From 474708c334a7d4fb27049e7dabaf5b74542568dd Mon Sep 17 00:00:00 2001
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Thu, 27 Jul 2023 02:24:30 +0300
Subject: [PATCH] fork1(): properly track the state of the pg_killsx lock

Reported by:	dchagin
Fixes:	232b922cb363e01ac0dd2a277d93cf74d8485e79
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
---
 sys/kern/kern_fork.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/kern/kern_fork.c b/sys/kern/kern_fork.c
index e64a91ea5f8..83895e036e3 100644
--- a/sys/kern/kern_fork.c
+++ b/sys/kern/kern_fork.c
@@ -989,6 +989,7 @@ fork1(struct thread *td, struct fork_req *fr)
 		 * lock.
 		 */
 		sx_sunlock(&pg->pg_killsx);
+		killsx_locked = false;
 		error = ERESTART;
 		goto fail2;
 	} else {