build-70-R1.06-ubuntu-havana- vnswad core during process restart

Logs are available at : 10.84.24.64 : /cs-shared/test_runs/a6s32/2014_07_08_21_50_59

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/vnswad'.
Program terminated with signal 11, Segmentation fault.
#0 0x00007fe925103f9b in std::string::assign(std::string const&) ()
   from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#0 0x00007fe925103f9b in std::string::assign(std::string const&) ()
   from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#1 0x0000000000f891cf in RouteInfo::set_peer(std::string const&) ()
#2 0x0000000000f87e21 in AgentRoute::FillTrace(RouteInfo&, AgentRoute::Trace, AgentPath const*) ()
#3 0x0000000000f8e9d0 in AgentRouteTable::Input(DBTablePartition*, DBClient*, DBRequest*) ()
#4 0x000000000154849e in DBTablePartition::Process(DBClient*, DBRequest*) ()
#5 0x0000000001541fa7 in DBPartition::QueueRunner::Run() ()
#6 0x000000000163a88d in TaskImpl::execute() ()
#7 0x00007fe925a2bece in ?? () from /usr/lib64/contrail/libtbb_debug.so.2
#8 0x00007fe925a22e0b in ?? () from /usr/lib64/contrail/libtbb_debug.so.2
#9 0x00007fe925a216f2 in ?? () from /usr/lib64/contrail/libtbb_debug.so.2
#10 0x00007fe925a1c3ce in ?? () from /usr/lib64/contrail/libtbb_debug.so.2
#11 0x00007fe925a1c270 in ?? () from /usr/lib64/contrail/libtbb_debug.so.2
#12 0x00007fe925573e9a in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#13 0x00007fe924886ccd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#14 0x0000000000000000 in ?? ()