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Cisco Bug: CSCus63500 - Fatal Signal 11: Segmentation fault

Last Modified

Dec 25, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

15.0(933)

Description (partial)

Symptom:
Segmentation fault leading to the sesison manager task restart, with the following signature


Fatal Signal 11: Segmentation fault
  PC: [0aac0000/X] sn_slist_remove_by_key()
  Faulty address: 0x8
  Signal from: kernel
  Signal detail: address not mapped to object
  Process: card=15 cpu=0 arch=X pid=1955 cpu=~47% argv0=linkmgr
  Crash time: 2015-Jan-14+16:12:35 UTC
  Recent errno: 115 Operation now in progress
  Stack (22584@0xffff8000):
    [0aac0000/X] sn_slist_remove_by_key() sp=0xffff82e8
    [064a347d/X] lmgr_sgsn_dealloc_empcr_cb() sp=0xffff8318
    [064a4077/X] lmgr_sgsn_act_dt1() sp=0xffff8768
    [064a430d/X] lmgr_sgsn_handle_dt1_from_peer() sp=0xffff87a8
    [064a4ad5/X] lmgr_sgsn_handle_msg_from_peer() sp=0xffff87e8
    [0646ce3f/X] sn_sgsn_linkmgr_extract_demux_key() sp=0xffff8878
    [06463234/X] SN_cmPkSntUDatInd() sp=0xffff9b68
    [0c50514e/X] ItUiSntUDatInd() sp=0xffff9ba8
    [0c4d4533/X] itUiUDatInd() sp=0xffff9be8
    [0c4d4bfe/X] itMupData() sp=0xffff9c28
    [0c4dbda4/X] itMmhDatInd() sp=0xffffc788
    [0c4eeb53/X] itSmDatInd() sp=0xffffc7b8
    [0c4d28dd/X] ItLiSctDatInd() sp=0xffffc7e8
    [0c66ff4b/X] SbUiSctDatInd() sp=0xffffc828
    [0c61d3e8/X] sbSqInSendUp() sp=0xffffc888
    [0c61e1bb/X] sbSqArrive() sp=0xffffc8b8
    [0c6223d8/X] sbSgAssemble() sp=0xffffc8d8
    [0c636599/X] sbAcRcvData() sp=0xffffc918
    [0c62ce73/X] sbCmDemux() sp=0xffffca18
    [0c622f33/X] sbVaDatInd() sp=0xffffcad8
    [0c61af3c/X] SbLiHitUDatInd() sp=0xffffcb58
    [0644582d/X] linkmgr_rx_sctp_pdu() sp=0xffffcc58
    [06436657/X] linkmgr_med_data_receive() sp=0xffffd258
    [0ab5be11/X] sn_loop_run() sp=0xffffd7e8

Conditions:
congestion on IUPs interface
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