fix segfault in SA rfsim

openair2/LAYER2/NR_MAC_UE/config_ue.c

@@ -496,14 +496,18 @@ void config_bwp_ue(NR_UE_MAC_INST_t *mac, uint16_t *bwp_ind, uint8_t *dci_format
 
   NR_ServingCellConfig_t *scd = mac->cg->spCellConfig->spCellConfigDedicated;
 
-  if (bwp_ind && dci_format){
+  int n_ubwp = 0;
+  if (scd && scd->uplinkConfig &&
+      scd->uplinkConfig->uplinkBWP_ToAddModList)
+    n_ubwp = scd->uplinkConfig->uplinkBWP_ToAddModList->list.count;
 
+  if (bwp_ind && dci_format){
     switch(*dci_format){
     case NR_UL_DCI_FORMAT_0_1:
-      mac->UL_BWP_Id = *bwp_ind +1 ;
+      mac->UL_BWP_Id = n_ubwp < 4 ? *bwp_ind : *bwp_ind + 1;;
       break;
     case NR_DL_DCI_FORMAT_1_1:
-      mac->DL_BWP_Id = *bwp_ind +1;
+      mac->DL_BWP_Id = n_ubwp < 4 ? *bwp_ind : *bwp_ind + 1;;
       break;
     default:
       LOG_E(MAC, "In %s: failed to configure BWP Id from DCI with format %d \n", __FUNCTION__, *dci_format);