Symptom:
After upgrading to 14.0 MR10. Customer has observed below crashes.

Fatal Signal 11: Segmentation fault
  PC: [06288ee3/X] gprsApnRequestedNotPresent()
  Faulty address: 0xf
  Signal from: kernel
  Signal detail: address not mapped to object
  Process: card=10 cpu=0 arch=X pid=18542 cpu=~10% argv0=sessmgr
  Crash time: 2014-Feb-25+03:43:40 UTC
  Recent errno: 11 Resource temporarily unavailable
  Stack (39928@0xffff4000):
    [06288ee3/X] gprsApnRequestedNotPresent() sp=0xffff4b28
    [0628686f/X] gprsPdpTypeRequestedPresent() sp=0xffff4c58
    [0627e12d/X] gprsPerformApnSelection() sp=0xffff5438
    [062345ba/X] sessmgr_gprs_process_ms_pdp_activation_request() sp=0xffff5498
    [03e54072/X] sessmgr_gprs_fsm_substate_ms_initiated_activate_initial() sp=0xffff54e8
    [03e2de7f/X] sessmgr_gprs_substate_fsm() sp=0xffff5518
    [03e1e131/X] sessmgr_gprs_fsm_substate_initial() sp=0xffff5648
    [03e2dd53/X] sessmgr_gprs_substate_fsm() sp=0xffff5678
    [03e07e5f/X] sessmgr_gprs_fsm_state_ready() sp=0xffff5788
    [03e1b037/X] sessmgr_gprs_fsm() sp=0xffff5ed8
    [03db7e87/X] sessmgr_gprs_callline_state_connected() sp=0xffff5f08
    [03dba5ee/X] sessmgr_gprs_callline_fsm() sp=0xffff5f38
    [06223913/X] sessmgr_gprs_handle_pdp_activation_request() sp=0xffff6218
    [06207a3f/X] GeLiGmuSSigInd() sp=0xffff62c8
    [06208196/X] GxLiGmuSSigInd() sp=0xffff62f8
    [0baee3ac/X] GmUiGmuSSigInd() sp=0xffff6338
    [0bac098d/X] gmSmLiActPdpReqIdle() sp=0xffff6558
    [0bab8f5b/X] gmSmdProcMsg() sp=0xffff65f8
    [0badd3c1/X] gmDfnDistMsg() sp=0xffff67a8
    [0ba54289/X] GmLiGlsGmmUDatInd() sp=0xffff67f8
    [0ba4b30f/X] GlUiGlsGmmUDatInd() sp=0xffff6828
    [0ba3e46a/X] glRxFrame() sp=0xffff68f8
    [0ba1f19a/X] GlLiGbrBUDatInd() sp=0xffff6a08
    [0ba0f09d/X] GgUiGbrBUDatInd() sp=0xffff6a48

Conditions:
The current status is that the Engineer looked at this and from the initial analysis it looks like a UE with IMSI 405550009658290 coming in with PDP type as v4v6 and APN as ?webside internet.com?. This will be treated as No APN Requested from UE but we seem to be having an issue picking the right record and default APN. We have asked QA team to reproduce the scenario. As far as work around is concerned, there is no identified so far other than blocking this IMSI or asking him to correct his APN.