From mboxrd@z Thu Jan 1 00:00:00 1970 From: joeyli Subject: Re: [PATCH 08/27] hibernate: Disable when the kernel is locked down Date: Fri, 20 Oct 2017 14:40:33 +0800 Message-ID: <20171020064033.GP3285@linux-l9pv.suse> References: <150842463163.7923.11081723749106843698.stgit@warthog.procyon.org.uk> <150842469486.7923.10376463083069013490.stgit@warthog.procyon.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <150842469486.7923.10376463083069013490.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org> Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: David Howells Cc: linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, gnomes-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org, linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, matthew.garrett-05XSO3Yj/JvQT0dZR+AlfA@public.gmane.org, gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, jforbes-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org List-Id: linux-efi@vger.kernel.org On Thu, Oct 19, 2017 at 03:51:34PM +0100, David Howells wrote: > From: Josh Boyer > > There is currently no way to verify the resume image when returning > from hibernate. This might compromise the signed modules trust model, > so until we can work with signed hibernate images we disable it when the > kernel is locked down. > > Signed-off-by: Josh Boyer > Signed-off-by: David Howells > cc: linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org I have reviewed and tested this patch. Please feel free to add: Reviewed-by: "Lee, Chun-Yi" Thanks a lot! Joey Lee > --- > > kernel/power/hibernate.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c > index a5c36e9c56a6..f2eafefeec50 100644 > --- a/kernel/power/hibernate.c > +++ b/kernel/power/hibernate.c > @@ -70,7 +70,7 @@ static const struct platform_hibernation_ops *hibernation_ops; > > bool hibernation_available(void) > { > - return (nohibernate == 0); > + return nohibernate == 0 && !kernel_is_locked_down("Hibernation"); > } > > /** > > -- > To unsubscribe from this list: send the line "unsubscribe linux-efi" in > the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org > More majordomo info at http://vger.kernel.org/majordomo-info.html