Guest

Preview Tool

Cisco Bug: CSCvu04970 - 9800-CL running 16.12.2s wncd crashes due to CPU HOG

Last Modified

Sep 22, 2020

Products (1)

  • Cisco Catalyst 9800 Series Wireless Controllers

Known Affected Releases

16.12.2 17.4.1

Description (partial)

Symptom:
9800 running 16.12.2s may crash due to a CPU HOG with error messages seen in logs:

CPUHOG message was dumped with traceback just before the crash happened.
 
%EVENTLIB-3-CPUHOG: read asyncon 0x560b311e0a98: 1009ms, Traceback=1#a88ccf8e209cc1d6e9e1ead80e4040db   c:7FA28D0A3000+339B0 c:7FA28D0A3000+126940 btrace:7FA2ECD5B000+11309 btrace:7FA2ECD5B000+10F94 c:7FA28D0A3000+1244A3 btrace:7FA2ECD5B     000+10DBA uipeer:7FA2DECF5000+30E52 uipeer:7FA2DECF5000+409D0 uipeer:7FA2DECF5000+40719 cdllib_pi:7FA2DC16A000+2AC109 cdllib_pi:7FA2DC16A000+78A22
%EVENTLIB-3-CPUHOG: read asyncon 0x560b311e0a98: 2009ms, Traceback=1#a88ccf8e209cc1d6e9e1ead80e4040db   c:7FA28D0A3000+339B0 btrace:7FA2ECD5B000+112F0 btrace:7FA2ECD5B000+10F94 c:7FA28D0A3000+1244A3 btrace:7FA2ECD5B000+10DBA uipeer:7FA2DECF5000+30E52 uipeer:7FA2DECF5000+409D0 uipeer:7FA2DECF5000+40719 cdllib_pi:7FA2DC16A000+2AC109 cdllib_pi:7FA2DC16A000+78A22 cdlcore:7FA2DC773000+315A0
%PMAN-3-PROCHOLDDOWN: The process wncd has been helddown (rc 134)
pvp[21951]: %PMAN-0-PROCFAILCRIT: A critical process wncd has failed (rc 134)
%PMAN-3-RELOAD_SYSTEM: Reloading: Peer chassis is not standby ready. System will be reloaded
%STACKMGR-1-RELOAD: Reloading due to reason Critical process crash

Conditions:
execution of command 'show tech wireless' or 'show platform software trace counter tag wncd 0 chassis active R0 hotspot-anqp notice'
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.