From b30356b6341e44951a929ded0a50e3543f344e6b Mon Sep 17 00:00:00 2001
From: emaste <emaste@FreeBSD.org>
Date: Wed, 13 Aug 2008 17:32:48 +0000
Subject: Fix REDZONE(9) on amd64 and perhaps other 64 bit targets -- ensure
 the space that redzone adds to the allocation for storing its metadata is at
 least as large as the metadata that it will store there.

Submitted by:	Nima Misaghian
---
 sys/vm/redzone.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'sys/vm')

diff --git a/sys/vm/redzone.c b/sys/vm/redzone.c
index b3e5c88..fc4d955 100644
--- a/sys/vm/redzone.c
+++ b/sys/vm/redzone.c
@@ -54,6 +54,8 @@ static u_long
 redzone_roundup(u_long n)
 {
 
+	if (n < REDZONE_HSIZE)
+		n = REDZONE_HSIZE;
 	if (n <= 128)
 		return (128);
 	else if (n <= 256)
-- 
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