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Cisco Bug: CSCut64551 - Session Manager Restart: mme_app_is_proc_s1ho_to_4g()

Last Modified

Dec 26, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

14.0(53)

Description (partial)

Symptom:
The following session manager crash was observed on MME node:

Friday March 27 18:40:25 EST 2015
********************* CRASH #10 ***********************
Build: 14.0(59025)

Fatal Signal 11: Segmentation fault
  PC: [070dd148/X] mme_app_is_proc_s1ho_to_4g()
  Faulty address: 0x10
  Signal from: kernel
  Signal detail: address not mapped to object
  Process: card=14 cpu=0 arch=X pid=4160 cpu=~7% argv0=sessmgr
  Crash time: 2015-Mar-25+23:10:16 UTC
  Recent errno: 11 Resource temporarily unavailable
  Stack (30840@0xffff6000):
    [070dd148/X] mme_app_is_proc_s1ho_to_4g() sp=0xffff66e8
    [070a7205/X] mme_emm_common_proc_inited_handle_tau_req() sp=0xffff6738
    [07071819/X] mme_fsm_event_handler() sp=0xffff6b98
    [070b0e62/X] mme_disp_handle_emm_evt() sp=0xffff6c88
    [070b768f/X] mme_disp_attached_handle_s1nas_msg() sp=0xffff6d18
    [07071819/X] mme_fsm_event_handler() sp=0xffff7178
    [0706a812/X] nas_access_recv_init_ue() sp=0xffff81a8
    [0706c47f/X] nas_access_recv_msg() sp=0xffff81f8
    [070557ce/X] UzLiSztConInd() sp=0xffff8db8
    [0be1b8ef/X] SzUiSztConInd() sp=0xffff8dd8
    [0be221fe/X] szUiSndConInd() sp=0xffff8e08
    [0be1c976/X] szSmRcvIdleStMsg() sp=0xffff8e58
    [0be1d54a/X] szSmExcMt() sp=0xffff8e88
    [0be0a9d3/X] szLiCOMsgHandler() sp=0xffff8f08
    [0be0a551/X] szLiRcvFromLower() sp=0xffff90f8
    [0be0cd81/X] SzLiSctDatInd() sp=0xffff9258
    [062ad698/X] sn_ccpu_s1ap_handle_data_ind() sp=0xffff92e8
    [03ebeec6/X] sessmgr_mmemgr_data_ind() sp=0xffff9348
    [03ebed1c/X] sessmgr_handle_mmemgr_req_bulk_data_ind() sp=0xffffabe8
    [0a299a0b/X] sn_msg_arriving_handle() sp=0xffffd298
    [0a2775c5/X] sn_loop_run() sp=0xffffd828
    [0a09f9d4/X] main() sp=0xffffd868

Conditions:
If the subscriber attaches to 4G before the procedure is complete, another attach is received and before the ESM info response is received, the SGS paging gets triggered.
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