Overview
Code from OSTEP chapter Introduction.
To compile, just type:
prompt> make
See the highly primitive Makefile
for details.
Then, run them! Examples:
prompt> ./cpu A
prompt> ./mem 1
prompt> ./threads 10000
prompt> ./io
Details
One issue with mem.c is that address space randomization is usually on by
default. To turn it off:
macOS
From stackoverflow
Just compile/link as follows:
gcc -o mem mem.c -Wall -Wl,-no_pie
Linux
From Giovanni Lagorio:
Under Linux you can disable ASLR, without using a debugger, in (at least) two ways:
- Use the command setarch to run a process with ASLR disabled; I typically run
bash, with which I can execute examples, like this:
setarch $(uname --machine) --addr-no-randomize /bin/bash
- Writing 0 into
/proc/sys/kernel/randomize_va_space
; you need to be
root to do this and this change has (a non-permanent) effect on the
whole system, which is something you probably don't want. I use this
one only inside VMs.