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>
Gbp-Pq: Topic features/all/lockdown
Gbp-Pq: Name 0047-hibernate-Disable-when-the-kernel-is-locked-down.patch

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index a5c36e9c56a670c59cabe20376f2ce1aedcd5e8a..939448a4832992f59e6f94f8362545555e829f15 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();
 }
 
 /**