nginx + php-fpm = белая страница

server {
listen          80;
server_name     domain.com;

index index.html;
root /home/www/domain.com;
location / {
        try_files $uri $uri/ =404;
    }

    error_page 404 /404.html;
    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
        root /usr/share/nginx/html;
    }

    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/var/run/php5-fpm.sock;
        fastcgi_index index.php;
        include fastcgi_params;
    }

}

srw-rw-rw- 1 www-data www-data 0 Oct 25 01:47 /var/run/php5-fpm.sock

cat /home/www/domain.com/file.php
<?php
echo "zzzz";
?>