------------[ cut here ]------------ URB ffff888033e28d00 submitted while active WARNING: drivers/usb/core/urb.c:379 at usb_submit_urb+0x79/0x18b0 drivers/usb/core/urb.c:379, CPU#1: kworker/1:0/31 Modules linked in: CPU: 1 UID: 0 PID: 31 Comm: kworker/1:0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:usb_submit_urb+0x7c/0x18b0 drivers/usb/core/urb.c:379 Code: 4c 89 f0 48 c1 e8 03 80 3c 28 00 74 08 4c 89 f7 e8 c9 b9 56 fb 49 83 3e 00 74 40 e8 2e 46 ed fa 48 8d 3d 57 dc e3 08 48 89 de <67> 48 0f b9 3a b8 f0 ff ff ff eb 11 e8 13 46 ed fa eb 05 e8 0c 46 RSP: 0000:ffffc90000a5eb80 EFLAGS: 00010287 RAX: ffffffff86d89312 RBX: ffff888033e28d00 RCX: 0000000000100000 RDX: ffffc9001a587000 RSI: ffff888033e28d00 RDI: ffffffff8fbc6f70 RBP: dffffc0000000000 R08: ffffffff8fafa337 R09: 1ffffffff1f5f466 R10: dffffc0000000000 R11: fffffbfff1f5f467 R12: ffff88805fe9ac58 R13: 1ffff1100bfd358b R14: ffff888033e28d08 R15: 0000000000000cc0 FS: 0000000000000000(0000) GS:ffff888125d3e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2b2a0e CR3: 000000003f202000 CR4: 00000000003526f0 Call Trace: port100_send_frame_async drivers/nfc/port100.c:783 [inline] port100_send_cmd_async+0x84f/0xcc0 drivers/nfc/port100.c:879 port100_send_cmd_sync drivers/nfc/port100.c:919 [inline] port100_get_firmware_version+0x1a1/0x360 drivers/nfc/port100.c:1035 port100_probe+0x7cb/0xba0 drivers/nfc/port100.c:1563 usb_probe_interface+0x653/0xc60 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x254/0xae0 drivers/base/dd.c:706 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898 __device_attach_driver+0x270/0x410 drivers/base/dd.c:1026 bus_for_each_drv+0x25b/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c7/0x450 drivers/base/dd.c:1098 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153 bus_probe_device+0x12d/0x220 drivers/base/bus.c:620 device_add+0x7d7/0xb80 drivers/base/core.c:3772 usb_set_configuration+0x1ad8/0x2180 drivers/usb/core/message.c:2268 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250 usb_probe_device+0x1c3/0x3b0 drivers/usb/core/driver.c:291 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x254/0xae0 drivers/base/dd.c:706 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898 __device_attach_driver+0x270/0x410 drivers/base/dd.c:1026 bus_for_each_drv+0x25b/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c7/0x450 drivers/base/dd.c:1098 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153 bus_probe_device+0x12d/0x220 drivers/base/bus.c:620 device_add+0x7d7/0xb80 drivers/base/core.c:3772 usb_new_device+0x98d/0x1610 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+0x28cf/0x4cf0 drivers/usb/core/hub.c:5953 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486 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: 4c 89 f0 mov %r14,%rax 3: 48 c1 e8 03 shr $0x3,%rax 7: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) b: 74 08 je 0x15 d: 4c 89 f7 mov %r14,%rdi 10: e8 c9 b9 56 fb call 0xfb56b9de 15: 49 83 3e 00 cmpq $0x0,(%r14) 19: 74 40 je 0x5b 1b: e8 2e 46 ed fa call 0xfaed464e 20: 48 8d 3d 57 dc e3 08 lea 0x8e3dc57(%rip),%rdi # 0x8e3dc7e 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 13 46 ed fa call 0xfaed464e 3b: eb 05 jmp 0x42 3d: e8 .byte 0xe8 3e: 0c 46 or $0x46,%al