From: Dave Hansen <dave-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
To: David Newall <davidn-KzQzY1MbaKjAHznzqCTclw@public.gmane.org>
Cc: jeremy-TSDbQ3PG+2Y@public.gmane.org,
arnd-r2nGTMty4D4@public.gmane.org,
containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
Cedric Le Goater <clg-NmTC/0ZBporQT0dZR+AlfA@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
Alexander Viro
<viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org>,
"H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>,
Daniel Lezcano <dlezcano-NmTC/0ZBporQT0dZR+AlfA@public.gmane.org>,
Peter Chubb
<peterc-M3ycANVxPotyL3EAZA59ERCuuivNXqWP@public.gmane.org>,
Andrey Mirkin <major-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>
Subject: Re: [RFC v6][PATCH 0/9] Kernel based checkpoint/restart
Date: Mon, 20 Oct 2008 10:17:12 -0700 [thread overview]
Message-ID: <1224523032.1848.119.camel@nimitz> (raw)
In-Reply-To: <48F83121.7070705-KzQzY1MbaKjAHznzqCTclw@public.gmane.org>
On Fri, 2008-10-17 at 17:00 +1030, David Newall wrote:
> > The strace/gdb example is *really* hard; but for vfork, you just wait
> > until it's over. The interval between vfork and exec/exit should be
> > short enough not to affect the overall time for a checkpoint
>
> A malicious user could trivially exploit that.
You mean a malicious user could prevent a checkpoint from occurring by
doing this?
There are going to be a lot of those for a long while. :)
-- Dave
WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave@linux.vnet.ibm.com>
To: David Newall <davidn@davidnewall.com>
Cc: Peter Chubb <peterc@gelato.unsw.edu.au>,
Oren Laadan <orenl@cs.columbia.edu>,
Daniel Lezcano <dlezcano@fr.ibm.com>,
Cedric Le Goater <clg@fr.ibm.com>,
jeremy@goop.org, arnd@arndb.de,
containers@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Alexander Viro <viro@zeniv.linux.org.uk>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@elte.hu>,
Thomas Gleixner <tglx@linutronix.de>,
Andrey Mirkin <major@openvz.org>
Subject: Re: [RFC v6][PATCH 0/9] Kernel based checkpoint/restart
Date: Mon, 20 Oct 2008 10:17:12 -0700 [thread overview]
Message-ID: <1224523032.1848.119.camel@nimitz> (raw)
In-Reply-To: <48F83121.7070705@davidnewall.com>
On Fri, 2008-10-17 at 17:00 +1030, David Newall wrote:
> > The strace/gdb example is *really* hard; but for vfork, you just wait
> > until it's over. The interval between vfork and exec/exit should be
> > short enough not to affect the overall time for a checkpoint
>
> A malicious user could trivially exploit that.
You mean a malicious user could prevent a checkpoint from occurring by
doing this?
There are going to be a lot of those for a long while. :)
-- Dave
WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave@linux.vnet.ibm.com>
To: David Newall <davidn@davidnewall.com>
Cc: Peter Chubb <peterc@gelato.unsw.edu.au>,
Oren Laadan <orenl@cs.columbia.edu>,
Daniel Lezcano <dlezcano@fr.ibm.com>,
Cedric Le Goater <clg@fr.ibm.com>,
jeremy@goop.org, arnd@arndb.de,
containers@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Alexander Viro <viro@zeniv.linux.org.uk>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@elte.hu>,
Thomas Gleixner <tglx@linutronix.de>,
Andrey Mirkin <major@openvz.org>
Subject: Re: [RFC v6][PATCH 0/9] Kernel based checkpoint/restart
Date: Mon, 20 Oct 2008 10:17:12 -0700 [thread overview]
Message-ID: <1224523032.1848.119.camel@nimitz> (raw)
In-Reply-To: <48F83121.7070705@davidnewall.com>
On Fri, 2008-10-17 at 17:00 +1030, David Newall wrote:
> > The strace/gdb example is *really* hard; but for vfork, you just wait
> > until it's over. The interval between vfork and exec/exit should be
> > short enough not to affect the overall time for a checkpoint
>
> A malicious user could trivially exploit that.
