[rfc -tip 2/4] x86,e820: __e820_add_region -- guard against array overflowed

[Cyrill Gorcunov]

Better to be paranoid against unpredicted nr_map modifications.

Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
---
 arch/x86/kernel/e820.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.git/arch/x86/kernel/e820.c
=====================================================================
--- linux-2.6.git.orig/arch/x86/kernel/e820.c
+++ linux-2.6.git/arch/x86/kernel/e820.c
@@ -115,7 +115,7 @@ static void __init __e820_add_region(str
 {
 	int x = e820x->nr_map;
 
-	if (x == ARRAY_SIZE(e820x->map)) {
+	if (x >= ARRAY_SIZE(e820x->map)) {
 		printk(KERN_ERR "Ooops! Too many entries in the memory map!\n");
 		return;
 	}

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