Symptom:
Build: 14.0(52554)

Assertion failure at sess/sgsn/sgtpcmgr/sgtpcmgr_util.c:686
  Function: sgtpcmgr_find_gtpu_v0_session()
  Expression: (((sgtp_svc) != ((void *)0)) && ((sgtp_svc)->magic == (('S'<< 24) | ('G'<<16) | ('T'<<8) | 'M')))
  Proclet: sgtpcmgr (f=62000,i=2)
  Process: card=2 cpu=0 arch=X pid=4541 cpu=~1% argv0=sgtpcmgr
  Crash time: 2014-Apr-21+11:00:57 UTC
  Recent errno: 11 Resource temporarily unavailable
  Stack (60408@0xfffef000):
    [f7e285a1/X] libc.so.6/kill() sp=0xfffef628
    [0a1d2f87/X] sn_assert() sp=0xfffef658
    [060692c7/X] sgtpcmgr_find_gtpu_v0_session() sp=0xfffef6a8
    [0605c5ad/X] sgtpcmgr_process_error_indication() sp=0xfffefc38
    [0605d008/X] sgtpcmgr_process_received_gtpu_msg() sp=0xffff00e8
    [0603abfa/X] sgtpcmgr_iups_gtpu_socket_read() sp=0xffff0158
    [089df3a9/X] vpnapi_udp_med_packet_receive() sp=0xffff1548
    [089dfa9b/X] vpnapi_udp_med_data_receive() sp=0xffffd618
    [0a249b41/X] sn_loop_run() sp=0xffffdba8
    [0a070d64/X] main() sp=0xffffdbe8

Conditions:
Combo (SGSN+GGSN) running Build: 14.0(52554)