diff --git a/init/do_mounts.c b/init/do_mounts.c
index 9634ecf3743d..871dbc3e9cb5 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -386,9 +386,21 @@ static void __init get_fs_names(char *page)
 static int __init do_mount_root(char *name, char *fs, int flags, void *data)
 {
 	struct super_block *s;
-	int err = ksys_mount(name, "/root", fs, flags, data);
-	if (err)
-		return err;
+	char *data_page;
+	struct page *p;
+	int ret;
+
+	/* do_mount() requires a full page as fifth argument */
+	p = alloc_page(GFP_KERNEL);
+	if (!p)
+		return -ENOMEM;
+
+	data_page = page_address(p);
+	strscpy(data_page, data, PAGE_SIZE - 1);
+
+	ret = ksys_mount(name, "/root", fs, flags, data_page);
+	if (ret)
+		goto out;
 
 	ksys_chdir("/root");
 	s = current->fs->pwd.dentry->d_sb;
@@ -398,7 +410,10 @@ static int __init do_mount_root(char *name, char *fs, int flags, void *data)
 	       s->s_type->name,
 	       sb_rdonly(s) ? " readonly" : "",
 	       MAJOR(ROOT_DEV), MINOR(ROOT_DEV));
-	return 0;
+
+out:
+	put_page(p);
+	return ret;
 }
 
 void __init mount_block_root(char *name, int flags)