From 212f00fce7153d867b91905745a0c06113321167 Mon Sep 17 00:00:00 2001
From: luis_pereira87 <lpereira@allbesmart.pt>
Date: Tue, 11 Jan 2022 19:03:35 +0000
Subject: [PATCH] Fix segmentation faults for SA

---
 openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c b/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
index ac5758729b8..e909be2a554 100644
--- a/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
+++ b/openair2/LAYER2/NR_MAC_UE/nr_ue_procedures.c
@@ -629,7 +629,7 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
   int default_abc = 1;
 
   uint16_t n_RB_DLBWP;
-  if (mac->DLbwp[dl_bwp_id-1]) n_RB_DLBWP = NRRIV2BW(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+  if (dl_bwp_id>0 && mac->DLbwp[dl_bwp_id-1]) n_RB_DLBWP = NRRIV2BW(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
   else if (mac->scc_SIB) n_RB_DLBWP =  NRRIV2BW(mac->scc_SIB->uplinkConfigCommon->initialUplinkBWP.genericParameters.locationAndBandwidth,MAX_BWP_SIZE);
   else n_RB_DLBWP = mac->type0_PDCCH_CSS_config.num_rbs;
 
@@ -799,7 +799,7 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
     dl_config->dl_config_list[dl_config->number_pdus].dlsch_config_pdu.rnti = rnti;
     fapi_nr_dl_config_dlsch_pdu_rel15_t *dlsch_config_pdu_1_0 = &dl_config->dl_config_list[dl_config->number_pdus].dlsch_config_pdu.dlsch_config_rel15;
 
-    NR_PDSCH_Config_t *pdsch_config= (mac->DLbwp[dl_bwp_id-1]) ? mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup : NULL;
+    NR_PDSCH_Config_t *pdsch_config= (dl_bwp_id>0 && mac->DLbwp[dl_bwp_id-1]) ? mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup : NULL;
     int is_common=0;
     if(rnti == SI_RNTI) {
       NR_Type0_PDCCH_CSS_config_t type0_PDCCH_CSS_config = mac->type0_PDCCH_CSS_config;
@@ -829,7 +829,7 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
           dlsch_config_pdu_1_0->BWPStart = NRRIV2PRBOFFSET(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
           pdsch_config = mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup;
         }
-      } else if (mac->DLbwp[dl_bwp_id-1]) {
+      } else if (dl_bwp_id>0 && mac->DLbwp[dl_bwp_id-1]) {
         dlsch_config_pdu_1_0->BWPSize = NRRIV2BW(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
         dlsch_config_pdu_1_0->BWPStart = NRRIV2PRBOFFSET(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
         dlsch_config_pdu_1_0->SubcarrierSpacing = mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.subcarrierSpacing;
@@ -851,12 +851,13 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
 
 
     NR_PDSCH_TimeDomainResourceAllocationList_t *pdsch_TimeDomainAllocationList = NULL;
-    if (mac->DLbwp[dl_bwp_id-1] &&
+    if (dl_bwp_id>0 &&
+        mac->DLbwp[dl_bwp_id-1] &&
         mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated &&
         mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config &&
         mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList)
       pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->pdsch_TimeDomainAllocationList->choice.setup;
-    else if (mac->DLbwp[dl_bwp_id-1] && mac->DLbwp[dl_bwp_id-1]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList)
+    else if (dl_bwp_id>0 && mac->DLbwp[dl_bwp_id-1] && mac->DLbwp[dl_bwp_id-1]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList)
       pdsch_TimeDomainAllocationList = mac->DLbwp[dl_bwp_id-1]->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
     else if (mac->scc_SIB && mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.pdsch_ConfigCommon->choice.setup)
       pdsch_TimeDomainAllocationList = mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList;
@@ -874,7 +875,7 @@ int8_t nr_ue_process_dci(module_id_t module_id, int cc_id, uint8_t gNB_index, fr
                                                          dlsch_config_pdu_1_0->number_symbols,
                                                          dlsch_config_pdu_1_0->start_symbol,
                                                          mappingtype);
-    dlsch_config_pdu_1_0->dmrsConfigType = (mac->DLbwp[dl_bwp_id-1] != NULL) ?
+    dlsch_config_pdu_1_0->dmrsConfigType = (dl_bwp_id>0 && mac->DLbwp[dl_bwp_id-1] != NULL) ?
                                            (mac->DLbwp[dl_bwp_id-1]->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_Type == NULL ? 0 : 1) : 0;
     /* number of DM-RS CDM groups without data according to subclause 5.1.6.2 of 3GPP TS 38.214 version 15.9.0 Release 15 */
     if (dlsch_config_pdu_1_0->number_symbols == 2)
@@ -2659,7 +2660,7 @@ uint8_t nr_extract_dci_info(NR_UE_MAC_INST_t *mac,
 #endif
 
       // check BWP id
-      if (mac->DLbwp[dl_bwp_id-1]) N_RB=NRRIV2BW(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+      if (dl_bwp_id>0 && mac->DLbwp[dl_bwp_id-1]) N_RB=NRRIV2BW(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
       else         N_RB=NRRIV2BW(mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP.genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
 
       // Freq domain assignment (275rb >> fsize = 16)
@@ -2842,7 +2843,7 @@ uint8_t nr_extract_dci_info(NR_UE_MAC_INST_t *mac,
     case NR_RNTI_TC:
 
       // check BWP id
-      if (mac->DLbwp[dl_bwp_id-1]) N_RB=NRRIV2BW(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
+      if (dl_bwp_id>0 && mac->DLbwp[dl_bwp_id-1]) N_RB=NRRIV2BW(mac->DLbwp[dl_bwp_id-1]->bwp_Common->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
       else         N_RB=mac->type0_PDCCH_CSS_config.num_rbs;
 
 
-- 
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