Nesting level too deep – recursive dependency? at /var/www/html/lib/private/Log/ExceptionSerializer.php

Nextcloud 24.0.4后台添加用户时，报错Nesting level too deep – recursive dependency? at var/www/html/lib/private/Log/ExceptionSerializer.php#215

说明：此问题不是配置问题，或者服务器问题，目前确认是一个BUG，等待官方修复。（后续官方发布补丁的话会在本文更新）

目前解决办法：

禁用 Circles应用，这个问题就不会再出现，但是又会触发新的BUG

OCP\AppFramework\OCS\OCSException: Invalid displayname

https://github.com/nextcloud/server/issues/33591

总之，这东西版本越新问题越多，考虑要弃坑了！

一、问题复现：

1.管理员用户登录Nextcloud

2.打开“ 设置/用户 ”

3.单击“创建用户”

4.填写用户信息，包括电子邮件、密码、组（触发BUG）和显示名称

5.单击“添加新用户”

6.此时，会出现报错：”An error occurred during the request. Unable to proceed.”

7.刷新网页，用户又创建成功了

8.日志中报错：Nesting level too deep – recursive dependency? at /var/www/html/lib/private/Log/ExceptionSerializer.php#215

二、解决办法

解决办法： 禁用 Circles应用

暂时并未找到解决方法，官方也未对此BUG作回复。

尝试打了补丁，问题依旧存在！

尝试方法：（打补丁无法解决）

（1）下载或创建33501.patch文件，文件内容如下：

From bc35deee5ebf3345d5b65e426ff234d8475e6764 Mon Sep 17 00:00:00 2001
From: Christoph Wurst <christoph@winzerhof-wurst.at>
Date: Wed, 10 Aug 2022 15:54:51 +0200
Subject: [PATCH] Catch PHP in_array recursion inside exception serializer

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>
---
 lib/private/Log/ExceptionSerializer.php | 31 ++++++++++++++++++-------
 1 file changed, 22 insertions(+), 9 deletions(-)

diff --git a/lib/private/Log/ExceptionSerializer.php b/lib/private/Log/ExceptionSerializer.php
index aaf6a39235e0..f19418b3b9ba 100644
--- a/lib/private/Log/ExceptionSerializer.php
+++ b/lib/private/Log/ExceptionSerializer.php
@@ -40,6 +40,9 @@
 use OCA\Encryption\KeyManager;
 use OCA\Encryption\Session;
 use OCP\HintException;
+use Throwable;
+use function in_array;
+use function is_array;
 
 class ExceptionSerializer {
 	public const SENSITIVE_VALUE_PLACEHOLDER = '*** sensitive parameters replaced ***';
@@ -210,16 +213,26 @@ private function filterTrace(array $trace) {
 	}
 
 	private function removeValuesFromArgs($args, $values) {
-		$workArgs = [];
-		foreach ($args as $arg) {
-			if (in_array($arg, $values, true)) {
-				$arg = self::SENSITIVE_VALUE_PLACEHOLDER;
-			} elseif (is_array($arg)) {
-				$arg = $this->removeValuesFromArgs($arg, $values);
+		return array_map(function($arg) use ($values) {
+			// Sensitive?
+			try {
+				if (in_array($arg, $values, true)) {
+					return self::SENSITIVE_VALUE_PLACEHOLDER;
+				}
+			} catch (Throwable $e) {
+				// In very rare cases PHP can't run in_array on the args because
+				// of a recursive structure. In that case we fall back to
+				// assuming the argument could be sensitive
+				return self::SENSITIVE_VALUE_PLACEHOLDER;
 			}
-			$workArgs[] = $arg;
-		}
-		return $workArgs;
+
+			// Array?
+			if (is_array($arg)) {
+				return $this->removeValuesFromArgs($arg, $values);
+			}
+
+			return $arg;
+		}, $args);
 	}
 
 	private function encodeTrace($trace) {

（2）在Nextcloud目录下，执行以下命令

patch -p 1 < 33501.patch