From f2f2285a6a2c3305d9bb77020e1f76ba4c4f360b Mon Sep 17 00:00:00 2001
From: Ian Dowse <iedowse@FreeBSD.org>
Date: Mon, 1 Jul 2002 20:46:01 +0000
Subject: [PATCH] The jail syscall calls chroot, which is not mpsafe, so put
 back a mtx_lock(&Giant) around that call.

Reviewed by:	arr
---
 sys/kern/kern_jail.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/kern/kern_jail.c b/sys/kern/kern_jail.c
index cf3b03c97595..1d7659300a70 100644
--- a/sys/kern/kern_jail.c
+++ b/sys/kern/kern_jail.c
@@ -79,7 +79,9 @@ jail(td, uap)
 	if (error)
 		goto bail;
 	ca.path = j.path;
+	mtx_lock(&Giant);
 	error = chroot(td, &ca);
+	mtx_unlock(&Giant);
 	if (error)
 		goto bail;
 	newcred = crget();