From 1d0059f3a468825b5fc5405c636a2f6e02707ffa Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Wed, 26 Sep 2012 10:09:50 +0100
Subject: MODSIGN: Add FIPS policy

If we're in FIPS mode, we should panic if we fail to verify the signature on a
module or we're asked to load an unsigned module in signature enforcing mode.
Possibly FIPS mode should automatically enable enforcing mode.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 kernel/module.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kernel/module.c b/kernel/module.c
index 68c564edb2c1..0e2da8695f8e 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -58,6 +58,7 @@
 #include <linux/jump_label.h>
 #include <linux/pfn.h>
 #include <linux/bsearch.h>
+#include <linux/fips.h>
 #include "module-internal.h"
 
 #define CREATE_TRACE_POINTS
@@ -2447,6 +2448,9 @@ static int module_sig_check(struct load_info *info,
 	}
 
 	/* Not having a signature is only an error if we're strict. */
+	if (err < 0 && fips_enabled)
+		panic("Module verification failed with error %d in FIPS mode\n",
+		      err);
 	if (err == -ENOKEY && !sig_enforce)
 		err = 0;
 
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