BUG: memory leak
unreferenced object 0xffff88810fb56f00 (size 192):
  comm "kworker/0:2", pid 3831, jiffies 4294942325 (age 13.430s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 18 6f b5 0f 81 88 ff ff  .........o......
  backtrace:
    [<00000000890e1748>] kmalloc include/linux/slab.h:557 [inline]
    [<00000000890e1748>] usb_alloc_urb+0x66/0xe0 drivers/usb/core/urb.c:74
    [<000000002dae5637>] atusb_alloc_urbs drivers/net/ieee802154/atusb.c:362 [inline]
    [<000000002dae5637>] atusb_probe+0x158/0x820 drivers/net/ieee802154/atusb.c:1038
    [<00000000d60dd3eb>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
    [<00000000baa2d516>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<0000000004b4a5e4>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000b75ebd01>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844
    [<00000000460585b5>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
    [<000000001b50b59a>] __device_attach+0x122/0x250 drivers/base/dd.c:912
    [<000000006c075ed1>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
    [<000000001a88617d>] device_add+0x5ac/0xc30 drivers/base/core.c:2936
    [<00000000fed3e8a3>] usb_set_configuration+0x9de/0xb90 drivers/usb/core/message.c:2159
    [<000000001e481a79>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238
    [<000000001d8207cb>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293
    [<00000000baa2d516>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<0000000004b4a5e4>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000b75ebd01>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844