Fix: segmentation fault happens when clean_eNb_dlsch() function is executed...

Fix: segmentation fault happens when clean_eNb_dlsch() function is executed while pdsch procedure running.

openair1/PHY/LTE_TRANSPORT/dlsch_modulation.c

@@ -2063,6 +2063,10 @@ int dlsch_modulation(PHY_VARS_eNB* phy_vars_eNB,
   if ((dlsch0 != NULL) && (dlsch1 != NULL)){
 
     harq_pid = dlsch0->harq_ids[subframe_offset];
+    if(harq_pid >= dlsch0->Mdlharq) {
+      LOG_E(PHY,"illegal harq_pid %d\n", harq_pid);
+      return(-1);
+    }
     dlsch0_harq = dlsch0->harq_processes[harq_pid];
     mimo_mode = dlsch0_harq->mimo_mode;
     mod_order0 = dlsch0_harq->Qm;
@@ -2080,6 +2084,10 @@ int dlsch_modulation(PHY_VARS_eNB* phy_vars_eNB,
   }else if ((dlsch0 != NULL) && (dlsch1 == NULL)){
 
     harq_pid = dlsch0->harq_ids[subframe_offset];
+    if(harq_pid >= dlsch0->Mdlharq) {
+      LOG_E(PHY,"illegal harq_pid %d\n", harq_pid);
+      return(-1);
+    }
     dlsch0_harq = dlsch0->harq_processes[harq_pid];
     mimo_mode = dlsch0_harq->mimo_mode;
     mod_order0 = dlsch0_harq->Qm;
@@ -2097,6 +2105,10 @@ int dlsch_modulation(PHY_VARS_eNB* phy_vars_eNB,
   }else if ((dlsch0 == NULL) && (dlsch1 != NULL)){
 
     harq_pid = dlsch1->harq_ids[subframe_offset];
+    if(harq_pid >= dlsch1->Mdlharq) {
+      LOG_E(PHY,"illegal harq_pid %d\n", harq_pid);
+      return(-1);
+    }
     dlsch1_harq = dlsch1->harq_processes[harq_pid];
     mimo_mode = dlsch1_harq->mimo_mode;
     mod_order0 = dlsch1_harq->Qm;