Hi KP, kernel test robot noticed the following build errors: [auto build test ERROR on bpf-next/net] [also build test ERROR on bpf-next/master bpf/master linus/master v6.16-rc1 next-20250606] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/KP-Singh/bpf-Implement-an-internal-helper-for-SHA256-hashing/20250607-073052 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git net patch link: https://lore.kernel.org/r/20250606232914.317094-2-kpsingh%40kernel.org patch subject: [PATCH 01/12] bpf: Implement an internal helper for SHA256 hashing config: alpha-defconfig (https://download.01.org/0day-ci/archive/20250609/202506091719.RN2qjs3P-lkp@xxxxxxxxx/config) compiler: alpha-linux-gcc (GCC) 15.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250609/202506091719.RN2qjs3P-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/202506091719.RN2qjs3P-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): alpha-linux-ld: kernel/bpf/core.o: in function `bpf_sha256': >> kernel/bpf/core.c:298:(.text+0x502c): undefined reference to `crypto_alloc_shash' >> alpha-linux-ld: kernel/bpf/core.c:298:(.text+0x5058): undefined reference to `crypto_alloc_shash' >> alpha-linux-ld: kernel/bpf/core.c:311:(.text+0x50a4): undefined reference to `crypto_shash_init' alpha-linux-ld: kernel/bpf/core.c:311:(.text+0x50b0): undefined reference to `crypto_shash_init' alpha-linux-ld: kernel/bpf/core.o: in function `crypto_free_shash': >> include/crypto/hash.h:765:(.text+0x50e0): undefined reference to `crypto_destroy_tfm' >> alpha-linux-ld: include/crypto/hash.h:765:(.text+0x50e4): undefined reference to `crypto_destroy_tfm' alpha-linux-ld: kernel/bpf/core.o: in function `crypto_shash_update': >> include/crypto/hash.h:992:(.text+0x5120): undefined reference to `crypto_shash_finup' >> alpha-linux-ld: include/crypto/hash.h:992:(.text+0x5124): undefined reference to `crypto_shash_finup' alpha-linux-ld: kernel/bpf/core.o: in function `crypto_shash_final': include/crypto/hash.h:1011:(.text+0x5138): undefined reference to `crypto_shash_finup' alpha-linux-ld: include/crypto/hash.h:1011:(.text+0x5148): undefined reference to `crypto_shash_finup' alpha-linux-ld: kernel/bpf/core.o: in function `crypto_free_shash': include/crypto/hash.h:765:(.text+0x5158): undefined reference to `crypto_destroy_tfm' alpha-linux-ld: include/crypto/hash.h:765:(.text+0x5164): undefined reference to `crypto_destroy_tfm' vim +298 kernel/bpf/core.c 290 291 int bpf_sha256(u8 *data, size_t data_size, u8 *output_digest) 292 { 293 struct crypto_shash *tfm; 294 struct shash_desc *shash_desc; 295 size_t desc_size; 296 int ret = 0; 297 > 298 tfm = crypto_alloc_shash("sha256", 0, 0); 299 if (IS_ERR(tfm)) 300 return PTR_ERR(tfm); 301 302 303 desc_size = crypto_shash_descsize(tfm) + sizeof(*shash_desc); 304 shash_desc = kmalloc(desc_size, GFP_KERNEL); 305 if (!shash_desc) { 306 crypto_free_shash(tfm); 307 return -ENOMEM; 308 } 309 310 shash_desc->tfm = tfm; > 311 ret = crypto_shash_init(shash_desc); 312 if (ret) 313 goto out_free_desc; 314 315 ret = crypto_shash_update(shash_desc, data, data_size); 316 if (ret) 317 goto out_free_desc; 318 319 ret = crypto_shash_final(shash_desc, output_digest); 320 if (ret) 321 goto out_free_desc; 322 323 out_free_desc: 324 kfree(shash_desc); 325 crypto_free_shash(tfm); 326 return ret; 327 } 328 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
