signalfd() notification should be ignored if nothing was read.
@@ -749,6 +749,7 @@ nxt_epoll_signalfd_handler(nxt_task_t *task, void *obj, void *data)
if (n != sizeof(struct signalfd_siginfo)) {
nxt_log(task, NXT_LOG_CRIT, "read signalfd(%d) failed %E",
ev->fd, nxt_errno);
+ return;
}
nxt_debug(task, "signalfd(%d) signo:%d", ev->fd, sfd.ssi_signo);
