In ramoops_register_dummy() dummy_data is allocated via kzalloc() then it will always occupy the heap space after register platform device via platform_device_register_data(), but it will not be used any more. So let's free it for system usage, replace it with stack memory is better due to small size. Signed-off-by: Yue Hu <huyue2@yulong.com> [kees: add required memset and adjust sizeof() argument] Signed-off-by: Kees Cook <keescook@chromium.org>