KAMEZAWA Hiroyuki wrote::
On Thu, 04 Oct 2007 20:56:14 +0900
Shi Weihua <[email protected]> wrote:
stack.ss_sp = addr + pagesize;
stack.ss_flags = 0;
stack.ss_size = pagesize;
Here is bad.
stack,ss_sp = addr;
stack.ss_flags = 0;
stack.ss_size = pagesize * 2;
[What the test code want to do]
addr+pagesize*2 - addr+pagesize -> sigaltstack
addr+pagesize - addr -> protected region
The code want to catch overflow when esp enter the protected region.
But it failed ...
cheers.
-Kame
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