linux-kernel - dm-crypt error when CONFIG_CRYPTO

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Message-ID: <20190920154434.GA923@gandi.net>
Date:   Fri, 20 Sep 2019 17:44:34 +0200
From:   Thibaut Sautereau <thibaut.sautereau@...p-os.org>
To:     dm-devel@...hat.com, Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...hat.com>
Cc:     linux-kernel@...r.kernel.org
Subject: dm-crypt error when CONFIG_CRYPTO_AUTHENC is disabled

Hi,

I just got a dm-crypt "crypt: Error allocating crypto tfm" error when
trying to "cryptsetup open" a volume. I found out that it was only
happening when I disabled CONFIG_CRYPTO_AUTHENC.

drivers/md/dm-crypt.c includes the crypto/authenc.h header and seems to
use some CRYPTO_AUTHENC-related stuff. Therefore, shouldn't
CONFIG_DM_CRYPT select CONFIG_CRYPTO_AUTHENC?

-- 
Thibaut Sautereau
CLIP OS developer