Merge branch 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-2.6

* 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-2.6:
  ACPI: Fix thermal shutdowns
  ACPI: bounds check IRQ to prevent memory corruption
  ACPI: Avoid bogus EC timeout when EC is in Polling mode
  ACPI : Add the EC dmi table to fix the incorrect ECDT table
  ACPI: Properly clear flags on false-positives and send uevent on sudden unplug
  acpi: trivial cleanups
  acer-wmi: Fix wireless and bluetooth on early AMW0 v2 laptops
  ACPI: WMI: Set instance for query block calls
  ACPICA: Additional error checking for pathname utilities
  ACPICA: Fix possible memory leak in Unload() operator
  ACPICA: Fix memory leak when deleting thermal/processor objects

1 files changed, 9 insertions, 4 deletions

diff --git a/drivers/acpi/utilities/utobject.c b/drivers/acpi/utilities/utobject.c
index e25484495e65..916eff399eb3 100644
--- a/drivers/acpi/utilities/utobject.c
+++ b/drivers/acpi/utilities/utobject.c
@@ -425,6 +425,7 @@ acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object,
                                acpi_size * obj_length)
 {
         acpi_size length;
+        acpi_size size;
         acpi_status status = AE_OK;
 
         ACPI_FUNCTION_TRACE_PTR(ut_get_simple_object_size, internal_object);
@@ -484,10 +485,14 @@ acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object,
                          * Get the actual length of the full pathname to this object.
                          * The reference will be converted to the pathname to the object
                          */
-                        length +=
-                            ACPI_ROUND_UP_TO_NATIVE_WORD
-                            (acpi_ns_get_pathname_length
-                             (internal_object->reference.node));
+                        size =
+                            acpi_ns_get_pathname_length(internal_object->
+                                                        reference.node);
+                        if (!size) {
+                                return_ACPI_STATUS(AE_BAD_PARAMETER);
+                        }
+
+                        length += ACPI_ROUND_UP_TO_NATIVE_WORD(size);
                         break;
 
                 default: