[VPP-710] tcp TCP_TIMER_ESTABLISH timeout_handler occur segment fault

[vvalderrv]

Description

as a client , connect an non-existent address which in the same subnet, when establish timer is timeout , there will be a segment fault in tcp_expired_timers_dispatch. details As follow:

Maybe there is a null pointer here : track=0x38.

TCP_EVT_TIMER_POP_HANDLER has some little issue.

#0 elog_event_data_inline (cpu_time=60947086043199, track=0x38, type=type@entry=0x7ffff7906f60 <_e.25034>, em=0x7ffff7bb25a8 ,

em@entry=0x7ffff7bb28b0 <vlib_thread_main+16>) at /home/wanghui/vpp_git/vpp/build-data/../src/vppinfra/elog.h:303

#1 elog_event_data (em=em@entry=0x7ffff7bb25a8 <vlib_global_main+776>, type=type@entry=0x7ffff7906f60 <_e.25034>, track=0x38,

cpu_time=60947086043199) at /home/wanghui/vpp_git/vpp/build-data/../src/vppinfra/elog.c:68

#2 0x00007ffff748b77c in elog_event_data_not_inline (cpu_time=, track=, type=0x7ffff7906f60 <_e.25034>,

em=<optimized out>) at /home/wanghui/vpp_git/vpp/build-data/../src/vppinfra/elog.h:356

#3 elog_data (track=, type=0x7ffff7906f60 <_e.25034>, em=)

at /home/wanghui/vpp_git/vpp/build-data/../src/vppinfra/elog.h:426

#4 tcp_expired_timers_dispatch (expired_timers=0x7fffb628e24c) at /home/wanghui/vpp_git/vpp/build-data/../src/vnet/tcp/tcp.c:740

#5 0x00007ffff68032a2 in tw_timer_expire_timers_16t_2w_512sl (tw=0x7fffb6304534, now=)

at /home/wanghui/vpp_git/vpp/build-data/../src/vppinfra/tw_timer_template.c:330

#6 0x00007ffff75a5b1c in tcp_update_time (thread_index=0, now=) at /home/wanghui/vpp_git/vpp/build-data/../src/vnet/tcp/tcp.h:498

#7 session_queue_node_fn (vm=0x7ffff7bb22a0 <vlib_global_main>, node=0x7fffb5f19800, frame=)

at /home/wanghui/vpp_git/vpp/build-data/../src/vnet/session/node.c:342

#8 0x00007ffff795f8ab in dispatch_node (last_time_stamp=60947086039767, frame=0x0, dispatch_state=VLIB_NODE_STATE_POLLING,

type=VLIB_NODE_TYPE_INPUT, node=0x7fffb5f19800, vm=0x7ffff7bb22a0 <vlib_global_main>)

at /home/wanghui/vpp_git/vpp/build-data/../src/vlib/main.c:998

#9 vlib_main_or_worker_loop (is_main=1, vm=0x7ffff7bb22a0 <vlib_global_main>) at /home/wanghui/vpp_git/vpp/build-data/../src/vlib/main.c:1499

#10 vlib_main_loop (vm=0x7ffff7bb22a0 <vlib_global_main>) at /home/wanghui/vpp_git/vpp/build-data/../src/vlib/main.c:1621

#11 vlib_main (vm=vm@entry=0x7ffff7bb22a0 <vlib_global_main>, input=input@entry=0x7fffb5ea9fa0)

at /home/wanghui/vpp_git/vpp/build-data/../src/vlib/main.c:1749

#12 0x00007ffff79997f3 in thread0 (arg=140737349624480) at /home/wanghui/vpp_git/vpp/build-data/../src/vlib/unix/main.c:507

#13 0x00007ffff67d5e20 in clib_calljmp () at /home/wanghui/vpp_git/vpp/build-data/../src/vppinfra/longjmp.S:110

#14 0x00007fffffffd270 in ?? ()

#15 0x00007ffff799a289 in vlib_unix_main (argc=, argv=)

at /home/wanghui/vpp_git/vpp/build-data/../src/vlib/unix/main.c:570

#16 0x0000000500000004 in ?? ()

#17 0x662d326c00000010 in ?? ()

#18 0x3a6c6c61632d6477 in ?? ()

#19 0x0000000500642520 in ?? ()

#20 0xf731373000000046 in ?? ()

#21 0xb5ed6d6c00007fff in ?? ()

#22 0x000011ac00007fff in ?? ()

#23 0x0000000000000000 in ?? ()

Assignee

hui wang

Reporter

hui wang

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Original issue: https://jira.fd.io/browse/VPP-710