Re: stack overflow

[William Lee Irwin III]

On Fri, Sep 12, 2003 at 04:50:47PM -0600, Andreas Dilger wrote:
> Well, with the exception of the fact that STACK_LIMIT is 8MB, and kernel
> stacks are only 8kB (on i386)...
> Also, see "do_IRQ()" (i386) for CONFIG_DEBUG_STACKOVERFLOW to see this already.

What he actually wants is in-kernel user stack overflow checking, which
is basically impossible since user stacks are demand paged. He's been
told this before and failed to absorb it.

There have been attempts to use i386 segmentation for stack limit
checks written but they should probably not be confused with this.


-- wli
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/