From 1ed2e49b558e8229ef75b83204cce54bcd1a2bd0 Mon Sep 17 00:00:00 2001
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Tue, 20 Oct 2015 20:12:42 +0000
Subject: [PATCH] No need to dereference struct proc to pids when comparing
 processes for equality.

Reviewed by:	jhb, pho
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
---
 sys/kern/sys_process.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/kern/sys_process.c b/sys/kern/sys_process.c
index 8392c837649..588b43c606f 100644
--- a/sys/kern/sys_process.c
+++ b/sys/kern/sys_process.c
@@ -749,7 +749,7 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data)
 
 	case PT_ATTACH:
 		/* Self */
-		if (p->p_pid == td->td_proc->p_pid) {
+		if (p == td->td_proc) {
 			error = EINVAL;
 			goto fail;
 		}