From: Or Gerlitz <redacted>
Date: Sat, 1 Dec 2012 17:50:09 +0200

On Sat, Dec 1, 2012 at 1:58 AM, Ben Hutchings [off-list ref] wrote:

quoted

The values of max_tx and max_rx are passed in from userland, so you
can't trust them.

Is this a general statement re ethtool values passed from user space
or something specific here? can't one assume that the ethtool process
runs under the appropriate admin permission?

He's saying that you need to carefully validate the arguments, not
that appropriate permissions haven't been checked.