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FSWatcher.Run() spawned a goroutine with no exit mechanism, causing a goroutine leak. Add a ctx context.Context parameter to Run() so the goroutine can exit cleanly when the context is canceled, and defer-close the underlying fsnotify watcher on exit. For kube-proxy, the existing ctx from runLoop() is passed directly. For the flexvolume prober, ctx is stored in flexVolumeProber at construction time via GetDynamicPluginProber(), representing the component lifetime (kubelet/controller-manager), which is the appropriate scope for this long-running watcher.