From b50851e8ebfa8acc77607a4ff1095ed6e4a56881 Mon Sep 17 00:00:00 2001
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Fri, 6 Dec 2024 19:01:00 +0200
Subject: [PATCH] prison_proc_iterate(): make it work for prison0

PR:	283163

(cherry picked from commit 831531a82e0f1d1d7b97e50c0587639322ed8d2e)
---
 sys/kern/kern_jail.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sys/kern/kern_jail.c b/sys/kern/kern_jail.c
index a4bd27734e8..c4e89774f18 100644
--- a/sys/kern/kern_jail.c
+++ b/sys/kern/kern_jail.c
@@ -3051,8 +3051,7 @@ prison_proc_iterate(struct prison *pr, void (*cb)(struct proc *, void *),
 	FOREACH_PROC_IN_SYSTEM(p) {
 		PROC_LOCK(p);
 		if (p->p_state != PRS_NEW && p->p_ucred != NULL) {
-			for (ppr = p->p_ucred->cr_prison;
-			    ppr != &prison0;
+			for (ppr = p->p_ucred->cr_prison; ppr != NULL;
 			    ppr = ppr->pr_parent) {
 				if (ppr == pr) {
 					cb(p, cbarg);