[PATCH] x86: check boundary in count/setup_resource called by get_current_resources
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 resutrn too many resource entries.
Signed-off-by: Yinghai Lu <[email protected]>
Index: linux-2.6/arch/x86/pci/acpi.c
===================================================================
--- linux-2.6.orig/arch/x86/pci/acpi.c
+++ linux-2.6/arch/x86/pci/acpi.c
@@ -77,9 +77,13 @@ count_resource(struct acpi_resource *acp
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++;
+
return AE_OK;
}
@@ -93,6 +97,9 @@ setup_resource(struct acpi_resource *acp
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;
-
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