usb 1-1: Direct firmware load for dvb-usb-dibusb-5.0.0.11.fw failed with error -2
usb 1-1: Falling back to sysfs fallback for: dvb-usb-dibusb-5.0.0.11.fw
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9 at drivers/base/firmware_loader/fallback.c:148 firmware_fallback_sysfs+0x746/0x9b0
Modules linked in:
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: usb_hub_wq hub_event
RIP: 0010:firmware_fallback_sysfs+0x746/0x9b0
Code: f2 fb e9 5d fc ff ff e8 f8 b2 f2 fb c6 05 2a aa 99 09 01 48 c7 c7 e0 f4 e6 8b e8 85 2b 5a fb e9 85 fc ff ff e8 db b2 f2 fb 90 <0f> 0b 90 4c 89 f7 48 c7 c6 c0 f5 e6 8b 4c 89 e2 e8 55 93 5e fb e9
RSP: 0018:ffffc900000e6870 EFLAGS: 00010287
RAX: ffffffff85cd6675 RBX: dffffc0000000000 RCX: 0000000000100000
RDX: ffffc90027d04000 RSI: 0000000000065d39 RDI: 0000000000065d3a
RBP: 0000000000000001 R08: ffffffff8f7cf777 R09: 1ffffffff1ef9eee
R10: dffffc0000000000 R11: fffffbfff1ef9eef R12: ffffffff8c300d20
R13: 0000000000001770 R14: ffff888108f400b0 R15: 00000000fffffff5
FS:  0000000000000000(0000) GS:ffff88818eb36000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbf68717d60 CR3: 0000000114f8a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 _request_firmware+0xf83/0x15b0
 request_firmware+0x36/0x50
 dvb_usb_download_firmware+0xaf/0x260
 dvb_usb_device_init+0xdd2/0x2580
 dibusb_probe+0x2d/0xf0
 usb_probe_interface+0x668/0xc30
 really_probe+0x26d/0x9e0
 __driver_probe_device+0x18c/0x2f0
 driver_probe_device+0x4f/0x430
 __device_attach_driver+0x2ce/0x530
 bus_for_each_drv+0x251/0x2e0
 __device_attach+0x2b8/0x400
 bus_probe_device+0x185/0x260
 device_add+0x7b6/0xb50
 usb_set_configuration+0x1a87/0x20e0
 usb_generic_driver_probe+0x8d/0x150
 usb_probe_device+0x1c4/0x390
 really_probe+0x26d/0x9e0
 __driver_probe_device+0x18c/0x2f0
 driver_probe_device+0x4f/0x430
 __device_attach_driver+0x2ce/0x530
 bus_for_each_drv+0x251/0x2e0
 __device_attach+0x2b8/0x400
 bus_probe_device+0x185/0x260
 device_add+0x7b6/0xb50
 usb_new_device+0xa39/0x16f0
 hub_event+0x2958/0x4a20
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x4bc/0x870
 ret_from_fork_asm+0x1a/0x30
 </TASK>
