pvrusb2: Did you install the pvrusb2 firmware files in their proper location?
pvrusb2: request_firmware unable to locate fx2 controller file v4l-pvrusb2-73xxx-01.fw
pvrusb2: Failure uploading firmware1
pvrusb2: Device initialization was not successful.
pvrusb2: Giving up since device microcontroller firmware appears to be missing.
usb 4-1: Direct firmware load for v4l-pvrusb2-73xxx-01.fw failed with error -2
usb 4-1: Falling back to sysfs fallback for: v4l-pvrusb2-73xxx-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/2345
WARNING: drivers/base/firmware_loader/fallback.c:148 at firmware_fallback_sysfs+0x746/0x9b0 drivers/base/firmware_loader/fallback.c:238, CPU#0: pvrusb2-context/2345
Modules linked in:
CPU: 0 UID: 0 PID: 2345 Comm: pvrusb2-context Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
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: ac fb e9 5d fc ff ff e8 38 b2 ac fb c6 05 65 dc bb 09 01 48 c7 c7 c0 22 2c 8c e8 25 4c 14 fb e9 85 fc ff ff e8 1b b2 ac fb 90 <0f> 0b 90 4c 89 f7 48 c7 c6 a0 23 2c 8c 4c 89 e2 e8 95 83 19 fb e9
RSP: 0018:ffffc900045f75b0 EFLAGS: 00010293
RAX: ffffffff86135955 RBX: dffffc0000000000 RCX: ffff88802a0e5ac0
RDX: 0000000000000000 RSI: 00000000fffffff5 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff8fe53a37 R09: 1ffffffff1fca746
R10: dffffc0000000000 R11: fffffbfff1fca747 R12: ffffffff8c8528e0
R13: 0000000000001770 R14: ffff888022ae10b0 R15: 00000000fffffff5
FS:  0000000000000000(0000) GS:ffff8881257a7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbf579f84c0 CR3: 000000003041a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 _request_firmware+0xf83/0x15b0 drivers/base/firmware_loader/main.c:906
 request_firmware+0x36/0x50 drivers/base/firmware_loader/main.c:957
 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+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>