Hi Herbert, another regression in kernel 6.16-rc2, this time in AF_ALF for Whirlpool hash. Cryptsetup can use kernel userspace API instead of userspace crypto lib and we have some testvectors to detect breakage of crypto. It now fails with PBKDF with Whirlpool hash (HMAC). You can reproduce it compiling cryptsetup with kernel API backend and run vector test: ./autogen.sh ./configure --with-crypto_backend=kernel make check-programs tests/vectors-test ... PBKDF vector 17 pbkdf2-sha1 [OK] PBKDF vector 18 pbkdf2-sha256 [OK] PBKDF vector 19 pbkdf2-sha512 [OK] PBKDF vector 20 pbkdf2-whirlpool [API FAILED] PBKDF test failed. The bisect points to Author: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Date: Thu May 15 13:54:42 2025 +0800 crypto: hmac - Add export_core and import_core Add export_import and import_core so that hmac can be used as a fallback by block-only drivers. Please let me know if you need more info. Milan