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Cisco Bug: CSCuw23489 - unexpected reset at sess/egtp/egtpc/egtpc_interface.c:151 after EGTPC path

Last Modified

Dec 26, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

16.4.8 19.2.d0 20.0.0 20.0.v0

Description (partial)

Symptom:
Multiple crashes on the same line with similar traces:

Assertion failure at sess/egtp/egtpc/egtpc_interface.c:151
  Note: Re-entering EGTPC application is currently blocked.The previous event sent by EGTPC application does not allow the application user to issue any further events.
  Function: egtpc_handle_user_sap_event()
  Expression: 0
  Code: CRASH
  Proclet: sessmgr (f=87000,i=71)
  Process: card=12 cpu=0 arch=X pid=7420 cpu=~14% argv0=sessmgr
  Crash time: 2015-Sep-09+09:10:41 UTC
  Recent errno: 11 Resource temporarily unavailable
  Stack (22456@0xffff8000):
    [ffffe430/X] __kernel_vsyscall() 
    sn_assert() 
    egtpc_handle_user_sap_event() 
    mme_app_send_abort_proc_evt()     
    mme_tau_state_awt_s11_rsp_handle_resume_cfm() 
    mme_fsm_event_handler()    
    mme_event_handler_tau_procedure() 
    mme_procedure_handle_event() 
    mme_disp_handle_emm_evt() 
    mme_disp_attached_handle_s11_msg() 
    mme_fsm_event_handler() 
    mme_app_handle_events_from_egtpc_app() 
    egtpc_send_cfm_evt() 
    egtpc_send_cfm_evt_abort_proc_v2() 
    egtpc_abort_active_proc_on_brec_v2() 
    egtpc_sch_tun_sess_abortion() 
    egtpc_handle_peer_path_failure() 
    egtpc_handle_egtpmgr_path_failure_ind() 
    sessmgr_handle_egtpmgr_path_failure_ind() 
    sn_msg_arriving_handle() 
    sn_loop_run()

Conditions:
EGTPC path failure happened just a second before the crashes
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