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Cisco Bug: CSCur54544 - Assertion failure at sess/mme/mme-app/app/mme_msg_utils.c:4976

Last Modified

Jan 27, 2017

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

15.0(933)

Description (partial)

Symptom:
Assertion failure at sess/mme/mme-app/app/mme_msg_utils.c:4976
  Function: mme_send_s1_ue_release()
  Expression: (((ue_enb_ctxt) != ((void *)0)) && ((ue_enb_ctxt)->uec_magic == (('M'<<24)|('U'<<16)|('E'<<8)|('C'))))
  Proclet: sessmgr (f=87000,i=29)
  Process: card=3 cpu=0 arch=X pid=7522 cpu=~0% argv0=sessmgr

  Crash time: 2014-Nov-03+11:52:14 UTC
  Recent errno: 115 Operation now in progress
  Stack (31640@0xffff6000):
    [f7e285a1/X] libc.so.6/kill() sp=0xffff6a48
    [0aac8253/X] sn_assert() sp=0xffff6a78
    [07762345/X] mme_send_s1_ue_release() sp=0xffff7518
    [07898a2b/X] mme_s1ho_4gto_afrc_handle_s1_down() sp=0xffff7548
    [07750b49/X] mme_fsm_event_handler() sp=0xffff79a8
    [0789fc5a/X] mme_event_handler_s1ho_4g_to_gen_procedure() sp=0xffff79e8
    [07751d64/X] mme_procedure_handle_event() sp=0xffff7a28
    [077942c5/X] mme_disp_handle_emm_evt() sp=0xffff7b08
    [0779a58c/X] mme_disp_attached_handle_s1nas_msg() sp=0xffff7b98
    [07750b49/X] mme_fsm_event_handler() sp=0xffff7ff8
    [0774bae3/X] s1_access_recv_msg() sp=0xffff8c08
    [07737b4e/X] UzLiSztDatInd() sp=0xffff90b8
    [0c73968f/X] SzUiSztDatInd() sp=0xffff90d8
    [0c7402a6/X] szUiSndDatInd() sp=0xffff9108
    [0c73a962/X] szSmRcvEstStMsg() sp=0xffff9178
    [0c73b19a/X] szSmExcMt() sp=0xffff91a8
    [0c728a03/X] szLiCOMsgHandler() sp=0xffff9228
    [0c728551/X] szLiRcvFromLower() sp=0xffff9418
    [0c72ae06/X] SzLiSctDatInd() sp=0xffff9578
    [067dc84e/X] sn_ccpu_s1ap_handle_data_ind() sp=0xffff9608
    [042939a6/X] sessmgr_mmemgr_data_ind() sp=0xffff9668
    [04293806/X] sessmgr_handle_mmemgr_req_bulk_data_ind() sp=0xffffaf08
    [0ab79feb/X] sn_msg_arriving_handle() sp=0xffffd5b8
    [0ab579f5/X] sn_loop_run() sp=0xffffdb48

Conditions:
Assertion failure was noticed on 15.0(57508)

eNB sends UEContextReleaseRequest with cause radioNetwork: tS1relocoverall-expiry (8) to MME during 4G to 3G handover 
This message triggers assertion failure
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