From: "Jack O'Quin" <joq@io.com>
To: Chris Wright <chrisw@osdl.org>
Cc: Paul Davis <paul@linuxaudiosystems.com>,
Arjan van de Ven <arjanv@redhat.com>,
Lee Revell <rlrevell@joe-job.com>, Matt Mackall <mpm@selenic.com>,
Christoph Hellwig <hch@infradead.org>,
Andrew Morton <akpm@osdl.org>,
mingo@elte.hu, alan@lxorguk.ukuu.org.uk,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] [request for inclusion] Realtime LSM
Date: Tue, 11 Jan 2005 19:43:29 -0600 [thread overview]
Message-ID: <87y8ezzake.fsf@sulphur.joq.us> (raw)
In-Reply-To: <20050111150556.S10567@build.pdx.osdl.net> (Chris Wright's message of "Tue, 11 Jan 2005 15:05:56 -0800")
Chris Wright <chrisw@osdl.org> writes:
> * Paul Davis (paul@linuxaudiosystems.com) wrote:
>> >On Tue, Jan 11, 2005 at 04:38:14PM -0500, Lee Revell wrote:
>> >> Yes but a bug in an app running as root can trash the filesystem. The
>> >> worst you can do with RT privileges is lock up the machine.
>> >
>> >several filesystem and IO threads run at prio -10 but not RT.
>> >That makes me a bit less sure of your statement....
>>
>> Its completely orthogonal. Lee didn't say "tasks running without RT
>> can't mess up filesystems". He said "tasks running as root can trash
>> the filesystem" and "tasks running as RT can lock up the
>> machine". obviously, the intersection point (a root, RT task) is
>> double trouble.
>
> This is straying from the core issue... But, Arjan's saying that an RT
> (non-root) task could trash the filesystem if it deadlocks the machine
> (because those important fs and IO threads don't run).
Lexicographic ambiguity: Lee and Paul are using "trash" for things
like installing a hidden suid root shell or co-opting sendmail into an
open spam relay. Arjan just means crashing the system which forces
reboot to run fsck.
--
joq
next prev parent reply other threads:[~2005-01-12 1:42 UTC|newest]
Thread overview: 266+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-30 2:43 [PATCH] [request for inclusion] Realtime LSM Lee Revell
2005-01-03 14:03 ` Christoph Hellwig
2005-01-03 14:15 ` Arjan van de Ven
2005-01-07 16:40 ` Lee Revell
2005-01-04 18:16 ` Lee Revell
2005-01-04 18:20 ` Christoph Hellwig
2005-01-04 18:55 ` Jack O'Quin
2005-01-04 18:59 ` Lee Revell
2005-01-05 0:01 ` Alan Cox
2005-01-05 1:28 ` Lee Revell
2005-01-05 1:30 ` Lee Revell
2005-01-05 1:50 ` Chris Wright
2005-01-05 1:55 ` Lee Revell
2005-01-05 2:05 ` Chris Wright
2005-01-05 2:58 ` Kyle Moffett
2005-01-05 3:45 ` Chris Wright
2005-01-05 4:06 ` Jack O'Quin
2005-01-05 11:52 ` Ingo Molnar
2005-01-05 15:19 ` Lee Revell
2005-01-05 15:21 ` Lee Revell
2005-01-07 12:56 ` Paul Davis
