--- raid0.c.orig	2006-10-30 00:12:22.000000000 +0100
+++ raid0.c	2006-10-30 00:14:48.000000000 +0100
@@ -415,6 +415,10 @@
 	chunksize_bits = ffz(~chunk_size);
 	block = bio->bi_sector >> 1;
 	
+	if (block >= mddev->array_size) {
+		bio_endio(bio, bio->bi_size, -EIO);
+		return 0;
+	}
 
 	if (unlikely(chunk_sects < (bio->bi_sector & (chunk_sects - 1)) + (bio->bi_size >> 9))) {
 		struct bio_pair *bp;