From d7e8b29a3c7075ef6da13e4cd475a04a1ec490fd Mon Sep 17 00:00:00 2001
From: claudio <claudio@openbsd.org>
Date: Thu, 18 Apr 2024 09:06:42 +0000
Subject: [PATCH] If a proc has P_WEXIT set do not stop it, let it exit since
 it is already mostly dead.

This is more like belts and suspenders since a proc in exit1() will not
receive signals anymore and so proc_stop() should not be reachable. This
is even the case when sigexit() is called and a coredump() is happening.
OK mpi@
---
 sys/kern/kern_sig.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c
index 60d7941ece2..2280bc7abd7 100644
--- a/sys/kern/kern_sig.c
+++ b/sys/kern/kern_sig.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: kern_sig.c,v 1.324 2024/04/10 10:05:26 claudio Exp $	*/
+/*	$OpenBSD: kern_sig.c,v 1.325 2024/04/18 09:06:42 claudio Exp $	*/
 /*	$NetBSD: kern_sig.c,v 1.54 1996/04/22 01:38:32 christos Exp $	*/
 
 /*
@@ -1443,6 +1443,9 @@ proc_stop(struct proc *p, int sw)
 #ifdef MULTIPROCESSOR
 	SCHED_ASSERT_LOCKED();
 #endif
+	/* do not stop exiting procs */
+	if (ISSET(p->p_flag, P_WEXIT))
+		return;
 
 	p->p_stat = SSTOP;
 	atomic_clearbits_int(&pr->ps_flags, PS_WAITED);
-- 
2.20.1