diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 27f961aa271489d2e512f95d3f4b972d99ad43eb..b05f4907d9a4cb4723064ff38cceecc38ed2265f 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5407,8 +5407,8 @@ static int raid5_read_one_chunk(struct mddev *mddev, struct bio *raid_bio)
 	}
 
 	sector = raid5_compute_sector(conf, raid_bio->bi_iter.bi_sector, 0,
-			&dd_idx, NULL);
-	end_sector = bio_end_sector(raid_bio);
+				      &dd_idx, NULL);
+	end_sector = sector + bio_sectors(raid_bio);
 
 	rcu_read_lock();
 	if (r5c_big_stripe_cached(conf, sector))