syzbot

usb 2-1: Falling back to sysfs fallback for: edgeport/boot.fw
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WARNING: CPU: 0 PID: 16628 at drivers/base/firmware_loader/fallback.c:148 fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:148 [inline]
WARNING: CPU: 0 PID: 16628 at drivers/base/firmware_loader/fallback.c:148 firmware_fallback_sysfs+0x746/0x9b0 drivers/base/firmware_loader/fallback.c:238
Modules linked in:
CPU: 0 UID: 0 PID: 16628 Comm: kworker/0:8 Not tainted 6.15.0-rc5-syzkaller-00043-gd76bb1ebb558 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
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+0x746/0x9b0 drivers/base/firmware_loader/fallback.c:238
Code: ce fb e9 5d fc ff ff e8 28 89 ce fb c6 05 11 96 77 09 01 48 c7 c7 40 66 e8 8b e8 25 4a 36 fb e9 85 fc ff ff e8 0b 89 ce fb 90 <0f> 0b 90 4c 89 f7 48 c7 c6 20 67 e8 8b 4c 89 e2 e8 25 10 3b fb e9
RSP: 0018:ffffc900044de8f0 EFLAGS: 00010283
RAX: ffffffff85f14745 RBX: dffffc0000000000 RCX: 0000000000100000
RDX: ffffc90019339000 RSI: 0000000000063be2 RDI: 0000000000063be3
RBP: 0000000000000001 R08: ffffffff8f7ed977 R09: 1ffffffff1efdb2e
R10: dffffc0000000000 R11: fffffbfff1efdb2f R12: ffffffff8c1aef20
R13: 0000000000001770 R14: ffff88807f6980b0 R15: 00000000fffffff5
FS:  0000000000000000(0000) GS:ffff8881260cb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd8d24abf4 CR3: 000000002ed4a000 CR4: 00000000003526f0
DR0: 0000000000e000b6 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 _request_firmware+0xf83/0x15b0 drivers/base/firmware_loader/main.c:941
 request_firmware+0x36/0x50 drivers/base/firmware_loader/main.c:992
 request_ihex_firmware include/linux/ihex.h:71 [inline]
 update_edgeport_E2PROM drivers/usb/serial/io_edgeport.c:333 [inline]
 edge_startup+0x251b/0x5cc0 drivers/usb/serial/io_edgeport.c:2771
 usb_serial_probe+0x2506/0x2d20 drivers/usb/serial/usb-serial.c:1123
 usb_probe_interface+0x641/0xbc0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26a/0x9a0 drivers/base/dd.c:657
 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:799
 driver_probe_device+0x4f/0x430 drivers/base/dd.c:829
 __device_attach_driver+0x2ce/0x530 drivers/base/dd.c:957
 bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:462
 __device_attach+0x2b8/0x400 drivers/base/dd.c:1029
 bus_probe_device+0x185/0x260 drivers/base/bus.c:537
 device_add+0x7b6/0xb50 drivers/base/core.c:3692
 usb_set_configuration+0x1a87/0x20e0 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250
 usb_probe_device+0x1c1/0x390 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26a/0x9a0 drivers/base/dd.c:657
 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:799
 driver_probe_device+0x4f/0x430 drivers/base/dd.c:829
 __device_attach_driver+0x2ce/0x530 drivers/base/dd.c:957
 bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:462
 __device_attach+0x2b8/0x400 drivers/base/dd.c:1029
 bus_probe_device+0x185/0x260 drivers/base/bus.c:537
 device_add+0x7b6/0xb50 drivers/base/core.c:3692
 usb_new_device+0xa39/0x16c0 drivers/usb/core/hub.c:2663
 hub_port_connect drivers/usb/core/hub.c:5531 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5671 [inline]
 port_event drivers/usb/core/hub.c:5831 [inline]
 hub_event+0x2941/0x4a00 drivers/usb/core/hub.c:5913
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>