usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 3-1: dvb_usb_v2: found a 'HCW 117xxx' in warm state
usb 3-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer
dvbdev: DVB: registering new adapter (HCW 117xxx)
usb 3-1: media controller created
dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered.
usb 3-1: selecting invalid altsetting 1
set interface failed
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 5631 Comm: kworker/0:3 Not tainted 5.2.0-rc1+ #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xca/0x13e lib/dump_stack.c:113
 assign_lock_key kernel/locking/lockdep.c:774 [inline]
 register_lock_class+0x11ae/0x1240 kernel/locking/lockdep.c:1083
 __lock_acquire+0x11d/0x5340 kernel/locking/lockdep.c:3673
 lock_acquire+0x100/0x2b0 kernel/locking/lockdep.c:4302
 __mutex_lock_common kernel/locking/mutex.c:925 [inline]
 __mutex_lock+0xf9/0x12b0 kernel/locking/mutex.c:1072
 mxl111sf_ctrl_msg+0xb8/0x210 drivers/media/usb/dvb-usb-v2/mxl111sf.c:69
 mxl111sf_write_reg+0x8b/0x120 drivers/media/usb/dvb-usb-v2/mxl111sf.c:126
 mxl1x1sf_soft_reset+0x6b/0x190 drivers/media/usb/dvb-usb-v2/mxl111sf-phy.c:56
 mxl111sf_lg2160_frontend_attach+0x283/0x900 drivers/media/usb/dvb-usb-v2/mxl111sf.c:521
 dvb_usbv2_adapter_frontend_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:654 [inline]
 dvb_usbv2_adapter_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:817 [inline]
 dvb_usbv2_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:878 [inline]
 dvb_usbv2_probe.cold+0x1e1d/0x2575 drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:993
 usb_probe_interface+0x30b/0x7a0 drivers/usb/core/driver.c:361
 really_probe+0x287/0x660 drivers/base/dd.c:509
 driver_probe_device+0x104/0x210 drivers/base/dd.c:670
 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:777
 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
 __device_attach+0x217/0x360 drivers/base/dd.c:843
 bus_probe_device+0x1e6/0x290 drivers/base/bus.c:514
 device_add+0xae6/0x1700 drivers/base/core.c:2111
 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
 usb_probe_device+0xa2/0x100 drivers/usb/core/driver.c:266
 really_probe+0x287/0x660 drivers/base/dd.c:509
 driver_probe_device+0x104/0x210 drivers/base/dd.c:670
 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:777
 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
 __device_attach+0x217/0x360 drivers/base/dd.c:843
 bus_probe_device+0x1e6/0x290 drivers/base/bus.c:514
 device_add+0xae6/0x1700 drivers/base/core.c:2111
 usb_new_device.cold+0x8c1/0x1016 drivers/usb/core/hub.c:2534
 hub_port_connect drivers/usb/core/hub.c:5089 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
 port_event drivers/usb/core/hub.c:5350 [inline]
 hub_event+0x1adc/0x35a0 drivers/usb/core/hub.c:5432
 process_one_work+0x90a/0x1580 kernel/workqueue.c:2268
 worker_thread+0x96/0xe20 kernel/workqueue.c:2414
 kthread+0x30e/0x420 kernel/kthread.c:254
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
usb 3-1: dvb_usb_v2: usb_bulk_msg() failed=-22
error writing reg: 0xff, val: 0x00
dvb_usb_mxl111sf: probe of 3-1:114.0 failed with error -22
dummy_hcd dummy_hcd.2: port status 0x00010100 has changes
usb 3-1: USB disconnect, device number 77
usb usb3: dummy_bus_suspend
usb usb6: dummy_bus_resume
dummy_hcd dummy_hcd.5: port status 0x00010101 has changes
dummy_hcd dummy_hcd.5: port status 0x00100503 has changes
usb 6-1: new high-speed USB device number 51 using dummy_hcd
dummy_hcd dummy_hcd.5: port status 0x00100503 has changes
usb 6-1: Using ep0 maxpacket: 8
usb 6-1: config 0 has an invalid interface number: 157 but max is 0
usb 6-1: config 0 has no interface number 0
usb 6-1: New USB device found, idVendor=0fd9, idProduct=0018, bcdDevice=85.cb
usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 6-1: config 0 descriptor??
usb usb5: dummy_bus_resume
dummy_hcd dummy_hcd.4: port status 0x00010101 has changes
dummy_hcd dummy_hcd.4: port status 0x00100503 has changes
usb 5-1: new high-speed USB device number 86 using dummy_hcd