Hi, With fuzz testing enabled, I am seeing xts(aes) failures on caam drivers. Below are several failures, extracted from different runs: [ 3.921654] alg: skcipher: xts-aes-caam encryption unexpectedly succeeded on test vector "random: len=40 klen=64"; expected_error=-22, cfg="random: inplace use_finup nosimd src_divs=[57.93%@+11, 37.18%@+164, <reimport>0.68%@+4, 0.50%@+305, 3.71%@alignmask+3975]" [ 3.726698] alg: skcipher: xts-aes-caam encryption unexpectedly succeeded on test vector "random: len=369 klen=64"; expected_error=-22, cfg="random: inplace may_sleep use_digest src_divs=[100.0%@alignmask+584]" [ 3.741082] alg: skcipher: xts-aes-caam encryption unexpectedly succeeded on test vector "random: len=2801 klen=64"; expected_error=-22, cfg="random: inplace may_sleep use_digest src_divs=[100.0%@+6] iv_offset=18" It looks like the problem is not in CAAM driver. More exactly, fuzz testing is generating random test vectors and running them through both SW generic (crypto/xts.c) and CAAM implementation: -SW generic implementation of xts(aes) does not support ciphertext stealing and throws -EINVAL when input is not a multiple of AES block size (16B) -caam has support for ciphertext stealing, and allows for any input size which results in "unexpectedly succeeded" error messages. Any suggestion how this should be fixed? Thanks, Horia
