From 84c111f56b95bc4ef798970d5dc7d82f6cc76239 Mon Sep 17 00:00:00 2001
From: deraadt <deraadt@openbsd.org>
Date: Fri, 12 Nov 2021 05:23:49 +0000
Subject: [PATCH] aggressively pre-fill the pollfd array with fd=-1

---
 usr.bin/ssh/ssh-keyscan.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/usr.bin/ssh/ssh-keyscan.c b/usr.bin/ssh/ssh-keyscan.c
index 19e267b7c85..abde781f144 100644
--- a/usr.bin/ssh/ssh-keyscan.c
+++ b/usr.bin/ssh/ssh-keyscan.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh-keyscan.c,v 1.141 2021/11/11 15:32:32 deraadt Exp $ */
+/* $OpenBSD: ssh-keyscan.c,v 1.142 2021/11/12 05:23:49 deraadt Exp $ */
 /*
  * Copyright 1995, 1996 by David Mazieres <dm@lcs.mit.edu>.
  *
@@ -753,6 +753,8 @@ main(int argc, char **argv)
 		fdlim_set(maxfd);
 	fdcon = xcalloc(maxfd, sizeof(con));
 	read_wait = xcalloc(maxfd, sizeof(struct pollfd));
+	for (j = 0; j < maxfd; j++)
+		read_wait[j].fd = -1;
 
 	for (j = 0; j < fopt_count; j++) {
 		if (argv[j] == NULL)
-- 
2.20.1