Commit 5051fd69 authored Aug 24, 2009 by Cyrill Gorcunov Committed by Ingo Molnar Aug 26, 2009

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



Better to be paranoid against unpredicted nr_map modifications.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
LKML-Reference: <20090824175551.146070377@openvz.org>
Signed-off-by: Ingo 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;
		}