5 files changed, 11 insertions, 6 deletions
diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
index b2c78621da44..4388004a319d 100644
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@ -619,7 +619,6 @@ static int ovl_link_up(struct ovl_copy_up_ctx *c)
 	err = PTR_ERR(upper);
 	if (!IS_ERR(upper)) {
 		err = ovl_do_link(ofs, ovl_dentry_upper(c->dentry), udir, upper);
-		dput(upper);
 
 		if (!err) {
 			/* Restore timestamps on parent (best effort) */
@@ -627,6 +626,7 @@ static int ovl_link_up(struct ovl_copy_up_ctx *c)
 			ovl_dentry_set_upper_alias(c->dentry);
 			ovl_dentry_update_reval(c->dentry, upper);
 		}
+		dput(upper);
 	}
 	inode_unlock(udir);
 	if (err)
diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c
index 4444c78e2e0c..94095058da34 100644
--- a/fs/overlayfs/file.c
+++ b/fs/overlayfs/file.c
@@ -48,8 +48,8 @@ static struct file *ovl_open_realfile(const struct file *file,
 		if (!inode_owner_or_capable(real_idmap, realinode))
 			flags &= ~O_NOATIME;
 
-		realfile = backing_file_open(&file->f_path, flags, realpath,
-					     current_cred());
+		realfile = backing_file_open(file_user_path((struct file *) file),
+					     flags, realpath, current_cred());
 	}
 	revert_creds(old_cred);
 
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
index 844874b4a91a..500a9634ad53 100644
--- a/fs/overlayfs/overlayfs.h
+++ b/fs/overlayfs/overlayfs.h
@@ -547,8 +547,6 @@ int ovl_set_metacopy_xattr(struct ovl_fs *ofs, struct dentry *d,
 bool ovl_is_metacopy_dentry(struct dentry *dentry);
 char *ovl_get_redirect_xattr(struct ovl_fs *ofs, const struct path *path, int padding);
 int ovl_ensure_verity_loaded(struct path *path);
-int ovl_get_verity_xattr(struct ovl_fs *ofs, const struct path *path,
-			 u8 *digest_buf, int *buf_length);
 int ovl_validate_verity(struct ovl_fs *ofs,
 			struct path *metapath,
 			struct path *datapath);
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index fe511192f83c..87a36c6eea5f 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -1119,6 +1119,11 @@ static struct ovl_entry *ovl_get_lowerstack(struct super_block *sb,
 		return ERR_PTR(-EINVAL);
 	}
 
+	if (ctx->nr == ctx->nr_data) {
+		pr_err("at least one non-data lowerdir is required\n");
+		return ERR_PTR(-EINVAL);
+	}
+
 	err = -EINVAL;
 	for (i = 0; i < ctx->nr; i++) {
 		l = &ctx->lower[i];
diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c
index 8f080046c59d..99571de665dd 100644
--- a/fs/overlayfs/util.c
+++ b/fs/overlayfs/util.c
@@ -300,7 +300,9 @@ enum ovl_path_type ovl_path_realdata(struct dentry *dentry, struct path *path)
 
 struct dentry *ovl_dentry_upper(struct dentry *dentry)
 {
-	return ovl_upperdentry_dereference(OVL_I(d_inode(dentry)));
+	struct inode *inode = d_inode(dentry);
+
+	return inode ? ovl_upperdentry_dereference(OVL_I(inode)) : NULL;
 }
 
 struct dentry *ovl_dentry_lower(struct dentry *dentry)