UBUNTU: SAUCE: (efi-lockdown) hibernate: Disable when the kernel is locked down

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 <jwboyer@fedoraproject.org>
Signed-off-by: David Howells <dhowells@redhat.com>
(cherry picked from commit 693ea9dae1c8724abb2d37648ee2ded900de0ceb
 git://git.kernel.org/pub/scm/linux/kernel/git/jwboyer/fedora.git)
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index e1914c7b85b180e7683eed48738e14443dbadc62..7859ba79e1813dd8c02b01f6f7826d92977fd758 100644 (file)
--- 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();
 }
 
 /**