BUG: memory leak
unreferenced object 0xffff88810f233600 (size 512):
  comm "kworker/0:2", pid 3640, jiffies 4294943493 (age 30.380s)
  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:
    [<00000000ce9e8176>] kmalloc_array include/linux/slab.h:592 [inline]
    [<00000000ce9e8176>] __kfifo_alloc+0xad/0x100 lib/kfifo.c:43
    [<0000000081a3bcd3>] wacom_probe+0x1a1/0x3b0 drivers/hid/wacom_sys.c:2727
    [<00000000e441b47e>] hid_device_probe+0x16b/0x210 drivers/hid/hid-core.c:2281
    [<00000000dcd706b0>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<000000009d89140e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000aeb6ed9e>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844
    [<00000000c5a0558f>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
    [<00000000de26a16c>] __device_attach+0x122/0x250 drivers/base/dd.c:912
    [<000000000ca77180>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
    [<00000000288640c8>] device_add+0x5ac/0xc30 drivers/base/core.c:2936
    [<0000000077ef4899>] hid_add_device+0x151/0x390 drivers/hid/hid-core.c:2437
    [<00000000378de49d>] usbhid_probe+0x412/0x560 drivers/hid/usbhid/hid-core.c:1407
    [<00000000bc01b317>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
    [<00000000dcd706b0>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<000000009d89140e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000aeb6ed9e>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844

BUG: memory leak
unreferenced object 0xffff88810cd9a400 (size 512):
  comm "kworker/0:2", pid 3640, jiffies 4294945714 (age 8.170s)
  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:
    [<00000000ce9e8176>] kmalloc_array include/linux/slab.h:592 [inline]
    [<00000000ce9e8176>] __kfifo_alloc+0xad/0x100 lib/kfifo.c:43
    [<0000000081a3bcd3>] wacom_probe+0x1a1/0x3b0 drivers/hid/wacom_sys.c:2727
    [<00000000e441b47e>] hid_device_probe+0x16b/0x210 drivers/hid/hid-core.c:2281
    [<00000000dcd706b0>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<000000009d89140e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000aeb6ed9e>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844
    [<00000000c5a0558f>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
    [<00000000de26a16c>] __device_attach+0x122/0x250 drivers/base/dd.c:912
    [<000000000ca77180>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
    [<00000000288640c8>] device_add+0x5ac/0xc30 drivers/base/core.c:2936
    [<0000000077ef4899>] hid_add_device+0x151/0x390 drivers/hid/hid-core.c:2437
    [<00000000378de49d>] usbhid_probe+0x412/0x560 drivers/hid/usbhid/hid-core.c:1407
    [<00000000bc01b317>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
    [<00000000dcd706b0>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<000000009d89140e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000aeb6ed9e>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844