fix segfault issue cause by num_pdcch_symbols=0 in nFAPI mode

openair1/SCHED/phy_procedures_lte_eNb.c

@@ -467,6 +467,11 @@ void phy_procedures_eNB_TX(PHY_VARS_eNB *eNB,
   VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME(VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO,num_pdcch_symbols);
   VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME (VCD_SIGNAL_DUMPER_VARIABLES_DCI_INFO, (frame * 10) + subframe);
 
+  if (num_pdcch_symbols == 0){
+    LOG_E(PHY,"[eNB %"PRIu8"] Frame %d, subframe %d: Calling generate_dci_top (pdcch) (num_dci %"PRIu8") num_pdcch_symbols:%d\n",eNB->Mod_id,frame, subframe, num_dci, num_pdcch_symbols);
+    return;
+  }
+
   if (num_dci > 0)
     LOG_D(PHY,"[eNB %"PRIu8"] Frame %d, subframe %d: Calling generate_dci_top (pdcch) (num_dci %"PRIu8") num_pdcch_symbols:%d\n",eNB->Mod_id,frame, subframe, num_dci, num_pdcch_symbols);
 

openair2/LAYER2/MAC/eNB_scheduler_bch.c

@@ -702,6 +702,7 @@ schedule_SI(module_id_t module_idP, frame_t frameP, sub_frame_t subframeP)
 		    LOG_D(MAC, "Frame %d: Subframe %d : Adding common DCI for S_RNTI\n", frameP, subframeP);
 		    dl_req->number_dci++;
 		    dl_req->number_pdu++;
+                    dl_req->tl.tag   = NFAPI_DL_CONFIG_REQUEST_BODY_TAG;
 		    dl_config_pdu = &dl_req->dl_config_pdu_list[dl_req->number_pdu];
 		    memset((void *) dl_config_pdu, 0,
 			   sizeof(nfapi_dl_config_request_pdu_t));