upstream: avoid dns timeout null event injection (#4956)

Signed-off-by: Matthew Fala <[email protected]>
fluent · Mar 5, 2022 · cc1280b · cc1280b
1 parent 6ab7380
commit cc1280b
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/src/flb_upstream.c b/src/flb_upstream.c
@@ -842,10 +842,11 @@ int flb_upstream_conn_timeouts(struct mk_list *list)
             }
 
             if (drop == FLB_TRUE) {
-                mk_event_inject(u_conn->evl, &u_conn->event,
-                                MK_EVENT_READ | MK_EVENT_WRITE,
-                                FLB_TRUE);
-
+                if (u_conn->event.status != MK_EVENT_NONE) {
+                    mk_event_inject(u_conn->evl, &u_conn->event,
+                                    MK_EVENT_READ | MK_EVENT_WRITE,
+                                    FLB_TRUE);
+                }
                 u_conn->net_error = ETIMEDOUT;
                 prepare_destroy_conn(u_conn);
             }