usb 4-1: New USB device found, idVendor=0d8c, idProduct=000e, bcdDevice=8e.8f usb 4-1: New USB device strings: Mfr=0, Product=24, SerialNumber=3 usb 4-1: Product: syz usb 4-1: SerialNumber: syz usb 4-1: config 0 descriptor?? cm109 4-1:0.8: invalid payload size 208, expected 4 input: CM109 USB driver as /devices/platform/dummy_hcd.3/usb4/4-1/4-1:0.8/input/input6 ------------[ cut here ]------------ URB ffff88802d0a7500 submitted while active WARNING: drivers/usb/core/urb.c:380 at usb_submit_urb+0x15fa/0x1910 drivers/usb/core/urb.c:380, CPU#0: kworker/0:3/5809 Modules linked in: CPU: 0 UID: 0 PID: 5809 Comm: kworker/0:3 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 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 ed d6 b8 fa 48 8d 3d 96 53 96 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:ffffc90002e96e50 EFLAGS: 00010287 RAX: 000000000003f528 RBX: ffff88802d0a7500 RCX: ffffc9001747d000 RDX: 0000000000100000 RSI: ffff88802d0a7500 RDI: ffffffff90e616d0 RBP: ffff8880212e0e80 R08: 0000000000000000 R09: fffffbfff21b2c42 R10: ffffc90002e96ed8 R11: 000000000000760b R12: ffff88802892d8a0 R13: ffff88802892d810 R14: ffff88802892d89f R15: ffff88802892d850 FS: 0000000000000000(0000) GS:ffff88812434a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fa1eff8 CR3: 000000000e598000 CR4: 00000000003526f0 Call Trace: cm109_input_open+0x27a/0x450 drivers/input/misc/cm109.c:566 input_open_device+0x24c/0x3d0 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+0x1ff/0x3e0 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+0x1ff/0x3e0 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+0x9d7/0x1920 kernel/workqueue.c:3275 process_scheduled_works kernel/workqueue.c:3358 [inline] worker_thread+0x5da/0xe40 kernel/workqueue.c:3439 kthread+0x370/0x450 kernel/kthread.c:467 ret_from_fork+0x754/0xd80 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- 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 ed d6 b8 fa call 0xfab8d70d 20: 48 8d 3d 96 53 96 09 lea 0x9965396(%rip),%rdi # 0x99653bd 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)