Description of problem:

$ touch test.c
$ gcc -S test.c
$ cat test.s

On != aarch64, gcc emits a GNU_STACK directive:

	.section	.note.GNU-stack,"",@progbits

On aarch64, this is missing, so all of our binaries probably
run with an executable stack.

Version-Release number of selected component (if applicable):

gcc-4.9.0-14.fc21.aarch64

How reproducible:

100%

Steps to Reproduce:
1. See above.