------------[ cut here ]------------
WARNING: CPU: 1 PID: 5760 at drivers/base/firmware_loader/fallback.c:154 fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:154 [inline]
WARNING: CPU: 1 PID: 5760 at drivers/base/firmware_loader/fallback.c:154 firmware_fallback_sysfs+0x736/0x960 drivers/base/firmware_loader/fallback.c:244
Modules linked in:
CPU: 1 PID: 5760 Comm: kworker/1:3 Not tainted syzkaller #0
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:154 [inline]
RIP: 0010:firmware_fallback_sysfs+0x736/0x960 drivers/base/firmware_loader/fallback.c:244
Code: 3d 31 fc e9 56 fc ff ff e8 77 3d 31 fc c6 05 8f 66 20 09 01 48 c7 c7 40 bf 42 8b e8 94 75 2f 05 e9 79 fc ff ff e8 5a 3d 31 fc <0f> 0b 4c 89 f7 48 c7 c6 20 c0 42 8b 4c 89 e2 e8 56 ba 33 05 e9 5b
RSP: 0018:ffffc90002e3eba0 EFLAGS: 00010287
RAX: ffffffff85564df6 RBX: dffffc0000000000 RCX: 0000000000100000
RDX: ffffc900177b0000 RSI: 0000000000081a1c RDI: 0000000000081a1d
RBP: 0000000000000001 R08: ffffffff911eb587 R09: 1ffffffff223d6b0
R10: dffffc0000000000 R11: fffffbfff223d6b1 R12: ffffffff8bb5ee20
R13: 0000000000001770 R14: ffff88807e30a0a8 R15: 00000000fffffff5
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3cf260 CR3: 0000000023f1c000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 _request_firmware+0xf29/0x1520 drivers/base/firmware_loader/main.c:936
 request_firmware+0x36/0x50 drivers/base/firmware_loader/main.c:987
 comedi_load_firmware+0xa2/0x170 drivers/comedi/drivers.c:862
 usbduxfast_auto_attach+0x22b/0x580 drivers/comedi/drivers/usbduxfast.c:954
 comedi_auto_config+0x22d/0x360 drivers/comedi/drivers.c:1085
 usb_probe_interface+0x6eb/0xcf0 drivers/usb/core/driver.c:395
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x247/0xae0 drivers/base/dd.c:717
 __driver_probe_device+0x1f5/0x390 drivers/base/dd.c:879
 driver_probe_device+0x4f/0x420 drivers/base/dd.c:909
 __device_attach_driver+0x2ca/0x510 drivers/base/dd.c:1037
 bus_for_each_drv+0x252/0x2e0 drivers/base/bus.c:459
 __device_attach+0x2c1/0x420 drivers/base/dd.c:1109
 bus_probe_device+0x180/0x260 drivers/base/bus.c:580
 device_add+0x87c/0xc40 drivers/base/core.c:3700
 usb_set_configuration+0x1ad0/0x2150 drivers/usb/core/message.c:2265
 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x12a/0x260 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x247/0xae0 drivers/base/dd.c:717
 __driver_probe_device+0x1f5/0x390 drivers/base/dd.c:879
 driver_probe_device+0x4f/0x420 drivers/base/dd.c:909
 __device_attach_driver+0x2ca/0x510 drivers/base/dd.c:1037
 bus_for_each_drv+0x252/0x2e0 drivers/base/bus.c:459
 __device_attach+0x2c1/0x420 drivers/base/dd.c:1109
 bus_probe_device+0x180/0x260 drivers/base/bus.c:580
 device_add+0x87c/0xc40 drivers/base/core.c:3700
 usb_new_device+0x995/0x1550 drivers/usb/core/hub.c:2665
 hub_port_connect drivers/usb/core/hub.c:5534 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5674 [inline]
 port_event drivers/usb/core/hub.c:5838 [inline]
 hub_event+0x29d5/0x4a80 drivers/usb/core/hub.c:5920
 process_one_work kernel/workqueue.c:2657 [inline]
 process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734
 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>