Add checks more checks for UL grants

lib/src/phy/phch/ra_ul.c

@@ -307,6 +307,11 @@ int srslte_ra_ul_dci_to_grant(srslte_cell_t*              cell,
       grant->n_prb_tilde[i] = grant->n_prb[i];
     }
 
+    if (grant->nof_symb == 0 || grant->nof_re == 0) {
+      ERROR("Converting ul_dci to grant, nof_symb=%d, nof_re=%d\n", grant->nof_symb, grant->nof_re);
+      return SRSLTE_ERROR;
+    }
+
     return SRSLTE_SUCCESS;
   } else {
     return SRSLTE_ERROR;

lib/src/phy/phch/sch.c

@@ -928,6 +928,10 @@ static void ulsch_interleave(uint8_t*          g_bits,
                              uint32_t          nof_ri_bits,
                              uint8_t*          ri_present)
 {
+  if (N_pusch_symbs == 0 || Qm == 0 || H_prime_total == 0 || H_prime_total < N_pusch_symbs) {
+    ERROR("Invalid input: N_pusch_symbs=%d, Qm=%d, H_prime_total=%d, N_pusch_symbs=%d\n", N_pusch_symbs, Qm, H_prime_total, N_pusch_symbs);
+    return;
+  }
 
   const uint32_t nof_bits   = H_prime_total * Qm;
   uint32_t       rows       = H_prime_total / N_pusch_symbs;

srsue/src/phy/cc_worker.cc

@@ -654,8 +654,8 @@ bool cc_worker::work_ul(srslte_uci_data_t* uci_data)
     // Generate PHY grant
     if (srslte_ue_ul_dci_to_pusch_grant(&ue_ul, &sf_cfg_ul, &ue_ul_cfg, &dci_ul, &ue_ul_cfg.ul_cfg.pusch.grant)) {
       Error("Converting DCI message to UL dci\n");
-    }
-
+      ul_grant_available = false;
+    } else {
       // Save TBS info for next retx
       phy->last_ul_tb[pid][cc_idx] = ue_ul_cfg.ul_cfg.pusch.grant.tb;
 
@@ -668,6 +668,7 @@ bool cc_worker::work_ul(srslte_uci_data_t* uci_data)
       ue_ul_cfg.ul_cfg.hopping.current_tx_nb = ul_action.current_tx_nb;
       srslte_ue_ul_pusch_hopping(&ue_ul, &sf_cfg_ul, &ue_ul_cfg, &ue_ul_cfg.ul_cfg.pusch.grant);
     }
+  }
 
   // Set UL RNTI
   if (ul_grant_available || ul_mac_grant.phich_available) {