[kbuild-all] [f2fs-stable:linux-4.19.y 468/596] fs/crypto/fname.o: warning: objtool: fscrypt_do_sha256()+0xbb: sibling call from callable instruction with modified stack frame

tree: https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-stable.git linux-4.19.y head: 551162c9bf51fda41d2d5ff5e2c5f70a5800cd5f commit: 86eb43f574e090ecb3a2ca7366f4c74bd6ab3df2 [468/596] fscrypt: improve format of no-key names 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 86eb43f574e090ecb3a2ca7366f4c74bd6ab3df2 # 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/fname.c:55: warning: Function parameter or member 'dirhash' not described in 'fscrypt_nokey_name' fs/crypto/fname.c:55: warning: Function parameter or member 'bytes' not described in 'fscrypt_nokey_name' fs/crypto/fname.c:55: warning: Function parameter or member 'sha256' not described in 'fscrypt_nokey_name' fs/crypto/fname.c:117: warning: Function parameter or member 'inode' not described in 'fscrypt_fname_encrypt' fs/crypto/fname.c:117: warning: Function parameter or member 'iname' not described in 'fscrypt_fname_encrypt' fs/crypto/fname.c:117: warning: Function parameter or member 'out' not described in 'fscrypt_fname_encrypt' fs/crypto/fname.c:117: warning: Function parameter or member 'olen' not described in 'fscrypt_fname_encrypt' fs/crypto/fname.c:169: warning: Function parameter or member 'inode' not described in 'fname_decrypt' fs/crypto/fname.c:169: warning: Function parameter or member 'iname' not described in 'fname_decrypt' fs/crypto/fname.c:169: warning: Function parameter or member 'oname' not described in 'fname_decrypt' fs/crypto/fname.c:218: warning: Function parameter or member 'src' not described in 'base64_encode' fs/crypto/fname.c:218: warning: Function parameter or member 'len' not described in 'base64_encode' fs/crypto/fname.c:218: warning: Function parameter or member 'dst' not described in 'base64_encode' fs/crypto/fname.c:286: warning: Function parameter or member 'inode' not described in 'fscrypt_fname_alloc_buffer' fs/crypto/fname.c:286: warning: Function parameter or member 'max_encrypted_len' not described in 'fscrypt_fname_alloc_buffer' fs/crypto/fname.c:286: warning: Function parameter or member 'crypto_str' not described in 'fscrypt_fname_alloc_buffer' fs/crypto/fname.c:306: warning: Function parameter or member 'crypto_str' not described in 'fscrypt_fname_free_buffer' fs/crypto/fname.c:330: warning: Function parameter or member 'inode' not described in 'fscrypt_fname_disk_to_usr' fs/crypto/fname.c:330: warning: Function parameter or member 'hash' not described in 'fscrypt_fname_disk_to_usr' fs/crypto/fname.c:330: warning: Function parameter or member 'minor_hash' not described in 'fscrypt_fname_disk_to_usr' fs/crypto/fname.c:330: warning: Function parameter or member 'iname' not described in 'fscrypt_fname_disk_to_usr' fs/crypto/fname.c:330: warning: Function parameter or member 'oname' not described in 'fscrypt_fname_disk_to_usr' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org