limit FD to FD_SETSIZE

diff --git a/src/lib/event.c b/src/lib/event.c
index fa1e0aa..ba9e60c 100644 (file)
--- a/src/lib/event.c
+++ b/src/lib/event.c
@@ -402,6 +402,14 @@ int fr_event_fd_insert(fr_event_list_t *el, int type, int fd,
 
 #else  /* HAVE_KQUEUE */
 
+       /*
+        *      select() has limits.
+        */
+       if (fd > FD_SETSIZE) {
+               fprintf(stderr, "FD is larger than FD_SETSIZE");
+               return 0;
+       }
+
        for (i = 0; i <= el->max_readers; i++) {
                /*
                 *      Be fail-safe on multiple inserts.