From a3d337491fd140ffa53150562f8cb5fa4135fd79 Mon Sep 17 00:00:00 2001
From: Shiming Zhang <wzshiming@foxmail.com>
Date: Wed, 17 Mar 2021 15:04:58 +0800
Subject: [PATCH] Fix watchForLockfileContention memory leak

---
 cmd/kubelet/app/server_linux.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cmd/kubelet/app/server_linux.go b/cmd/kubelet/app/server_linux.go
index c22e24d5312..3eef6f13d9e 100644
--- a/cmd/kubelet/app/server_linux.go
+++ b/cmd/kubelet/app/server_linux.go
@@ -29,6 +29,7 @@ func watchForLockfileContention(path string, done chan struct{}) error {
 	}
 	if err = watcher.AddWatch(path, inotify.InOpen|inotify.InDeleteSelf); err != nil {
 		klog.ErrorS(err, "Unable to watch lockfile")
+		watcher.Close()
 		return err
 	}
 	go func() {
@@ -39,6 +40,7 @@ func watchForLockfileContention(path string, done chan struct{}) error {
 			klog.ErrorS(err, "inotify watcher error")
 		}
 		close(done)
+		watcher.Close()
 	}()
 	return nil
 }