usb 3-1: ezusb_ihex_firmware_download - request "keyspan/usa19w.fw" failed
usb 3-1: failed to load firmware "keyspan/usa19w.fw"
keyspan 3-1:4.30: probe with driver keyspan failed with error -2
keyspan 3-1:4.132: Keyspan - (without firmware) converter detected
usb 3-1: Direct firmware load for keyspan/usa19w.fw failed with error -2
usb 3-1: Falling back to sysfs fallback for: keyspan/usa19w.fw
------------[ cut here ]------------
WARNING: drivers/base/firmware_loader/fallback.c:148 at fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:148 [inline], CPU#0: kworker/0:1/10
WARNING: drivers/base/firmware_loader/fallback.c:148 at firmware_fallback_sysfs+0x746/0xa40 drivers/base/firmware_loader/fallback.c:238, CPU#0: kworker/0:1/10
Modules linked in:
CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: usb_hub_wq hub_event
RIP: 0010:fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:148 [inline]
RIP: 0010:firmware_fallback_sysfs+0x746/0xa40 drivers/base/firmware_loader/fallback.c:238
Code: e3 fb e9 5d fc ff ff e8 98 2b e3 fb c6 05 1c f9 ce 09 01 48 c7 c7 60 e2 0a 8c e8 a5 e3 48 fb e9 85 fc ff ff e8 7b 2b e3 fb 90 <0f> 0b 90 4c 89 f7 48 c7 c6 60 e3 0a 8c 4c 89 e2 e8 85 8f 4d fb e9
RSP: 0018:ffffc900000f6870 EFLAGS: 00010246
RAX: ffffffff85dec815 RBX: dffffc0000000000 RCX: 0000000000100000
RDX: ffffc90017f8d000 RSI: 00000000000fffff RDI: 0000000000100000
RBP: 0000000000000001 R08: ffffffff8fc3a577 R09: 1ffffffff1f874ae
R10: dffffc0000000000 R11: fffffbfff1f874af R12: ffffffff8c3f6960
R13: 0000000000001770 R14: ffff88814e4b10b0 R15: 00000000fffffff5
FS:  0000000000000000(0000) GS:ffff8881259ed000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fabf4ff84c0 CR3: 000000000e13a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 _request_firmware+0xfa4/0x1680 drivers/base/firmware_loader/main.c:898
 request_firmware+0x36/0x50 drivers/base/firmware_loader/main.c:948
 request_ihex_firmware include/linux/ihex.h:71 [inline]
 ezusb_ihex_firmware_download drivers/usb/misc/ezusb.c:66 [inline]
 ezusb_fx1_ihex_firmware_download+0xb0/0xcf0 drivers/usb/misc/ezusb.c:123
 keyspan_fake_startup+0x230/0x4b0 drivers/usb/serial/keyspan.c:1675
 usb_serial_probe+0x2537/0x2e70 drivers/usb/serial/usb-serial.c:1123
 usb_probe_interface+0x668/0xc90 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26d/0xad0 drivers/base/dd.c:659
 __driver_probe_device+0x18c/0x320 drivers/base/dd.c:801
 driver_probe_device+0x4f/0x240 drivers/base/dd.c:831
 __device_attach_driver+0x279/0x430 drivers/base/dd.c:959
 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:500
 __device_attach+0x2b8/0x430 drivers/base/dd.c:1031
 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1086
 bus_probe_device+0x12a/0x220 drivers/base/bus.c:574
 device_add+0x7b6/0xb80 drivers/base/core.c:3689
 usb_set_configuration+0x1a87/0x2110 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250
 usb_probe_device+0x1c4/0x3c0 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26d/0xad0 drivers/base/dd.c:659
 __driver_probe_device+0x18c/0x320 drivers/base/dd.c:801
 driver_probe_device+0x4f/0x240 drivers/base/dd.c:831
 __device_attach_driver+0x279/0x430 drivers/base/dd.c:959
 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:500
 __device_attach+0x2b8/0x430 drivers/base/dd.c:1031
 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1086
 bus_probe_device+0x12a/0x220 drivers/base/bus.c:574
 device_add+0x7b6/0xb80 drivers/base/core.c:3689
 usb_new_device+0xa39/0x1720 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+0x29b1/0x4ef0 drivers/usb/core/hub.c:5953
 process_one_work+0x93a/0x15a0 kernel/workqueue.c:3261
 process_scheduled_works kernel/workqueue.c:3344 [inline]
 worker_thread+0x9b0/0xee0 kernel/workqueue.c:3425
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>