Commit 82982d72 authored Jul 23, 2013 by Tang Chen Committed by Ingo Molnar Jul 23, 2013

x86/acpi: Fix incorrect sanity check in acpi_register_lapic()



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>

parent b3a3a9c4

arch/x86/kernel/acpi/boot.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;
		}