Guest

Preview Tool

Cisco Bug: CSCuo29082 - Assertion failure at sess/smgr/sessmgr_sef.c:2578

Last Modified

Dec 25, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

15.0

Description (partial)

Symptom:
below assert is observed. in this sceanrio smgr clp is freed and acs trying to send the messsage on this freed clp.

********************* CRASH #03 ***********************
SW Version          : 15.0(53496)

Assertion failure at sess/smgr/sessmgr_sef.c:2578
  Function: sessmgr_sef_usr_dispatch_cb()
  Expression: (((clp)!=((void *)0))&&((clp)->callline_magic == (0x77)))
  Proclet: sessmgr (f=87000,i=49)
  Process: card=13 cpu=0 arch=X pid=5404 cpu=~27% argv0=sessmgr
  Crash time: 2014-Apr-08+18:22:10 UTC
  Recent errno: 11 Resource temporarily unavailable
  Stack (56248@0xffff0000):
    [f7e285a1/X] libc.so.6/kill() sp=0xffff0268
    [0aa52423/X] sn_assert() sp=0xffff0298
    [03688f17/X] sessmgr_sef_usr_dispatch_cb() sp=0xffff02e8
    [07ca336f/X] acsmgr_do_sessmgr_dispatch() sp=0xffff0308
    [07c24e1a/X] Acsmgr_UChkptVar_Open() sp=0xffffd098
    [07c512e8/X] acsmgr_Uchkpt_acs_dcca_info() sp=0xffffd0d8
    [07c25d01/X] acsmgr_clp_send_checkpoint() sp=0xffffd0f8
    [07f4bb23/X] acsmgr_generate_egcdr_custom6() sp=0xffffd428
    [07f41c69/X] acsmgr_generate_gcdr() sp=0xffffd468
    [07e7d750/X] acsmgr_periodic_process_interim_gcdr_queue() sp=0xffffd4b8
    [07e817f2/X] acsmgr_check_50_msec_timer() sp=0xffffd4e8
    [051e8eda/X] tlib_serv() sp=0xffffd528
    [051e8bfb/X] tlib_tmr_tick() sp=0xffffd558
    [046c9a3f/X] snx_timer_service() sp=0xffffd578
    [046c83df/X] snx_fast_service() sp=0xffffd5a8
    [05ca3f84/X] sessmgr_snx_tick_callback() sp=0xffffd5d8
    [0aae2236/X] sn_loop_run() sp=0xffffdb68
    [0a8cbee4/X] main() sp=0xffffdba8

Conditions:
during L2tp IPCP negotiation phase, when ip allocation takes longer time because of delay in network or delay from LNS/LAC then there is possibility that response to the conf req message conf ack is send twice by LNS
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.