linux-kernel - Re: [patch 0/4] MAP_NOZERO v2 - VM_NOZERO/MAP

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 28 Jun 2007 22:09:58 -0700
From:	"Ulrich Drepper" <drepper@...il.com>
To:	"Rik van Riel" <riel@...hat.com>
Cc:	"Kyle Moffett" <mrmacman_g4@....com>,
	"Davide Libenzi" <davidel@...ilserver.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Andy Isaacson" <adi@...apodia.org>
Subject: Re: [patch 0/4] MAP_NOZERO v2 - VM_NOZERO/MAP_NOZERO early summer madness

On 6/28/07, Rik van Riel <riel@...hat.com> wrote:
> That wants MAP_PRIVATE so that the kernel can also decide to not
> swap these pages out to an unencrypted swap area.

That's not what MAP_PRIVATE means.  MAP_PRIVATE is the opposite of
MAP_SHARED.  It's meaningless for anonymous memory (which is what
ssh-agent etc would use) and for file-backed data it definitely allows
swapping unless you use mlock().
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/