usb 2-1: string descriptor 0 read error: -71
comedi comedi0: Wrong number of endpoints
ni6501 2-1:184.46: driver 'ni6501' failed to auto-configure device.
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 1 PID: 5694 Comm: kworker/1:5 Not tainted 5.1.0-rc3+ #8
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:786 [inline]
 register_lock_class+0x11ae/0x1240 kernel/locking/lockdep.c:1095
 __lock_acquire+0xfb/0x37c0 kernel/locking/lockdep.c:3582
 lock_acquire+0x100/0x2b0 kernel/locking/lockdep.c:4211
 __mutex_lock_common kernel/locking/mutex.c:925 [inline]
 __mutex_lock+0xf9/0x12b0 kernel/locking/mutex.c:1072
 ni6501_detach+0x56/0x110 drivers/staging/comedi/drivers/ni_usb6501.c:567
 comedi_device_detach+0xe8/0x800 drivers/staging/comedi/drivers.c:204
 comedi_device_cleanup.part.0+0x63/0x140 drivers/staging/comedi/comedi_fops.c:156
 comedi_device_cleanup drivers/staging/comedi/comedi_fops.c:187 [inline]
 comedi_free_board_dev.part.0+0x11/0x90 drivers/staging/comedi/comedi_fops.c:190
 comedi_free_board_dev drivers/staging/comedi/comedi_fops.c:189 [inline]
 comedi_release_hardware_device+0x10c/0x140 drivers/staging/comedi/comedi_fops.c:2880
 comedi_auto_config.cold+0x124/0x1b0 drivers/staging/comedi/drivers.c:1068
 usb_probe_interface+0x30d/0x7b0 drivers/usb/core/driver.c:361
 really_probe+0x296/0x680 drivers/base/dd.c:509
 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671
 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778
 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
 __device_attach+0x21e/0x360 drivers/base/dd.c:844
 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514
 device_add+0xaf4/0x1700 drivers/base/core.c:2106
 usb_set_configuration+0xdf2/0x1670 drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
 usb_probe_device+0xa8/0x110 drivers/usb/core/driver.c:266
 really_probe+0x296/0x680 drivers/base/dd.c:509
 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671
 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778
 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
 __device_attach+0x21e/0x360 drivers/base/dd.c:844
 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514
 device_add+0xaf4/0x1700 drivers/base/core.c:2106
 usb_new_device.cold+0x8b8/0x1030 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+0x1ac9/0x35a0 drivers/usb/core/hub.c:5432
 process_one_work+0x90a/0x1580 kernel/workqueue.c:2269
 process_scheduled_works kernel/workqueue.c:2331 [inline]
 worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417
 kthread+0x30e/0x420 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
dummy_hcd dummy_hcd.1: port status 0x00010101 has changes
usb 2-1: USB disconnect, device number 107
dummy_hcd dummy_hcd.1: port status 0x00100503 has changes
usb 2-1: new high-speed USB device number 108 using dummy_hcd
dummy_hcd dummy_hcd.1: port status 0x00100503 has changes
usb 2-1: config index 0 descriptor too short (expected 19474, got 18)
usb 2-1: config 184 has too many interfaces: 147, using maximum allowed: 32
usb 2-1: config 184 has 1 interface, different from the descriptor's value: 147
usb 2-1: config 184 has no interface number 0
usb 2-1: New USB device found, idVendor=3923, idProduct=718a, bcdDevice=1c.d6
usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 2-1: string descriptor 0 read error: -71
comedi comedi0: Wrong number of endpoints
ni6501 2-1:184.46: driver 'ni6501' failed to auto-configure device.
dummy_hcd dummy_hcd.1: port status 0x00010101 has changes
usb 2-1: USB disconnect, device number 108
dummy_hcd dummy_hcd.1: port status 0x00100503 has changes
usb 2-1: new high-speed USB device number 109 using dummy_hcd
dummy_hcd dummy_hcd.1: port status 0x00100503 has changes
usb 2-1: Using ep0 maxpacket: 32
usb 2-1: config 0 has an invalid interface number: 174 but max is 0
usb 2-1: config 0 has no interface number 0
usb 2-1: New USB device found, idVendor=0c72, idProduct=000d, bcdDevice=b8.cc
usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 2-1: config 0 descriptor??
peak_usb 2-1:0.174: PEAK-System PCAN-USB Pro hwrev 3481381574 serial ABD6C22E.DD8F1CD8 (2 channels)
peak_usb 2-1:0.174 can0: sending command failure: -22
peak_usb 2-1:0.174 can0: sending command failure: -22
peak_usb: probe of 2-1:0.174 failed with error -22
dummy_hcd dummy_hcd.5: port status 0x00010100 has changes
usb 6-1: USB disconnect, device number 91
option 6-1:0.0: device disconnected
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 92 using dummy_hcd
dummy_hcd dummy_hcd.5: port status 0x00100503 has changes
usb 6-1: New USB device found, idVendor=12d1, idProduct=1c1f, bcdDevice=6a.d8
usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 6-1: config 0 descriptor??
usb 6-1: bad CDC descriptors
usb 6-1: bad CDC descriptors
option 6-1:0.0: GSM modem (1-port) converter detected