linux-kernel - Re: [PATCH v2 0/4] Additional fixes on Talitos driver

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Message-ID: <0cb7c534-6e48-5284-899c-c0ef85c3c126@c-s.fr>
Date:   Tue, 11 Jun 2019 17:40:09 +0200
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Horia Geanta <horia.geanta@....com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>
Cc:     "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH v2 0/4] Additional fixes on Talitos driver



Le 11/06/2019 à 17:37, Horia Geanta a écrit :
> On 6/11/2019 5:39 PM, Christophe Leroy wrote:
>> This series is the last set of fixes for the Talitos driver.
>>
>> We now get a fully clean boot on both SEC1 (SEC1.2 on mpc885) and
>> SEC2 (SEC2.2 on mpc8321E) with CONFIG_CRYPTO_MANAGER_EXTRA_TESTS:
>>
> I am getting below failures on a sec 3.3.2 (p1020rdb) for hmac(sha384) and
> hmac(sha512):

Is that new with this series or did you already have it before ?

What do you mean by "fuzz testing" enabled ? Is that 
CONFIG_CRYPTO_MANAGER_EXTRA_TESTS or something else ?

Christophe

> 
> alg: ahash: hmac-sha384-talitos test failed (wrong result) on test vector "random: psize=2497 ksize=124", cfg="random: inplace use_finup nosimd src_divs=[<reimport>76.49%@...02, <reimport>23.51%@...gnmask+26] iv_offset=4"
> alg: ahash: hmac-sha512-talitos test failed (wrong result) on test vector "random: psize=27 ksize=121", cfg="random: inplace may_sleep use_digest src_divs=[100.0%@+10] iv_offset=9"
> 
> Reproducibility rate is 100% so far, here are a few more runs - they might help finding a pattern:
> 
> 1.
> alg: ahash: hmac-sha384-talitos test failed (wrong result) on test vector "random: psize=184 ksize=121", cfg="random: use_finup src_divs=[<reimport,nosimd>100.0%@...88] dst_divs=[100.0%@...7] iv_offset=44"
> alg: ahash: hmac-sha512-talitos test failed (wrong result) on test vector "random: psize=7 ksize=122", cfg="random: may_sleep use_digest src_divs=[100.0%@...68] dst_divs=[100.0%@+20]"
> 
> 2.
> alg: ahash: hmac-sha384-talitos test failed (wrong result) on test vector "random: psize=6481 ksize=120", cfg="random: use_final src_divs=[<reimport>100.0%@+6] dst_divs=[43.84%@...gnmask+6, 56.16%@+22]"
> alg: ahash: hmac-sha512-talitos test failed (wrong result) on test vector "random: psize=635 ksize=128", cfg="random: may_sleep use_finup src_divs=[100.0%@...62] dst_divs=[20.47%@...09, 72.36%@...gnmask+2, 7.17%@...gnmask+3990]"
> 
> 3.
> alg: ahash: hmac-sha384-talitos test failed (wrong result) on test vector "random: psize=2428 ksize=127", cfg="random: may_sleep use_finup src_divs=[<reimport>35.19%@+18, 64.81%@...55] dst_divs=[100.0%@...1] iv_offset=5"
> alg: ahash: hmac-sha512-talitos test failed (wrong result) on test vector "random: psize=4345 ksize=128", cfg="random: may_sleep use_digest src_divs=[100.0%@...20] iv_offset=59"
> 
> If you run several times with fuzz testing enabled on your sec2.2,
> are you able to see similar failures?
> 
> Thanks,
> Horia
>