Re: stack overflow

William Lee Irwin III
2003-09-12T23:26:11Z

On Sad, 2003-09-13 at 00:06, William Lee Irwin III wrote:
>> 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.

On Sat, Sep 13, 2003 at 12:18:32AM +0100, Alan Cox wrote:
> We will fault and error on a user stack exceed. You need to use
> sigaltstack to catch it for obvious reasons. You can also use mmap and
> drop in red zones on user space stacks

Stack rlimits are fine and we already do those; the rest sounds like
something userspace has to do.

-- wli