Re: [PATCH 09/27] hibernate: Disable when the kernel is locked down
From: Pavel Machek <hidden>
Date: 2019-03-19 22:15:08
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On Thu 2019-02-28 15:11:45, Matthew Garrett wrote:
From: Josh Boyer <redacted> 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 <redacted> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: "Lee, Chun-Yi" <jlee@suse.com> cc: linux-pm@vger.kernel.org
It would be good to cc hibernation maintainers here.
quoted hunk ↗ jump to hunk
--- 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 abef759de7c8..802795becb88 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"); } /**
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