linux-kernel - Re: [kernel-hardening] Re: [PATCH] KERNEL: resource: Fix bug on leakage in /proc/iomem file

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Message-ID: <CA+55aFxM2gWkV26ppU5hLh=s541Qx5yecbRySxDGKa1VP7NG=g@mail.gmail.com>
Date:	Wed, 6 Apr 2016 12:02:25 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Yves-Alexis Perez <corsac@...ian.org>
Cc:	"kernel-hardening@...ts.openwall.com" 
	<kernel-hardening@...ts.openwall.com>,
	Kees Cook <keescook@...omium.org>, Emrah Demir <ed@...sec.com>,
	Dan Rosenberg <dan.j.rosenberg@...il.com>,
	Dave Jones <davej@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [kernel-hardening] Re: [PATCH] KERNEL: resource: Fix bug on
 leakage in /proc/iomem file

On Wed, Apr 6, 2016 at 11:53 AM, Yves-Alexis Perez <corsac@...ian.org> wrote:
>
> Actually you just have to have a swap partition, which people still set as
> more or less the ram size, I think, so all in all it works (especially if
> people hibernate without the ram completely used).

I guess people still do those. I have one on my laptop, but that's
because I only have 4GB of RAM in that thing. I'd never hibernate it,
though. If I can't just get it back from suspend immediately, I'd
rather just boot it from scratch.

On bigger machines where I have 16GB or more, I tend to go "I'd rather
fail early and perhaps buy more RAM than see the slowdown or write to
my precious ssd". I guess I might have a swap partition just because a
distro did one for me and I didn't catch it.

So yeah, maybe swap partitions are still more common than I thought.
And I didn't even consider the possibility that people would hibernate
a desktop like you do.

             Linus