Re: [CHECKER] large stack variables (>=1K) in 2.4.4 and 2.4.4-ac8

Andi Kleen
2001-05-25T11:54:33Z

On Fri, May 25, 2001 at 07:52:02AM -0400, Brian Gerst wrote:
> Actually, you will never get a stack fault exception, since with a flat
> stack segment you can never get a limit violation. All you will do is
> corrupt the data in task struct and cause an oops later on when the
> kernel tries to use the task struct. There are only two ways to
> properly trap a kernel stack overflow:

In my experience the stack pointer eventually gets corrupted and starts
pointing to some unmapped area, which gives you a stack fault (admittedly
a backtrace is a bit hard after that)

-Andi