tor agent crash at vteprec_ucast_macs_remote_set_logical_switch

R2.1 Build 1 Ubuntu multi-node setup

contrail-tor-agent had crashed multiple times on nodeg11.
It is possible at this moment, there was another tor agent who was managing the same TOR

Logs and core will be in http://10.204.216.50/Docs/bugs/#

root@nodeg11:/var/crashes# gdb /usr/bin/contrail-tor-agent core.contrail-tor-ag.20341.nodeg11.1421404699
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Reading symbols from /usr/bin/contrail-tor-agent...(no debugging symbols found)...done.

warning: core file may not match specified executable file.
[New LWP 20896]
[New LWP 20897]
[New LWP 20898]
[New LWP 20341]
[New LWP 20899]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/contrail-tor-agent --config_file /etc/contrail/contrail-tor-agent-1.co'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00000000008fa478 in vteprec_ucast_macs_remote_set_logical_switch ()
(gdb) bt
#0 0x00000000008fa478 in vteprec_ucast_macs_remote_set_logical_switch ()
#1 0x00000000008c5a6b in obvsdb_wrapper_add_ucast_mac_remote ()
#2 0x00000000008cf308 in OVSDB::UnicastMacRemoteEntry::AddMsg(ovsdb_idl_txn*)
    ()
#3 0x00000000008c40fb in OVSDB::OvsdbDBEntry::Add() ()
#4 0x00000000008c46cc in OVSDB::OvsdbDBEntry::Ack(bool) ()
#5 0x00000000008c360e in OVSDB::ovsdb_wrapper_idl_txn_ack(void*, ovsdb_idl_txn*) ()
#6 0x00000000008df5b3 in ?? ()
#7 0x00000000008e0730 in ?? ()
#8 0x00000000008dbdf9 in ovsdb_idl_msg_process ()
#9 0x00000000008c2aa7 in OVSDB::OvsdbClientIdl::MessageProcess(unsigned char const*, unsigned long) ()
#10 0x00000000008994d9 in OVSDB::OvsdbClientTcpSession::ReceiveDequeue(OVSDB::OvsdbClientTcpSession::queue_msg) ()
#11 0x000000000089ae80 in boost::detail::function::function_obj_invoker1<boost::_bi::bind_t<bool, boost::_mfi::mf1<bool, OVSDB::OvsdbClientTcpSession, OVSDB::OvsdbClientTcpSession::queue_msg>, boost::_bi::list2<boost::_bi::value<OVSDB::OvsdbClientTcpSession*>, boost::arg<1> > >, bool, OVSDB::OvsdbClientTcpSession::queue_msg>::invoke(boost::detail::function::function_buffer&, OVSDB::OvsdbClientTcpSession::queue_msg) ()
#12 0x000000000089c6d8 in QueueTaskRunner<OVSDB::OvsdbClientTcpSession::queue_msg, WorkQueue<OVSDB::OvsdbClientTcpSession::queue_msg> >::Run() ()
---Type <return> to continue, or q <return> to quit---
#13 0x0000000000d2ff30 in TaskImpl::execute() ()
#14 0x00007faba290cb3a in ?? () from /usr/lib/libtbb.so.2
#15 0x00007faba2908816 in ?? () from /usr/lib/libtbb.so.2
#16 0x00007faba2907f4b in ?? () from /usr/lib/libtbb.so.2
#17 0x00007faba29040ff in ?? () from /usr/lib/libtbb.so.2
#18 0x00007faba29042f9 in ?? () from /usr/lib/libtbb.so.2
#19 0x00007faba2b28182 in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#20 0x00007faba17c8fbd in clone () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) quit
root@nodeg11:/var/crashes# service contrail-tor-agent status
contrail-tor-agent: unrecognized service
root@nodeg11:/var/crashes# service contrail-tor-agent-1 status
contrail-tor-agent-1 FATAL Exited too quickly (process log may have details)
root@nodeg11:/var/crashes#