On Fri, Sep 20 2019 at 11:44am -0400,
Thibaut Sautereau <thibaut.sautereau@xxxxxxxxxxx> wrote:
> 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?
Yes, it looks like commit ef43aa38063a6 ("dm crypt: add cryptographic
data integrity protection (authenticated encryption)") should've added
'select CRYPTO_AUTHENC' to dm-crypt's Kconfig. I'll let Milan weigh-in
but that seems like the right way forward.
Thanks for your report!
Mike
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