linux-kernel - Re: [PATCH] NFSv4: Fix NFS_V4 select RPCSEC_GSS

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Message-ID: <2968C736-0150-4AFC-94BE-F9F8C2859F3E@oracle.com>
Date:   Tue, 28 Mar 2023 13:40:44 +0000
From:   Chuck Lever III <chuck.lever@...cle.com>
To:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Trond Myklebust <trond.myklebust@...merspace.com>,
        Anna Schumaker <anna@...nel.org>
CC:     Linux NFS Mailing List <linux-nfs@...r.kernel.org>,
        "linux-renesas-soc@...r.kernel.org" 
        <linux-renesas-soc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        kernel test robot <lkp@...el.com>,
        Niklas Söderlund 
        <niklas.soderlund@...natech.se>
Subject: Re: [PATCH] NFSv4: Fix NFS_V4 select RPCSEC_GSS_KRB5



> On Mar 28, 2023, at 3:25 AM, Geert Uytterhoeven <geert+renesas@...der.be> wrote:
> 
> If CONFIG_CRYPTO=n (e.g. arm/shmobile_defconfig):
> 
>    WARNING: unmet direct dependencies detected for RPCSEC_GSS_KRB5
>      Depends on [n]: NETWORK_FILESYSTEMS [=y] && SUNRPC [=y] && CRYPTO [=n]
>      Selected by [y]:
>      - NFS_V4 [=y] && NETWORK_FILESYSTEMS [=y] && NFS_FS [=y]
> 
> As NFSv4 can work without crypto enabled, fix this by making the
> selection of RPCSEC_GSS_KRB5 conditional on CRYPTO.
> 
> Fixes: e57d065277387980 ("NFS & NFSD: Update GSS dependencies")
> Reported-by: kernel test robot <lkp@...el.com>
> Link: https://lore.kernel.org/oe-kbuild-all/202303241307.f6NeW9gZ-lkp@intel.com/
> Reported-by: Niklas Söderlund <niklas.soderlund@...natech.se>
> Link: https://lore.kernel.org/r/ZCG6tIoz0VN6d+oy@sleipner.dyn.berto.se
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
> ---
> Nfsroot ("root=/dev/nfs rw nfsroot=aaa.bbb.ccc.ddd:/path/to/fs,tcp,v4")
> works fine without CRYPTO and RPCSEC_GSS_KRB5.
> CONFIG_NFSD_V4 selects CRYPTO, so was not affected by the similar change.

Makes sense to me.

I can quickly take this through nfsd-fixes if the NFS maintainers
can send me an Acked-by.


> ---
> fs/nfs/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig
> index 450d6c3bc05e27dd..f05c13ce0155bd69 100644
> --- a/fs/nfs/Kconfig
> +++ b/fs/nfs/Kconfig
> @@ -75,7 +75,7 @@ config NFS_V3_ACL
> config NFS_V4
> 	tristate "NFS client support for NFS version 4"
> 	depends on NFS_FS
> -	select RPCSEC_GSS_KRB5
> +	select RPCSEC_GSS_KRB5 if CRYPTO
> 	select KEYS
> 	help
> 	  This option enables support for version 4 of the NFS protocol
> -- 
> 2.34.1
> 

--
Chuck Lever