diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 594d1f6b4789e7e864ae131987ebc078ed0bad23..ab54f99b7c3b27cfd40a023bae56f9e0ed0b0f18 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -931,6 +931,10 @@ static int __origin_write(struct list_head *snapshots, struct bio *bio)
 		if (!snap->valid)
 			continue;
 
+		/* Nothing to do if writing beyond end of snapshot */
+		if (bio->bi_sector >= dm_table_get_size(snap->table))
+			continue;
+
 		down_write(&snap->lock);
 
 		/*
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 18e9b9953fcd32489a208b273927616da7dd4627..a5a4c0ed8a143fb274d13dd3d9e56500d6fac098 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -943,6 +943,7 @@ EXPORT_SYMBOL(dm_vcalloc);
 EXPORT_SYMBOL(dm_get_device);
 EXPORT_SYMBOL(dm_put_device);
 EXPORT_SYMBOL(dm_table_event);
+EXPORT_SYMBOL(dm_table_get_size);
 EXPORT_SYMBOL(dm_table_get_mode);
 EXPORT_SYMBOL(dm_table_put);
 EXPORT_SYMBOL(dm_table_get);