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From: chakaram@auth.gr
Newsgroups: comp.compilers
Subject: Re: Executing from dynamically allocated memory
Date: Sat, 12 Oct 2013 19:20:45 +0300
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Xref: csiph.com comp.compilers:990

As our moderator pointed out, sounds like NX. Use mmap() with
PROT_READ|PROT_WRITE|PROT_EXEC or just PROT_WRITE and then mprotect()
your region to PROT_READ|PROT_EXEC.

If you're on an i386, then it's probably some kernel hardening patch
that makes the heap non executable.
./ck
--
Chariton Karamitas
Electrical and Computer Engineering Department
Fuculty of Engineering
Aristotle University of Thessaloniki, Greece