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Cisco Bug: CSCvu68721 - bfdlc restart after unexpected card switchover

Last Modified

Jun 21, 2020

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

21.14.10

Description (partial)

Symptom:
Unexpected bfdlc restart observed with following stack trace:


Fatal Signal 11: Segmentation fault
  PC: [02ff7c03/X] vpnapi_batch_work_timer()
  Faulty address: 0xdeaddeb5
  Signal from: kernel
  Signal detail: address not mapped to object
  Process: card=3 cpu=0 arch=X pid=7267 cpu=~0% argv0=bfdlc
  time: 2020-Jun-16+07:13:21 UTC
  Recent errno: 115 Operation now in progress
  Build_number: 73408
  Stack (4616@0x0xffaed000):
    [02ff7c03/X] vpnapi_batch_work_timer() sp=0xffaedcd8
    [0ce92762/X] sn_loop_run() sp=0xffaee188
    [0cb85735/X] main() sp=0xffaee1f8
  Registers:

This resulted in a bfd flap.

Conditions:
Observed at unexpected DPC switchover (on a non involved card).
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