Library address randomization

[Ricardo Rolim]

Hi there,

Apparently I'm not getting library address randomization for any
programs (compiled or not as PIE). Whereas the binary itself, stack
and heap are randomly getting their addresses changed from one
execution to the next, the library stands still at a predictable
location. Strangely enough I've got the expected results out of Ubuntu
8.10. Here's one example:

[ricardo@localhost ~]$ cat /proc/sys/kernel/randomize_va_space
2
[ricardo@localhost ~]$ cat /proc/sys/kernel/exec-shield
1
[ricardo@localhost ~]$ echo 'int main(){}' > dummy.c
[ricardo@localhost ~]$ gcc -fpie -pie -o dummy dummy.c
[ricardo@localhost ~]$ ldd dummy
	linux-gate.so.1 =>  (0x00130000)
	libc.so.6 => /lib/libc.so.6 (0x00133000)
	/lib/ld-linux.so.2 (0x00110000)
[ricardo@localhost ~]$ ldd dummy
	linux-gate.so.1 =>  (0x00130000)
	libc.so.6 => /lib/libc.so.6 (0x00133000)
	/lib/ld-linux.so.2 (0x00110000)

Am I missing something? This is the third mailing list that I'm
trying. Thanks a lot :)