From cf93aa166c9adbdfe92d0c66119ef3a153eed2d4 Mon Sep 17 00:00:00 2001
From: Don Lewis <truckman@FreeBSD.org>
Date: Thu, 19 Feb 2004 10:39:42 +0000
Subject: [PATCH] When reparenting a process in the PT_DETACH code, only set
 p_sigparent to SIGCHLD if the new parent process is initproc.

MFC after:	2 weeks
---
 sys/kern/sys_process.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/kern/sys_process.c b/sys/kern/sys_process.c
index 9a79551ed98..7a0c02ea01e 100644
--- a/sys/kern/sys_process.c
+++ b/sys/kern/sys_process.c
@@ -561,7 +561,8 @@ kern_ptrace(struct thread *td, int req, pid_t pid, void *addr, int data)
 					PROC_UNLOCK(pp);
 				PROC_LOCK(p);
 				proc_reparent(p, pp);
-				p->p_sigparent = SIGCHLD;
+				if (pp == initproc)
+					p->p_sigparent = SIGCHLD;
 			}
 			p->p_flag &= ~(P_TRACED | P_WAITED);
 			p->p_oppid = 0;