diff --git a/drivers/md/md.c b/drivers/md/md.c
index 8f16174..67bb0d0 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1081,7 +1081,7 @@
 		mddev->size = le64_to_cpu(sb->size)/2;
 		mddev->events = le64_to_cpu(sb->events);
 		mddev->bitmap_offset = 0;
-		mddev->default_bitmap_offset = 1024;
+		mddev->default_bitmap_offset = 1024 >> 9;
 		
 		mddev->recovery_cp = le64_to_cpu(sb->resync_offset);
 		memcpy(mddev->uuid, sb->set_uuid, 16);
@@ -1162,7 +1162,7 @@
 	sb->cnt_corrected_read = atomic_read(&rdev->corrected_errors);
 
 	sb->raid_disks = cpu_to_le32(mddev->raid_disks);
-	sb->size = cpu_to_le64(mddev->size);
+	sb->size = cpu_to_le64(mddev->size<<1);
 
 	if (mddev->bitmap && mddev->bitmap_file == NULL) {
 		sb->bitmap_offset = cpu_to_le32((__u32)mddev->bitmap_offset);
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index d03f99c..678f4db 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -372,7 +372,7 @@
 	kfree(conf);
 	mddev->private = NULL;
 out:
-	return 1;
+	return -ENOMEM;
 }
 
 static int raid0_stop (mddev_t *mddev)
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 9130d05..ab90a6d 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -565,6 +565,8 @@
 
 	if (disk >= 0 && (rdev=rcu_dereference(conf->mirrors[disk].rdev))!= NULL)
 		atomic_inc(&conf->mirrors[disk].rdev->nr_pending);
+	else
+		disk = -1;
 	rcu_read_unlock();
 
 	return disk;
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 25976bf..2dba305 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -350,7 +350,8 @@
 	while (drop_one_stripe(conf))
 		;
 
-	kmem_cache_destroy(conf->slab_cache);
+	if (conf->slab_cache)
+		kmem_cache_destroy(conf->slab_cache);
 	conf->slab_cache = NULL;
 }
 
diff --git a/drivers/md/raid6main.c b/drivers/md/raid6main.c
index ed2abb2..cd477eb 100644
--- a/drivers/md/raid6main.c
+++ b/drivers/md/raid6main.c
@@ -366,7 +366,8 @@
 	while (drop_one_stripe(conf))
 		;
 
-	kmem_cache_destroy(conf->slab_cache);
+	if (conf->slab_cache)
+		kmem_cache_destroy(conf->slab_cache);
 	conf->slab_cache = NULL;
 }