From: Dave Hansen <dave.hansen@intel.com>
To: Christoph Lameter <cl@linux.com>
Cc: kernel-hardening@lists.openwall.com,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Laura Abbott <laura@labbott.name>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Kees Cook <keescook@chromium.org>
Subject: Re: [kernel-hardening] [RFC][PATCH 6/7] mm: Add Kconfig option for slab sanitization
Date: Tue, 22 Dec 2015 09:28:49 -0800 [thread overview]
Message-ID: <56798851.60906@intel.com> (raw)
In-Reply-To: <alpine.DEB.2.20.1512221124230.14335@east.gentwo.org>
On 12/22/2015 09:24 AM, Christoph Lameter wrote:
> On Tue, 22 Dec 2015, Dave Hansen wrote:
>> Or are you just saying that we should use the poisoning *code* that we
>> already have in slub? Using the _code_ looks like a really good idea,
>> whether we're using it to write POISON_FREE, or 0's. Something like the
>> attached patch?
>
> Why would you use zeros? The point is just to clear the information right?
> The regular poisoning does that.
It then allows you to avoid the zeroing at allocation time.
WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave.hansen@intel.com>
To: Christoph Lameter <cl@linux.com>
Cc: kernel-hardening@lists.openwall.com,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Laura Abbott <laura@labbott.name>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Kees Cook <keescook@chromium.org>
Subject: Re: [kernel-hardening] [RFC][PATCH 6/7] mm: Add Kconfig option for slab sanitization
Date: Tue, 22 Dec 2015 09:28:49 -0800 [thread overview]
Message-ID: <56798851.60906@intel.com> (raw)
In-Reply-To: <alpine.DEB.2.20.1512221124230.14335@east.gentwo.org>
On 12/22/2015 09:24 AM, Christoph Lameter wrote:
> On Tue, 22 Dec 2015, Dave Hansen wrote:
>> Or are you just saying that we should use the poisoning *code* that we
>> already have in slub? Using the _code_ looks like a really good idea,
>> whether we're using it to write POISON_FREE, or 0's. Something like the
>> attached patch?
>
> Why would you use zeros? The point is just to clear the information right?
> The regular poisoning does that.
It then allows you to avoid the zeroing at allocation time.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2015-12-22 17:28 UTC|newest]
Thread overview: 113+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-22 3:40 [kernel-hardening] [RFC][PATCH 0/7] Sanitization of slabs based on grsecurity/PaX Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 3:40 ` [kernel-hardening] [RFC][PATCH 1/7] mm/slab_common.c: Add common support for slab saniziation Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 20:48 ` [kernel-hardening] " Vlastimil Babka
2015-12-22 20:48 ` Vlastimil Babka
2015-12-22 20:48 ` Vlastimil Babka
2016-01-06 0:17 ` [kernel-hardening] " Kees Cook
2016-01-06 0:17 ` Kees Cook
2016-01-06 0:17 ` Kees Cook
2016-01-06 2:06 ` [kernel-hardening] " Laura Abbott
2016-01-06 2:06 ` Laura Abbott
2016-01-06 2:06 ` Laura Abbott
2016-01-06 0:19 ` [kernel-hardening] " Kees Cook
2016-01-06 0:19 ` Kees Cook
2016-01-06 0:19 ` Kees Cook
2015-12-22 3:40 ` [kernel-hardening] [RFC][PATCH 2/7] slub: Add support for sanitization Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 3:40 ` [kernel-hardening] [RFC][PATCH 3/7] slab: " Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 3:40 ` [kernel-hardening] [RFC][PATCH 4/7] slob: " Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 3:40 ` [kernel-hardening] [RFC][PATCH 5/7] mm: Mark several cases as SLAB_NO_SANITIZE Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2016-01-06 0:21 ` [kernel-hardening] " Kees Cook