2005-01-07 13:04 ` Christoph Hellwig
2005-01-07 14:16 ` Paul Davis
2005-01-07 14:26 ` Arjan van de Ven
2005-01-07 14:38 ` Paul Davis
2005-01-07 14:42 ` Arjan van de Ven
2005-01-07 15:27 ` Paul Davis
2005-01-07 15:33 ` Arjan van de Ven
2005-01-07 15:41 ` Paul Davis
2005-01-07 16:03 ` Arjan van de Ven
2005-01-07 16:20 ` Takashi Iwai
2005-01-08 5:36 ` Con Kolivas
2005-01-08 6:21 ` Jack O'Quin
2005-01-07 16:20 ` Paul Davis
2005-01-07 21:12 ` Lee Revell
2005-01-07 21:49 ` Andrew Morton
2005-01-07 22:07 ` Valdis.Kletnieks
2005-01-07 22:36 ` Chris Wright
2005-01-07 23:01 ` Valdis.Kletnieks
2005-01-07 23:20 ` Andrew Morton
2005-01-07 23:34 ` Valdis.Kletnieks
2005-01-10 21:05 ` Matt Mackall
2005-01-07 22:10 ` Christoph Hellwig
2005-01-07 22:26 ` Paul Davis
2005-01-07 22:29 ` Chris Wright
2005-01-08 6:12 ` Jack O'Quin
2005-01-08 16:56 ` ross
2005-01-08 18:25 ` Christoph Hellwig
2005-01-08 22:20 ` Lee Revell
2005-01-08 22:27 ` Andreas Steinmetz
2005-01-08 22:14 ` Lee Revell
2005-01-10 21:20 ` Matt Mackall
2005-01-11 13:05 ` Paul Davis
2005-01-11 16:28 ` Jack O'Quin
2005-01-11 18:59 ` Matt Mackall
2005-01-11 20:47 ` utz lehmann
2005-01-11 21:07 ` Lee Revell
2005-01-11 19:17 ` Matt Mackall
2005-01-11 19:42 ` Jack O'Quin
2005-01-11 20:50 ` Chris Wright
2005-01-11 20:58 ` Ingo Molnar
2005-01-11 21:14 ` Chris Wright
2005-01-11 21:27 ` Ingo Molnar
2005-01-11 22:13 ` Chris Wright
2005-01-11 22:26 ` Con Kolivas
2005-01-12 3:21 ` Jack O'Quin
2005-01-12 4:29 ` Chris Wright
2005-01-13 5:44 ` Jack O'Quin
2005-01-13 6:34 ` Matt Mackall
2005-01-13 19:17 ` Jack O'Quin
2005-01-14 20:52 ` Lee Revell
2005-01-15 0:42 ` Jack O'Quin
2005-01-15 2:19 ` Randy.Dunlap
2005-01-15 4:06 ` Jack O'Quin
2005-01-15 13:49 ` Ingo Molnar
2005-01-15 23:02 ` Jack O'Quin
2005-01-15 23:38 ` Jack O'Quin
2005-01-16 23:13 ` Ingo Molnar
2005-01-16 23:57 ` Jack O'Quin
2005-01-17 9:17 ` Sytse Wielinga
2005-01-17 14:36 ` Ingo Molnar
2005-01-17 10:06 ` Ingo Molnar
2005-01-18 5:02 ` Jack O'Quin
2005-01-18 8:02 ` Ingo Molnar
2005-01-18 17:05 ` Jack O'Quin
2005-01-19 8:24 ` Ingo Molnar
2005-01-19 14:39 ` Ingo Molnar
2005-01-19 17:45 ` Jack O'Quin
2005-01-19 18:32 ` Matt Mackall
2005-01-20 8:07 ` Ingo Molnar
2005-01-20 8:05 ` Ingo Molnar
2005-01-11 14:30 ` Jack O'Quin
2005-01-11 19:50 ` Matt Mackall
2005-01-11 19:57 ` Jack O'Quin
2005-01-11 20:05 ` Matt Mackall
2005-01-11 20:29 ` Lee Revell
2005-01-11 20:47 ` Chris Wright
2005-01-11 21:10 ` Lee Revell
2005-01-11 21:20 ` Chris Wright
2005-01-11 21:28 ` Matt Mackall
2005-01-11 21:38 ` Lee Revell
2005-01-11 21:41 ` Arjan van de Ven
2005-01-11 22:51 ` Paul Davis
