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Cisco Bug: CSCvv48780 - Nexus 9K reboots with "evms hap reset" when evms debug is run and eem is configured at the same time

Last Modified

Sep 18, 2020

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases

9.3(5)

Description (partial)

Symptom:
evms core generated

`show cores`
VDC  Module  Instance  Process-name     PID       Date(Year-Month-Day Time)
---  ------  --------  ---------------  --------  -------------------------
1    1       1         evms             27713     2020-08-20 20:16:51
1    1       1         evms             2103      2020-08-20 20:16:51

`show version`
Last reset at 604555 usecs after Thu Aug 20 20:14:44 2020
  Reason: Reset triggered due to HA policy of Reset
  System version: 9.3(3)
  Service: evms hap reset		<<<<<<<<<<<

`show logging nvram`

%$ VDC-1 %$ %SYSMGR-2-SERVICE_CRASHED: Service "evms" (PID 2103) hasn't caught signal 11 (core will be saved).
%$ VDC-1 %$ %SYSMGR-2-SERVICE_CRASHED: Service "evms" (PID 27246) hasn't caught signal 11 (core will be saved).
%$ VDC-1 %$ %SYSMGR-2-SERVICE_CRASHED: Service "evms" (PID 27713) hasn't caught signal 11 (core will be saved).
%$ VDC-1 %$ %SYSMGR-2-SERVICE_CRASHED: Service "evms" (PID 27296) hasn't caught signal 11 (core will be saved).
%$ VDC-1 %$ %SYSMGR-2-HAP_FAILURE_SUP_RESET: Service "evms" in vdc 1 has had a hap failure  <<<<<<<<<<<

`show logging onboard exception-log`

exception information --- exception instance 1 ----
Module Slot Number: 0
Device Id         : 134
Device Name       : System Manager
Device Errorcode  : 0x0000019b
Device ID         : 00 (0x00)
Device Instance   : 00 (0x00)
Dev Type (HW/SW)  : 01 (0x01)
ErrNum (devInfo)  : 155 (0x9b)
System Errorcode  : 0x401e0089 Service in VDC has had a hap-reset
Error Type        : FATAL error
PhyPortLayer      : 0x0
Port(s) Affected  : none
Error Description : evms hap reset			<<<<<<<<<<<<<<<<
DSAP              : 0 (0x0)
UUID              : 1 (0x1)
Time              : Thu Aug 20 20:14:44 2020
                    (Ticks: 5F3ED9B4 jiffies) 

switch# show system reset-reason

----- reset reason for module 1 (from Supervisor in slot 1) ---
1) At 604555 usecs after Thu Aug 20 20:14:44 2020
    Reason: Reset triggered due to HA policy of Reset
    Service: evms hap reset				<<<<<<<<<<<<<<<<
    Version: 9.3(3)

Conditions:
On N9K while evms debug is on, trying to configure or change an eem triggers switch reboot with "evms hap reset"
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