Work around some Tcp session free issues in the app layer parsers.

src/app-layer-detect-proto.c

@@ -369,7 +369,12 @@ void *AppLayerDetectProtoThread(void *td)
             mutex_lock(&smsg->flow->m);
             if (store == 1) {
                 /* store */
+                if (ssn != NULL && ssn->l7data != NULL) {
                     ssn->l7data[al_proto_id] = (void *)al_proto;
+                } else {
+                    al_proto->proto = 0;
+                    PoolReturn(al_detect_proto_pool,(void *)al_proto);
+                }
                 store = 0;
             }
             /* XXX we need to improve this logic */

src/app-layer-parser.c

@@ -456,6 +456,7 @@ int AppLayerParse(Flow *f, uint8_t proto, uint8_t flags, uint8_t *input, uint32_
             return -1;
 
         mutex_lock(&f->m);
+        if (ssn->l7data != NULL) /** \todo remove once we fixed ssn timeouts */
             ssn->l7data[app_layer_sid] = (void *)parser_state_store;
         mutex_unlock(&f->m);
     }
@@ -492,13 +493,18 @@ int AppLayerParse(Flow *f, uint8_t proto, uint8_t flags, uint8_t *input, uint32_
         parser_state->flags |= APP_LAYER_PARSER_EOF;
 
     /* See if we already have a 'app layer' state */
-    void *app_layer_state = ssn->l7data[p->storage_id];
+    void *app_layer_state = NULL;
+    mutex_lock(&f->m);
+    if (ssn->l7data != NULL) /** \todo remove once we fixed ssn timeouts */
+        app_layer_state = ssn->l7data[p->storage_id];
+    mutex_unlock(&f->m);
     if (app_layer_state == NULL) {
         app_layer_state = p->StateAlloc();
         if (app_layer_state == NULL)
             return -1;
 
         mutex_lock(&f->m);
+        if (ssn->l7data != NULL) /** \todo remove once we fixed ssn timeouts */
             ssn->l7data[p->storage_id] = app_layer_state;
         mutex_unlock(&f->m);
     }