ACPICA: Add error checks to prevent faults
Added additional error checking to prevent run-time faults.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/namespace/nsnames.c b/drivers/acpi/namespace/nsnames.c
index cbd94af..e14a141 100644
--- a/drivers/acpi/namespace/nsnames.c
+++ b/drivers/acpi/namespace/nsnames.c
@@ -180,6 +180,12 @@
next_node = node;
while (next_node && (next_node != acpi_gbl_root_node)) {
+ if (ACPI_GET_DESCRIPTOR_TYPE(next_node) != ACPI_DESC_TYPE_NAMED) {
+ ACPI_ERROR((AE_INFO,
+ "Invalid NS Node (%X) while traversing path",
+ next_node));
+ return 0;
+ }
size += ACPI_PATH_SEGMENT_LENGTH;
next_node = acpi_ns_get_parent_node(next_node);
}