From 0d5138c1f93a77ff52551a76d0d8575413550859 Mon Sep 17 00:00:00 2001
From: Andrey Kleshchev <117672381+akleshchev@users.noreply.github.com>
Date: Tue, 21 Oct 2025 20:34:23 +0300
Subject: #4839 Crash at LLPluginProcessParent::poll

Missed lock
---
 indra/llplugin/llpluginprocessparent.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'indra/llplugin/llpluginprocessparent.cpp')

diff --git a/indra/llplugin/llpluginprocessparent.cpp b/indra/llplugin/llpluginprocessparent.cpp
index afee099697..02c7d9507d 100644
--- a/indra/llplugin/llpluginprocessparent.cpp
+++ b/indra/llplugin/llpluginprocessparent.cpp
@@ -983,6 +983,7 @@ void LLPluginProcessParent::poll(F64 timeout)
     }
 
     // Remove instances in the done state from the sInstances map.
+    LLCoros::LockType lock(*sInstancesMutex);
     mapInstances_t::iterator itClean = sInstances.begin();
     while (itClean != sInstances.end())
     {
-- 
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