pvrusb2: Device initialization was not successful.
pvrusb2: Giving up since device microcontroller firmware appears to be missing.
pvrusb2: Invalid write control endpoint
usb 1-1: Direct firmware load for v4l-pvrusb2-73xxx-01.fw failed with error -2
usb 1-1: Falling back to sysfs fallback for: v4l-pvrusb2-73xxx-01.fw
------------[ cut here ]------------
ret
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/2367
WARNING: drivers/base/firmware_loader/fallback.c:148 at firmware_fallback_sysfs+0x746/0xa30 drivers/base/firmware_loader/fallback.c:238, CPU#0: pvrusb2-context/2367
Modules linked in:
CPU: 0 UID: 0 PID: 2367 Comm: pvrusb2-context Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:148 [inline]
RIP: 0010:firmware_fallback_sysfs+0x746/0xa30 drivers/base/firmware_loader/fallback.c:238
Code: b5 fb e9 5d fc ff ff e8 58 a7 b5 fb c6 05 4f 39 0d 0a 01 48 c7 c7 60 c9 55 8c e8 05 cb 16 fb e9 85 fc ff ff e8 3b a7 b5 fb 90 <0f> 0b 90 4c 89 f7 48 c7 c6 60 ca 55 8c 4c 89 e2 e8 c5 b4 1b fb e9
RSP: 0018:ffffc90007807670 EFLAGS: 00010293
RAX: ffffffff8610fa45 RBX: dffffc0000000000 RCX: ffff88802d488000
RDX: 0000000000000000 RSI: 00000000fffffff5 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff903444f7 R09: 1ffffffff206889e
R10: dffffc0000000000 R11: fffffbfff206889f R12: ffffffff8cb06380
R13: 0000000000001770 R14: ffff88803370d0b0 R15: 00000000fffffff5
FS:  0000000000000000(0000) GS:ffff888124ff3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdee0fe92f8 CR3: 000000002179c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 _request_firmware+0x1052/0x1780 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+0x1ba/0x910 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+0x428/0x3c50 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2338
 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:111 [inline]
 pvr2_context_thread_func+0x490/0xb40 drivers/media/usb/pvrusb2/pvrusb2-context.c:158
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>