Re: Kernel Oops with: ip link set can0 type can

[ajneu <ajneu1@gmail.com>]

ajneu <ajneu1 <at> gmail.com> writes:

> 
> Hi,
> 
> issuing the command
>    sudo ip link set can0 type can
> I get Kernel Oops (NULL pointer dereference)
> Command line prints: "Killed".
> 
> [...]
>
> dmesg shows
> [...]


Question: 
How should one add and set a can device???


If I reboot, then
udev detects my Peak USB Adapter.

Command:
   ip link show can0
=>
  4: can0: <NOARP,ECHO> mtu 16 qdisc noop state DOWN mode DEFAULT group
default qlen 10
      link/can

This device was (somehow?) loaded via udev.
Command:
   udevadm info -p /sys/class/net/can0
   udevadm info -p /sys/class/net/can0 --attribute-walk


Now let's delete can0:
   sudo ip link delete can0
   ip link show can0
=>
   Device "can0" does not exist.

Now let's add can0 as type can:
   sudo ip link add can0 type can
=>
Killed

Damn!!!! Kernel Oops!!!!!!
(dmesg shows a similar output as before.)


So repeating question:
How should one add and set a can device???

How does udev do it? (How can one figure out how udev does it?)

Thanks.