From owner-freebsd-bugs@FreeBSD.ORG  Tue Jun 22 05:58:49 2004
Return-Path: <owner-freebsd-bugs@FreeBSD.ORG>
Delivered-To: freebsd-bugs@hub.freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id C66E616A4CE; Tue, 22 Jun 2004 05:58:49 +0000 (GMT)
Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id BDE9E43D1F; Tue, 22 Jun 2004 05:58:49 +0000 (GMT)
	(envelope-from bde@FreeBSD.org)
Received: from freefall.freebsd.org (bde@localhost [127.0.0.1])
	i5M5wmuY055309;	Tue, 22 Jun 2004 05:58:48 GMT
	(envelope-from bde@freefall.freebsd.org)
Received: (from bde@localhost)
	by freefall.freebsd.org (8.12.11/8.12.11/Submit) id i5M5wmkc055305;
	Tue, 22 Jun 2004 05:58:48 GMT
	(envelope-from bde)
Date: Tue, 22 Jun 2004 05:58:48 GMT
From: Bruce Evans <bde@FreeBSD.org>
Message-Id: <200406220558.i5M5wmkc055305@freefall.freebsd.org>
To: jilles@stack.nl, bde@FreeBSD.org, freebsd-bugs@FreeBSD.org
Subject: Re: kern/52490: ^T'ing a zombie causes 'calcru: negative time'
	messages
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Bug reports <freebsd-bugs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-bugs>
List-Post: <mailto:freebsd-bugs@freebsd.org>
List-Help: <mailto:freebsd-bugs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
	<mailto:freebsd-bugs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 22 Jun 2004 05:58:49 -0000

Synopsis: ^T'ing a zombie causes 'calcru: negative time' messages

State-Changed-From-To: open->closed
State-Changed-By: bde
State-Changed-When: Tue Jun 22 05:56:54 GMT 2004
State-Changed-Why: 
Fixed in a different way in rev.1.237 of kern_exit.c in -current.  ^T on
zombies now gives correct results in -current.

Worked around in a different way in 1.55.2.7 of kern_resource.c in
RELENG_4.  ^T on zombies now gives slightly out of date results in RELENG_4.

The test program in the PR was very useful for investigating the bug.

ps and friends aren't affected by the main bug, but they display
completely wrong times for zombies (always 0).  Resource usage is the
main thing that is not discarded when a process exits, so it should
be visible for zombies too.


http://www.freebsd.org/cgi/query-pr.cgi?pr=52490