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Add a small additional check for the validity of the GAS register.

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This commit is contained in:
jruoho 2010-08-11 13:02:59 +00:00
parent 65028c6bf3
commit 33733d6120
1 changed files with 7 additions and 2 deletions
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9
sys/dev/acpi/acpi_cpu_pstate.c
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@ -1,4 +1,4 @@
/* $NetBSD: acpi_cpu_pstate.c,v 1.9 2010/08/11 11:48:21 jruoho Exp $ */
/* $NetBSD: acpi_cpu_pstate.c,v 1.10 2010/08/11 13:02:59 jruoho Exp $ */
/*-
* Copyright (c) 2010 Jukka Ruohonen <jruohonen@iki.fi>
@ -27,7 +27,7 @@
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: acpi_cpu_pstate.c,v 1.9 2010/08/11 11:48:21 jruoho Exp $");
__KERNEL_RCSID(0, "$NetBSD: acpi_cpu_pstate.c,v 1.10 2010/08/11 13:02:59 jruoho Exp $");
#include <sys/param.h>
#include <sys/evcnt.h>
@ -426,6 +426,11 @@ acpicpu_pstate_pct(struct acpicpu_softc *sc)
width = reg[i]->reg_bitwidth;
if (width + reg[i]->reg_bitoffset > 32) {
rv = AE_AML_BAD_RESOURCE_VALUE;
goto out;
}
if (width != 8 && width != 16 && width != 32) {
rv = AE_AML_BAD_RESOURCE_VALUE;
goto out;