diff --git a/core/master_utils.c b/core/master_utils.c
index 3b940a36..ce4a290a 100644
--- a/core/master_utils.c
+++ b/core/master_utils.c
@@ -724,7 +724,7 @@ void uwsgi_manage_command_cron(time_t now) {
 			}
 		}
 		if (current_cron->month < 0) {
-			if ((uwsgi_cron_delta->tm_hour % abs(current_cron->month)) == 0) {
+			if ((uwsgi_cron_delta->tm_mon % abs(current_cron->month)) == 0) {
 				uc_month = uwsgi_cron_delta->tm_mon;
 			}
 		}
@@ -1202,6 +1202,7 @@ struct uwsgi_stats *uwsgi_master_generate_stats() {
 #endif
 
 #ifdef UWSGI_SSL
+	struct uwsgi_legion *legion = NULL;
 	if (uwsgi.legions) {
 
 		if (uwsgi_stats_comma(us))
@@ -1213,7 +1214,7 @@ struct uwsgi_stats *uwsgi_master_generate_stats() {
 		if (uwsgi_stats_list_open(us))
 			goto end;
 
-		struct uwsgi_legion *legion = uwsgi.legions;
+		legion = uwsgi.legions;
 		while (legion) {
 			if (uwsgi_stats_object_open(us))
 				goto end;
@@ -1283,30 +1284,30 @@ struct uwsgi_stats *uwsgi_master_generate_stats() {
 			struct uwsgi_legion_node *node = legion->nodes_head;
 			while (node) {
 				if (uwsgi_stats_object_open(us))
-					goto end;
+					goto unlock_legion_mutex;
 
 				if (uwsgi_stats_keyvaln_comma(us, "name", node->name, node->name_len))
-					goto end;
+					goto unlock_legion_mutex;
 
 				if (uwsgi_stats_keyval_comma(us, "uuid", node->uuid))
-					goto end;
+					goto unlock_legion_mutex;
 
 				if (uwsgi_stats_keylong_comma(us, "valor", (unsigned long long) node->valor))
-					goto end;
+					goto unlock_legion_mutex;
 
 				if (uwsgi_stats_keylong_comma(us, "checksum", (unsigned long long) node->checksum))
-					goto end;
+					goto unlock_legion_mutex;
 
 				if (uwsgi_stats_keylong(us, "last_seen", (unsigned long long) node->last_seen))
-					goto end;
+					goto unlock_legion_mutex;
 
 				if (uwsgi_stats_object_close(us))
-					goto end;
+					goto unlock_legion_mutex;
 
 				node = node->next;
 				if (node) {
 					if (uwsgi_stats_comma(us))
-						goto end;
+						goto unlock_legion_mutex;
 				}
 			}
 			pthread_mutex_unlock(&legion->lock);
@@ -1335,6 +1336,11 @@ struct uwsgi_stats *uwsgi_master_generate_stats() {
 		goto end;
 
 	return us;
+#ifdef UWSGI_SSL
+unlock_legion_mutex:
+	if (legion)
+		pthread_mutex_unlock(&legion->lock);
+#endif
 end:
 	free(us->base);
 	free(us);
diff --git a/core/utils.c b/core/utils.c
index 248efab5..b9c779b6 100644
--- a/core/utils.c
+++ b/core/utils.c
@@ -997,8 +997,10 @@ int wsgi_req_accept(int queue, struct wsgi_request *wsgi_req) {
 	if (timeout > 0) {
 		uwsgi_heartbeat();
 		// no need to continue if timed-out
-		if (ret == 0)
+		if (ret == 0) {
+			thunder_unlock;
 			return -1;
+		}
 	}
 
 #ifdef UWSGI_THREADING
diff --git a/lib/linux_ns.c b/lib/linux_ns.c
index 149aca88..2aa8cb82 100644
--- a/lib/linux_ns.c
+++ b/lib/linux_ns.c
@@ -201,10 +201,16 @@ void linux_namespace_jail() {
 
 		unmounted = 0;
 		procmounts = fopen("/proc/self/mounts", "r");
+		if (!procmounts)
+			break;
 		while (fgets(line, 1024, procmounts) != NULL) {
 			delim0 = strchr(line, ' ');
+			if (!delim0)
+				continue;
 			delim0++;
 			delim1 = strchr(delim0, ' ');
+			if (!delim1)
+				continue;
 			*delim1 = 0;
 			// and now check for keep-mounts
 			if (uwsgi_is_a_keep_mount(delim0)) continue;
diff --git a/plugins/carbon/carbon.c b/plugins/carbon/carbon.c
index b6bf02be..b5573880 100644
--- a/plugins/carbon/carbon.c
+++ b/plugins/carbon/carbon.c
@@ -107,6 +107,7 @@ int carbon_write(int *fd, char *fmt,...) {
 	int rlen;
 
 	rlen = vsnprintf(ptr, 4096, fmt, ap);
+	va_end(ap);
 
 	if (rlen < 1) return 0;