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Cisco Bug: CSCus92940 - Assertion Failure in Function: egtpc_handle_user_sap_event()

Last Modified

Dec 25, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

18.0.0.58985 19.0.M0.60544

Description (partial)

Symptom:
Assertion failure at sess/egtp/egtpc/egtpc_interface.c:167
  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=27)
  Process: card=11 cpu=0 arch=X pid=9646 cpu=~2% argv0=sessmgr
  Crash time: 2015-Feb-13+04:26:03 UTC
  Recent errno: 11 Resource temporarily unavailable
  Stack (131071@0xfffb9000, probably truncated):
    [ffffe430/X] __kernel_vsyscall() sp=0xfffb92a8
    [0b08c42f/X] sn_assert() sp=0xfffb92e8
    [07b22d87/X] egtpc_handle_user_sap_event() sp=0xfffb9d08
    [080a5ad5/X] mme_disp_handle_brr_mod_cmd() sp=0xfffc6b38
    [080b27ab/X] mme_brr_proc_complete() sp=0xfffd3978
    [080b97a2/X] mme_abort_brr_procedure() sp=0xfffd39d8
    [07fa0cfb/X] mme_abort_procedure() sp=0xfffd3a58
    [08067a3d/X] mme_pdn_fsm_connected_brr_evt() sp=0xfffd3b08
    [080a38c2/X] mme_fsm_event_handler() sp=0xfffd3fb8
    [080a4c31/X] mme_disp_handle_pdn_evt() sp=0xfffd40b8
    [080da5f5/X] mme_disp_attached_handle_s11_msg() sp=0xfffd4198
    [080a38c2/X] mme_fsm_event_handler() sp=0xfffd4648

Conditions:
This issue is observed to have occured when an overnight call model runs. This crash is seen in the system-test setup.observed during re-entrant call (sending modify bearer command) to EGTP stack when EGTP stack sends abort proc event to MME APP due to the DBR, which is received.
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