On Tue 2016-08-09 10:54:15, Jiri Kosina wrote:
> On Tue, 9 Aug 2016, Jiri Kosina wrote:
>
> > current Linus' tree (HEAD 65ea11ec6, so basically 4.8-rc1+) has broken
> > resume from hibernation on my x200s.
> >
> > Suspend works correctly, resuming proceeds up to the point where it
> > reports 100% of reading of the hibernation image, and afterwards the
> > machine reboots (tripple fault ... dunno, I don't really see any kernel
> > messages between the report of reading the hibernation image and reboot).
> >
> > 4.7-rc4 is fine on this machine, so I thought I'd bisect it, but
> > unfortunately at some point in the bisection process, the hibernation
> > itself breaks, so there is not really a way for me to bisect it.
> >
> > Any ideas which patches to try to revert?
>
> Okay, turning off CONFIG_RANDOMIZE_MEMORY makes the problem go away and
> machine resumes properly (and yes, I am running a kernel that already
> contains c226fab474).
>
> Adding Thomas Garnier to CC as well.
64-bit kernel, I assume?
I believe that is known:
From: "Rafael J. Wysocki" <raf...@kernel.org>
To: Thomas Garnier <thgar...@google.com>
Cc: "Rafael J. Wysocki" <raf...@kernel.org>, Borislav Petkov <b...@suse.de>,
"Rafael J. Wysocki"
<r...@rjwysocki.net>, Linux PM list <linux...@vger.kernel.org>, the
arch/x86 maintainers
<x...@kernel.org>, Linux Kernel Mailing List
<linux-kernel@vger.kernel.org>, Yinghai Lu
<ying...@kernel.org>, Thomas Gleixner <t...@linutronix.de>, Ingo Molnar
<mi...@redhat.com>, "H . Peter Anvin" <h...@zytor.com>, Kees Cook
<keesc...@chromium.org>,
Pavel Machek <pa...@ucw.cz>, Kernel Hardening
<kernel-harden...@lists.openwall.com>,
Borislav Petkov <bpet...@suse.de>
Subject: Re: [Resend][PATCH] x86/power/64: Always create temporary identity
mapping correctly
...
>>>> Suggested-by: Yinghai Lu <ying...@kernel.org>
>>>> Signed-off-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
>>>> Acked-by: Yinghai Lu <ying...@kernel.org>
>>>> ---
>>>>
>>>> This is sort of urgent, because hibernation doesn't work with KASLR on
>>>> x86-64
>>>> in 4.8-rc1 AFAICS and this should make them work together again.
>>>>
>>>> Unless anyone sees any problems with it, I'll queue it up for 4.8-rc2.
>>>>
>>>> Thomas, would it be possible to test it with KASLR enabled, please?
So yes, testing the patch from that thread would be helpful.
Thanks,
Pavel
--
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