oops, the fallback stack protector code must handle 64-bit guards

spotted by kettenis

diff --git a/sys/kern/init_main.c b/sys/kern/init_main.c
index 703727b..01061f8 100644 (file)
--- a/sys/kern/init_main.c
+++ b/sys/kern/init_main.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: init_main.c,v 1.195 2013/12/28 03:22:52 deraadt Exp $ */
+/*     $OpenBSD: init_main.c,v 1.196 2013/12/28 20:52:48 deraadt Exp $ */
 /*     $NetBSD: init_main.c,v 1.84.4.1 1996/06/02 09:08:06 mrg Exp $   */
 
 /*
@@ -415,7 +415,7 @@ main(void *framep)
        if (__guard_local == 0) {
                volatile long newguard;
 
-               newguard = arc4random();
+               arc4random_buf((void *)&newguard, sizeof newguard);
                __guard_local = newguard;
        }
 #endif