BUG: memory leak
unreferenced object 0xffff88811008ca00 (size 128):
  comm "kworker/0:1", pid 7, jiffies 4294942573 (age 15.680s)
  hex dump (first 32 bytes):
    00 89 55 0c 81 88 ff ff 00 00 00 00 00 00 00 00  ..U.............
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000c17cd0ed>] kmalloc include/linux/slab.h:552 [inline]
    [<00000000c17cd0ed>] kzalloc include/linux/slab.h:682 [inline]
    [<00000000c17cd0ed>] pcan_usb_fd_init+0x156/0x210 drivers/net/can/usb/peak_usb/pcan_usb_fd.c:868
    [<000000000239bfa1>] peak_usb_create_dev drivers/net/can/usb/peak_usb/pcan_usb_core.c:851 [inline]
    [<000000000239bfa1>] peak_usb_probe+0x389/0x490 drivers/net/can/usb/peak_usb/pcan_usb_core.c:949
    [<000000003a861526>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
    [<00000000c41fa61f>] really_probe+0x159/0x480 drivers/base/dd.c:561
    [<000000009985ee64>] driver_probe_device+0x84/0x100 drivers/base/dd.c:745
    [<000000003f3a0d3b>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:851
    [<00000000e710e1ef>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
    [<00000000030fb069>] __device_attach+0x122/0x250 drivers/base/dd.c:919
    [<00000000653e9caa>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
    [<00000000b6b10757>] device_add+0x5be/0xc30 drivers/base/core.c:3091
    [<00000000d71a5d8c>] usb_set_configuration+0x9d9/0xb90 drivers/usb/core/message.c:2164
    [<00000000bdca6967>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238
    [<00000000254b62d4>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293
    [<00000000c41fa61f>] really_probe+0x159/0x480 drivers/base/dd.c:561
    [<000000009985ee64>] driver_probe_device+0x84/0x100 drivers/base/dd.c:745
    [<000000003f3a0d3b>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:851