From 6de8c71d2ab583784db8ec757f54491785b16fd3 Mon Sep 17 00:00:00 2001
From: Isaac Connor <isaac@zoneminder.com>
Date: Sun, 29 Aug 2021 09:17:31 -0400
Subject: [PATCH] Set shm->valid to false on disconnect.

---
 src/zm_monitor.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/zm_monitor.cpp b/src/zm_monitor.cpp
index 8a1aabe63..8c097fb29 100644
--- a/src/zm_monitor.cpp
+++ b/src/zm_monitor.cpp
@@ -1052,6 +1052,7 @@ bool Monitor::disconnect() {
     return true;
   }
 
+  shared_data->valid = false;
 #if ZM_MEM_MAPPED
   msync(mem_ptr, mem_size, MS_ASYNC);
   munmap(mem_ptr, mem_size);