From: Olga Kornievskaia kolga@netapp.com
[ Upstream commit 90e12a3191040bd3854d3e236c35921e4e92a044 ]
Remove the check for the zero length fs_locations reply in the xdr decoding, and instead check for that in the migration code.
Signed-off-by: Olga Kornievskaia kolga@netapp.com Signed-off-by: Anna Schumaker Anna.Schumaker@Netapp.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/nfs/nfs4state.c | 3 +++ fs/nfs/nfs4xdr.c | 2 -- 2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 4e63daeef6339..466c07bd06295 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1985,6 +1985,9 @@ static int nfs4_try_migration(struct nfs_server *server, struct rpc_cred *cred) }
result = -NFS4ERR_NXIO; + if (!locations->nlocations) + goto out; + if (!(locations->fattr.valid & NFS_ATTR_FATTR_V4_LOCATIONS)) { dprintk("<-- %s: No fs_locations data, migration skipped\n", __func__); diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 29dbb14b6fd11..b50c97c6aecb3 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -3633,8 +3633,6 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st if (unlikely(!p)) goto out_overflow; n = be32_to_cpup(p); - if (n <= 0) - goto out_eio; for (res->nlocations = 0; res->nlocations < n; res->nlocations++) { u32 m; struct nfs4_fs_location *loc;