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Cisco Bug: CSCun23335 - Assert egtpc_evt_handler_func.c:976 egtpc_handle_resume_proc_cmd_evt()

Last Modified

Jan 29, 2017

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

15.0(17)

Description (partial)

Symptom:
Sessmgr crash with the following detaiils:

Assertion failure at sess/egtp/egtpc/egtpc_evt_handler_func.c:976
  Function: egtpc_handle_resume_proc_cmd_evt()

  Expression: (((ebi_info.p_b_rec[i]) != ((void *)0)) && ((ebi_info.p_b_rec[i])->magic == (('B'<<24) | ('R'<<16) | ('E'<<8) | ('C'))) && ((eb
  Proclet: sessmgr (f=87000,i=274)
  Process: card=16 cpu=0 arch=X pid=9678 cpu=~8% argv0=sessmgr
  Crash time: 2014-Feb-16+14:33:32 UTC
  Recent errno: 11 Resource temporarily unavailable
  Stack (125880@0xfffdf000):
    [f7e285a1/X] libc.so.6/kill() sp=0xfffdf128
    [0aa52423/X] sn_assert() sp=0xfffdf158
    [073bf1b5/X] egtpc_handle_resume_proc_cmd_evt() sp=0xfffdf298
    [07369fb0/X] egtpc_handle_user_sap_event() sp=0xfffdf8b8
    [0779c9ef/X] mme_app_send_egtp_msg() sp=0xfffdf8e8
    [077ac4a6/X] mme_app_send_suspend_resume_cmd() sp=0xfffdfaa8
    [077e0faf/X] mme_create_update_brr_handle_resume() sp=0xfffeb648
    [076ff6d9/X] mme_fsm_event_handler() sp=0xfffebaa8
    [077e4bd3/X] mme_event_handler_brr_procedure() sp=0xfffebae8
    [077008f4/X] mme_procedure_handle_event() sp=0xfffebb28
    [0770066f/X] mme_resume_procedure() sp=0xfffebb58
    [0776c6a2/X] mme_resume_pending_procedures_for_ue() sp=0xfffebc08
    [077409e4/X] mme_disp_handle_emm_evt() sp=0xfffebce8
    [07747b16/X] mme_disp_attached_handle_s11_msg() sp=0xfffebe88
    [076ff6d9/X] mme_fsm_event_handler() sp=0xfffec2e8
    [0779cf39/X] mme_app_handle_events_from_egtpc_app() sp=0xfffed118
    [0741ed8e/X] egtpc_sap_dispatch_routine() sp=0xfffed148
    [073a8864/X] egtpc_send_cfm_evt() sp=0xfffed798
    [073d768f/X] egtpc_handle_modify_bearer_rsp_msg() sp=0xfffedc38
    [07374e27/X] egtpc_handle_tun_n_mob_mgmt_message() sp=0xfffeddd8
    [0736c6d5/X] egtpc_handle_gtp_message() sp=0xffffaa08
    [03f3b2a1/X] sessmgr_egtp_handle_gtpc_message() sp=0xffffb318
    [03f3a81c/X] sessmgr_egtp_dmed_rx_cb() sp=0xffffb3b8
    [05d7273d/X] sessmgr_receive_ipv4udp_packets() sp=0xffffb3e8

Conditions:
SW Version: 15.0(53496)
Combo:  MME/SGSN
Collision with S11 Update Bearer Request for a dedicated bearer, followed by a Path Switch Request triggering X2 handover, followed by a Delete Bearer Request for the same dedicated bearer while handover is in progress.
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