[PATCH 2/2][BZ #12416] Use stack boundaries from /proc/PID/maps to make stack executable

[Siddhesh Poyarekar]

On Mon, 11 Jun 2012 18:43:17 -0400, KOSAKI wrote:
> 
> If my parsing is correct,  following adjustment only works when
> previous vma is enough near.
> 
> >                      /* The limit might be too high.  */
> >                      if ((size_t) iattr->stacksize
> >                          > (size_t) iattr->stackaddr - last_to)
> >                        iattr->stacksize = (size_t) iattr->stackaddr
> > - last_to;
> 
> Am I missing something?
> 

No you're right, I missed that point. I'll post a patch once I figure
out a reproducer, because I'd like to capture it in a test case.

Thanks,
Siddhesh