linux-kernel - Re: [PATCH] crypto: ecrdsa - Fix module auto-load on add

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Message-ID: <ZgVMpr19vT9vEJBJ@gondor.apana.org.au>
Date: Thu, 28 Mar 2024 18:55:34 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: Vitaly Chikunov <vt@...linux.org>
Cc: linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
	Paul Wolneykien <manowar@...linux.org>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH] crypto: ecrdsa - Fix module auto-load on add_key

On Mon, Mar 18, 2024 at 03:42:40AM +0300, Vitaly Chikunov wrote:
> Add module alias with the algorithm cra_name similar to what we have for
> RSA-related and other algorithms.
> 
> The kernel attempts to modprobe asymmetric algorithms using the names
> "crypto-$cra_name" and "crypto-$cra_name-all." However, since these
> aliases are currently missing, the modules are not loaded. For instance,
> when using the `add_key` function, the hash algorithm is typically
> loaded automatically, but the asymmetric algorithm is not.
> 
> Steps to test:
> 
> 1. Cert is generated usings ima-evm-utils test suite with
>    `gen-keys.sh`, example cert is provided below:
> 
>   $ base64 -d >test-gost2012_512-A.cer <<EOF
>   MIIB/DCCAWagAwIBAgIUK8+whWevr3FFkSdU9GLDAM7ure8wDAYIKoUDBwEBAwMFADARMQ8wDQYD
>   VQQDDAZDQSBLZXkwIBcNMjIwMjAxMjIwOTQxWhgPMjA4MjEyMDUyMjA5NDFaMBExDzANBgNVBAMM
>   BkNBIEtleTCBoDAXBggqhQMHAQEBAjALBgkqhQMHAQIBAgEDgYQABIGALXNrTJGgeErBUOov3Cfo
>   IrHF9fcj8UjzwGeKCkbCcINzVUbdPmCopeJRHDJEvQBX1CQUPtlwDv6ANjTTRoq5nCk9L5PPFP1H
>   z73JIXHT0eRBDVoWy0cWDRz1mmQlCnN2HThMtEloaQI81nTlKZOcEYDtDpi5WODmjEeRNQJMdqCj
>   UDBOMAwGA1UdEwQFMAMBAf8wHQYDVR0OBBYEFCwfOITMbE9VisW1i2TYeu1tAo5QMB8GA1UdIwQY
>   MBaAFCwfOITMbE9VisW1i2TYeu1tAo5QMAwGCCqFAwcBAQMDBQADgYEAmBfJCMTdC0/NSjz4BBiQ
>   qDIEjomO7FEHYlkX5NGulcF8FaJW2jeyyXXtbpnub1IQ8af1KFIpwoS2e93LaaofxpWlpQLlju6m
>   KYLOcO4xK3Whwa2hBAz9YbpUSFjvxnkS2/jpH2MsOSXuUEeCruG/RkHHB3ACef9umG6HCNQuAPY=
>   EOF
> 
> 2. Optionally, trace module requests with: trace-cmd stream -e module &
> 
> 3. Trigger add_key call for the cert:
> 
>   # keyctl padd asymmetric "" @u <test-gost2012_512-A.cer
>   939910969
>   # lsmod | head -3
>   Module                  Size  Used by
>   ecrdsa_generic         16384  0
>   streebog_generic       28672  0
> 
> Repored-by: Paul Wolneykien <manowar@...linux.org>
> Cc: stable@...r.kernel.org
> Signed-off-by: Vitaly Chikunov <vt@...linux.org>
> ---
>  crypto/ecrdsa.c | 1 +
>  1 file changed, 1 insertion(+)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt