linux-kernel - Re: linux-next: build failure after merge of the keys tree

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Date:   Wed, 13 May 2020 22:46:10 -0600
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     David Howells <dhowells@...hat.com>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the keys tree

Hey Masahiro,

Your touch might be helpful here. CRYPTO_LIB_CHACHA20POLY1305 is a
tristate and depends on as well as selects other things that are
tristates.

Meanwhile BIG_KEYS is a bool, which needs to select
CRYPTO_LIB_CHACHA20POLY1305. However, it gets antsy if the the symbol
its selecting has =m items in its hierarchy.

Any suggestions? The ideal thing to happen would be that the select of
CRYPTO_LIB_CHACHA20POLY1305 in BIG_KEYS causes all of the descendants
to become =y too.

Jason


On Wed, May 13, 2020 at 10:31 PM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Hi all,
>
> After merging the keys tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
>
> WARNING: unmet direct dependencies detected for CRYPTO_LIB_CHACHA20POLY1305
>   Depends on [m]: CRYPTO [=y] && (CRYPTO_ARCH_HAVE_LIB_CHACHA [=m] || !CRYPTO_ARCH_HAVE_LIB_CHACHA [=m]) && (CRYPTO_ARCH_HAVE_LIB_POLY1305 [=m] || !CRYPTO_ARCH_HAVE_LIB_POLY1305 [=m])
>   Selected by [y]:
>   - BIG_KEYS [=y] && KEYS [=y] && TMPFS [=y]
>   Selected by [m]:
>   - WIREGUARD [=m] && NETDEVICES [=y] && NET_CORE [=y] && NET [=y] && INET [=y] && (IPV6 [=y] || !IPV6 [=y])
>
> WARNING: unmet direct dependencies detected for CRYPTO_LIB_CHACHA20POLY1305
>   Depends on [m]: CRYPTO [=y] && (CRYPTO_ARCH_HAVE_LIB_CHACHA [=m] || !CRYPTO_ARCH_HAVE_LIB_CHACHA [=m]) && (CRYPTO_ARCH_HAVE_LIB_POLY1305 [=m] || !CRYPTO_ARCH_HAVE_LIB_POLY1305 [=m])
>   Selected by [y]:
>   - BIG_KEYS [=y] && KEYS [=y] && TMPFS [=y]
>   Selected by [m]:
>   - WIREGUARD [=m] && NETDEVICES [=y] && NET_CORE [=y] && NET [=y] && INET [=y] && (IPV6 [=y] || !IPV6 [=y])
>
> WARNING: unmet direct dependencies detected for CRYPTO_LIB_CHACHA20POLY1305
>   Depends on [m]: CRYPTO [=y] && (CRYPTO_ARCH_HAVE_LIB_CHACHA [=m] || !CRYPTO_ARCH_HAVE_LIB_CHACHA [=m]) && (CRYPTO_ARCH_HAVE_LIB_POLY1305 [=m] || !CRYPTO_ARCH_HAVE_LIB_POLY1305 [=m])
>   Selected by [y]:
>   - BIG_KEYS [=y] && KEYS [=y] && TMPFS [=y]
>   Selected by [m]:
>   - WIREGUARD [=m] && NETDEVICES [=y] && NET_CORE [=y] && NET [=y] && INET [=y] && (IPV6 [=y] || !IPV6 [=y])
> x86_64-linux-gnu-ld: lib/crypto/chacha20poly1305.o: in function `xchacha_init':
> chacha20poly1305.c:(.text+0x12d): undefined reference to `chacha_init_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x13d): undefined reference to `hchacha_block_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x14b): undefined reference to `chacha_init_arch'
> x86_64-linux-gnu-ld: lib/crypto/chacha20poly1305.o: in function `__chacha20poly1305_encrypt':
> chacha20poly1305.c:(.text+0x2ab): undefined reference to `chacha_crypt_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x2bd): undefined reference to `poly1305_init_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x2d6): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x317): undefined reference to `chacha_crypt_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x32d): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x379): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x385): undefined reference to `poly1305_final_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x413): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x434): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: lib/crypto/chacha20poly1305.o: in function `chacha20poly1305_encrypt':
> (.text+0x59d): undefined reference to `chacha_init_arch'
> x86_64-linux-gnu-ld: lib/crypto/chacha20poly1305.o: in function `__chacha20poly1305_decrypt':
> chacha20poly1305.c:(.text+0x847): undefined reference to `chacha_crypt_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x859): undefined reference to `poly1305_init_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x86d): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x8a7): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x8f1): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x8fc): undefined reference to `poly1305_final_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x94f): undefined reference to `chacha_crypt_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x9d9): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x9f9): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: lib/crypto/chacha20poly1305.o: in function `chacha20poly1305_decrypt':
> (.text+0xb78): undefined reference to `chacha_init_arch'
> x86_64-linux-gnu-ld: lib/crypto/chacha20poly1305.o: in function `chacha20poly1305_crypt_sg_inplace':
> chacha20poly1305.c:(.text+0xf16): undefined reference to `chacha_init_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0xf3b): undefined reference to `chacha_crypt_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0xf50): undefined reference to `poly1305_init_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x1094): undefined reference to `chacha_crypt_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x1155): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x117b): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x11da): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x1223): undefined reference to `poly1305_final_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x1321): undefined reference to `chacha_crypt_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x1401): undefined reference to `poly1305_final_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x14a3): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x14d6): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x1507): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x1573): undefined reference to `poly1305_update_arch'
> x86_64-linux-gnu-ld: chacha20poly1305.c:(.text+0x15aa): undefined reference to `poly1305_final_arch'
>
> Caused by commit
>
>   f22998a0de8a ("security/keys: rewrite big_key crypto to use library interface")
>
> I have used the keys tree from next-20200512 for today.
>
> --
> Cheers,
> Stephen Rothwell