From: Gary R Hook <ghook@amd.com>
To: Eric Biggers <ebiggers@kernel.org>,
"Lendacky, Thomas" <Thomas.Lendacky@amd.com>,
"Hook, Gary" <Gary.Hook@amd.com>
Cc: "linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>,
Cfir Cohen <cfir@google.com>,
David Rientjes <rientjes@google.com>
Subject: Re: gcm-aes-ccp self-tests failure
Date: Tue, 2 Jul 2019 17:44:55 +0000 [thread overview]
Message-ID: <5aa874b3-22ad-3fc1-687c-9e02e0bd60e9@amd.com> (raw)
In-Reply-To: <20190702160614.GC895@sol.localdomain>
On 7/2/19 11:06 AM, Eric Biggers wrote:
> Hi Tom and Gary,
>
> On latest cryptodev tree, I'm seeing the following self-test failure after I
> built a kernel with the AMD CCP driver and crypto self-tests enabled, and booted
> it on system with a Ryzen processor ("Threadripper 1950X"):
>
> [ 4.378985] alg: aead: gcm-aes-ccp encryption test failed (wrong result) on test vector 2, cfg="two even aligned splits"
>
> i.e., in some cases the AES-GCM implementation produces the wrong ciphertext
> and/or authentication tag.
>
> Is this is a known issue? When will it be fixed?
>
> The potentially relevant bits of my Kconfig are:
>
> CONFIG_CRYPTO_AES=y
> CONFIG_CRYPTO_GCM=y
> CONFIG_CRYPTO_DEV_CCP=y
> CONFIG_CRYPTO_DEV_CCP_DD=y
> CONFIG_CRYPTO_DEV_SP_CCP=y
> CONFIG_CRYPTO_DEV_CCP_CRYPTO=y
> CONFIG_CRYPTO_DEV_SP_PSP=y
> # CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set
> CONFIG_DEBUG_KERNEL=y
> CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y
>
> - Eric
>
Yes, this is a known problem. We have no estimate on a fix at this time.
I need to light a fire under someone now.
grh
prev parent reply other threads:[~2019-07-02 17:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-02 16:06 gcm-aes-ccp self-tests failure Eric Biggers
2019-07-02 17:44 ` Gary R Hook [this message]
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