From d9dea8d7617e6ff70da437074ebb26fd1c954d0c Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Mon, 5 Jul 2021 13:39:04 +0200
Subject: [PATCH] [Lock] fix derivating semaphore from key

---
 src/Symfony/Component/Lock/Store/SemaphoreStore.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Lock/Store/SemaphoreStore.php b/src/Symfony/Component/Lock/Store/SemaphoreStore.php
index cee2d6f6aa..6fd48a4c28 100644
--- a/src/Symfony/Component/Lock/Store/SemaphoreStore.php
+++ b/src/Symfony/Component/Lock/Store/SemaphoreStore.php
@@ -63,7 +63,7 @@ class SemaphoreStore implements StoreInterface, BlockingStoreInterface
             return;
         }
 
-        $keyId = crc32($key);
+        $keyId = unpack('i', md5($key, true))[1];
         $resource = sem_get($keyId);
         $acquired = @sem_acquire($resource, !$blocking);