From 3d9befd2cdf65b1768b0d3078a65cc0ae9aa6412 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Sat, 17 Nov 2007 16:27:01 +0100 Subject: [PATCH] x86: check boundary in count setup resource need to check info->res_num less than PCI_BUS_NUM_RESOURCES, so info->bus->resource[info->res_num] = res will not beyond of bus resource array when acpi returns too many resource entries. Signed-off-by: Yinghai Lu Cc: Greg Kroah-Hartman Cc: Gary Hade Cc: Len Brown Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Thomas Gleixner --- arch/x86/pci/acpi.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index 2d88f7c6d6..7e35078673 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -77,6 +77,9 @@ count_resource(struct acpi_resource *acpi_res, void *data) struct acpi_resource_address64 addr; acpi_status status; + if (info->res_num >= PCI_BUS_NUM_RESOURCES) + return AE_OK; + status = resource_to_addr(acpi_res, &addr); if (ACPI_SUCCESS(status)) info->res_num++; @@ -93,6 +96,9 @@ setup_resource(struct acpi_resource *acpi_res, void *data) unsigned long flags; struct resource *root; + if (info->res_num >= PCI_BUS_NUM_RESOURCES) + return AE_OK; + status = resource_to_addr(acpi_res, &addr); if (!ACPI_SUCCESS(status)) return AE_OK; -- 2.39.5