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| author | Josh Boyer <jwboyer@fedoraproject.org> | 2019-08-19 17:17:46 -0700 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2019-08-19 21:54:15 -0700 |
| commit | 38bd94b8a1bd46e6d3d9718c7ff582e4c8ccb440 (patch) | |
| tree | 72595e412734b2f3642514c01b06e9202b94ce76 /kernel/power | |
| parent | 155bdd30af17e90941589b5db4dab9a29b28c112 (diff) | |
| download | lwn-38bd94b8a1bd46e6d3d9718c7ff582e4c8ccb440.tar.gz lwn-38bd94b8a1bd46e6d3d9718c7ff582e4c8ccb440.zip | |
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>
Signed-off-by: Matthew Garrett <mjg59@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: rjw@rjwysocki.net
Cc: pavel@ucw.cz
cc: linux-pm@vger.kernel.org
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/hibernate.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index cd7434e6000d..3c0a5a8170b0 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -30,6 +30,7 @@ #include <linux/ctype.h> #include <linux/genhd.h> #include <linux/ktime.h> +#include <linux/security.h> #include <trace/events/power.h> #include "power.h" @@ -68,7 +69,7 @@ static const struct platform_hibernation_ops *hibernation_ops; bool hibernation_available(void) { - return (nohibernate == 0); + return nohibernate == 0 && !security_locked_down(LOCKDOWN_HIBERNATION); } /** |