You mean a malicious user could prevent a checkpoint from occurring by
doing this?
There are going to be a lot of those for a long while. :)
-- Dave
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next prev parent reply other threads:[~2008-10-20 17:17 UTC|newest]
Thread overview: 105+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-08 10:19 [RFC v6][PATCH 0/9] Kernel based checkpoint/restart Oren Laadan
2008-10-08 10:19 ` Oren Laadan
[not found] ` <1223461197-11513-1-git-send-email-orenl-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-10-08 10:19 ` [RFC v6][PATCH 1/9] Create syscalls: sys_checkpoint, sys_restart Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 2/9] General infrastructure for checkpoint restart Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 3/9] x86 support for checkpoint/restart Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 4/9] Dump memory address space Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 5/9] Restore " Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 6/9] Checkpoint/restart: initial documentation Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 7/9] Infrastructure for shared objects Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 8/9] Dump open file descriptors Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 9/9] Restore open file descriprtors Oren Laadan
2008-10-09 12:46 ` [RFC v6][PATCH 0/9] Kernel based checkpoint/restart Ingo Molnar
2008-10-08 10:19 ` [RFC v6][PATCH 1/9] Create syscalls: sys_checkpoint, sys_restart Oren Laadan
2008-10-08 10:19 ` Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 2/9] General infrastructure for checkpoint restart Oren Laadan
2008-10-08 10:19 ` Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 3/9] x86 support for checkpoint/restart Oren Laadan
2008-10-08 10:19 ` Oren Laadan
[not found] ` <1223461197-11513-4-git-send-email-orenl-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-10-10 10:21 ` Cedric Le Goater
2008-10-10 10:21 ` Cedric Le Goater
2008-10-10 10:21 ` Cedric Le Goater
[not found] ` <48EF2CB3.9040900-NmTC/0ZBporQT0dZR+AlfA@public.gmane.org>
2008-10-10 10:24 ` Oren Laadan
2008-10-10 10:24 ` Oren Laadan
2008-10-10 10:24 ` Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 4/9] Dump memory address space Oren Laadan
2008-10-08 10:19 ` Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 5/9] Restore " Oren Laadan
2008-10-08 10:19 ` Oren Laadan
[not found] ` <1223461197-11513-6-git-send-email-orenl-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-10-08 15:35 ` Dave Hansen
2008-10-08 15:35 ` Dave Hansen
2008-10-08 15:35 ` Dave Hansen
2008-10-08 10:19 ` [RFC v6][PATCH 6/9] Checkpoint/restart: initial documentation Oren Laadan
2008-10-08 10:19 ` Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 7/9] Infrastructure for shared objects Oren Laadan
2008-10-08 10:19 ` Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 8/9] Dump open file descriptors Oren Laadan
2008-10-08 10:19 ` Oren Laadan
2008-10-08 10:19 ` [RFC v6][PATCH 9/9] Restore open file descriprtors Oren Laadan
2008-10-08 10:19 ` Oren Laadan
2008-10-09 12:46 ` [RFC v6][PATCH 0/9] Kernel based checkpoint/restart Ingo Molnar
