On Mon, Mar 29, 2010 at 11:04 AM, Dr. David Kirkby
<david.kir...@onetel.net> wrote:
> When I try the same program on sage.math, it dumps core there too. So I
> don't know if sage.math has protection of the stack enabled. If it does,
> then it is strange that SELinux has problems, whereas sage.math does not.
The stack is not executable by default (on NX hardware, I assume).
You can make your program work by adding something like this:
mprotect((void*)((long)&a & ~0xfff), 0x1000,
PROT_READ|PROT_WRITE|PROT_EXEC);
before the call to fnptr(), which will make the page where a lives executable.
I don't think SELinux is installed on sage.math.
Gonzalo
--
To post to this group, send an email to sage-devel@googlegroups.com
To unsubscribe from this group, send an email to
sage-devel+unsubscr...@googlegroups.com
For more options, visit this group at http://groups.google.com/group/sage-devel
URL: http://www.sagemath.org
To unsubscribe from this group, send email to
sage-devel+unsubscribegooglegroups.com or reply to this email with the words
"REMOVE ME" as the subject.
