Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index eba55b7d6c95..44ea60cf21c0 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -407,6 +407,12 @@ acpi_evaluate_reference(acpi_handle handle,
                         break;
                 }
 
+                if (!element->reference.handle) {
+                        printk(KERN_WARNING PREFIX "Invalid reference in"
+                               " package %s\n", pathname);
+                        status = AE_NULL_ENTRY;
+                        break;
+                }
                 /* Get the  acpi_handle. */
 
                 list->handles[i] = element->reference.handle;