diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 679b797..fbce4b0 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -887,10 +887,11 @@
 	i += len;
 
 	if (debug) {
-		char tb[count + 1];
-		if (copy_from_user(tb, user_buffer, count))
+		size_t copy = min(count, 1023);
+		char tb[copy + 1];
+		if (copy_from_user(tb, user_buffer, copy))
 			return -EFAULT;
-		tb[count] = 0;
+		tb[copy] = 0;
 		printk(KERN_DEBUG "pktgen: %s,%lu  buffer -:%s:-\n", name,
 		       (unsigned long)count, tb);
 	}