[src/trunk]: src/sys/kern In execve_runproc(), update the p_waited entry for ...

[pgoyette <pgoyette%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/28abd9edeb38
branches:  trunk
changeset: 340947:28abd9edeb38
user:      pgoyette <pgoyette%NetBSD.org@localhost>
date:      Tue Oct 13 00:24:35 2015 +0000

description:
In execve_runproc(), update the p_waited entry for the process being
moved to SSTOP state, not for its parent.  (It is correct to update
the parent's p_nstopchild count.)  If the value is not already zero,
it could prevent its parent from waiting for the process.

Fixes PR kern/50298

Pullups will be requested for:

       NetBSD-7, -6, -6-0, -6-1, -5, -5-0, -5-1, and -5-2

diffstat:

 sys/kern/kern_exec.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r d96febdc3a06 -r 28abd9edeb38 sys/kern/kern_exec.c
--- a/sys/kern/kern_exec.c      Mon Oct 12 17:09:29 2015 +0000
+++ b/sys/kern/kern_exec.c      Tue Oct 13 00:24:35 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_exec.c,v 1.418 2015/10/02 16:54:15 christos Exp $ */
+/*     $NetBSD: kern_exec.c,v 1.419 2015/10/13 00:24:35 pgoyette Exp $ */
 
 /*-
  * Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -59,7 +59,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_exec.c,v 1.418 2015/10/02 16:54:15 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_exec.c,v 1.419 2015/10/13 00:24:35 pgoyette Exp $");
 
 #include "opt_exec.h"
 #include "opt_execfmt.h"
@@ -1282,7 +1282,7 @@
 
                KERNEL_UNLOCK_ALL(l, &l->l_biglocks);
                p->p_pptr->p_nstopchild++;
-               p->p_pptr->p_waited = 0;
+               p->p_waited = 0;
                mutex_enter(p->p_lock);
                ksiginfo_queue_init(&kq);
                sigclearall(p, &contsigmask, &kq);