From 66a47eedb6511eed6c74691879c77d14be7f2992 Mon Sep 17 00:00:00 2001
From: Robin Appelman <robin@icewind.nl>
Date: Tue, 12 Jan 2021 15:26:26 +0100
Subject: [PATCH] fix CacheJail::filterCacheEntry when entry is already
 filtered

Signed-off-by: Robin Appelman <robin@icewind.nl>
---
 lib/private/Files/Cache/Wrapper/CacheJail.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/private/Files/Cache/Wrapper/CacheJail.php b/lib/private/Files/Cache/Wrapper/CacheJail.php
index 6c1c17be028c2..6eebb07e9728e 100644
--- a/lib/private/Files/Cache/Wrapper/CacheJail.php
+++ b/lib/private/Files/Cache/Wrapper/CacheJail.php
@@ -93,6 +93,9 @@ protected function formatCacheEntry($entry) {
 	}
 
 	protected function filterCacheEntry($entry) {
+		if ($entry === false) {
+			return false;
+		}
 		$rootLength = strlen($this->getRoot()) + 1;
 		return $rootLength === 1 || ($entry['path'] === $this->getRoot()) || (substr($entry['path'], 0, $rootLength) === $this->getRoot() . '/');
 	}