------------[ cut here ]------------
ret
WARNING: drivers/base/firmware_loader/fallback.c:158 at fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:158 [inline], CPU#1: kworker/1:6/5713
WARNING: drivers/base/firmware_loader/fallback.c:158 at firmware_fallback_sysfs+0x76d/0xa50 drivers/base/firmware_loader/fallback.c:248, CPU#1: kworker/1:6/5713
Modules linked in:
CPU: 1 UID: 0 PID: 5713 Comm: kworker/1:6 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:158 [inline]
RIP: 0010:firmware_fallback_sysfs+0x76d/0xa50 drivers/base/firmware_loader/fallback.c:248
Code: 89 fb e9 48 fc ff ff e8 01 be 89 fb c6 05 94 14 46 0a 01 48 c7 c7 60 67 98 8c e8 ae a2 e9 fa e9 70 fc ff ff e8 e4 bd 89 fb 90 <0f> 0b 90 4c 89 f7 48 c7 c6 60 68 98 8c 4c 89 e2 e8 4e 41 ee fa e9
RSP: 0018:ffffc90004c2e860 EFLAGS: 00010283
RAX: ffffffff863e1f4c RBX: dffffc0000000000 RCX: 0000000000100000
RDX: ffffc90017ef0000 RSI: 000000000000e296 RDI: 000000000000e297
RBP: 0000000000000001 R08: ffffffff909ac37f R09: 1ffffffff213586f
R10: dffffc0000000000 R11: fffffbfff2135870 R12: ffffffff8ccdcec0
R13: 0000000000001770 R14: ffff88805a4480b0 R15: 00000000fffffff5
FS:  0000000000000000(0000) GS:ffff8881249ab000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffbe332d300 CR3: 0000000076a20000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 _request_firmware+0x1049/0x1780 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]
 load_application_firmware drivers/usb/serial/io_edgeport.c:2657 [inline]
 edge_startup+0x1ac7/0x6730 drivers/usb/serial/io_edgeport.c:2770
 usb_serial_probe+0x2523/0x2e50 drivers/usb/serial/usb-serial.c:1120
 usb_probe_interface+0x788/0xe50 drivers/usb/core/driver.c:399
 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+0x258/0x2f0 drivers/base/bus.c:500
 __device_attach+0x2c4/0x450 drivers/base/dd.c:1098
 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x12a/0x220 drivers/base/bus.c:620
 device_add+0x7d7/0xb80 drivers/base/core.c:3776
 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:293
 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+0x258/0x2f0 drivers/base/bus.c:500
 __device_attach+0x2c4/0x450 drivers/base/dd.c:1098
 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x12a/0x220 drivers/base/bus.c:620
 device_add+0x7d7/0xb80 drivers/base/core.c:3776
 usb_new_device+0x9aa/0x1690 drivers/usb/core/hub.c:2708
 hub_port_connect drivers/usb/core/hub.c:5580 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5720 [inline]
 port_event drivers/usb/core/hub.c:5884 [inline]
 hub_event+0x28e8/0x4d30 drivers/usb/core/hub.c:5966
 process_one_work kernel/workqueue.c:3387 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3470
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3551
 kthread+0x38b/0x480 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
 </TASK>