From: Greg Ungerer <gregungerer@westnet.com.au>
To: David Howells <dhowells@redhat.com>,
Andy Lutomirski <luto@amacapital.net>
Cc: Josh Armour <jarmour@google.com>,
Greg KH <gregkh@linuxfoundation.org>,
"ksummit-discuss@lists.linuxfoundation.org"
<ksummit-discuss@lists.linuxfoundation.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: [Ksummit-discuss] security-related TODO items?
Date: Tue, 24 Jan 2017 09:26:03 +1000 [thread overview]
Message-ID: <811e58f6-0475-e9cd-f136-9a4504073df1@westnet.com.au> (raw)
In-Reply-To: <5024.1485203788@warthog.procyon.org.uk>
On 24/01/17 06:36, David Howells wrote:
> Andy Lutomirski <luto@amacapital.net> wrote:
[snip]
>>> (6) NOMMU could be particularly tricky. For ELF-FDPIC at least, the stack
>>> size is set in the binary. OTOH, you wouldn't have to relocate the
>>> pre-loader - you'd just mmap it MAP_PRIVATE and execute in place.
>>
>> For nommu, forget about it.
>
> Why? If you do that, you have to have bimodal binfmts. Note that the
> ELF-FDPIC binfmt, at least, can be used for both MMU and NOMMU environments.
> This may also be true of FLAT.
It is true for FLAT as well, they can run on both MMU an noMMU.
Regards
Greg
next prev parent reply other threads:[~2017-01-23 23:35 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-20 22:38 Kees Cook
2017-01-21 0:14 ` Andy Lutomirski
2017-01-21 0:26 ` Kees Cook
2017-01-21 1:10 ` Matthew Wilcox
2017-01-21 1:47 ` Josh Triplett
2017-01-23 10:02 ` Alexey Dobriyan
2017-01-23 10:48 ` David Howells
2017-01-23 20:10 ` Andy Lutomirski
[not found] ` <c1822e5b-9352-c1ab-ee98-e492ef6e156a@I-love.SAKURA.ne.jp>
2017-01-24 20:58 ` Andy Lutomirski
2017-01-23 20:36 ` David Howells
2017-01-23 20:59 ` Matthew Wilcox
2017-01-23 21:53 ` Andy Lutomirski
2017-01-23 23:26 ` Greg Ungerer [this message]
2017-01-23 20:15 ` Christoph Hellwig
2017-01-24 2:38 ` Andy Lutomirski
2017-01-24 10:03 ` Eric W. Biederman
2017-01-24 21:00 ` Andy Lutomirski
2017-01-24 21:55 ` Eric W. Biederman
2017-01-24 10:38 ` Alexey Dobriyan
[not found] ` <CAEiveUcTQK84qFNpYoET-cpSXJe0KYtnYQtp0uTPz=z0tc3W9A@mail.gmail.com>
2017-03-07 16:25 ` Andy Lutomirski
2017-02-02 21:12 ` David Howells
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