With this patch,
root@c-saucy-0:~# sysctl -e kernel.yama.ptrace_scope=1 sysctl: permission denied on key 'kernel.yama.ptrace_scope' root@c-saucy-0:~# echo $? 0
Without it, error code is 1.
With this patch,
root@c-saucy-0:~# sysctl -e kernel. yama.ptrace_ scope=1 yama.ptrace_ scope'
sysctl: permission denied on key 'kernel.
root@c-saucy-0:~# echo $?
0
Without it, error code is 1.