tree: https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-stable.git linux-4.19.y head: 551162c9bf51fda41d2d5ff5e2c5f70a5800cd5f commit: 73ce50dc2defcca646627630597dfe32bb8d3fdf [290/596] fscrypt: v2 encryption policy support config: x86_64-rhel (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce (this is a W=1 build): git checkout 73ce50dc2defcca646627630597dfe32bb8d3fdf # 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 >>, old ones prefixed by <<): fs/crypto/policy.c:25: warning: Function parameter or member 'policy1' not described in 'fscrypt_policies_equal' fs/crypto/policy.c:25: warning: Function parameter or member 'policy2' not described in 'fscrypt_policies_equal' fs/crypto/policy.c:44: warning: Function parameter or member 'policy_u' not described in 'fscrypt_supported_policy' fs/crypto/policy.c:44: warning: Function parameter or member 'inode' not described in 'fscrypt_supported_policy' fs/crypto/policy.c:109: warning: Function parameter or member 'ctx_u' not described in 'fscrypt_new_context_from_policy' fs/crypto/policy.c:109: warning: Function parameter or member 'policy_u' not described in 'fscrypt_new_context_from_policy' fs/crypto/policy.c:163: warning: Function parameter or member 'policy_u' not described in 'fscrypt_policy_from_context' fs/crypto/policy.c:163: warning: Function parameter or member 'ctx_u' not described in 'fscrypt_policy_from_context' fs/crypto/policy.c:163: warning: Function parameter or member 'ctx_size' not described in 'fscrypt_policy_from_context' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org