diff --git a/core/hooks.c b/core/hooks.c
index a9112a9d..0e6c5365 100644
--- a/core/hooks.c
+++ b/core/hooks.c
@@ -738,7 +738,8 @@ void uwsgi_hooks_setns_run(struct uwsgi_string_list *l, pid_t pid, uid_t uid, gi
 					uwsgi_error("uwsgi_hooks_setns_run()/setns()");
 					exit(1);
 				}
-
+				close(fd);
+				free(procfile);
                 	}
 
 			if (setenv("UWSGI_VASSAL_PID", pidstr, 1)) {
diff --git a/core/subscription.c b/core/subscription.c
index a3765ef0..6bd03f28 100644
--- a/core/subscription.c
+++ b/core/subscription.c
@@ -931,6 +931,7 @@ void uwsgi_subscribe2(char *arg, uint8_t cmd) {
 	char *s2_proto = NULL;
 	char *s2_algo = NULL;
 	char *s2_backup = NULL;
+	struct uwsgi_buffer *ub = NULL;
 
 	if (uwsgi_kvlist_parse(arg, strlen(arg), ',', '=',
 		"server", &s2_server,
@@ -998,7 +999,7 @@ void uwsgi_subscribe2(char *arg, uint8_t cmd) {
 		s2_addr = uwsgi_str(uwsgi.sockets->name);
 	}
 
-        struct uwsgi_buffer *ub = uwsgi_buffer_new(uwsgi.page_size);
+        ub = uwsgi_buffer_new(uwsgi.page_size);
         if (!ub) goto end;
 	// leave space for the header
 	ub->pos = 4;
@@ -1058,9 +1059,10 @@ void uwsgi_subscribe2(char *arg, uint8_t cmd) {
 
         send_subscription(-1, s2_server, ub->buf, ub->pos);
 
-        uwsgi_buffer_destroy(ub);
-
 end:
+	if (ub)
+		uwsgi_buffer_destroy(ub);
+
 	if (s2_server)
 		free(s2_server);
 	if (s2_key)
diff --git a/plugins/router_memcached/router_memcached.c b/plugins/router_memcached/router_memcached.c
index 9b0d2142..b4bbb97d 100644
--- a/plugins/router_memcached/router_memcached.c
+++ b/plugins/router_memcached/router_memcached.c
@@ -312,6 +312,7 @@ static int uwsgi_router_memcached(struct uwsgi_route *ur, char *args) {
 
 	if (!urmc->key || !urmc->addr) {
 		uwsgi_log("invalid route syntax: you need to specify a memcached address and key pattern\n");
+		free(urmc);
 		return -1;
 	}
 
@@ -346,6 +347,7 @@ static int uwsgi_router_memcached_store(struct uwsgi_route *ur, char *args) {
 
 		if (!urmc->key || !urmc->addr) {
                         uwsgi_log("invalid memcachedstore route syntax: you need to specify an address and a key\n");
+			free(urmc);
 			return -1;
                 }
 
diff --git a/plugins/router_redis/router_redis.c b/plugins/router_redis/router_redis.c
index 52890893..fdf009d6 100644
--- a/plugins/router_redis/router_redis.c
+++ b/plugins/router_redis/router_redis.c
@@ -310,6 +310,7 @@ static int uwsgi_router_redis(struct uwsgi_route *ur, char *args) {
 
 	if (!urrc->key || !urrc->addr) {
 		uwsgi_log("invalid route syntax: you need to specify a redis address and key pattern\n");
+		free(urrc);
 		return -1;
 	}
 
@@ -344,6 +345,7 @@ static int uwsgi_router_redis_store(struct uwsgi_route *ur, char *args) {
 
 		if (!urrc->key || !urrc->addr) {
                         uwsgi_log("invalid redisstore route syntax: you need to specify an address and a key\n");
+			free(urrc);
 			return -1;
                 }
 
diff --git a/plugins/router_static/router_static.c b/plugins/router_static/router_static.c
index 232b37e9..14c5d8e2 100644
--- a/plugins/router_static/router_static.c
+++ b/plugins/router_static/router_static.c
@@ -67,7 +67,10 @@ int uwsgi_routing_func_file(struct wsgi_request *wsgi_req, struct uwsgi_route *u
 	// static file - don't update avg_rt after request
 	wsgi_req->do_not_account_avg_rt = 1;
 
-	if (urfc->no_headers) goto send;
+	if (urfc->no_headers) {
+		uwsgi_buffer_destroy(ub_s);
+		goto send;
+	}
 
 	if (uwsgi_response_prepare_headers(wsgi_req, ub_s->buf, ub_s->pos)) {
 		uwsgi_buffer_destroy(ub_s);
@@ -138,7 +141,10 @@ int uwsgi_routing_func_sendfile(struct wsgi_request *wsgi_req, struct uwsgi_rout
         // static file - don't update avg_rt after request
         wsgi_req->do_not_account_avg_rt = 1;
 
-	if (urfc->no_headers) goto send;
+	if (urfc->no_headers) {
+                uwsgi_buffer_destroy(ub_s);
+		goto send;
+	}
 
         if (uwsgi_response_prepare_headers(wsgi_req, ub_s->buf, ub_s->pos)) {
                 uwsgi_buffer_destroy(ub_s);
@@ -208,7 +214,10 @@ int uwsgi_routing_func_fastfile(struct wsgi_request *wsgi_req, struct uwsgi_rout
         // static file - don't update avg_rt after request
         wsgi_req->do_not_account_avg_rt = 1;
 
-	if (urfc->no_headers) goto send;
+	if (urfc->no_headers) {
+                uwsgi_buffer_destroy(ub_s);
+		goto send;
+	}
 
         if (uwsgi_response_prepare_headers(wsgi_req, ub_s->buf, ub_s->pos)) {
                 uwsgi_buffer_destroy(ub_s);
@@ -288,6 +297,7 @@ static int uwsgi_router_file(struct uwsgi_route *ur, char *args) {
 
 	if (!urfc->filename) {
 		uwsgi_log("you have to specifify a filename for the \"file\" router\n");
+		free(urfc);
 		return -1;
 	}
 
diff --git a/plugins/rpc/rpc_plugin.c b/plugins/rpc/rpc_plugin.c
index b8a14a21..d3996678 100644
--- a/plugins/rpc/rpc_plugin.c
+++ b/plugins/rpc/rpc_plugin.c
@@ -455,7 +455,6 @@ static int uwsgi_routing_func_rpc_var(struct wsgi_request *wsgi_req, struct uwsg
         if (size == 0) goto end;
 
 	if (!uwsgi_req_append(wsgi_req, ur->data4, ur->data4_len, response, size)) {
-		free(response);
 		goto end;
 	}
 	ret = UWSGI_ROUTE_NEXT;