From 8dce8181506d2ebd9eb20b9dbb6e2cfb33962d23 Mon Sep 17 00:00:00 2001
From: Artyom Ivanov <artyom.ivanov@red-soft.ru>
Date: Tue, 27 Jan 2026 15:57:35 +0300
Subject: [PATCH] fix(attachment): Avoid recursive lock of `Sync` object on
 worker detach

- Do not lock `mainSync` second time, so that `EngineCheckout` can do its job;
---
 src/jrd/WorkerAttachment.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/jrd/WorkerAttachment.cpp b/src/jrd/WorkerAttachment.cpp
index 60f76939db5..ca73c2f3e40 100644
--- a/src/jrd/WorkerAttachment.cpp
+++ b/src/jrd/WorkerAttachment.cpp
@@ -121,7 +121,8 @@ void WorkerStableAttachment::fini()
 		Database* dbb = attachment->att_database;
 
 		FbLocalStatus status_vector;
-		BackgroundContextHolder tdbb(dbb, attachment, &status_vector, FB_FUNCTION);
+		ThreadContextHolder tdbb(dbb, attachment, &status_vector);
+		DatabaseContextHolder dbHolder(tdbb);
 
 		Monitoring::cleanupAttachment(tdbb);
 		dbb->dbb_extManager->closeAttachment(tdbb, attachment);