From 6341805d5ccde08f2a0e955eb3b7e668a89c2198 Mon Sep 17 00:00:00 2001
From: "Chong Wang (cwg)" <cwg@odoo.com>
Date: Thu, 30 Nov 2023 13:27:03 +0100
Subject: [PATCH] [FIX] core: avoid 'Registry' object has no attribute '_m2m'
 error

If `setup_models` is called concurrently,
the first one just delete the `registry._m2m`.
then the latter one tries to access `registry._m2m`.
An error 'Registry' object has no attribute '_m2m' will be raised

This commit add a lock to the `setup_model` to fix the problem

X-original-commit: 9ae78193f5c9ae4dcfa28c4ea4be1a7f98e42136
Part-of: odoo/odoo#146544
---
 odoo/modules/registry.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/odoo/modules/registry.py b/odoo/modules/registry.py
index 568ae14f926..620496045e4 100644
--- a/odoo/modules/registry.py
+++ b/odoo/modules/registry.py
@@ -273,6 +273,7 @@ class Registry(Mapping):
 
         return self.descendants(model_names, '_inherit', '_inherits')
 
+    @locked
     def setup_models(self, cr):
         """ Complete the setup of models.
             This must be called after loading modules and before using the ORM.