wp_insert_post() break page

Hi,
when i add function “wp_insert_post()” – break page.
In database “$pages” array insert many times the same data… stop only when break pages.
Why?

Thanks ;]

add_action('save_post', 'save_data_all');

function save_data_all($post_id)
{
	$pages = array(
		'post_title' => 'title',
		'post_content' => 'This is my post.',
		'post_status' => 'publish',
		'post_type' => 'page'
	);

	wp_insert_post($pages);

	if(get_post_meta($post_id, 'l_news', true))
		update_post_meta($post_id, 'l_news', $ser);
	else
		add_post_meta($post_id, 'l_news', $ser, false);	

}