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authorJ. Bruce Fields <bfields@redhat.com>2014-01-28 16:01:04 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-06 07:55:29 -0700
commitc5393b70f9229b3e68146c84888cbfc8be002d72 (patch)
tree830d14c19ca3d010666e10d6494db5a9759985f4
parent4b034e7b55357d8fae469134405360d508d42f84 (diff)
nfsd4: session needs room for following op to error out
commit 4c69d5855a16f7378648c5733632628fa10431db upstream. Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--fs/nfsd/nfs4proc.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 27d74a29451..e0bfacd23a8 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1307,6 +1307,12 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
/* If op is non-idempotent */
if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
plen = opdesc->op_rsize_bop(rqstp, op);
+ /*
+ * If there's still another operation, make sure
+ * we'll have space to at least encode an error:
+ */
+ if (resp->opcnt < args->opcnt)
+ plen += COMPOUND_ERR_SLACK_SPACE;
op->status = nfsd4_check_resp_size(resp, plen);
}