OT: kernel oops

[Chris Brannon]

Don Raikes <don.raikes at oracle.com> writes:

> The section of code that is having problems looks like this:
*SNIP*
> if (copy_from_user(&tbuf, buf, count))

This line is your problem.  You are passing a
pointer-to-pointer-to-character (char **) as the first argument to
copy_from_user, but you should be passing char * instead.  So ditch the
ampersand, and all will be right with the world!
I could give you a thorough explanation of why this is failing, if you
like, but to make a long story short, this line of code is smashing the
stack!

I'm always happy to help.
-- Chris