--- sys/nfs/nfs_socket.c	26 Mar 2003 01:44:46 -0000	1.60.2.6
+++ sys/nfs/nfs_socket.c	26 Feb 2006 19:00:39 -0000
@@ -2189,7 +2189,7 @@
 			slp->ns_flag |= SLP_LASTFRAG;
 		else
 			slp->ns_flag &= ~SLP_LASTFRAG;
-		if (slp->ns_reclen > NFS_MAXPACKET) {
+		if (slp->ns_reclen > NFS_MAXPACKET || slp->ns_reclen <= 0) {
 			slp->ns_flag &= ~SLP_GETSTREAM;
 			return (EPERM);
 		}