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Cisco Bug: CSCvs72118 - VPP Assert in the PGW causing card migration and Customer impact

Last Modified

Oct 02, 2020

Products (2)

  • Cisco ASR 5000 Series
  • Cisco ASR 5500

Known Affected Releases

21.14.16 21.14.b13 21.14.b14 21.15.21

Description (partial)

Symptom:
VPP Assert causing card migration and hung data sessions with following signature:
<div style="font-family:monospace;background-color: #f5f5f5;border-radius: 4px;padding: 6px;">Fatal Signal 11: Segmentation fault
  Faulty address: 0x7680eef40
  Signal from: kernel
  Signal detail: address not mapped to object
  Process: card=9 cpu=2 arch=X pid=7257 argv0=vpp
  Cr@sh time: 2020-Jan-16+18:05:14 UTC
  Build_number: 
  Threads:
    Thread 7324
    ->[/usr/sbin64/vpp(sn_assert_signal_handler()+0x11b9) [0x004c7a99]]
      [(libvlib.so.18.10/unix_signal_handler()+0x144) [0x7fe7ad00ad94]]
      [/lib64/libpthread.so.0(+0xfb50) [0x7fe7acb83b50]]
      [/usr/lib64/vpp_plugins/dpdk_plugin.so(+0x20f1ae) [0x7fe76ac7a1ae]]
      [/usr/lib64/vpp_plugins/dpdk_plugin.so(+0x213620) [0x7fe76ac7e620]]
      [/usr/lib64/vpp_plugins/dpdk_plugin.so(dpdk_input_node_fn_avx2+0x1ec) [0x7fe76afda99c]]
      [(libvlib.so.18.10/vlib_worker_loop()+0x4ee) [0x7fe7acfe238e]]
      [(libvppinfra.so.18.10/clib_calljmp()+0x18) [0x7fe7ac91c110]]
    ----------------------------------------
</div>

Conditions:
VPP enabled in the PGW.
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