From 027c5d7f6e2ada90588f20436f4d0a8eb21076a8 Mon Sep 17 00:00:00 2001
From: "Roger A. Light" <roger@atchoo.org>
Date: Sat, 13 Jan 2018 21:10:24 +0000
Subject: [PATCH] Don't remove invalid socket from epoll fd.

---
 src/loop.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/loop.c b/src/loop.c
index 8fa5fa5d..500c57bb 100644
--- a/src/loop.c
+++ b/src/loop.c
@@ -613,7 +613,7 @@ void do_disconnect(struct mosquitto_db *db, struct mosquitto *context)
 			}
 		}
 #ifdef WITH_EPOLL
-		if (epoll_ctl(db->epollfd, EPOLL_CTL_DEL, context->sock, &ev) == -1) {
+		if (context->sock != INVALID_SOCKET && epoll_ctl(db->epollfd, EPOLL_CTL_DEL, context->sock, &ev) == -1) {
 			log__printf(NULL, MOSQ_LOG_DEBUG, "Error in epoll disconnecting: %s", strerror(errno));
 		}
 #endif