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Cisco Bug: CSCvv06798 - PLT-ICUPS : vpp crashes at cuto_plugin.so(cuto_flow_tracker_update_flow

Last Modified

Jul 24, 2020

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

21.20.2.76670

Description (partial)

Symptom:
VPP crashes with the below signature : 

[local]NWCSDEBGPNI-CXGW-ICSR# show crash li
=== ==================== ======== ========== =============== =======================
#           Time         Process  Card/CPU/        SW          HW_SER_NUM
                                     PID         VERSION       MIO / Crash Card
=== ==================== ======== ========== =============== =======================
 
1   2020-Jul-17+15:25:45 vpp      08/2/07267 21.20.2.76670   SAD152400ED/SAD18530013
2   2020-Jul-17+20:04:18 vpp      01/1/07327 21.20.2.76670   SAD152400ED/SAD1853000B
3   2020-Jul-17+20:04:18 vpp      01/0/07392 21.20.2.76670   SAD152400ED/SAD1853000B
 
Total Crashes : 3
 
 
[local]NWCSDEBGPNI-CXGW-ICSR# show crash all
********************* CRASH #01 ***********************
SW Version          : 21.20.2.76670
Similar Crash Count : 1
Time of First Crash : 2020-Jul-17+15:25:45
 
Fatal Signal 11: Segmentation fault
  Faulty address: 0x10fffffffa0
  Signal from: kernel
  Signal detail: address not mapped to object
  Process: card=8 cpu=2 arch=X pid=7267 argv0=vpp
  Crash time: 2020-Jul-17+19:25:45 UTC
  Build_number: 
  Threads:
    Thread 7300
    ->[/usr/sbin64/vpp(sn_assert_signal_handler()+0x11a5) [0x004be0a5]]
      [(libvlib.so.19.04.3/unix_signal_handler()+0x2df) [0x7f4070365bef]]
      [/lib64/libpthread.so.0(+0xfb50) [0x7f406fea4b50]]
      [/usr/lib64/vpp_plugins/cuto_plugin.so(cuto_flow_tracker_update_flow+0xbc) [0x7f3f6e2c331c]]
      [/usr/lib64/vpp_plugins/cuto_plugin.so(+0x1181e) [0x7f3f6e2ba81e]]
      [(libvlib.so.19.04.3/dispatch_pending_node()+0x15d) [0x7f407031d54d]]
      [(libvlib.so.19.04.3/vlib_worker_loop()+0xa3f) [0x7f407031efdf]]
      [(libvppinfra.so.19.04.3/clib_calljmp()+0x18) [0x7f406fc344ac]]
    ----------------------------------------
    Thread 7267
      [(libvlib.so.19.04.3/unix_signal_handler()+0x31d) [0x7f4070365c2d]]
      [/lib64/libpthread.so.0(+0xfb50) [0x7f406fea4b50]]
      [/usr/lib64/vpp_plugins/cuto_plugin.so(+0x26b90) [0x7f3f6e2cfb90]]
      [/usr/lib64/vpp_plugins/cuto_plugin.so(on_vapi_cmd+0x864) [0x7f3f6e2d0644]]
      [(libvnet.so.19.04.3/fp_agent_node_fn()+0x2d4f) [0x7f4070cc2e7f]]
      [(libvlib.so.19.04.3/dispatch_pending_node()+0x15d) [0x7f407031d54d]]
      [(libvlib.so.19.04.3/vlib_main()+0xaa2) [0x7f4070321062]]
      [(libvlib.so.19.04.3/thread0()+0x23) [0x7f4070364af3]]
      [(libvppinfra.so.19.04.3/clib_calljmp()+0x18) [0x7f406fc344ac]]
    ----------------------------------------
    Thread 7272
      [(libvlib.so.19.04.3/unix_signal_handler()+0x31d) [0x7f4070365c2d]]
      [/lib64/libpthread.so.0(+0xfb50) [0x7f406fea4b50]]
      [(libc.so.6/syscall()+0x19) [0x7f406eb3d8e9]]
      [/usr/sbin64/vpp(epoll_wait()+0x1a) [0x004c045a]]
      [/usr/lib64/vpp_plugins/dpdk_plugin.so(+0x1180b4) [0x7f3f6d4b00b4]]
      [/lib64/libpthread.so.0(+0x7f9b) [0x7f406fe9cf9b]]
      [(libc.so.6/__clone()+0x6d) [0x7f406eb41c7d]]
    ----------------------------------------

Conditions:
Callmodel along with redundancy events such as Unplanned DPC2 migrations, MIO migrations and task kills in a loop
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