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Cisco Bug: CSCvv72378 - sessmgr restart on all UPs after removing action priorities in rulebase

Last Modified

Oct 12, 2020

Products (1)

  • Cisco PGW Packet Data Network Gateway

Known Affected Releases

21.19.n4

Description (partial)

Symptom:
When removing many action priorities from a rulebase in the active CP, we faced a sessmgr restart on all data-UP and on active IMS-UP. And also sessmgr + sessctrl restart on the standby UP-IMS.

Fatal Signal 11: 11
  PC: [04a656a4/X] smgr_uplane_handle_config_action_priority()
  Faulty address: 0x8
  Signal from: kernel
  Signal detail: address not mapped to object
  Process: card=1 cpu=0 arch=X pid=5110 argv0=sessmgr
  Cra time: 2020-Sep-11+15:21:53 UTC
  Recent errno: 11 Resource temporarily unavailable
  Build_number: 77301
  Stack (11320@0x0xfffd1000):
    [04a656a4/X] smgr_uplane_handle_config_action_priority() sp=0xfffd1618
    [0cf18b68/X] sn_msg_arriving_handle() sp=0xfffd3708
    [0cef7476/X] sn_loop_run() sp=0xfffd3bb8
    [0cbcc625/X] main() sp=0xfffd3c28
  Registers:

Conditions:
customer is testing 4G CUPS solution in their lab. 
It is an Openstack OSP13 UCS-C deployment. 
CP (Qvpc-SI) in ICSR mode
UP-Data (for data traffic) no redundancy 
UP-IMS (for Volte traffic) in ICSR mode ? Pure-S mode
version: 21.19.n4
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