On Wed, 20 Aug 1997 03:00:10 -0400 (EDT) 
 Carl S Shapiro <cshapiro@sparky.ic.sunysb.edu> wrote:

 > Is there any way to prevent the stack from being executable?

"On what architecture?"  On many (most), it's not possible to do this, since
"execute" permission is implied by "read".  The Alpha has a Fault On Execute
PTE bit, and I think it's possible to FOE on the SRMMU and maybe the i386
if you play with the segment foo, but it's certainly not a universal thing.

Jason R. Thorpe                                       thorpej@nas.nasa.gov
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