It seems that we cannot get the proper bt of the assert from the contrail-collector core - core.contrail-collec.2768.ubuntu-cn.1431399756 (gdb) info threads Id Target Id Frame 9 Thread 0x7f55c1f5e700 (LWP 3226) 0x00007f55c83bcf45 in readdir64 () from /lib/x86_64-linux-gnu/libc.so.6 8 Thread 0x7f55c235f700 (LWP 3220) 0x00007f55c83f43e9 in __vsyslog_chk () from /lib/x86_64-linux-gnu/libc.so.6 7 Thread 0x7f55c1b5d700 (LWP 3227) 0x00007f55c83f43e9 in __vsyslog_chk () from /lib/x86_64-linux-gnu/libc.so.6 6 Thread 0x7f55c2760700 (LWP 3219) 0x00007f55c83f43e9 in __vsyslog_chk () from /lib/x86_64-linux-gnu/libc.so.6 5 Thread 0x7f55c135b700 (LWP 3229) 0x00007f55c83f43e9 in __vsyslog_chk () from /lib/x86_64-linux-gnu/libc.so.6 4 Thread 0x7f55c2b61700 (LWP 3218) 0x00007f55c9ae43bd in read () from /lib/x86_64-linux-gnu/libpthread.so.0 3 Thread 0x7f55c175c700 (LWP 3228) 0x00007f55c83f43e9 in __vsyslog_chk () from /lib/x86_64-linux-gnu/libc.so.6 2 Thread 0x7f55c2f62700 (LWP 3217) 0x00007f55c83f43e9 in __vsyslog_chk () from /lib/x86_64-linux-gnu/libc.so.6 * 1 Thread 0x7f55cb41d100 (LWP 2768) 0x00007f55c8335cc9 in __open_catalog () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) thread apply all bt Thread 9 (Thread 0x7f55c1f5e700 (LWP 3226)): #0 0x00007f55c83bcf45 in readdir64 () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007f55c83bcc96 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 #2 0x00007f55c1f5cd70 in ?? () #3 0x00007f55a80010a0 in ?? () #4 0x0000000000000000 in ?? () Thread 8 (Thread 0x7f55c235f700 (LWP 3220)): #0 0x00007f55c83f43e9 in __vsyslog_chk () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x0000000000000000 in ?? () Thread 7 (Thread 0x7f55c1b5d700 (LWP 3227)): #0 0x00007f55c83f43e9 in __vsyslog_chk () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x0000000000000000 in ?? () Thread 6 (Thread 0x7f55c2760700 (LWP 3219)): #0 0x00007f55c83f43e9 in __vsyslog_chk () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x0000000000000000 in ?? () Thread 5 (Thread 0x7f55c135b700 (LWP 3229)): #0 0x00007f55c83f43e9 in __vsyslog_chk () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x0000000000000000 in ?? () Thread 4 (Thread 0x7f55c2b61700 (LWP 3218)): #0 0x00007f55c9ae43bd in read () from /lib/x86_64-linux-gnu/libpthread.so.0 #1 0x000000000073ee10 in read (__nbytes=16384, __buf=0x7f55c2b5b230, __fd=) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44 #2 redisBufferRead (c=c@entry=0x7f55bc01a480) at build/third_party/hiredis/src/hiredis.c:1078 #3 0x000000000073f265 in redisGetReply (c=0x7f55bc01a480, reply=0x7f55c2b5f2a0) at build/third_party/hiredis/src/hiredis.c:1164 #4 0x000000000073f94f in __redisBlockForReply (c=0x7f55bc01a480) at build/third_party/hiredis/src/hiredis.c:1259 #5 redisvCommand (ap=0x7f55c2b5f2a8, format=, c=0x7f55bc01a480) at build/third_party/hiredis/src/hiredis.c:1269 #6 redisCommand (c=0x7f55bc01a480, format=) at build/third_party/hiredis/src/hiredis.c:1276 #7 0x00000000004e3d50 in RedisProcessorExec::SyncGetSeq (redis_ip=..., redis_port=, redis_password=..., source=..., node_type=..., module=..., instance_id=..., seqReply=...) at controller/src/analytics/redis_processor_vizd.cc:169 #8 0x0000000000521de7 in OpServerProxy::GetSeq (this=0x28ea4d0, source=..., node_type=..., module=..., instance_id=..., seqReply=...) at controller/src/analytics/OpServerProxy.cc:719 #9 0x00000000004bb107 in Collector::ReceiveSandeshCtrlMsg (this=0x28f3c80, state_machine=, session=, sandesh=) at controller/src/analytics/collector.cc:283 #10 0x0000000000612a50 in SandeshServerConnection::ProcessSandeshCtrlMessage (this=this@entry=0x2941ae0, msg=..., header=..., sandesh_name=..., header_offset=header_offset@entry=735) at tools/sandesh/library/cpp/sandesh_connection.cc:169 #11 0x0000000000611a6e in ssm::ServerInit::react (this=this@entry=0x7f55ac001f40, event=...) at tools/sandesh/library/cpp/sandesh_state_machine.cc:303 #12 0x00000000006121d5 in react (eventType=, evt=..., stt=...) at /usr/include/boost/statechart/custom_reaction.hpp:42 #13 local_react_impl, boost::statechart::custom_reaction, boost::statechart::in_state_reaction >, boost::statechart::simple_state, (boost::statechart::history_mode)0> > (eventType=0xaca7a0 ::idProvider_>, evt=..., stt=...) at /usr/include/boost/statechart/simple_state.hpp:816 #14 local_react, boost::statechart::custom_reaction, boost::statechart::in_state_reaction > > (eventType=0xaca7a0 ::idProvider_>, evt=..., this=0x7f55ac001f40) at /usr/include/boost/statechart/simple_state.hpp:851 #15 local_react_impl, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::in_state_reaction >, boost::statechart::simple_state, (boost::statechart::history_mode)0> > (eventType=, evt=..., stt=...) at /usr/include/boost/statechart/simple_state.hpp:820 #16 local_react, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::in_state_reaction > > (eventType=, evt=..., this=) at /usr/include/boost/statechart/simple_state.hpp:851 #17 local_react_impl, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::in_state_reaction >, boost::statechart::simple_state, (boost::statechart::history_mode)0> > ( eventType=0xaca7a0 ::idProvider_>, evt=..., stt=...) at /usr/include/boost/statechart/simple_state.hpp:820 #18 local_react, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::in_state_reaction > > ( eventType=0xaca7a0 ::idProvider_>, evt=..., this=0x7f55ac001f40) at /usr/include/boost/statechart/simple_state.hpp:851 #19 boost::statechart::simple_state, (boost::statechart::history_mode)0>::react_impl (this=0x7f55ac001f40, evt=..., eventType=0xaca7a0 ::idProvider_>) at /usr/include/boost/statechart/simple_state.hpp:489 #20 0x000000000060fd6b in operator() (this=) at /usr/include/boost/statechart/state_machine.hpp:87 #21 operator(), boost::statechart::detail::rtti_policy>, boost::statechart::event_base, void const*>, boost::statechart::state_machine::exception_event_handler> (this=0x2946c68, action=...) at /usr/include/boost/statechart/null_exception_translator.hpp:33 #22 boost::statechart::state_machine, boost::statechart::null_exception_translator>::send_event (this=0x2946c10, evt=...) at /usr/include/boost/statechart/state_machine.hpp:889 #23 0x0000000000608325 in process_event (evt=..., this=0x2946c10) at /usr/include/boost/statechart/state_machine.hpp:275 ---Type to continue, or q to quit--- #24 SandeshStateMachine::DequeueEvent (this=0x2946c10, ec=...) at tools/sandesh/library/cpp/sandesh_state_machine.cc:719 #25 0x000000000060f217 in operator() (a0=, this=0x7f55c2b60130) at /usr/include/boost/function/function_template.hpp:767 #26 QueueTaskRunner >::RunQueue (this=0x7f55bc0018c0) at controller/src/base/queue_task.h:74 #27 0x00000000006ff880 in TaskImpl::execute (this=0x7f55c333f940) at controller/src/base/task.cc:232 #28 0x00007f55c98c1b3a in ?? () from /usr/lib/libtbb.so.2 #29 0x00007f55c98bd816 in ?? () from /usr/lib/libtbb.so.2 #30 0x00007f55c98bcf4b in ?? () from /usr/lib/libtbb.so.2 #31 0x00007f55c98b90ff in ?? () from /usr/lib/libtbb.so.2 #32 0x00007f55c98b92f9 in ?? () from /usr/lib/libtbb.so.2 #33 0x00007f55c9add182 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #34 0x00007f55c83fa00d in qfcvt_r () from /lib/x86_64-linux-gnu/libc.so.6 #35 0x0000000000000000 in ?? () Thread 3 (Thread 0x7f55c175c700 (LWP 3228)): #0 0x00007f55c83f43e9 in __vsyslog_chk () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x0000000000000000 in ?? () Thread 2 (Thread 0x7f55c2f62700 (LWP 3217)): #0 0x00007f55c83f43e9 in __vsyslog_chk () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x0000000000000000 in ?? () Thread 1 (Thread 0x7f55cb41d100 (LWP 2768)): #0 