BUG: memory leak
unreferenced object 0xffff888110a08380 (size 96):
  comm "kworker/1:2", pid 3677, jiffies 4294942011 (age 8.710s)
  hex dump (first 32 bytes):
    40 09 09 13 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:
    [<0000000007a399dc>] kmalloc include/linux/slab.h:552 [inline]
    [<0000000007a399dc>] kzalloc include/linux/slab.h:664 [inline]
    [<0000000007a399dc>] pcan_usb_pro_init+0x120/0x280 drivers/net/can/usb/peak_usb/pcan_usb_pro.c:856
    [<00000000cd900180>] peak_usb_create_dev drivers/net/can/usb/peak_usb/pcan_usb_core.c:850 [inline]
    [<00000000cd900180>] peak_usb_probe+0x389/0x490 drivers/net/can/usb/peak_usb/pcan_usb_core.c:948
    [<000000004f4e6483>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
    [<000000007b40559c>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<0000000089498c54>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000dd0d5945>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844
    [<00000000a4aa4193>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
    [<0000000091f18252>] __device_attach+0x122/0x250 drivers/base/dd.c:912
    [<000000002049b3fa>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
    [<00000000962d2cbc>] device_add+0x5ac/0xc30 drivers/base/core.c:2936
    [<0000000005944ef1>] usb_set_configuration+0x9de/0xb90 drivers/usb/core/message.c:2159
    [<00000000fff4ae59>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238
    [<0000000008fe7d3f>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293
    [<000000007b40559c>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<0000000089498c54>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000dd0d5945>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844