Commit 5051fd69 authored by Cyrill Gorcunov's avatar Cyrill Gorcunov Committed by Ingo Molnar
Browse files

x86, e820: Guard against array overflowed in __e820_add_region() 



Better to be paranoid against unpredicted nr_map modifications.

Signed-off-by: default avatarCyrill Gorcunov <gorcunov@openvz.org>
LKML-Reference: <20090824175551.146070377@openvz.org>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 2495fbf7

arch/x86/kernel/e820.c

+1 −1
Original line number Diff line number Diff line
@@ -115,7 +115,7 @@ static void __init __e820_add_region(struct e820map *e820x, u64 start, u64 size, 
{

	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;

	}