0x00007f55c8335cc9 in __open_catalog () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x79745f65756c6176 in ?? () #2 0x554e5f434c5f6570 in ?? () #3 0x5d305b434952454d in ?? () #4 0x0000000000002929 in ?? () #5 0x7328203c20746e63 in ?? () #6 0x5f2820666f657a69 in ?? () #7 0x65756c61765f6c6e in ?? () #8 0x434c5f657079745f in ?? () #9 0x2f2029454d49545f in ?? () #10 0x20666f657a697320 in ?? () #11 0x6c61765f6c6e5f28 in ?? () #12 0x5f657079745f6575 in ?? () #13 0x5b454d49545f434c in ?? () #14 0x0000000029295d30 in ?? () #15 0x7328203c20746e63 in ?? () #16 0x5f2820666f657a69 in ?? () #17 0x65756c61765f6c6e in ?? () #18 0x434c5f657079745f in ?? () #19 0x4554414c4c4f435f in ?? () #20 0x657a6973202f2029 in ?? () #21 0x5f6c6e5f2820666f in ?? () #22 0x79745f65756c6176 in ?? () #23 0x4f435f434c5f6570 in ?? () #24 0x5d305b4554414c4c in ?? () #25 0x0000000000002929 in ?? () #26 0x7328203c20746e63 in ?? () #27 0x5f2820666f657a69 in ?? () #28 0x65756c61765f6c6e in ?? () #29 0x434c5f657079745f in ?? () #30 0x524154454e4f4d5f in ?? () #31 0x7a6973202f202959 in ?? () #32 0x6c6e5f2820666f65 in ?? () #33 0x745f65756c61765f in ?? () #34 0x4d5f434c5f657079 in ?? () #35 0x5b59524154454e4f in ?? () #36 0x0000000029295d30 in ?? () #37 0x7328203c20746e63 in ?? () #38 0x5f2820666f657a69 in ?? () #39 0x65756c61765f6c6e in ?? () ---Type to continue, or q to quit--- #40 0x434c5f657079745f in ?? () #41 0x4547415353454d5f in ?? () #42 0x7a6973202f202953 in ?? () #43 0x6c6e5f2820666f65 in ?? () #44 0x745f65756c61765f in ?? () #45 0x4d5f434c5f657079 in ?? () #46 0x5b53454741535345 in ?? () #47 0x0000000029295d30 in ?? () #48 0x7328203c20746e63 in ?? () #49 0x5f2820666f657a69 in ?? () #50 0x65756c61765f6c6e in ?? () #51 0x434c5f657079745f in ?? () #52 0x202952455041505f in ?? () #53 0x666f657a6973202f in ?? () #54 0x61765f6c6e5f2820 in ?? () #55 0x657079745f65756c in ?? () #56 0x455041505f434c5f in ?? () #57 0x000029295d305b52 in ?? () #58 0x7328203c20746e63 in ?? () #59 0x5f2820666f657a69 in ?? () #60 0x65756c61765f6c6e in ?? () #61 0x434c5f657079745f in ?? () #62 0x2f2029454d414e5f in ?? () #63 0x20666f657a697320 in ?? () #64 0x6c61765f6c6e5f28 in ?? () #65 0x5f657079745f6575 in ?? () #66 0x5b454d414e5f434c in ?? () #67 0x0000000029295d30 in ?? () #68 0x7328203c20746e63 in ?? () #69 0x5f2820666f657a69 in ?? () #70 0x65756c61765f6c6e in ?? () #71 0x434c5f657079745f in ?? () #72 0x535345524444415f in ?? () #73 0x657a6973202f2029 in ?? () #74 0x5f6c6e5f2820666f in ?? () #75 0x79745f65756c6176 in ?? () #76 0x44415f434c5f6570 in ?? () #77 0x5d305b5353455244 in ?? () #78 0x0000000000002929 in ?? () #79 0x7328203c20746e63 in ?? () #80 0x5f2820666f657a69 in ?? () #81 0x65756c61765f6c6e in ?? () #82 0x434c5f657079745f in ?? () #83 0x4f4850454c45545f in ?? () #84 0x6973202f2029454e in ?? () #85 0x6e5f2820666f657a in ?? () #86 0x5f65756c61765f6c in ?? () #87 0x5f434c5f65707974 in ?? () #88 0x4e4f4850454c4554 in ?? () #89 0x000029295d305b45 in ?? () #90 0x7328203c20746e63 in ?? () #91 0x5f2820666f657a69 in ?? () #92 0x65756c61765f6c6e in ?? () #93 0x434c5f657079745f in ?? () #94 0x4552555341454d5f in ?? () #95 0x202f2029544e454d in ?? () #96 0x2820666f657a6973 in ?? () #97 0x756c61765f6c6e5f in ?? () #98 0x4c5f657079745f65 in ?? () #99 0x52555341454d5f43 in ?? () #100 0x5d305b544e454d45 in ?? () #101 0x0000000000002929 in ?? () ---Type to continue, or q to quit--- #102 0x7328203c20746e63 in ?? () #103 0x5f2820666f657a69 in ?? () #104 0x65756c61765f6c6e in ?? () #105 0x434c5f657079745f in ?? () #106 0x4649544e4544495f in ?? () #107 0x294e4f4954414349 in ?? () #108 0x6f657a6973202f20 in ?? () #109 0x765f6c6e5f282066 in ?? () #110 0x7079745f65756c61 in ?? () #111 0x4544495f434c5f65 in ?? () #112 0x544143494649544e in ?? () #113 0x29295d305b4e4f49 in ?? () #114 0x0000000000000000 in ?? () (gdb)