Chris Brannon <chris at the-brannons.com> wrote: > 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! In other words, you're passing it the address of the pointer to the buffer, rather than the pointer itself, which holds the address of the buffer.
