[3.0.2.0-36] Tor-Agent-Crash @ get_right (n=<synthetic pointer>)

[chhandak]

Observed the crash while deleting logical interface in parallel from scale config .

Observed the issue with standard tor-agent binary for build 36

Backtrace
----------
#0 get_right (n=<synthetic pointer>) at /usr/include/boost/intrusive/detail/rbtree_node.hpp:93
#1 next_node (node=<synthetic pointer>) at /usr/include/boost/intrusive/detail/tree_algorithms.hpp:446
#2 next_node (p=<synthetic pointer>) at /usr/include/boost/intrusive/rbtree_algorithms.hpp:352
#3 operator++ (this=<synthetic pointer>) at /usr/include/boost/intrusive/detail/tree_node.hpp:135
#4 Next (entry=0x7f613033ac90, this=0x7f6138b53c40) at controller/src/ksync/ksync_object.cc:117
#5 KSyncObjectManager::Process (this=0x7f614c0021c0, event=0x7f614c3ed270) at controller/src/ksync/ksync_object.cc:1541
#6 0x0000000000b5e23f in operator() (a0=0x7f614c3ed270, this=0x7f61615f9a30) at /usr/include/boost/function/function_template.hpp:767
#7 RunQueue (this=0x7f614c1e0360) at controller/src/base/queue_task.h:87
#8 QueueTaskRunner<KSyncObjectEvent*, WorkQueue<KSyncObjectEvent*> >::Run (this=0x7f614c1e0360) at controller/src/base/queue_task.h:66
#9 0x0000000000f4e62f in TaskImpl::execute (this=0x7f61623cf640) at controller/src/base/task.cc:262
#10 0x00007f6169745b3a in ?? () from /usr/lib/libtbb.so.2
#11 0x00007f6169741816 in ?? () from /usr/lib/libtbb.so.2
#12 0x00007f6169740f4b in ?? () from /usr/lib/libtbb.so.2
#13 0x00007f616973d0ff in ?? () from /usr/lib/libtbb.so.2
#14 0x00007f616973d2f9 in ?? () from /usr/lib/libtbb.so.2
#15 0x00007f6169961182 in start_thread (arg=0x7f61615fa700) at pthread_create.c:312
#16 0x00007f6168c3a47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

root@5b7s5:~# contrail-version | grep vrouter
contrail-vrouter-3.13.0-85-generic 3.0.2.0-36 36
contrail-vrouter-agent 3.0.2.0-36 36
contrail-vrouter-common 3.0.2.0-36 36
contrail-vrouter-init 3.0.2.0-36 36
contrail-vrouter-utils 3.0.2.0-36 36
python-contrail-vrouter-api 3.0.2.0-36 36
python-opencontrail-vrouter-netns 3.0.2.0-36 36

[chhandak (chhandak)]

total 412228
-rwxrwxrwx 1 chhandak epbg 297100797 May 17 10:08 contrail-tor-agent.1
-rwxrwxrwx 1 chhandak epbg 123351040 May 17 10:08 core.contrail-tor-ag.13123.5b7s5.1463465939
chhandak@ubuntu-build04:/auto/cores/1582817$ pwd

[Prabhjot Singh Sethi (prabhjot)]

same root-cause as bug-1572287