Comment 6 for bug 1764506

Same core is seen in

bt:

License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/contrail-vrouter-agent...Reading symbols from /usr/bin/contrail-vrouter-agent...(no dng symbols found)...done.
(no debugging symbols found)...done.

warning: core file may not match specified executable file.
[New LWP 6622]
[New LWP 6625]
[New LWP 6620]
[New LWP 6626]
[New LWP 6628]
[New LWP 6627]
[New LWP 6624]
[New LWP 6612]
[New LWP 6621]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/usr/bin/contrail-vrouter-agent'.
Program terminated with signal 6, Aborted.
#0 0x00007fc58668b277 in raise () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install contrail-vrouter-agent-5.1.0-259.el7.x86_64
(gdb) bt
#0 0x00007fc58668b277 in raise () from /lib64/libc.so.6
#1 0x00007fc58668c968 in abort () from /lib64/libc.so.6
#2 0x00007fc586684096 in __assert_fail_base () from /lib64/libc.so.6
#3 0x00007fc586684142 in __assert_fail () from /lib64/libc.so.6
#4 0x0000000000c852cf in NextHopTable::FreeInterfaceId(unsigned long) ()
#5 0x0000000000c8b79f in NextHop::~NextHop() ()
#6 0x0000000000c9a1d6 in CompositeNH::~CompositeNH() ()
#7 0x0000000000ea0648 in DBTablePartition::Remove(DBEntryBase*) ()
#8 0x0000000000e9b116 in DBPartition::QueueRunner::Run() ()
#9 0x0000000000e7727f in TaskImpl::execute() ()
#10 0x00007fc5872628ca in tbb::internal::custom_scheduler<tbb::internal::IntelSchedulerTraits>::local_wait_for_all(ask&, tbb::task*) ()
   from /lib64/libtbb.so.2
#11 0x00007fc58725e5b6 in tbb::internal::arena::process(tbb::internal::generic_scheduler&) () from /lib64/libtbb.so
#12 0x00007fc58725dc8b in tbb::internal::market::process(rml::job&) ()
   from /lib64/libtbb.so.2
#13 0x00007fc58725b67f in tbb::internal::rml::private_worker::run() ()
   from /lib64/libtbb.so.2
#14 0x00007fc58725b879 in tbb::internal::rml::private_worker::thread_routine(void*) () from /lib64/libtbb.so.2
#15 0x00007fc58747de25 in start_thread () from /lib64/libpthread.so.0
#16 0x00007fc586753bad in clone () from /lib64/libc.so.6

logs:
/cs-shared/bugs/1764506