2016-01-06 0:21 ` Kees Cook
2016-01-06 0:21 ` Kees Cook
2016-01-06 2:11 ` [kernel-hardening] " Laura Abbott
2016-01-06 2:11 ` Laura Abbott
2016-01-06 2:11 ` Laura Abbott
2015-12-22 3:40 ` [kernel-hardening] [RFC][PATCH 6/7] mm: Add Kconfig option for slab sanitization Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 9:33 ` [kernel-hardening] " Mathias Krause
2015-12-22 9:33 ` Mathias Krause
2015-12-22 17:51 ` Laura Abbott
2015-12-22 17:51 ` Laura Abbott
2015-12-22 18:37 ` Mathias Krause
2015-12-22 18:37 ` Mathias Krause
2015-12-22 19:18 ` Laura Abbott
2015-12-22 19:18 ` Laura Abbott
2015-12-22 20:01 ` Christoph Lameter
2015-12-22 20:01 ` Christoph Lameter
2015-12-22 20:06 ` Mathias Krause
2015-12-22 20:06 ` Mathias Krause
2015-12-22 14:57 ` Dave Hansen
2015-12-22 14:57 ` Dave Hansen
2015-12-22 16:25 ` Christoph Lameter
2015-12-22 16:25 ` Christoph Lameter
2015-12-22 17:22 ` Dave Hansen
2015-12-22 17:24 ` Christoph Lameter
2015-12-22 17:28 ` Dave Hansen [this message]
2015-12-22 17:28 ` Dave Hansen
2015-12-22 18:08 ` Christoph Lameter
2015-12-22 18:08 ` Christoph Lameter
2015-12-22 18:19 ` Dave Hansen
2015-12-22 18:19 ` Dave Hansen
2015-12-22 19:13 ` Laura Abbott
2015-12-22 19:13 ` Laura Abbott
2015-12-22 19:32 ` Dave Hansen
2015-12-22 19:32 ` Dave Hansen
2016-01-06 0:29 ` Kees Cook
2016-01-06 0:29 ` Kees Cook
2016-01-06 2:46 ` Laura Abbott
2016-01-06 2:46 ` Laura Abbott
2015-12-22 3:40 ` [kernel-hardening] [RFC][PATCH 7/7] lkdtm: Add READ_AFTER_FREE test Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2015-12-22 3:40 ` Laura Abbott
2016-01-06 0:15 ` [kernel-hardening] " Kees Cook
2016-01-06 0:15 ` Kees Cook
2016-01-06 0:15 ` Kees Cook
2016-01-06 2:49 ` [kernel-hardening] " Laura Abbott
2016-01-06 2:49 ` Laura Abbott
2016-01-06 2:49 ` Laura Abbott
2015-12-22 16:08 ` [kernel-hardening] Re: [RFC][PATCH 0/7] Sanitization of slabs based on grsecurity/PaX Christoph Lameter
2015-12-22 16:08 ` Christoph Lameter
2015-12-22 16:08 ` Christoph Lameter
2015-12-22 16:15 ` [kernel-hardening] " Dave Hansen
2015-12-22 16:15 ` Dave Hansen
2015-12-22 16:38 ` Daniel Micay
2015-12-22 20:04 ` Laura Abbott
2015-12-22 20:04 ` Laura Abbott
2015-12-22 20:04 ` Laura Abbott
2016-01-06 0:09 ` [kernel-hardening] " Kees Cook
2016-01-06 0:09 ` Kees Cook
2016-01-06 0:09 ` Kees Cook
2016-01-06 3:17 ` [kernel-hardening] " Laura Abbott
2016-01-06 3:17 ` Laura Abbott
2016-01-06 3:17 ` Laura Abbott
2016-01-07 16:26 ` [kernel-hardening] " Christoph Lameter
2016-01-07 16:26 ` Christoph Lameter
2016-01-07 16:26 ` Christoph Lameter
2016-01-08 1:23 ` [kernel-hardening] " Laura Abbott
2016-01-08 1:23 ` Laura Abbott
2016-01-08 1:23 ` Laura Abbott
2016-01-08 14:07 ` [kernel-hardening] " Christoph Lameter
2016-01-08 14:07 ` Christoph Lameter
2016-01-08 14:07 ` Christoph Lameter
2016-01-14 3:49 ` [kernel-hardening] " Laura Abbott
2016-01-14 3:49 ` Laura Abbott
2016-01-14 3:49 ` Laura Abbott
2016-01-21 3:35 ` [kernel-hardening] " Laura Abbott
2016-01-21 3:35 ` Laura Abbott
2016-01-21 3:35 ` Laura Abbott
2016-01-21 15:39 ` [kernel-hardening] " Christoph Lameter
2016-01-21 15:39 ` Christoph Lameter
2016-01-21 15:39 ` Christoph Lameter
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=56798851.60906@intel.com \
--to=dave.hansen@intel.com \
--cc=akpm@linux-foundation.org \
--cc=cl@linux.com \
--cc=iamjoonsoo.kim@lge.com \
--cc=keescook@chromium.org \
--cc=kernel-hardening@lists.openwall.com \
--cc=laura@labbott.name \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=penberg@kernel.org \
--cc=rientjes@google.com \
/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.