tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 0e6ac87df9e5122747ac5d9e7da9a45555f16374 commit: b3fef06570ef2b61dd7181e5c1d128bfcbf6b2ef [3267/3388] ima: Add parser of compact digest list config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240224/202402241300.uvUkIofs-lkp@i...) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240224/202402241300.uvUkIofs-lkp@i...)

If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot lkp@intel.com | Closes: https://lore.kernel.org/oe-kbuild-all/202402241300.uvUkIofs-lkp@intel.com/

All warnings (new ones prefixed by >>):

...

security/integrity/ima/ima_appraise.c:188:16: warning: no previous prototype for function 'ima_get_hash_algo' [-Wmissing-prototypes]

188 | enum hash_algo ima_get_hash_algo(const struct evm_ima_xattr_data *xattr_value, | ^ security/integrity/ima/ima_appraise.c:188:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 188 | enum hash_algo ima_get_hash_algo(const struct evm_ima_xattr_data *xattr_value, | ^ | static 1 warning generated.

vim +/ima_get_hash_algo +188 security/integrity/ima/ima_appraise.c

d79d72e02485c0 Mimi Zohar 2012-12-03 187 50f742dd91474e THOBY Simon 2021-08-16 @188 enum hash_algo ima_get_hash_algo(const struct evm_ima_xattr_data *xattr_value, 1525b06d99b117 Dmitry Kasatkin 2014-10-30 189 int xattr_len) d3634d0f426bde Dmitry Kasatkin 2013-04-25 190 { d3634d0f426bde Dmitry Kasatkin 2013-04-25 191 struct signature_v2_hdr *sig; b4bfec7f4a8642 Seth Forshee 2016-08-01 192 enum hash_algo ret; d3634d0f426bde Dmitry Kasatkin 2013-04-25 193 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 194 if (!xattr_value || xattr_len < 2) 1525b06d99b117 Dmitry Kasatkin 2014-10-30 195 /* return default hash algo */ 1525b06d99b117 Dmitry Kasatkin 2014-10-30 196 return ima_hash_algo; d3634d0f426bde Dmitry Kasatkin 2013-04-25 197 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 198 switch (xattr_value->type) { 398c42e2c46c88 Mimi Zohar 2021-11-24 199 case IMA_VERITY_DIGSIG: 398c42e2c46c88 Mimi Zohar 2021-11-24 200 sig = (typeof(sig))xattr_value; 398c42e2c46c88 Mimi Zohar 2021-11-24 201 if (sig->version != 3 || xattr_len <= sizeof(*sig) || 398c42e2c46c88 Mimi Zohar 2021-11-24 202 sig->hash_algo >= HASH_ALGO__LAST) 398c42e2c46c88 Mimi Zohar 2021-11-24 203 return ima_hash_algo; 398c42e2c46c88 Mimi Zohar 2021-11-24 204 return sig->hash_algo; 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 205 case EVM_IMA_XATTR_DIGSIG: 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 206 sig = (typeof(sig))xattr_value; cb181da161963e THOBY Simon 2021-08-22 207 if (sig->version != 2 || xattr_len <= sizeof(*sig) cb181da161963e THOBY Simon 2021-08-22 208 || sig->hash_algo >= HASH_ALGO__LAST) 1525b06d99b117 Dmitry Kasatkin 2014-10-30 209 return ima_hash_algo; 1525b06d99b117 Dmitry Kasatkin 2014-10-30 210 return sig->hash_algo; 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 211 case IMA_XATTR_DIGEST_NG: 650b29dbdf2caf Thiago Jung Bauermann 2019-06-11 212 /* first byte contains algorithm id */ 650b29dbdf2caf Thiago Jung Bauermann 2019-06-11 213 ret = xattr_value->data[0]; b4bfec7f4a8642 Seth Forshee 2016-08-01 214 if (ret < HASH_ALGO__LAST) b4bfec7f4a8642 Seth Forshee 2016-08-01 215 return ret; 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 216 break; 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 217 case IMA_XATTR_DIGEST: 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 218 /* this is for backward compatibility */ 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 219 if (xattr_len == 21) { 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 220 unsigned int zero = 0; 650b29dbdf2caf Thiago Jung Bauermann 2019-06-11 221 if (!memcmp(&xattr_value->data[16], &zero, 4)) 1525b06d99b117 Dmitry Kasatkin 2014-10-30 222 return HASH_ALGO_MD5; 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 223 else 1525b06d99b117 Dmitry Kasatkin 2014-10-30 224 return HASH_ALGO_SHA1; 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 225 } else if (xattr_len == 17) 1525b06d99b117 Dmitry Kasatkin 2014-10-30 226 return HASH_ALGO_MD5; 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 227 break; 3ea7a56067e663 Dmitry Kasatkin 2013-08-12 228 } 1525b06d99b117 Dmitry Kasatkin 2014-10-30 229 1525b06d99b117 Dmitry Kasatkin 2014-10-30 230 /* return default hash algo */ 1525b06d99b117 Dmitry Kasatkin 2014-10-30 231 return ima_hash_algo; d3634d0f426bde Dmitry Kasatkin 2013-04-25 232 } d3634d0f426bde Dmitry Kasatkin 2013-04-25 233

:::::: The code at line 188 was first introduced by commit :::::: 50f742dd91474e7f4954bf88d094eede59783883 IMA: block writes of the security.ima xattr with unsupported algorithms

:::::: TO: THOBY Simon Simon.THOBY@viveris.fr :::::: CC: Mimi Zohar zohar@linux.ibm.com