[PATCH]: nfs acl: bugfix, don't use static nfsd_acl_versions[]

[PATCH]: nfs acl: bugfix, don't use static nfsd_acl_versions[]

[J. R. Okajima]

Here is a patch to fix nfs acl.

J. R. Okajima

----------------------------------------
commit 8684b9a7c55e9283e8b21112fbdf19b4d27f36b7
Author: J. R. Okajima <hooanon05g@gmail.com>
Date:   Mon Jan 6 01:31:20 2020 +0900

    nfs acl: bugfix, don't use static nfsd_acl_versions[]
    
    By the commit for v5.2-rc1,
    e333f3bbefe3 2019-04-24 nfsd: Allow containers to set supported nfs versions
    the line to copy a value from nfsd_acl_version[] to static
    nfsd_acl_versions[] was removed.  It is OK, but nfsd_acl_versions[] is
    still set to nfsd_acl_program.pg_vers which means pg_vers has NULLs for
    its all entires and nfsacl stops working entirely.
    I am afraid the removal of static nfsd_acl_versions[] was just
    forgotten.
    
    Signed-off-by: J. R. Okajima <hooanon05g@gmail.com>

diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 18d94ea984ba..7f938bcb927d 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -94,12 +94,11 @@ static const struct svc_version *nfsd_acl_version[] = {
 
 #define NFSD_ACL_MINVERS            2
 #define NFSD_ACL_NRVERS		ARRAY_SIZE(nfsd_acl_version)
-static const struct svc_version *nfsd_acl_versions[NFSD_ACL_NRVERS];
 
 static struct svc_program	nfsd_acl_program = {
 	.pg_prog		= NFS_ACL_PROGRAM,
 	.pg_nvers		= NFSD_ACL_NRVERS,
-	.pg_vers		= nfsd_acl_versions,
+	.pg_vers		= nfsd_acl_version,
 	.pg_name		= "nfsacl",
 	.pg_class		= "nfsd",
 	.pg_stats		= &nfsd_acl_svcstats,

Re: [PATCH]: nfs acl: bugfix, don't use static nfsd_acl_versions[]

[J. Bruce Fields]

Thanks, but, see 7c149057d044 "nfsd: restore NFSv3 ACL support", in
5.5-rc1; looks like you and I both stumbled on the identical fix?--b.

On Mon, Jan 06, 2020 at 01:38:02AM +0900, J. R. Okajima wrote:
> Here is a patch to fix nfs acl.
> 
> J. R. Okajima
> 
> ----------------------------------------
> commit 8684b9a7c55e9283e8b21112fbdf19b4d27f36b7
> Author: J. R. Okajima <hooanon05g@gmail.com>
> Date:   Mon Jan 6 01:31:20 2020 +0900
> 
>     nfs acl: bugfix, don't use static nfsd_acl_versions[]
>     
>     By the commit for v5.2-rc1,
>     e333f3bbefe3 2019-04-24 nfsd: Allow containers to set supported nfs versions
>     the line to copy a value from nfsd_acl_version[] to static
>     nfsd_acl_versions[] was removed.  It is OK, but nfsd_acl_versions[] is
>     still set to nfsd_acl_program.pg_vers which means pg_vers has NULLs for
>     its all entires and nfsacl stops working entirely.
>     I am afraid the removal of static nfsd_acl_versions[] was just
>     forgotten.
>     
>     Signed-off-by: J. R. Okajima <hooanon05g@gmail.com>
> 
> diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
> index 18d94ea984ba..7f938bcb927d 100644
> --- a/fs/nfsd/nfssvc.c
> +++ b/fs/nfsd/nfssvc.c
> @@ -94,12 +94,11 @@ static const struct svc_version *nfsd_acl_version[] = {
>  
>  #define NFSD_ACL_MINVERS            2
>  #define NFSD_ACL_NRVERS		ARRAY_SIZE(nfsd_acl_version)
> -static const struct svc_version *nfsd_acl_versions[NFSD_ACL_NRVERS];
>  
>  static struct svc_program	nfsd_acl_program = {
>  	.pg_prog		= NFS_ACL_PROGRAM,
>  	.pg_nvers		= NFSD_ACL_NRVERS,
> -	.pg_vers		= nfsd_acl_versions,
> +	.pg_vers		= nfsd_acl_version,
>  	.pg_name		= "nfsacl",
>  	.pg_class		= "nfsd",
>  	.pg_stats		= &nfsd_acl_svcstats,
> 

Re: [PATCH]: nfs acl: bugfix, don't use static nfsd_acl_versions[]

[J. R. Okajima]

"J. Bruce Fields":
> Thanks, but, see 7c149057d044 "nfsd: restore NFSv3 ACL support", in
> 5.5-rc1; looks like you and I both stumbled on the identical fix?--b.

Ah, you already fixed.  I didn't notice since I am still in v5.4.
Sorry for the noise.


J. R. Okajima