From 94b616bdfad177daa99f5e87535943f509198f6f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Erik=20Pedersen?=
 <bjorn.erik.pedersen@gmail.com>
Date: Fri, 30 Jul 2021 11:53:27 +0200
Subject: [PATCH] config: Fix a potential deadlock in config reading

Note that the deadlock has not been seen earlier, in tests on in real Hugo sites.

Fixes #8791
---
 config/defaultConfigProvider.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/config/defaultConfigProvider.go b/config/defaultConfigProvider.go
index 05c3b9126..2391ec853 100644
--- a/config/defaultConfigProvider.go
+++ b/config/defaultConfigProvider.go
@@ -89,6 +89,7 @@ func (c *defaultConfigProvider) Get(k string) interface{} {
 	c.mu.RLock()
 	key, m := c.getNestedKeyAndMap(strings.ToLower(k), false)
 	if m == nil {
+		c.mu.RUnlock()
 		return nil
 	}
 	v := m[key]