ACPICA: Additional error checking for pathname utilities

[mirror_ubuntu-bionic-kernel.git] / drivers / acpi / resources / rscalc.c

diff --git a/drivers/acpi/resources/rscalc.c b/drivers/acpi/resources/rscalc.c
index f61ebc679e6645514525a1f5d632c87acbdfd751..d9063ea414e33d2cda60a796dd97eb41379cb1d0 100644 (file)
--- a/drivers/acpi/resources/rscalc.c
+++ b/drivers/acpi/resources/rscalc.c
@@ -587,6 +587,9 @@ acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object,
                        } else {
                                temp_size_needed +=
                                    acpi_ns_get_pathname_length((*sub_object_list)->reference.node);
+                               if (!temp_size_needed) {
+                                       return_ACPI_STATUS(AE_BAD_PARAMETER);
+                               }
                        }
                } else {
                        /*