diff -urN oldtree/lib/vsprintf.c newtree.new/lib/vsprintf.c
--- oldtree/lib/vsprintf.c	2006-06-27 12:28:59.000000000 +0000
+++ newtree.new/lib/vsprintf.c	2006-06-28 12:06:17.000000000 +0000
@@ -259,7 +259,9 @@
 	int len;
 	unsigned long long num;
 	int i, base;
-	char *str, *end, c;
+        char *str;              /* Where we're writing to */
+        char *end;              /* The last byte we can write to */
+        char c;
 	const char *s;
 
 	int flags;		/* flags to number() */
@@ -283,12 +285,12 @@
 	}
 
 	str = buf;
-	end = buf + size;
+	end = buf + size - 1;
 
 	/* Make sure end is always >= buf */
-	if (end < buf) {
+	if (end < buf - 1) {
 		end = ((void *)-1);
-		size = end - buf;
+		size = end - buf + 1;
 	}
 
 	for (; *fmt ; ++fmt) {
@@ -494,7 +496,6 @@
 	/* the trailing null byte doesn't count towards the total */
 	return str-buf;
 }
-
 EXPORT_SYMBOL(vsnprintf);
 
 /**