2008-10-09 12:46 ` Ingo Molnar
[not found] ` <20081009124658.GE2952-X9Un+BFzKDI@public.gmane.org>
2008-10-09 12:58 ` Dave Hansen
2008-10-09 12:58 ` Dave Hansen
2008-10-09 12:58 ` Dave Hansen
2008-10-09 13:17 ` Ingo Molnar
2008-10-09 13:17 ` Ingo Molnar
2008-10-09 13:34 ` Dave Hansen
2008-10-09 13:34 ` Dave Hansen
2008-10-09 13:44 ` Ingo Molnar
2008-10-09 13:44 ` Ingo Molnar
2008-10-09 13:44 ` Ingo Molnar
[not found] ` <20081009134415.GA12135-X9Un+BFzKDI@public.gmane.org>
2008-10-09 16:50 ` Dave Hansen
2008-10-09 16:50 ` Dave Hansen
2008-10-09 16:50 ` Dave Hansen
2008-10-10 15:39 ` Ingo Molnar
2008-10-10 15:39 ` Ingo Molnar
2008-10-10 15:39 ` Ingo Molnar
[not found] ` <20081010153951.GD28977-X9Un+BFzKDI@public.gmane.org>
2008-10-13 8:13 ` Cedric Le Goater
2008-10-13 8:13 ` Cedric Le Goater
2008-10-13 8:13 ` Cedric Le Goater
2008-10-13 16:12 ` Oren Laadan
2008-10-13 16:12 ` Oren Laadan
2008-10-15 15:13 ` Cedric Le Goater
2008-10-15 15:13 ` Cedric Le Goater
2008-10-15 23:59 ` Oren Laadan
2008-10-15 23:59 ` Oren Laadan
[not found] ` <48F60891.1070807-NmTC/0ZBporQT0dZR+AlfA@public.gmane.org>
2008-10-15 23:59 ` Oren Laadan
[not found] ` <48F3737B.6070904-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-10-15 15:13 ` Cedric Le Goater
2008-10-13 16:43 ` Dave Hansen
2008-10-13 16:43 ` Dave Hansen
2008-10-15 15:15 ` Cedric Le Goater
2008-10-15 15:15 ` Cedric Le Goater
2008-10-15 15:15 ` Cedric Le Goater
[not found] ` <48F6092D.6050400-NmTC/0ZBporQT0dZR+AlfA@public.gmane.org>
2008-10-16 0:06 ` Oren Laadan
2008-10-16 0:06 ` Oren Laadan
2008-10-16 0:06 ` Oren Laadan
2008-10-16 12:35 ` Daniel Lezcano
2008-10-16 12:35 ` Daniel Lezcano
[not found] ` <48F7352F.3020700-NmTC/0ZBporQT0dZR+AlfA@public.gmane.org>
2008-10-16 13:49 ` Oren Laadan
2008-10-16 13:49 ` Oren Laadan
2008-10-16 13:49 ` Oren Laadan
2008-10-16 22:51 ` Peter Chubb
2008-10-16 22:51 ` Peter Chubb
2008-10-17 6:30 ` David Newall
2008-10-17 6:30 ` David Newall
[not found] ` <48F83121.7070705-KzQzY1MbaKjAHznzqCTclw@public.gmane.org>
2008-10-20 17:17 ` Dave Hansen [this message]
2008-10-20 17:17 ` Dave Hansen
2008-10-20 17:17 ` Dave Hansen
[not found] ` <87r66g8875.wl%peter-LkDQP0DxSMGxwJ88Py/mJxCuuivNXqWP@public.gmane.org>
2008-10-17 6:30 ` David Newall
2008-10-17 6:44 ` Cedric Le Goater
2008-10-17 7:08 ` Oren Laadan
2008-10-17 6:44 ` Cedric Le Goater
2008-10-17 6:44 ` Cedric Le Goater
2008-10-17 7:08 ` Oren Laadan
2008-10-17 7:08 ` Oren Laadan
[not found] ` <48F74674.20202-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-10-16 22:51 ` Peter Chubb
[not found] ` <48F685A3.1060804-eQaUEPhvms7ENvBUuze7eA@public.gmane.org>
2008-10-16 12:35 ` Daniel Lezcano
[not found] ` <48F30315.1070909-NmTC/0ZBporQT0dZR+AlfA@public.gmane.org>
2008-10-13 16:12 ` Oren Laadan
2008-10-13 16:43 ` Dave Hansen
2008-10-09 21:59 ` Greg Kurz
2008-10-09 21:59 ` Greg Kurz
[not found] ` <20081009131701.GA21112-X9Un+BFzKDI@public.gmane.org>
2008-10-09 13:34 ` Dave Hansen
2008-10-09 21:59 ` Greg Kurz
2008-10-09 13:17 ` Ingo Molnar
-- strict thread matches above, loose matches on Subject: below --
2008-10-08 10:19 Oren Laadan
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