[R2.20-ubuntu-12-04 icehouse: Build 3]: vrouter-agent coredump at ptr_circular_buffer

backtrace:

(gdb) bt
#0 0x00007fa425f8e425 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007fa425f91b8b in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2 0x00007fa425fcc39e in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#3 0x00007fa425fd6b96 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#4 0x0000000000c1d51d in boost::ptr_circular_buffer<SandeshTrace, boost::heap_clone_allocator, std::allocator<void*> >::push_back(SandeshTrace*) ()
#5 0x0000000000c1cd21 in KSyncEvent::TraceMsg(boost::shared_ptr<TraceBuffer<SandeshTrace> >, std::string, int, std::string, std::string, std::string) ()
#6 0x0000000000c2017d in KSyncObject::NotifyEvent(KSyncEntry*, KSyncEntry::KSyncEvent) ()
#7 0x0000000000c2191e in KSyncDBObject::Notify(DBTablePartBase*, DBEntryBase*) ()
#8 0x0000000000f0092a in DBTableBase::RunNotify(DBTablePartBase*, DBEntryBase*) ()
#9 0x0000000000f038aa in DBTablePartBase::RunNotify() ()
#10 0x0000000000eff0a7 in DBPartition::QueueRunner::Run() ()
#11 0x0000000000ff1565 in TaskImpl::execute() ()
#12 0x00007fa426b48e52 in ?? () from /usr/lib/libtbb.so.2
#13 0x00007fa426b44c2d in ?? () from /usr/lib/libtbb.so.2
#14 0x00007fa426b440db in ?? () from /usr/lib/libtbb.so.2
#15 0x00007fa426b41c1f in ?? () from /usr/lib/libtbb.so.2
#16 0x00007fa426b41e59 in ?? () from /usr/lib/libtbb.so.2
#17 0x00007fa426d5fe9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#18 0x00007fa42604c3fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#19 0x0000000000000000 in ?? ()

Note: this happened after running a command on docker container, command was successful but host lost connectivity.
later we found this core.

logs @mayamruga-E71:/home/bhushana/Documents/technical/bugs/<bugId>