[R2.20-ubuntu-12-04 icehouse: Build 2]: vrouter-agent crash seen after running docker command

vrouter crashed after running below docker commands(compute node was hanged for sometime, console was also not opening. when it came back I found agent core):

root@nodec62:/etc/nova# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
3a3a9b4274c5 ubuntu:14.04 "/bin/bash" 4 minutes ago Up 4 minutes nova-b4c3a3d4-255b-48cc-be08-7255fc717983
07c3c952059d ubuntu:14.04 "/bin/bash" 15 minutes ago Up 15 minutes nova-21456ee6-d36c-43c2-ae67-e09dece880f9
root@nodec62:/etc/nova# docker ps -l
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
3a3a9b4274c5 ubuntu:14.04 "/bin/bash" 4 minutes ago Up 4 minutes nova-b4c3a3d4-255b-48cc-be08-7255fc717983
root@nodec62:/etc/nova# docker run 3a3a9b4274c5 /bin/echo "hello"
Unable to find image '3a3a9b4274c5:latest' locally
Pulling repository 3a3a9b4274c5
^Croot@nodec62:/etc/nova#
root@nodec62:/etc/nova#
root@nodec62:/etc/nova# docker run ubuntu:14.04 /bin/echo "hello"
hello
Write failed: Broken pipe

trace from core:
(gdb) bt
#0 0x00007f7eca1ea5ae in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007f7eca1ecf95 in malloc () from /lib/x86_64-linux-gnu/libc.so.6
#2 0x00007f7ecaaf1ded in operator new(unsigned long) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3 0x0000000000ffe491 in void boost::asio::detail::deadline_timer_service<boost::asio::time_traits<boost::chrono::steady_clock> >::async_wait<boost::_bi::bind_t<void, boost::_mfi::mf4<void, Timer, boost::intrusive_ptr<Timer>, int, unsigned int, boost::system::error_code const&>, boost::_bi::list5<boost::_bi::value<Timer*>, boost::_bi::value<boost::intrusive_ptr<Timer> >, boost::_bi::value<int>, boost::_bi::value<unsigned int>, boost::arg<1> (*)()> > >(boost::asio::detail::deadline_timer_service<boost::asio::time_traits<boost::chrono::steady_clock> >::implementation_type&, boost::_bi::bind_t<void, boost::_mfi::mf4<void, Timer, boost::intrusive_ptr<Timer>, int, unsigned int, boost::system::error_code const&>, boost::_bi::list5<boost::_bi::value<Timer*>, boost::_bi::value<boost::intrusive_ptr<Timer> >, boost::_bi::value<int>, boost::_bi::value<unsigned int>, boost::arg<1> (*)()> >) ()
#4 0x0000000000ffbf2b in Timer::Start(int, boost::function<bool ()>, boost::function<void (std::string, std::string, std::string)>) ()
#5 0x0000000000ffe6d4 in Timer::TimerTask::Run() ()
#6 0x0000000000ff0855 in TaskImpl::execute() ()
#7 0x00007f7ecad5ae52 in ?? () from /usr/lib/libtbb.so.2
#8 0x00007f7ecad56c2d in ?? () from /usr/lib/libtbb.so.2
#9 0x00007f7ecad560db in ?? () from /usr/lib/libtbb.so.2
#10 0x00007f7ecad53c1f in ?? () from /usr/lib/libtbb.so.2
#11 0x00007f7ecad53e59 in ?? () from /usr/lib/libtbb.so.2
#12 0x00007f7ecaf71e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#13 0x00007f7eca25e3fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#14 0x0000000000000000 in ?? ()

setup info:
env.roledefs = {
    'all': [host1,host2,host3,host4,host5],
    'cfgm': [host1,host2,host5],
    'openstack':[host2],
    'control': [host2,host1],
    'compute': [host3,host4],
    'collector': [host2,host1],
    'webui': [host1],
    'database': [host1,host2,host5],
    'build': [host_build],
}

env.hostnames = {
    'all': ['nodec64', 'nodeg18', 'nodec62', 'nodec11', 'nodec12']
}