From: David S. Miller <davem@davemloft.net>
Date: Thu, 14 Aug 2008 08:41:39 +0000 (-0700)
Subject: sparc64: Fix overshoot in nid_range().
X-Git-Tag: v2.6.27-rc4~45^2~2
X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=c918dcce92f76bb9903e4d049f4780bad384c207;p=linux-2.6-omap-h63xx.git

sparc64: Fix overshoot in nid_range().

If 'start' does not begin on a page boundary, we can overshoot
past 'end'.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 217de3ea29e..64d8e7623e0 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -796,6 +796,9 @@ static unsigned long nid_range(unsigned long start, unsigned long end,
 		start += PAGE_SIZE;
 	}
 
+	if (start > end)
+		start = end;
+
 	return start;
 }
 #else