tree: https://android.googlesource.com/kernel/common android-4.4-p head: 0875b76a11e991c1b5682261ed8fd82002ab7975 commit: 947341f3907b8d0827cc2aa3b9e53de776cb402e [19339/21527] BACKPORT: xfrm/compat: Add 64=>32-bit messages translator config: x86_64-randconfig-a015-20211118 (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce (this is a W=1 build): git remote add android-common https://android.googlesource.com/kernel/common git fetch --no-tags android-common android-4.4-p git checkout 947341f3907b8d0827cc2aa3b9e53de776cb402e # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): struct nlattr *__nla_reserve_64bit(struct sk_buff *skb, int attrtype, ^~~~~~~~~~~~~~~~~~~ vim +/__nla_reserve_64bit +126 net/xfrm/xfrm_compat.c 125 127 int attrlen, int padattr) 128 { 129 nla_align_64bit(skb, padattr); 130 131 return __nla_reserve(skb, attrtype, attrlen); 132 } 133 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org