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

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Date:   Tue, 28 Mar 2023 09:25:57 +0200
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Chuck Lever <chuck.lever@...cle.com>,
        Trond Myklebust <trond.myklebust@...merspace.com>,
        Anna Schumaker <anna@...nel.org>
Cc:     linux-nfs@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        kernel test robot <lkp@...el.com>,
        Niklas Söderlund <niklas.soderlund@...natech.se>
Subject: [PATCH] NFSv4: Fix NFS_V4 select RPCSEC_GSS_KRB5

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.
---
 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