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Cisco Bug: CSCvt60108 - sessmgr restart seen in Function: mme_send_s1_ue_release()

Last Modified

Apr 18, 2020

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

21.11.8

Description (partial)

Symptom:
sessmgr restart is seen in 21.11.8 for Function: mme_send_s1_ue_release() with following stack

  Stack (31016@0x0xffc76000):
    [ffffe430/X] __kernel_vsyscall() sp=0xffc76038
    [0c9ed314/X] sn_assert() sp=0xffc76078
    [08a7788f/X] mme_send_s1_ue_release() sp=0xffc76dd8
    [08b3b2d9/X] mme_tau_process_tau_complete() sp=0xffc76e38
    [08b1e738/X] mme_fsm_event_handler() sp=0xffc772f8
    [08b9b9f3/X] mme_event_handler_tau_procedure() sp=0xffc77338
    [08921330/X] mme_procedure_handle_event() sp=0xffc773b8
    [08ba173f/X] mme_disp_handle_emm_evt() sp=0xffc77a58
    [08bb2221/X] mme_disp_attached_handle_s1nas_msg() sp=0xffc77d58
    [08b1e738/X] mme_fsm_event_handler() sp=0xffc78218
    [088f5fae/X] nas_access_recv_uplink_tpt.isra.9() sp=0xffc791b8
    [08900b3b/X] nas_access_recv_msg() sp=0xffc79238
    [088e0f5b/X] UzLiSztDatInd() sp=0xffc79308
    [0f195fb7/X] SzUiSztDatInd() sp=0xffc79328
    [0f19e297/X] szUiSndDatInd() sp=0xffc79398
    [0f19727f/X] szSmRcvEstStMsg() sp=0xffc79428
    [0f180da0/X] szLiCOMsgHandler() sp=0xffc794b8
    [0f181b59/X] szLiRcvFromLower() sp=0xffc79748
    [0f1840b4/X] SzLiSctDatInd() sp=0xffc798a8
    [071589ba/X] sn_ccpu_s1ap_handle_data_ind() sp=0xffc79938
    [049379b9/X] sessmgr_mmemgr_data_ind() sp=0xffc799e8
    [04938160/X] sessmgr_handle_mmemgr_req_bulk_data_ind.part.16() sp=0xffc7b2c8
    [049385ce/X] sessmgr_handle_mmemgr_req_bulk_data_ind() sp=0xffc7b308
    [0caa04e8/X] sn_msg_arriving_handle() sp=0xffc7d3f8

Conditions:
sessmgr restart is seen in 21.11.8 for Function: mme_send_s1_ue_release() with following stack

  Stack (31016@0x0xffc76000):
    [ffffe430/X] __kernel_vsyscall() sp=0xffc76038
    [0c9ed314/X] sn_assert() sp=0xffc76078
    [08a7788f/X] mme_send_s1_ue_release() sp=0xffc76dd8
    [08b3b2d9/X] mme_tau_process_tau_complete() sp=0xffc76e38
    [08b1e738/X] mme_fsm_event_handler() sp=0xffc772f8
    [08b9b9f3/X] mme_event_handler_tau_procedure() sp=0xffc77338
    [08921330/X] mme_procedure_handle_event() sp=0xffc773b8
    [08ba173f/X] mme_disp_handle_emm_evt() sp=0xffc77a58
    [08bb2221/X] mme_disp_attached_handle_s1nas_msg() sp=0xffc77d58
    [08b1e738/X] mme_fsm_event_handler() sp=0xffc78218
    [088f5fae/X] nas_access_recv_uplink_tpt.isra.9() sp=0xffc791b8
    [08900b3b/X] nas_access_recv_msg() sp=0xffc79238
    [088e0f5b/X] UzLiSztDatInd() sp=0xffc79308
    [0f195fb7/X] SzUiSztDatInd() sp=0xffc79328
    [0f19e297/X] szUiSndDatInd() sp=0xffc79398
    [0f19727f/X] szSmRcvEstStMsg() sp=0xffc79428
    [0f180da0/X] szLiCOMsgHandler() sp=0xffc794b8
    [0f181b59/X] szLiRcvFromLower() sp=0xffc79748
    [0f1840b4/X] SzLiSctDatInd() sp=0xffc798a8
    [071589ba/X] sn_ccpu_s1ap_handle_data_ind() sp=0xffc79938
    [049379b9/X] sessmgr_mmemgr_data_ind() sp=0xffc799e8
    [04938160/X] sessmgr_handle_mmemgr_req_bulk_data_ind.part.16() sp=0xffc7b2c8
    [049385ce/X] sessmgr_handle_mmemgr_req_bulk_data_ind() sp=0xffc7b308
    [0caa04e8/X] sn_msg_arriving_handle() sp=0xffc7d3f8
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