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Cisco Bug: CSCup37236 - Assert egtpc_handle_user_sap_event() pmm_egtp_abort_session_request()

Last Modified

Dec 25, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

16.0(1) 17.0.0.56029

Description (partial)

Symptom:
Crash with the foll stack trace will be seen

Assertion failure at sess/egtp/egtpc/egtpc_interface.c:123
  Function: egtpc_handle_user_sap_event()
  Expression: (((tun_rec) != ((void *)0)) && ((tun_rec)->magic == (('T'<<24) | ('U'<<16) | ('N'<<8) | ('R'))) && ((tun_rec)->active == (1)))
  Proclet: sessmgr (f=87000,i=33)
  Process: card=6 cpu=0 arch=X pid=6318 cpu=~5% argv0=sessmgr
  Crash time: 2014-Jun-13+12:04:47 UTC
  Recent errno: 115 Operation now in progress
  Stack (97128@0xfffe6000):
    [ffffe430/X] __kernel_vsyscall() sp=0xfffe6d88
    [0abb33af/X] sn_assert() sp=0xfffe6dc8
    [077acec7/X] egtpc_handle_user_sap_event() sp=0xfffe73a8
    [06ae5792/X] pmm_egtp_abort_session_request() sp=0xfffe75c8
    [06b3f250/X] pmm_util_abort_all_module() sp=0xffff06b8
    [06b44d08/X] pmm_clear_subscriber() sp=0xffff0c08
    [06b51ca8/X] pmm_handle_path_failure_s3_s16.isra.304() sp=0xffff0e58
    [06b77bb6/X] sessmgr_sgsn_pmm_s4_sgsn_egtpc_callback() sp=0xffffcdf8
    [06cbacdc/X] sessmgr_s4_sgsn_egtpc_callback() sp=0xffffce88
    [077a54d5/X] egtpc_tun_abort() sp=0xffffd268
    [077ad7d7/X] egtpc_nlp_tun_abort_hndler() sp=0xffffd4a8
    [03cad13c/X] sessmgr_nlp_mqueue_timer_handler() sp=0xffffd518
    [05184720/X] tlib_serv() sp=0xffffd568
    [051843cc/X] tlib_tmr_tick() sp=0xffffd5b8
    [045de992/X] snx_timer_service() sp=0xffffd5c8
    [045dc89f/X] snx_fast_service() sp=0xffffd5f8
    [05d6d14a/X] sessmgr_snx_tick_callback() sp=0xffffd638
    [0ac51799/X] sn_loop_run() sp=0xffffdae8
    [0a9f4cfd/X] main() sp=0xffffdb58

Conditions:
EGTP s3 Path failure has happened when new sgsn is waiting for relocation-comp from target rnc and 
hence subscriber needs to be cleared.
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