd.1/usb2/2-1/2-1:0.8/input/input61 ------------[ cut here ]------------ URB ffff88803615e000 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/1:0/24 Modules linked in: CPU: 1 UID: 0 PID: 24 Comm: kworker/1:0 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP 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/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 27 ad f4 fa 49 83 3e 00 74 40 e8 2c 72 89 fa 48 8d 3d 45 be 01 09 48 89 de <67> 48 0f b9 3a b8 f0 ff ff ff eb 11 e8 11 72 89 fa eb 05 e8 0a 72 RSP: 0018:ffffc900001e6b30 EFLAGS: 00010287 RAX: ffffffff873c3a04 RBX: ffff88803615e000 RCX: 0000000000100000 RDX: ffffc90019a4d000 RSI: ffff88803615e000 RDI: ffffffff903df850 RBP: 000000000000000f R08: ffffffff903098f7 R09: 1ffffffff206131e R10: dffffc0000000000 R11: fffffbfff206131f R12: 0000000000000cc0 R13: ffff888055106048 R14: ffff88803615e008 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125393000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000002c0 CR3: 00000000451c0000 CR4: 00000000003526f0 DR0: 0000000000000008 DR1: 0000000000000002 DR2: 0000000000000404 DR3: ffffffffefffff14 DR6: 00000000ffff0ff0 DR7: 0000000000000400 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+0x1190/0x1690 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+0x258/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c5/0x450 drivers/base/dd.c:1101 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1156 bus_probe_device+0x12a/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+0x258/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c5/0x450 drivers/base/dd.c:1101 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1156 bus_probe_device+0x12a/0x220 drivers/base/bus.c:613 device_add+0x7e9/0xbb0 drivers/base/core.c:3706 usb_new_device+0xa08/0x16f0 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+0x2a1c/0x4f30 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 ---------------- 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 27 ad f4 fa call 0xfaf4ad3c 15: 49 83 3e 00 cmpq $0x0,(%r14) 19: 74 40 je 0x5b 1b: e8 2c 72 89 fa call 0xfa89724c 20: 48 8d 3d 45 be 01 09 lea 0x901be45(%rip),%rdi # 0x901be6c 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 72 89 fa call 0xfa89724c 3b: eb 05 jmp 0x42 3d: e8 .byte 0xe8 3e: 0a .byte 0xa 3f: 72 .byte 0x72