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author | Olga Kornievskaia <kolga@netapp.com> | 2021-12-09 14:53:29 -0500 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-16 12:51:44 +0100 |
commit | 152f7db416c4bfcc8fc01e55cae60f63489580fa (patch) | |
tree | 61e286dd115bd0b335b772fa77d13f44bec66520 /fs | |
parent | e6b0f9177c43ff9ad0f1a6dd3639c383373911b7 (diff) | |
download | linux-stable-152f7db416c4bfcc8fc01e55cae60f63489580fa.tar.gz linux-stable-152f7db416c4bfcc8fc01e55cae60f63489580fa.tar.bz2 linux-stable-152f7db416c4bfcc8fc01e55cae60f63489580fa.zip |
NFSv4 remove zero number of fs_locations entries error check
[ 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>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/nfs/nfs4state.c | 3 | ||||
-rw-r--r-- | 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 b3086e99420c..9c98547fcefc 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -2066,6 +2066,9 @@ 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 8a61dc21d3d6..56e48642c43e 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -3747,8 +3747,6 @@ 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; |