2005-01-11 23:05 ` Chris Wright
2005-01-12 1:43 ` Jack O'Quin [this message]
2005-01-12 7:49 ` Arjan van de Ven
2005-01-12 21:12 ` Lee Revell
2005-01-13 0:44 ` Jack O'Quin
2005-01-13 7:28 ` Arjan van de Ven
2005-01-13 21:04 ` Jack O'Quin
2005-01-13 21:07 ` Arjan van de Ven
2005-01-13 21:25 ` Lee Revell
2005-01-13 21:43 ` Arjan van de Ven
2005-01-13 23:31 ` Jack O'Quin
2005-01-14 0:33 ` Chris Wright
2005-01-14 0:50 ` Con Kolivas
2005-01-14 1:20 ` Matt Mackall
2005-01-14 1:27 ` Con Kolivas
2005-01-14 17:20 ` Mike Galbraith
2005-01-15 1:14 ` Jack O'Quin
2005-01-15 8:06 ` Mike Galbraith
2005-01-15 23:48 ` Jack O'Quin
2005-01-14 2:05 ` utz lehmann
2005-01-14 2:08 ` Con Kolivas
2005-01-14 2:23 ` Andrew Morton
2005-01-14 2:35 ` utz lehmann
2005-01-14 2:42 ` Con Kolivas
2005-01-14 3:20 ` Andrew Morton
2005-01-14 3:28 ` utz lehmann
2005-01-14 3:26 ` utz lehmann
2005-01-14 2:24 ` Nick Piggin
2005-01-14 2:40 ` Paul Davis
2005-01-14 2:57 ` Nick Piggin
2005-01-14 3:12 ` Andrew Morton
2005-01-14 3:18 ` Con Kolivas
2005-01-14 3:30 ` Paul Davis
2005-01-14 3:38 ` Con Kolivas
2005-01-14 3:51 ` Paul Davis
2005-01-14 4:00 ` Con Kolivas
2005-01-14 4:16 ` Nick Piggin
2005-01-14 4:04 ` Nick Piggin
2005-01-14 3:31 ` Nick Piggin
2005-01-14 3:34 ` Paul Davis
2005-01-14 4:11 ` Con Kolivas
2005-01-14 4:23 ` Nick Piggin
2005-01-14 4:45 ` Paul Davis
2005-01-14 5:14 ` Nick Piggin
2005-01-14 9:21 ` Will Dyson
2005-01-14 9:54 ` Nick Piggin
2005-01-14 6:57 ` Matt Mackall
2005-01-14 7:04 ` Andrew Morton
2005-01-14 7:55 ` Chris Wright
2005-01-14 20:10 ` Chris Wright
2005-01-14 20:55 ` Matt Mackall
2005-01-14 23:04 ` Chris Wright
2005-01-15 0:58 ` Matt Mackall
2005-01-11 22:05 ` Matt Mackall
2005-01-11 21:42 ` Chris Wright
2005-01-11 22:16 ` Matt Mackall
2005-01-11 22:21 ` Chris Wright
2005-01-11 22:36 ` utz lehmann
2005-01-11 22:41 ` Chris Wright
2005-01-11 22:17 ` utz
2005-01-11 22:48 ` Paul Davis
2005-01-11 23:06 ` Matt Mackall
2005-01-12 2:13 ` Paul Davis
2005-01-12 19:09 ` Matt Mackall
2005-01-12 21:25 ` Lee Revell
2005-01-11 20:19 ` Chris Friesen
2005-01-11 22:45 ` Paul Davis
2005-01-11 21:21 ` Ingo Molnar
2005-01-12 2:10 ` Jack O'Quin
2005-01-15 4:56 ` Jack O'Quin
2005-01-15 14:43 ` Ingo Molnar
2005-01-15 23:10 ` Jack O'Quin
2005-01-16 1:48 ` Jack O'Quin
2005-01-16 4:30 ` Jack O'Quin
2005-01-16 23:22 ` Ingo Molnar
2005-01-07 23:00 ` Lee Revell
2005-01-07 22:22 ` Paul Davis
2005-01-07 22:44 ` Andreas Steinmetz
2005-01-07 16:03 ` Martin Mares
2005-01-07 16:22 ` Paul Davis
2005-01-08 13:04 ` Paul Jakma
2005-01-07 14:47 ` Christoph Hellwig
2005-01-07 15:26 ` Paul Davis
2005-01-07 16:08 ` Martin Mares
