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

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
......@@ -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;
}
......
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