From: Azat Khuzhin <azat@libevent.org>
Date: Wed, 8 Apr 2020 23:16:15 +0000 (+0300)
Subject: Avoid triggering wrong events with EV_ET set
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=9543f31a1a6cc2f919f57bfc2fd55068262a3f27;p=libevent

Avoid triggering wrong events with EV_ET set

For the event at least something except EV_ET should be set, so checking
ev->ev_events with "triggered" events is wrong, because EV_ET is always
passed (see epoll), since it will be filtered out if it is not set in
event.
---

diff --git a/evmap.c b/evmap.c
index ffc991f5..e4e35c68 100644
--- a/evmap.c
+++ b/evmap.c
@@ -432,7 +432,7 @@ evmap_io_active_(struct event_base *base, evutil_socket_t fd, short events)
 	if (NULL == ctx)
 		return;
 	LIST_FOREACH(ev, &ctx->events, ev_io_next) {
-		if (ev->ev_events & events)
+		if (ev->ev_events & (events & ~EV_ET))
 			event_active_nolock_(ev, ev->ev_events & events, 1);
 	}
 }