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Cisco Bug: CSCus35798 - Fatal Signal 11: Seg fault PC: sessmgr_pdsn_event_data_dispatch()

Last Modified

Nov 28, 2017

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

17.1.1.58465

Description (partial)

Symptom:
Session manager crashes after running the call model for 2+ days. 

Fatal Signal 11: Segmentation fault
  PC: [03893b80/X] sessmgr_pdsn_event_data_dispatch()
  Faulty address: 0xe0975176
  Signal from: kernel
  Signal detail: address not mapped to object
  Process: card=14 cpu=0 arch=X pid=6108 cpu=~6% argv0=sessmgr
  Crash time: 2015-Jul-21+18:50:30 UTC
  Recent errno: 11 Resource temporarily unavailable
  Stack (6072@0xffffc000):
    [03893b80/X] sessmgr_pdsn_event_data_dispatch() sp=0xffffc1e8
    [048d3661/X] snx_hsgwdrv_event_data_dispatch() sp=0xffffc238
    [048bf620/X] VSNPInput() sp=0xffffc3b8
    [0540db63/X] MLPSwitch() sp=0xffffc458
    [05431e9d/X] PPPSwitch() sp=0xffffc668
    [06168853/X] DoSomethingWithData.isra.148() sp=0xffffca58
    [0617ce0a/X] sessmgr_med_rp_a10_data_receive() sp=0xffffd0b8
    [0632fad7/X] sessmgr_med_data_receive() sp=0xffffd238
    [0af8f40c/X] sn_epoll_run_events() sp=0xffffd288
    [0af93b48/X] sn_loop_run() sp=0xffffd738
    [0ad04cad/X] main() sp=0xffffd7a8
  Last Bounce:

Conditions:
Longevity Call model with HSGW/P-PGW, SGW/G-PGW, PDSN/HA, ePDG, GGSN and SAEGW calls, with no redundant events, leading to sessmgr crash.
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