diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 01708a165368..292de3cab9cc 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -288,13 +288,12 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context)
 	}
 out_success:
 	context->ret.length = out_obj->buffer.length;
-	context->ret.pointer = kmalloc(context->ret.length, GFP_KERNEL);
+	context->ret.pointer = kmemdup(out_obj->buffer.pointer,
+				       context->ret.length, GFP_KERNEL);
 	if (!context->ret.pointer) {
 		status =  AE_NO_MEMORY;
 		goto out_kfree;
 	}
-	memcpy(context->ret.pointer, out_obj->buffer.pointer,
-		context->ret.length);
 	status =  AE_OK;
 
 out_kfree: