Hi Vadim, kernel test robot noticed the following build warnings: [auto build test WARNING on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Vadim-Fedorenko/bpf-verifier-make-kfuncs-args-nullalble/20240509-214252 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20240509134023.1289303-3-vadfed%40meta.com patch subject: [PATCH bpf-next 2/4] bpf: crypto: make state and IV dynptr nullable config: x86_64-randconfig-102-20240510 (https://download.01.org/0day-ci/archive/20240510/202405101026.4PbHjNBN-lkp@xxxxxxxxx/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240510/202405101026.4PbHjNBN-lkp@xxxxxxxxx/reproduce) 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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202405101026.4PbHjNBN-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> kernel/bpf/crypto.c:317: warning: Function parameter or struct member 'siv__nullable' not described in 'bpf_crypto_decrypt' >> kernel/bpf/crypto.c:317: warning: Excess function parameter 'siv' description in 'bpf_crypto_decrypt' >> kernel/bpf/crypto.c:334: warning: Function parameter or struct member 'siv__nullable' not described in 'bpf_crypto_encrypt' >> kernel/bpf/crypto.c:334: warning: Excess function parameter 'siv' description in 'bpf_crypto_encrypt' vim +317 kernel/bpf/crypto.c 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 303 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 304 /** 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 305 * bpf_crypto_decrypt() - Decrypt buffer using configured context and IV provided. 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 306 * @ctx: The crypto context being used. The ctx must be a trusted pointer. 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 307 * @src: bpf_dynptr to the encrypted data. Must be a trusted pointer. 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 308 * @dst: bpf_dynptr to the buffer where to store the result. Must be a trusted pointer. 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 309 * @siv: bpf_dynptr to IV data and state data to be used by decryptor. 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 310 * 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 311 * Decrypts provided buffer using IV data and the crypto context. Crypto context must be configured. 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 312 */ 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 313 __bpf_kfunc int bpf_crypto_decrypt(struct bpf_crypto_ctx *ctx, 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 314 const struct bpf_dynptr_kern *src, 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 315 const struct bpf_dynptr_kern *dst, 9ce5fb6f36b954 Vadim Fedorenko 2024-05-09 316 const struct bpf_dynptr_kern *siv__nullable) 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 @317 { 9ce5fb6f36b954 Vadim Fedorenko 2024-05-09 318 return bpf_crypto_crypt(ctx, src, dst, siv__nullable, true); 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 319 } 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 320 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 321 /** 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 322 * bpf_crypto_encrypt() - Encrypt buffer using configured context and IV provided. 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 323 * @ctx: The crypto context being used. The ctx must be a trusted pointer. 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 324 * @src: bpf_dynptr to the plain data. Must be a trusted pointer. 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 325 * @dst: bpf_dynptr to buffer where to store the result. Must be a trusted pointer. 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 326 * @siv: bpf_dynptr to IV data and state data to be used by decryptor. 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 327 * 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 328 * Encrypts provided buffer using IV data and the crypto context. Crypto context must be configured. 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 329 */ 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 330 __bpf_kfunc int bpf_crypto_encrypt(struct bpf_crypto_ctx *ctx, 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 331 const struct bpf_dynptr_kern *src, 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 332 const struct bpf_dynptr_kern *dst, 9ce5fb6f36b954 Vadim Fedorenko 2024-05-09 333 const struct bpf_dynptr_kern *siv__nullable) 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 @334 { 9ce5fb6f36b954 Vadim Fedorenko 2024-05-09 335 return bpf_crypto_crypt(ctx, src, dst, siv__nullable, false); 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 336 } 3e1c6f35409f9e Vadim Fedorenko 2024-04-22 337 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
