linux-kernel - Re: [Resend][PATCH] x86/power/64: Always create temporary identity mapping correctly

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Message-ID: <CAJZ5v0iBMt6=39Rdm3gN606bB+6Ctv7a_XPaKScMcnFuhucRwA@mail.gmail.com>
Date:	Tue, 9 Aug 2016 13:47:34 +0200
From:	"Rafael J. Wysocki" <rafael@...nel.org>
To:	Borislav Petkov <bp@...e.de>, Thomas Garnier <thgarnie@...gle.com>
Cc:	"Rafael J. Wysocki" <rafael@...nel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Linux PM list <linux-pm@...r.kernel.org>,
	"the arch/x86 maintainers" <x86@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H . Peter Anvin" <hpa@...or.com>,
	Kees Cook <keescook@...omium.org>, Pavel Machek <pavel@....cz>,
	Kernel Hardening <kernel-hardening@...ts.openwall.com>
Subject: Re: [Resend][PATCH] x86/power/64: Always create temporary identity
 mapping correctly

On Tue, Aug 9, 2016 at 9:02 AM, Borislav Petkov <bp@...e.de> wrote:
> On Mon, Aug 08, 2016 at 03:54:48PM +0200, Rafael J. Wysocki wrote:
>> That should be the only one on top of plain 4.8-rc1.
>>
>> If it doesn't help, we need more work to do. :-)
>
> Yes, we do.
>
> The machine triple-faults *after* reading up the hibernation image.
> It hits 100%, then tries to switch to the boot kernel and BOOM, BIOS
> screen.
>
> I'm attaching the .config in case you want to reproduce it. The machine
> is an IVB thinkpad x230.

Yes, I'm going to try to reproduce it.

I'm wondering what the difference between your .config and the Thomas'
.config is, as he has CONFIG_RANDOMIZE_MEMORY=y set too.

Thomas, can you attach your .config, please?

Thanks,
Rafael