From f88756b8d4a92f6f2a04458d1178221a673d246c Mon Sep 17 00:00:00 2001
From: lazerg <lazerg2@gmail.com>
Date: Thu, 5 Nov 2026 06:09:20 +0500
Subject: [PATCH] Fix GH-25195: smm_shared_globals left dangling without an SHM
 backend

---
 ext/opcache/zend_shared_alloc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ext/opcache/zend_shared_alloc.c b/ext/opcache/zend_shared_alloc.c
index 986fa52a146f..3167e40249bf 100644
--- a/ext/opcache/zend_shared_alloc.c
+++ b/ext/opcache/zend_shared_alloc.c
@@ -240,6 +240,7 @@ int zend_shared_alloc_startup(size_t requested_size, size_t reserved_size)
 	if (!g_shared_alloc_handler) {
 		/* try memory handlers in order */
 		if (handler_table->name == NULL) {
+			smm_shared_globals = NULL;
 			return NO_SHM_BACKEND;
 		}
 		for (he = handler_table; he->name; he++) {