Re: 4.8-rc1: resume from hibernation doesn't work

From: Jiri Kosina
Date: Tue Aug 09 2016 - 16:13:46 EST


On Mon, 8 Aug 2016, Pavel Machek wrote:

> 64-bit kernel, I assume?
>
> I believe that is known:
>
> From: "Rafael J. Wysocki" <rafael@xxxxxxxxxx>
> To: Thomas Garnier <thgarnie@xxxxxxxxxx>
> Cc: "Rafael J. Wysocki" <rafael@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxx>, "Rafael J. Wysocki"
> <rjw@xxxxxxxxxxxxx>, Linux PM list <linux-pm@xxxxxxxxxxxxxxx>, the arch/x86 maintainers
> <x86@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Yinghai Lu
> <yinghai@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar
> <mingo@xxxxxxxxxx>, "H . Peter Anvin" <hpa@xxxxxxxxx>, Kees Cook <keescook@xxxxxxxxxxxx>,
> Pavel Machek <pavel@xxxxxx>, Kernel Hardening <kernel-hardening@xxxxxxxxxxxxxxxxxx>,
> Borislav Petkov <bpetkov@xxxxxxx>
> Subject: Re: [Resend][PATCH] x86/power/64: Always create temporary identity mapping correctly

Yeah, I've noticed that thread in the meantime and everything is happening
there now, thanks.

> >>>> Suggested-by: Yinghai Lu <yinghai@xxxxxxxxxx>
> >>>> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> >>>> Acked-by: Yinghai Lu <yinghai@xxxxxxxxxx>
> >>>> ---
> >>>>
> >>>> 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.

Unfortunately it doesn't fix the issue.

--
Jiri Kosina
SUSE Labs