From 0a213e71b3e6b97536022a05f3210f06530bbf91 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Sat, 22 Jan 2022 00:04:47 +0100
Subject: [PATCH] Process-lock is required when changing processors

This is somewhat unfortunate, since session.cc also takes the
lock shortly afterward to call ->ensure_io()

This should be consolidated before release.
---
 libs/ardour/track.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libs/ardour/track.cc b/libs/ardour/track.cc
index 0eaabbb365..44ee92ee39 100644
--- a/libs/ardour/track.cc
+++ b/libs/ardour/track.cc
@@ -106,6 +106,7 @@ Track::init ()
 	 */
 
 	if (!is_auditioner()) {
+		Glib::Threads::Mutex::Lock lm (AudioEngine::instance()->process_lock ());
 		boost::shared_ptr<TriggerBox> tb (new TriggerBox (_session, data_type ()));
 		tb->set_owner (this);
 		add_processor (tb, _polarity);