Index: wp-includes/canonical.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- wp-includes/canonical.php	(revision 24433)
+++ wp-includes/canonical.php	(revision )
@@ -214,7 +214,14 @@
 		if ( is_singular() && ! is_front_page() && get_query_var('page') ) {
 			if ( !$redirect_url )
 				$redirect_url = get_permalink( get_queried_object_id() );
+
+			$post = get_post( get_queried_object_id() );
+			$pagination = wp_parse_post_content( $post );
+			if ( get_query_var( 'page' ) <= $pagination['numpages'] ) {
-			$redirect_url = trailingslashit( $redirect_url ) . user_trailingslashit( get_query_var( 'page' ), 'single_paged' );
+				$redirect_url = trailingslashit( $redirect_url ) . user_trailingslashit( get_query_var( 'page' ), 'single_paged' );
+			} else {
+				$redirect_url = trailingslashit( $redirect_url );
+			}
 			$redirect['query'] = remove_query_arg( 'page', $redirect['query'] );
 		}