pvrusb2: Device initialization was not successful.
pvrusb2: Giving up since device microcontroller firmware appears to be missing.
pvrusb2: Invalid write control endpoint
usb 5-1: Direct firmware load for v4l-pvrusb2-24xxx-01.fw failed with error -2
usb 5-1: Falling back to sysfs fallback for: v4l-pvrusb2-24xxx-01.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: pvrusb2-context/2343
WARNING: drivers/base/firmware_loader/fallback.c:148 at firmware_fallback_sysfs+0x746/0xa40 drivers/base/firmware_loader/fallback.c:238, CPU#0: pvrusb2-context/2343
Modules linked in:
CPU: 0 UID: 0 PID: 2343 Comm: pvrusb2-context Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
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: ec fb e9 5d fc ff ff e8 08 07 ec fb c6 05 c9 4b 97 09 01 48 c7 c7 80 1d e9 8b e8 55 b7 52 fb e9 85 fc ff ff e8 eb 06 ec fb 90 <0f> 0b 90 4c 89 f7 48 c7 c6 80 1e e9 8b 4c 89 e2 e8 55 1f 57 fb e9
RSP: 0018:ffffc900052575f0 EFLAGS: 00010293
RAX: ffffffff85d4f0d5 RBX: dffffc0000000000 RCX: ffff88802a0b5b80
RDX: 0000000000000000 RSI: 00000000fffffff5 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8f822377 R09: 1ffffffff1f0446e
R10: dffffc0000000000 R11: fffffbfff1f0446f R12: ffffffff8c412b60
R13: 0000000000001770 R14: ffff888056f4a0b0 R15: 00000000fffffff5
FS:  0000000000000000(0000) GS:ffff888125e1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f89621f84c0 CR3: 000000000dd3a000 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
 pvr2_locate_firmware+0xb3/0x500 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:1359
 pvr2_upload_firmware1+0x1b4/0x900 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:1426
 pvr2_hdw_setup_low drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2107 [inline]
 pvr2_hdw_setup drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2261 [inline]
 pvr2_hdw_initialize+0x3df/0x3ac0 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2338
 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:111 [inline]
 pvr2_context_thread_func+0x487/0xaf0 drivers/media/usb/pvrusb2/pvrusb2-context.c:158
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>