2005-01-07 16:14 ` Paul Davis
2005-01-07 16:29 ` Martin Mares
2005-01-07 16:36 ` Paul Davis
2005-01-07 17:06 ` Martin Mares
2005-01-07 17:29 ` Chris Wright
2005-01-07 17:32 ` Martin Mares
2005-01-07 17:38 ` Chris Wright
2005-01-07 19:55 ` Jack O'Quin
2005-01-07 16:37 ` Takashi Iwai
2005-01-07 16:41 ` Martin Mares
2005-01-07 17:53 ` Chris Wright
2005-01-07 18:01 ` Chris Wright
2005-01-05 18:18 ` Jack O'Quin
2005-01-05 4:04 ` Jack O'Quin
2005-01-05 11:25 ` Christoph Hellwig
2005-01-05 17:32 ` Lee Revell
2005-01-05 19:11 ` Christoph Hellwig
2005-01-05 11:20 ` Christoph Hellwig
2005-01-04 18:57 ` Lee Revell
2005-01-05 1:35 ` Andreas Steinmetz
2005-01-05 4:18 ` Alan Cox
2005-01-05 5:50 ` Andrew Morton
2005-01-05 12:06 ` Herbert Poetzl
2005-01-07 1:13 ` Matt Mackall
2005-01-07 1:55 ` Alan Cox
2005-01-07 20:05 ` Matt Mackall
2005-01-05 20:09 ` Olaf Dietsche
2005-01-07 1:18 ` Matt Mackall
2005-01-07 2:36 ` Lee Revell
2005-01-07 5:54 ` Jack O'Quin
2005-01-07 20:02 ` Matt Mackall
2005-01-07 20:21 ` Chris Wright
2005-01-07 20:27 ` Jack O'Quin
2005-01-07 20:46 ` Matt Mackall
2005-01-07 20:55 ` Lee Revell
2005-01-07 21:20 ` Matt Mackall
2005-01-07 21:29 ` Chris Wright
2005-01-07 20:45 ` Lee Revell
2005-01-05 11:39 ` Christoph Hellwig
2005-01-05 17:35 ` Lee Revell
2005-01-05 19:11 ` Christoph Hellwig
2005-01-05 11:24 ` Christoph Hellwig
[not found] <20050112185258.GG2940@waste.org>
2005-01-12 21:16 ` Paul Davis
2005-03-08 3:50 ` Andrew Morton
2005-03-08 3:55 ` Christoph Hellwig
2005-03-08 4:16 ` Andrew Morton
2005-03-08 4:22 ` Ingo Molnar
2005-03-08 4:28 ` Andrew Morton
2005-03-08 4:32 ` Christoph Hellwig
2005-03-08 4:47 ` Matt Mackall
2005-03-08 4:58 ` Chris Wright
2005-03-08 18:55 ` Lee Revell
2005-03-08 19:11 ` Paul Davis
2005-03-08 20:29 ` Andrew Morton
2005-03-08 21:20 ` Christoph Hellwig
2005-03-08 21:34 ` Lee Revell
2005-03-08 23:55 ` James Morris
2005-03-08 5:19 ` Jack O'Quin
2005-03-08 4:33 ` Matt Mackall
2005-03-08 4:40 ` Andrew Morton
2005-03-08 5:30 ` Jack O'Quin
2005-03-08 6:33 ` Matt Mackall
2005-03-09 3:39 ` Jack O'Quin
2005-03-09 3:44 ` Matt Mackall
2005-03-09 4:04 ` Jack O'Quin
2005-03-10 14:01 ` Pavel Machek
2005-03-08 5:40 ` Peter Williams
2005-03-08 5:49 ` Ingo Molnar
2005-03-08 6:28 ` Peter Williams
2005-03-08 6:40 ` Chris Wright
2005-03-08 6:42 ` Ingo Molnar
2005-03-08 6:00 ` Chris Wright
2005-03-08 6:18 ` Matt Mackall
2005-03-08 5:38 ` Ingo Molnar
2005-03-08 6:45 ` Chris Wright
2005-03-08 6:49 ` Matt Mackall
2005-03-08 6:55 ` Andrew Morton
2005-03-08 8:45 ` Matt Mackall
2005-03-08 19:17 ` utz lehmann
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