diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-10-13 00:30:28 -0400 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2012-10-30 23:26:49 +0000 |
| commit | 34fb2c5983d16fac57b1ff78b5dbfe98b12bbde0 (patch) | |
| tree | 7273cbed1cd9d90534a72a580b3b72da262d749f /fs | |
| parent | 4bd0ee768c5242d7ae09dbb66c9e531a22da1f68 (diff) | |
NLM: nlm_lookup_file() may return NLMv4-specific error codes
commit cd0b16c1c3cda12dbed1f8de8f1a9b0591990724 upstream.
If the filehandle is stale, or open access is denied for some reason,
nlm_fopen() may return one of the NLMv4-specific error codes nlm4_stale_fh
or nlm4_failed. These get passed right through nlm_lookup_file(),
and so when nlmsvc_retrieve_args() calls the latter, it needs to filter
the result through the cast_status() machinery.
Failure to do so, will trigger the BUG_ON() in encode_nlm_stat...
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Reported-by: Larry McVoy <lm@bitmover.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/lockd/clntxdr.c | 2 | ||||
| -rw-r--r-- | fs/lockd/svcproc.c | 3 |
2 files changed, 3 insertions, 2 deletions
diff --git a/fs/lockd/clntxdr.c b/fs/lockd/clntxdr.c index 36057cedac6..6e2a2d5132a 100644 --- a/fs/lockd/clntxdr.c +++ b/fs/lockd/clntxdr.c @@ -223,7 +223,7 @@ static void encode_nlm_stat(struct xdr_stream *xdr, { __be32 *p; - BUG_ON(be32_to_cpu(stat) > NLM_LCK_DENIED_GRACE_PERIOD); + WARN_ON_ONCE(be32_to_cpu(stat) > NLM_LCK_DENIED_GRACE_PERIOD); p = xdr_reserve_space(xdr, 4); *p = stat; } diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c index d27aab11f32..d413af338da 100644 --- a/fs/lockd/svcproc.c +++ b/fs/lockd/svcproc.c @@ -67,7 +67,8 @@ nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp, /* Obtain file pointer. Not used by FREE_ALL call. */ if (filp != NULL) { - if ((error = nlm_lookup_file(rqstp, &file, &lock->fh)) != 0) + error = cast_status(nlm_lookup_file(rqstp, &file, &lock->fh)); + if (error != 0) goto no_locks; *filp = file; |