fix coverity issues

lib/examples/pdsch_enodeb.c

@@ -185,7 +185,8 @@ void parse_args(int argc, char **argv) {
       cell.id = atoi(argv[optind]);
       break;
     case 'x':
-      strncpy(mimo_type_str, argv[optind], 32);
+      strncpy(mimo_type_str, argv[optind], 31);
+      mimo_type_str[31] = 0;
       break;
     case 'b':
       multiplex_pmi = (uint32_t) atoi(argv[optind]);

lib/src/asn1/liblte_s1ap.cc

@@ -2243,9 +2243,9 @@ LIBLTE_ERROR_ENUM liblte_s1ap_pack_imsi(
   if(ie  != NULL &&
      ptr != NULL)
   {
-    // max length of IE buffer is 32, so limit
-    if (ie->n_octets > 31) {
-      printf("Length in struct exceeds buffer (%d > 31).\n", ie->n_octets);
+    // max length of IE buffer is 8, so limit
+    if (ie->n_octets > 7) {
+      printf("Length in struct exceeds buffer (%d > 7).\n", ie->n_octets);
       return LIBLTE_ERROR_ENCODE_FAIL;
     }
 

srsue/src/phy/phch_worker.cc

@@ -232,8 +232,8 @@ void phch_worker::work_imp()
 
   /** Calculate RSSI on the input signal before generating the output */
 
-  // Average RSSI over all symbols
-  float rssi_dbm = 10*log10(srslte_vec_avg_power_cf(signal_buffer[0], SRSLTE_SF_LEN_PRB(cell.nof_prb))) + 30;
+  // Average RSSI over all symbols (make sure SF length is non-zero)
+  float rssi_dbm = SRSLTE_SF_LEN_PRB(cell.nof_prb) > 0 ? (10*log10(srslte_vec_avg_power_cf(signal_buffer[0], SRSLTE_SF_LEN_PRB(cell.nof_prb))) + 30) : 0;
   if (isnormal(rssi_dbm)) {
     phy->avg_rssi_dbm = SRSLTE_VEC_EMA(rssi_dbm, phy->avg_rssi_dbm, phy->args->snr_ema_coeff);
   }