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Date: Thu, 07 Apr 2016 00:41:46 +0200
From: Paul Bolle <pebolle@...cali.nl>
To: Kees Cook <keescook@...omium.org>, "Rafael J. Wysocki"
<rafael@...nel.org>
Cc: Ingo Molnar <mingo@...nel.org>, Linus Torvalds
<torvalds@...ux-foundation.org>, Ard Biesheuvel
<ard.biesheuvel@...aro.org>, Matt Redfearn <matt.redfearn@...tec.com>,
Yves-Alexis Perez <corsac@...ian.org>, Emrah Demir <ed@...sec.com>,
Jonathan Corbet <corbet@....net>, "x86@...nel.org" <x86@...nel.org>,
"Rafael J. Wysocki" <rjw@...ysocki.net>, Len Brown <len.brown@...el.com>,
Pavel Machek <pavel@....cz>, Borislav Petkov <bp@...e.de>, Andy Lutomirski
<luto@...nel.org>, "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>, Linux Kernel Mailing
List <linux-kernel@...r.kernel.org>, "kernel-hardening@...ts.openwall.com"
<kernel-hardening@...ts.openwall.com>
Subject: Re: [PATCH] Prefer kASLR over Hibernation
On wo, 2016-04-06 at 15:16 -0700, Kees Cook wrote:
> And it seems like Fedora either doesn't either, or has a lot of people
> for whom it doesn't work:
> https://bugzilla.redhat.com/show_bug.cgi?id=1206936
> https://bugzilla.redhat.com/show_bug.cgi?id=1224151
> http://blog.kriptonium.com/2015/12/fedora-23-hibernate.html
Which are all variations on a theme: add "resume=$SWAP" to your kernel
commandline, aren't they?
(No idea why that's needed since Fedora 22, but it cost me quite a bit
of head scratching to find out.)
Once that parameter was set hibernate functioned again on the few
laptops I, well, manage that run Fedora 22.
Thanks,
Paul Bolle
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