BUG: memory leak
unreferenced object 0xffff8881232275c0 (size 64):
  comm "kworker/1:7", pid 5517, jiffies 4294942950 (age 13.830s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000e6dd75b0>] hcd_buffer_alloc+0x149/0x190
    [<00000000a12ab96d>] usb_alloc_coherent+0x40/0x70
    [<0000000033d99ac2>] mcba_usb_probe+0x258/0x510
    [<00000000b5bd2818>] usb_probe_interface+0x167/0x350
    [<000000000009c447>] really_probe+0x154/0x500
    [<00000000b7872b83>] driver_probe_device+0x8c/0x100
    [<00000000a7c52c9c>] __device_attach_driver+0xf3/0x130
    [<00000000a3573983>] bus_for_each_drv+0xb1/0xf0
    [<0000000067ac0b96>] __device_attach+0xed/0x250
    [<00000000db90a296>] bus_probe_device+0xc6/0xe0
    [<00000000c352d79e>] device_add+0x566/0xd90
    [<0000000041f0f79c>] usb_set_configuration+0x814/0xb50
    [<00000000241d08a5>] usb_generic_driver_probe+0x86/0xc0
    [<0000000046497914>] usb_probe_device+0x5c/0x150
    [<000000000009c447>] really_probe+0x154/0x500
    [<00000000b7872b83>] driver_probe_device+0x8c/0x100

BUG: memory leak
unreferenced object 0xffff888123227680 (size 64):
  comm "kworker/1:7", pid 5517, jiffies 4294942950 (age 13.830s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000e6dd75b0>] hcd_buffer_alloc+0x149/0x190
    [<00000000a12ab96d>] usb_alloc_coherent+0x40/0x70
    [<0000000033d99ac2>] mcba_usb_probe+0x258/0x510
    [<00000000b5bd2818>] usb_probe_interface+0x167/0x350
    [<000000000009c447>] really_probe+0x154/0x500
    [<00000000b7872b83>] driver_probe_device+0x8c/0x100
    [<00000000a7c52c9c>] __device_attach_driver+0xf3/0x130
    [<00000000a3573983>] bus_for_each_drv+0xb1/0xf0
    [<0000000067ac0b96>] __device_attach+0xed/0x250
    [<00000000db90a296>] bus_probe_device+0xc6/0xe0
    [<00000000c352d79e>] device_add+0x566/0xd90
    [<0000000041f0f79c>] usb_set_configuration+0x814/0xb50
    [<00000000241d08a5>] usb_generic_driver_probe+0x86/0xc0
    [<0000000046497914>] usb_probe_device+0x5c/0x150
    [<000000000009c447>] really_probe+0x154/0x500
    [<00000000b7872b83>] driver_probe_device+0x8c/0x100

BUG: memory leak
unreferenced object 0xffff8881232279c0 (size 64):
  comm "kworker/1:7", pid 5517, jiffies 4294942950 (age 13.830s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000e6dd75b0>] hcd_buffer_alloc+0x149/0x190
    [<00000000a12ab96d>] usb_alloc_coherent+0x40/0x70
    [<0000000033d99ac2>] mcba_usb_probe+0x258/0x510
    [<00000000b5bd2818>] usb_probe_interface+0x167/0x350
    [<000000000009c447>] really_probe+0x154/0x500
    [<00000000b7872b83>] driver_probe_device+0x8c/0x100
    [<00000000a7c52c9c>] __device_attach_driver+0xf3/0x130
    [<00000000a3573983>] bus_for_each_drv+0xb1/0xf0
    [<0000000067ac0b96>] __device_attach+0xed/0x250
    [<00000000db90a296>] bus_probe_device+0xc6/0xe0
    [<00000000c352d79e>] device_add+0x566/0xd90
    [<0000000041f0f79c>] usb_set_configuration+0x814/0xb50
    [<00000000241d08a5>] usb_generic_driver_probe+0x86/0xc0
    [<0000000046497914>] usb_probe_device+0x5c/0x150
    [<000000000009c447>] really_probe+0x154/0x500
    [<00000000b7872b83>] driver_probe_device+0x8c/0x100

