------------[ cut here ]------------
WARNING: CPU: 1 PID: 5576 at drivers/base/firmware_loader/fallback.c:144 fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:144 [inline]
WARNING: CPU: 1 PID: 5576 at drivers/base/firmware_loader/fallback.c:144 firmware_fallback_sysfs+0x722/0x950 drivers/base/firmware_loader/fallback.c:234
Modules linked in:
CPU: 1 PID: 5576 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:144 [inline]
RIP: 0010:firmware_fallback_sysfs+0x722/0x950 drivers/base/firmware_loader/fallback.c:234
Code: df e8 c2 3c f9 ff 45 89 e7 eb bc e8 c8 b7 31 fc c6 05 aa 41 21 09 01 48 c7 c7 a0 b2 42 8b e8 15 c9 2d 05 eb a7 e8 ae b7 31 fc <0f> 0b 4c 89 f7 48 c7 c6 80 b3 42 8b 4c 89 e2 e8 da 0d 32 05 eb 8c
RSP: 0018:ffffc90003a36ac0 EFLAGS: 00010283
RAX: ffffffff8555ba72 RBX: dffffc0000000000 RCX: 0000000000100000
RDX: ffffc9001851a000 RSI: 0000000000044807 RDI: 0000000000044808
RBP: 0000000000000001 R08: ffffffff911ed577 R09: 1ffffffff223daae
R10: dffffc0000000000 R11: fffffbfff223daaf R12: ffffffff8b762f20
R13: 0000000000001770 R14: ffff88802d64d0a8 R15: 00000000fffffff5
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c415025 CR3: 00000000242c6000 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
 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+0xbb/0xce0 drivers/usb/misc/ezusb.c:123
 keyspan_fake_startup+0x230/0x420 drivers/usb/serial/keyspan.c:1680
 usb_serial_probe+0x24c6/0x2ce0 drivers/usb/serial/usb-serial.c:1125