linux-kernel - [PATCH] x86: Fix calculation of size of numa

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Message-ID: <20110225145759.GA1606@sgi.com>
Date:	Fri, 25 Feb 2011 08:57:59 -0600
From:	Jack Steiner <steiner@....com>
To:	yinghai@...nel.org, mingo@...e.hu, tglx@...utronix.de
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] x86: Fix calculation of size of numa_distance

Fix the calculation of the size of numa_distance array. It is 2-dimemsional
array. This fixes early panics seen on large numa systems.

Signed-off-by: Jack Steiner <steiner@....com>

Index: linux/arch/x86/mm/numa_64.c
===================================================================
--- linux.orig/arch/x86/mm/numa_64.c	2011-02-23 17:46:38.000000000 -0600
+++ linux/arch/x86/mm/numa_64.c	2011-02-25 08:53:45.781921592 -0600
@@ -414,7 +414,8 @@ static int __init numa_alloc_distance(vo
 
 	for_each_node_mask(i, nodes_parsed)
 		cnt = i;
-	size = ++cnt * sizeof(numa_distance[0]);
+	cnt++;
+	size = cnt * cnt * sizeof(numa_distance[0]);
 
 	phys = memblock_find_in_range(0, (u64)max_pfn_mapped << PAGE_SHIFT,
 				      size, PAGE_SIZE);
--
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