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 <yinghai.lu@sun.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Gary Hade <gary.hade@us.ibm.com> Cc: Len Brown <lenb@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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@ -77,6 +77,9 @@ count_resource(struct acpi_resource *acpi_res, void *data)
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struct acpi_resource_address64 addr;
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struct acpi_resource_address64 addr;
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acpi_status status;
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acpi_status status;
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if (info->res_num >= PCI_BUS_NUM_RESOURCES)
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return AE_OK;
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status = resource_to_addr(acpi_res, &addr);
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status = resource_to_addr(acpi_res, &addr);
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if (ACPI_SUCCESS(status))
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if (ACPI_SUCCESS(status))
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info->res_num++;
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info->res_num++;
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@ -93,6 +96,9 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
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unsigned long flags;
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unsigned long flags;
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struct resource *root;
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struct resource *root;
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if (info->res_num >= PCI_BUS_NUM_RESOURCES)
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return AE_OK;
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status = resource_to_addr(acpi_res, &addr);
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status = resource_to_addr(acpi_res, &addr);
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if (!ACPI_SUCCESS(status))
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if (!ACPI_SUCCESS(status))
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return AE_OK;
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return AE_OK;
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