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nfsd: only fill out return pointer on success in nfsd4_lookup_stateid 

[ Upstream commit 4d01416ab4 ]

In the case of a revoked delegation, we still fill out the pointer even
when returning an error, which is bad form. Only overwrite the pointer
on success.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Jeff Layton 2022-09-26 12:38:44 -04:00 committed by Greg Kroah-Hartman
parent 4ad28d583e
commit ecb0eb07ee
1 changed files with 6 additions and 4 deletions
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10
fs/nfsd/nfs4state.c
View File

@ -6279,6 +6279,7 @@ nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
struct nfs4_stid **s, struct nfsd_net *nn)
{
__be32 status;
struct nfs4_stid *stid;
bool return_revoked = false;
/*
@ -6301,15 +6302,16 @@ nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
}
if (status)
return status;
*s = find_stateid_by_type(cstate->clp, stateid, typemask);
if (!*s)
stid = find_stateid_by_type(cstate->clp, stateid, typemask);
if (!stid)
return nfserr_bad_stateid;
if (((*s)->sc_type == NFS4_REVOKED_DELEG_STID) && !return_revoked) {
nfs4_put_stid(*s);
if ((stid->sc_type == NFS4_REVOKED_DELEG_STID) && !return_revoked) {
nfs4_put_stid(stid);
if (cstate->minorversion)
return nfserr_deleg_revoked;
return nfserr_bad_stateid;
}
*s = stid;
return nfs_ok;
}