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x86/acpi: Fix incorrect sanity check in acpi_register_lapic()
author
Tang Chen
<tangchen@cn.fujitsu.com>
Tue, 23 Jul 2013 08:00:19 +0000
(16:00 +0800)
committer
Ingo Molnar
<mingo@kernel.org>
Tue, 23 Jul 2013 08:08:16 +0000
(10:08 +0200)
We wanted to check if the APIC ID is out of range. It should be:
if (id >= MAX_LOCAL_APIC)
There's no known bad effect of this bug.
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Cc: pavel@ucw.cz
Cc: rjw@sisk.pl
Link:
http://lkml.kernel.org/r/1374566419-21120-1-git-send-email-tangchen@cn.fujitsu.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/kernel/acpi/boot.c
patch
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diff --git
a/arch/x86/kernel/acpi/boot.c
b/arch/x86/kernel/acpi/boot.c
index
2627a81
..
872a2d2
100644
(file)
--- a/
arch/x86/kernel/acpi/boot.c
+++ b/
arch/x86/kernel/acpi/boot.c
@@
-199,7
+199,7
@@
static void acpi_register_lapic(int id, u8 enabled)
{
unsigned int ver = 0;
- if (id >=
(MAX_LOCAL_APIC-1)
) {
+ if (id >=
MAX_LOCAL_APIC
) {
printk(KERN_INFO PREFIX "skipped apicid that is too big\n");
return;
}