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Cisco Bug: CSCuo21914 - Fatal Signal 11: Segmentation fault - acsmgr_data_receive_merge_mode

Last Modified

Dec 25, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

14.0(400)

Description (partial)

Symptom:
Cisco PGW Packet Data Network Gateway experience a crash in session manager with a traceback similar to this one: 

sessmgr crash Fatal Signal 11: Segmentation fault at PC: [f7e6b69c/X] libc.so.6/memcpy()

Build: 14.0(51375)

Fatal Signal 11: Segmentation fault
  PC: [f7e6b69c/X] libc.so.6/memcpy()
  Faulty address: 0xddd1e000
  Signal from: kernel
  Signal detail: address not mapped to object
  Process: card=11 cpu=0 arch=X pid=4469 cpu=~33% argv0=sessmgr
  Crash time: 2014-Apr-09+20:55:31 UTC
  Recent errno: 115 Operation now in progress
  Stack (35832@0xffff5000):
    [f7e6b69c/X] libc.so.6/memcpy() sp=0xffff5538
    [07620e06/X] acsmgr_data_receive_merge_mode() sp=0xffff5a58
    [07a60bb6/X] acs_handle_datapath_events_from_sm_interface() sp=0xffff5aa8
    [0343f62d/X] sessmgr_sef_initiate_data_packet_ind() sp=0xffff5b18
    [03420fd9/X] sessmgr_pcc_intf_send_data_packet_ind() sp=0xffff5b58
    [0598fb88/X] sessmgr_pcc_fwd_packet() sp=0xffff5ba8
    [05973b8d/X] sessmgr_ipv4_process_user_pkt() sp=0xffffa738
    [03ebaa71/X] sessmgr_ggsndrv_handle_inbound_data_packet() sp=0xffffae28
    [058ce0c2/X] sessmgr_egtpu_receive_gtpu_packet() sp=0xffffb3e8
    [058d499a/X] sessmgr_med_data_receive() sp=0xffffd618
    [0a2040f1/X] sn_loop_run() sp=0xffffdba8
    [0a02b3f4/X] main() sp=0xffffdbe8

Conditions:
PGW running 14.0(51375) with header enrichment, upon reception of a malformed tcp packet.
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