BUG: memory leak
unreferenced object 0xffff8881100b3040 (size 32):
  comm "kworker/1:2", pid 2042, jiffies 4294942108 (age 8.160s)
  hex dump (first 32 bytes):
    40 58 d0 10 81 88 ff ff 00 00 00 00 00 00 00 00  @X..............
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000d17ea19d>] kmalloc_node include/linux/slab.h:577 [inline]
    [<00000000d17ea19d>] kvmalloc_node+0x61/0xf0 mm/util.c:587
    [<0000000053f89b4a>] kvmalloc include/linux/mm.h:785 [inline]
    [<0000000053f89b4a>] kvmalloc_array include/linux/mm.h:803 [inline]
    [<0000000053f89b4a>] v4l2_ctrl_handler_init_class+0x86/0xb0 drivers/media/v4l2-core/v4l2-ctrls.c:2525
    [<00000000974e35c3>] zr364xx_probe+0x110/0x851 drivers/media/usb/zr364xx/zr364xx.c:1427
    [<00000000fc337d67>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
    [<000000009fb0ffcf>] really_probe+0x159/0x4a0 drivers/base/dd.c:554
    [<00000000e813fe99>] driver_probe_device+0x84/0x100 drivers/base/dd.c:740
    [<00000000ae04075f>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:846
    [<0000000027796950>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
    [<0000000084609e6c>] __device_attach+0x122/0x250 drivers/base/dd.c:914
    [<000000007afc66f8>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
    [<000000008cd03a03>] device_add+0x5be/0xc30 drivers/base/core.c:3115
    [<00000000cb028a5f>] usb_set_configuration+0x9d9/0xb90 drivers/usb/core/message.c:2164
    [<00000000b463fa29>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238
    [<00000000f0e9b80f>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293
    [<000000009fb0ffcf>] really_probe+0x159/0x4a0 drivers/base/dd.c:554
    [<00000000e813fe99>] driver_probe_device+0x84/0x100 drivers/base/dd.c:740