diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 1efd958..546b8d7 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -398,6 +398,8 @@
 	struct ext3_super_block *es = sbi->s_es;
 	int i, err;
 
+	lock_kernel();
+
 	ext3_xattr_put_super(sb);
 	err = journal_destroy(sbi->s_journal);
 	sbi->s_journal = NULL;
@@ -446,7 +448,8 @@
 	sb->s_fs_info = NULL;
 	kfree(sbi->s_blockgroup_lock);
 	kfree(sbi);
-	return;
+
+	unlock_kernel();
 }
 
 static struct kmem_cache *ext3_inode_cachep;