1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/acpi/namespace/nsnames.c b/drivers/acpi/namespace/nsnames.c
index cffef1bcbdbc..549db42f16cf 100644
--- a/drivers/acpi/namespace/nsnames.c
+++ b/drivers/acpi/namespace/nsnames.c
@@ -137,6 +137,10 @@ char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node)
         /* Calculate required buffer size based on depth below root */
 
         size = acpi_ns_get_pathname_length(node);
+        if (!size) {
+                ACPI_ERROR((AE_INFO, "Invalid node failure"));
+                return_PTR(NULL);
+        }
 
         /* Allocate a buffer to be returned to caller */
 
@@ -229,6 +233,10 @@ acpi_ns_handle_to_pathname(acpi_handle target_handle,
         /* Determine size required for the caller buffer */
 
         required_size = acpi_ns_get_pathname_length(node);
+        if (!required_size) {
+                ACPI_ERROR((AE_INFO, "Invalid node failure"));
+                return_ACPI_STATUS(AE_ERROR);
+        }
 
         /* Validate/Allocate/Clear caller buffer */