lib: Ensure read/write fd's are in range

Ensure that we can properly handle a passed in read/write
fd for using in poll.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

diff --git a/lib/thread.c b/lib/thread.c
index 1c5e8387729774dc9bf355b47055c6a736e97383..898e9e9fced5b42285f6826e8f6da47b8a69f5ff 100644 (file)
--- a/lib/thread.c
+++ b/lib/thread.c
@@ -782,6 +782,7 @@ struct thread *funcname_thread_add_read_write(int dir, struct thread_master *m,
 {
        struct thread *thread = NULL;
 
+       assert(fd >= 0 && fd < m->fd_limit);
        pthread_mutex_lock(&m->mtx);
        {
                if (t_ptr