BUG: memory leak
unreferenced object 0xffff88810163a600 (size 96):
  comm "kworker/1:2", pid 2038, jiffies 4294943314 (age 8.920s)
  hex dump (first 32 bytes):
    00 89 88 0c 81 88 ff ff 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:
    [<00000000b97b4b53>] kmalloc include/linux/slab.h:552 [inline]
    [<00000000b97b4b53>] kzalloc include/linux/slab.h:682 [inline]
    [<00000000b97b4b53>] pcan_usb_pro_init+0x120/0x280 drivers/net/can/usb/peak_usb/pcan_usb_pro.c:856
    [<0000000083d9f299>] peak_usb_create_dev drivers/net/can/usb/peak_usb/pcan_usb_core.c:851 [inline]
    [<0000000083d9f299>] peak_usb_probe+0x389/0x490 drivers/net/can/usb/peak_usb/pcan_usb_core.c:949
    [<00000000ac926402>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
    [<000000008f3b956b>] really_probe+0x159/0x4a0 drivers/base/dd.c:554
    [<00000000ebbe0876>] driver_probe_device+0x84/0x100 drivers/base/dd.c:740
    [<00000000ee4799fc>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:846
    [<000000002ee84ed3>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
    [<000000005d101344>] __device_attach+0x122/0x250 drivers/base/dd.c:914
    [<0000000010d4f094>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
    [<00000000252da6aa>] device_add+0x5be/0xc30 drivers/base/core.c:3109
    [<00000000eb63bb0a>] usb_set_configuration+0x9d9/0xb90 drivers/usb/core/message.c:2164
    [<000000007df18e8d>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238
    [<000000007a55ca1d>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293
    [<000000008f3b956b>] really_probe+0x159/0x4a0 drivers/base/dd.c:554
    [<00000000ebbe0876>] driver_probe_device+0x84/0x100 drivers/base/dd.c:740
    [<00000000ee4799fc>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:846