PHP-FPM status page is blank after nginx update from 1.2.1 to 1.9.2

Try this:

location ~ ^/(php_status|ping)$ {
    # access_log off;
    allow 127.0.0.1;
    allow MY_IP_ADRESS;
    deny all;
    include fastcgi_params;

    # This is important
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;

    fastcgi_pass    unix:/var/run/php5-fpm.sock;
}

Seems it's enough to add only

fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;