pipe[0] event unix.EPOLLHUP loops forever

[xvnuna]

pipe[0] already read about event unix.EPOLLHUP，but stuck in an infinite loop here, why this occur and how should I handle this?
if event.Events&unix.EPOLLHUP != 0 {
// Write pipe descriptor was closed, by us. This means we're closing down the
// watcher, and we should wake up.
}

fsnotify version:1.4.9
Go version:Go 1.14
arm64 linux

[arp242]

Since #434 we no longer use epoll, so this is no longer relevant (and the problem should be fixed with that).