From fa7a58ab48542df270919dc02881d5c4a2d4f344 Mon Sep 17 00:00:00 2001
From: jake <jake@FreeBSD.org>
Date: Sat, 23 Dec 2000 19:43:10 +0000
Subject: Protect proc.p_pptr and proc.p_children/p_sibling with the
 proctree_lock.

linprocfs not locked pending response from informal maintainer.

Reviewed by:	jhb, -smp@
---
 sys/kern/kern_kthread.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'sys/kern/kern_kthread.c')

diff --git a/sys/kern/kern_kthread.c b/sys/kern/kern_kthread.c
index 6d0146a..8292a8d 100644
--- a/sys/kern/kern_kthread.c
+++ b/sys/kern/kern_kthread.c
@@ -30,6 +30,7 @@
 #include <sys/systm.h>
 #include <sys/proc.h>
 #include <sys/kthread.h>
+#include <sys/lock.h>
 #include <sys/resourcevar.h>
 #include <sys/signalvar.h>
 #include <sys/unistd.h>
@@ -113,7 +114,10 @@ kthread_create(void (*func)(void *), void *arg,
 void
 kthread_exit(int ecode)
 {
+
+	PROCTREE_LOCK(PT_EXCLUSIVE);
 	proc_reparent(curproc, initproc);
+	PROCTREE_LOCK(PT_RELEASE);
 	exit1(curproc, W_EXITCODE(ecode, 0));
 }
 
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