mds: drop reconnect message from non-existent session

fixes:http://tracker.ceph.com/issues/39026

Signed-off-by: Shen Hang <harryshen18@gmail.com>
(cherry picked from commit 017cd2a663e71039c54c57d70fec722c0c4aba81)

diff --git a/src/mds/Server.cc b/src/mds/Server.cc
index 8bfd19cbcfaad791a21feeb7348724b1ab4faeeb..b4ac5c819fae5364500771cddff74fe36c01e881 100644 (file)
--- a/src/mds/Server.cc
+++ b/src/mds/Server.cc
@@ -1199,7 +1199,8 @@ void Server::handle_client_reconnect(const MClientReconnect::const_ref &m)
          << (m->has_more() ? " (more)" : "") << dendl;
   client_t from = m->get_source().num();
   Session *session = mds->get_session(m);
-  ceph_assert(session);
+  if (!session)
+    return;
 
   if (!mds->is_reconnect() && mds->get_want_state() == CEPH_MDS_STATE_RECONNECT) {
     dout(10) << " we're almost in reconnect state (mdsmap delivery race?); waiting" << dendl;