linux-kernel - Re: [PATCH v3 1/7] x86, kaslr: Use init_size instead of run

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]

Message-ID: <CAE9FiQVEaeWZ2oggks8_jbS+dObZJLq7aEo9cFEqJNtOhWTNRw@mail.gmail.com>
Date:	Mon, 9 Mar 2015 13:06:00 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Borislav Petkov <bp@...e.de>
Cc:	Matt Fleming <matt.fleming@...el.com>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
	Kees Cook <keescook@...omium.org>, Baoquan He <bhe@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jiri Kosina <jkosina@...e.cz>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	Josh Triplett <josh@...htriplett.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	Junjie Mao <eternal.n08@...il.com>
Subject: Re: [PATCH v3 1/7] x86, kaslr: Use init_size instead of run_size

On Mon, Mar 9, 2015 at 1:00 PM, Borislav Petkov <bp@...e.de> wrote:
> On Mon, Mar 09, 2015 at 12:35:25PM -0700, Yinghai Lu wrote:
>> Can you put back:
>> "
>> So need to make sure [z_extra_offset, init_size) will fit ZO, that means
>> init_size need to be adjusted according to ZO size.
>> That make init_size is always >= run_size.
>
> Why?
>
> We don't adjust init_size. We assign INIT_SIZE to it. Or do you want to
> say that we indirectly adjust init_size through INIT_SIZE?

Yes. Just to emphasize that  " We need to make sure [z_extra_offset,
init_size) will fit ZO"
--
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/