usb 6-1: config 0 descriptor??
usb 6-1: Waiting for MOTU Microbook II to boot up...
------------[ cut here ]------------
usb 6-1: BOGUS urb xfer, pipe 1 != type 3
WARNING: CPU: 0 PID: 13551 at drivers/usb/core/urb.c:477 usb_submit_urb+0x119a/0x13c0
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 13551 Comm: kworker/0:1 Not tainted 5.1.0-rc3+ #7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
 dump_stack+0xca/0x13e
 panic+0x292/0x5e1
 __warn.cold+0x20/0x53
 report_bug+0x262/0x2a0
 do_error_trap+0x12b/0x1e0
 do_invalid_op+0x32/0x40
 invalid_op+0x14/0x20
RIP: 0010:usb_submit_urb+0x119a/0x13c0
Code: e7 fd 48 8b 04 24 48 8d b8 a0 00 00 00 e8 6e 60 11 ff 41 89 d8 44 89 e1 4c 89 ea 48 89 c6 48 c7 c7 20 0e 17 86 e8 51 80 bd fd <0f> 0b e9 14 f4 ff ff e8 aa 71 e7 fd 49 8d be b0 00 00 00 48 b8 00
RSP: 0018:ffff8881c9f26dc8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff8127bbcd RDI: ffffed10393e4dab
RBP: ffff8881d2a3c580 R08: ffff8881d3bc0000 R09: ffffed103b644d30
R10: ffffed103b644d2f R11: ffff8881db22697f R12: 0000000000000001
R13: ffff8881b3413d80 R14: ffff8881cd1dd500 R15: ffff8881d1d47c00
 usb_start_wait_urb+0x108/0x2b0
 usb_bulk_msg+0x228/0x550
 snd_usb_motu_microbookii_communicate.constprop.0+0xe3/0x240
 snd_usb_apply_boot_quirk.cold+0x140/0x36b
 usb_audio_probe+0x2f1/0x1f60
 usb_probe_interface+0x30d/0x7b0
 really_probe+0x296/0x680
 driver_probe_device+0xf9/0x200
 __device_attach_driver+0x1c4/0x230
 bus_for_each_drv+0x15e/0x1e0
 __device_attach+0x21e/0x360
 bus_probe_device+0x1ec/0x2a0
 device_add+0xaf4/0x1700
 usb_set_configuration+0xdf2/0x1670
 generic_probe+0x9d/0xd5
 usb_probe_device+0xa8/0x110
 really_probe+0x296/0x680
 driver_probe_device+0xf9/0x200
 __device_attach_driver+0x1c4/0x230
 bus_for_each_drv+0x15e/0x1e0
 __device_attach+0x21e/0x360
 bus_probe_device+0x1ec/0x2a0
 device_add+0xaf4/0x1700
 usb_new_device.cold+0x8b8/0x1030
 hub_event+0x1ac9/0x35a0
 process_one_work+0x90a/0x1580
 worker_thread+0x7ab/0xe20
 kthread+0x30e/0x420
 ret_from_fork+0x3a/0x50
Kernel Offset: disabled
Rebooting in 86400 seconds..