From: Jeff Dike <jdike@addtoit.com>
To: David Wagner <daw-usenet@taverner.cs.berkeley.edu>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [patch] remove MNT_NOEXEC check for PROT_EXEC mmaps
Date: Wed, 4 Oct 2006 09:41:22 -0400 [thread overview]
Message-ID: <20061004134122.GA3789@ccure.user-mode-linux.org> (raw)
In-Reply-To: <efv957$31o$2@taverner.cs.berkeley.edu>
On Wed, Oct 04, 2006 at 03:17:59AM +0000, David Wagner wrote:
> To be honest, I still don't think you've answered Arjan's question. Ok,
> so you say it is not a library and not a binary. So what is it that you
> are maping in as executable, and why do you think it is reasonable to
> ask the Linux kernel to allow you to execute it, if it lives on a noexec
> partition?
He mentioned UML as being one thing affected by this. In this case, you
can think of it as generating code in a piece of shared memory and
then executing it. In reality, the code is read from disk rather than
being generated internally, and it's executed in a different process,
so it needs to be MAP_SHARED.
Jeff
next prev parent reply other threads:[~2006-10-04 13:44 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-23 10:30 [patch] remove MNT_NOEXEC check for PROT_EXEC mmaps Stas Sergeev
2006-09-23 15:16 ` Hugh Dickins
2006-09-23 15:36 ` Ulrich Drepper
2006-09-23 15:47 ` Stas Sergeev
2006-09-25 1:12 ` Valdis.Kletnieks
2006-09-25 4:35 ` Stas Sergeev
2006-09-23 15:42 ` Stas Sergeev
2006-09-23 16:04 ` Hugh Dickins
2006-09-23 16:38 ` Stas Sergeev
2006-09-23 18:58 ` Alan Cox
2006-09-24 6:55 ` Stas Sergeev
2006-09-24 9:17 ` Hugh Dickins
2006-09-24 10:00 ` Stas Sergeev
2006-09-24 13:53 ` Alan Cox
2006-09-24 14:54 ` Stas Sergeev
2006-09-24 15:48 ` Ulrich Drepper
2006-09-24 16:31 ` Stas Sergeev
2006-09-24 16:49 ` Ulrich Drepper
2006-09-24 17:04 ` Stas Sergeev
2006-09-24 18:09 ` Stas Sergeev
2006-09-24 19:14 ` David Wagner
2006-09-24 19:37 ` Kyle Moffett
2006-09-24 22:49 ` David Wagner
2006-09-25 10:53 ` Pavel Machek
2006-09-25 21:36 ` David Wagner
2006-09-27 11:51 ` Pavel Machek
2006-09-24 20:06 ` Denis Vlasenko
2006-09-24 20:22 ` Stas Sergeev
2006-09-24 23:04 ` David Wagner
2006-09-26 19:46 ` Stas Sergeev
2006-09-27 22:33 ` Arjan van de Ven
2006-09-27 23:10 ` David Wagner
2006-09-27 23:38 ` Jesper Juhl
2006-09-29 1:14 ` David Wagner
2006-09-28 4:52 ` Stas Sergeev
2006-09-30 9:42 ` Stas Sergeev
2006-10-03 15:01 ` Arjan van de Ven
2006-10-03 17:15 ` Stas Sergeev
2006-10-03 17:23 ` Ulrich Drepper
2006-10-03 18:06 ` Stas Sergeev
2006-10-03 19:19 ` Ulrich Drepper
2006-10-03 19:40 ` Stas Sergeev
2006-10-03 19:54 ` Arjan van de Ven
2006-10-04 19:36 ` Stas Sergeev
2006-10-04 21:31 ` David Wagner
2006-10-04 3:11 ` David Wagner
2006-10-04 3:51 ` Ulrich Drepper
2006-10-04 4:21 ` David Wagner
2006-10-04 6:03 ` Kyle Moffett
2006-10-04 17:30 ` Ulrich Drepper
2006-10-03 18:23 ` Arjan van de Ven
2006-10-03 18:40 ` Stas Sergeev
2006-10-03 18:42 ` Arjan van de Ven
2006-10-03 19:07 ` Stas Sergeev
2006-10-03 21:00 ` Jakub Jelinek
2006-10-04 19:06 ` Stas Sergeev
2006-10-06 18:09 ` [patch] honour MNT_NOEXEC for access() Stas Sergeev
2006-10-06 21:34 ` Alan Cox
2006-10-06 21:17 ` Ulrich Drepper
2006-10-07 11:19 ` Stas Sergeev
2006-10-07 15:00 ` David Wagner
2006-10-07 16:31 ` Ulrich Drepper
2006-10-07 19:14 ` Stas Sergeev
2006-10-07 19:36 ` David Wagner
2006-10-08 8:32 ` Arjan van de Ven
2006-10-08 9:11 ` Stas Sergeev
2006-10-08 10:55 ` Arjan van de Ven
2006-10-08 13:46 ` Stas Sergeev
2006-10-09 2:09 ` Horst H. von Brand
2006-10-09 4:40 ` Stas Sergeev
2006-10-07 13:18 ` Stas Sergeev
2006-10-08 0:30 ` Jeremy Fitzhardinge
2006-10-08 9:10 ` Stas Sergeev
2006-10-08 9:56 ` Jeremy Fitzhardinge
2006-10-08 10:36 ` Stas Sergeev
2006-10-08 10:39 ` Jesper Juhl
2006-10-08 13:22 ` Stas Sergeev
2006-10-06 22:26 ` Jesper Juhl
2006-10-04 19:30 ` [patch] remove MNT_NOEXEC check for PROT_EXEC mmaps Stas Sergeev
2006-10-04 3:20 ` David Wagner
2006-10-04 3:17 ` David Wagner
2006-10-04 13:41 ` Jeff Dike [this message]
2006-10-04 18:02 ` Jesper Juhl
2006-10-04 19:48 ` Stas Sergeev
2006-09-27 19:16 ` [patch] remove MNT_NOEXEC check for PROT_EXEC MAP_PRIVATE mmaps Stas Sergeev
2006-09-27 20:05 ` Hugh Dickins
2006-09-28 4:33 ` Stas Sergeev
2006-09-28 16:42 ` Hugh Dickins
2006-09-29 1:41 ` David Wagner
2006-09-29 20:50 ` Arjan van de Ven
2006-09-29 16:54 ` Stas Sergeev
2006-09-24 19:59 ` [patch] remove MNT_NOEXEC check for PROT_EXEC mmaps Alan Cox
2006-09-24 20:07 ` Stas Sergeev
2006-09-24 0:53 ` Arjan van de Ven
2006-09-25 17:17 ` Stas Sergeev
2006-09-25 17:43 ` Stas Sergeev
2006-09-25 20:12 ` David Wagner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20061004134122.GA3789@ccure.user-mode-linux.org \
--to=jdike@addtoit.com \
--cc=daw-usenet@taverner.cs.berkeley.edu \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.