From owner-freebsd-current@FreeBSD.ORG  Mon Jan 31 10:12:18 2005
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 2BD6216A4CE; Mon, 31 Jan 2005 10:12:18 +0000 (GMT)
Received: from vbook.fbsd.ru (asplinux.ru [195.133.213.194])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 7FF3243D3F; Mon, 31 Jan 2005 10:12:17 +0000 (GMT)
	(envelope-from vova@vbook.fbsd.ru)
Received: from vova by vbook.fbsd.ru with local (Exim 4.43 (FreeBSD))
	id 1CvYXU-0000Jf-QE; Mon, 31 Jan 2005 13:12:12 +0300
From: Vladimir Grebenschikov <vova@fbsd.ru>
To: Kris Kennaway <kris@obsecurity.org>
In-Reply-To: <20050130025217.GA32612@xor.obsecurity.org>
References: <20050130025217.GA32612@xor.obsecurity.org>
Content-Type: text/plain; charset=KOI8-R
Content-Transfer-Encoding: quoted-printable
Organization: SWsoft
Date: Mon, 31 Jan 2005 13:12:12 +0300
Message-Id: <1107166332.1055.1.camel@localhost>
Mime-Version: 1.0
X-Mailer: Evolution 2.0.3 FreeBSD GNOME Team Port 
Sender: Vladimir Grebenschikov <vova@vbook.fbsd.ru>
cc: alc@FreeBSD.org
cc: "current@freebsd.org" <current@freebsd.org>
Subject: Re: do_execve() finding vmspace_destroyed set under load
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
Reply-To: vova@fbsd.ru
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 31 Jan 2005 10:12:18 -0000

=F7 =D3=C2, 29/01/2005 =D7 18:52 -0800, Kris Kennaway =D0=C9=DB=C5=D4:=20
> I'm seeing the following code in do_execve() frequently being
> triggered when scripts are executed on my SMP machine under load:

Probably related, I have 100% panic on exec of single linux static
binary, it happens in do_execve

sorry, no console here, just retype:

Fatal trap 12: page fault in kernel mode
current process =3D 1638 (tcsh)


db> trace
exec_map_first_page(...) at exec_map_first_page+0x32
do_execve(...) at do_execve+0x2df
kern_execve(...) at kern_execve+0x124
execve(...)=20
...

(tcsh is parent process)
No problems with other linux or native binaries.

>         if (imgp->vmspace_destroyed) {
>                  /* sorry, no more process anymore. exit gracefully */
> #ifdef MAC
>                 mac_execve_exit(imgp);
>                 if (interplabel !=3D NULL)
>                         mac_vnode_label_free(interplabel);
> #endif
>                 exit1(td, W_EXITCODE(0, SIGABRT));
>                 /* NOT REACHED */
>                 error =3D 0;
>         }
>=20
> Needless to say, the scripts get pretty unhappy when they're summarily
> aborted.  What is the cause of this?
>=20
> Kris
--=20
Vladimir B. Grebenchikov
vova@fbsd.ru