Commit 65e4b9b0 authored by Fiodor Suietov's avatar Fiodor Suietov Committed by Len Brown

ACPICA: Fix for possible memory leak and fault.

Fixed a possible memory leak and fault in acpi_ex_resolve_object_to_value()
during a read from a buffer or region field. (BZ 458)
Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
Signed-off-by: default avatarAlexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 867c9aec
......@@ -141,7 +141,7 @@ acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr,
acpi_status status = AE_OK;
union acpi_operand_object *stack_desc;
void *temp_node;
union acpi_operand_object *obj_desc;
union acpi_operand_object *obj_desc = NULL;
u16 opcode;
ACPI_FUNCTION_TRACE(ex_resolve_object_to_value);
......@@ -299,8 +299,6 @@ acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr,
status = acpi_ds_get_package_arguments(stack_desc);
break;
/* These cases may never happen here, but just in case.. */
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
......@@ -314,6 +312,10 @@ acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr,
status =
acpi_ex_read_data_from_field(walk_state, stack_desc,
&obj_desc);
/* Remove a reference to the original operand, then override */
acpi_ut_remove_reference(*stack_ptr);
*stack_ptr = (void *)obj_desc;
break;
......
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