File 0008-fix-ticker-leak.patch of Package kubevirt.30572

From f18f0988669908b4bdc5c4152fc7f5863d5ef3cd Mon Sep 17 00:00:00 2001
From: rokkiter <101091030+rokkiter@users.noreply.github.com>
Date: Mon, 31 Jul 2023 16:51:08 +0800
Subject: [PATCH 1/2] fix ticker leak

Signed-off-by: rokkiter <101091030+rokkiter@users.noreply.github.com>
---
 cmd/virt-launcher/virt-launcher.go | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/cmd/virt-launcher/virt-launcher.go b/cmd/virt-launcher/virt-launcher.go
index e8d7c553f..c682c1bc6 100644
--- a/cmd/virt-launcher/virt-launcher.go
+++ b/cmd/virt-launcher/virt-launcher.go
@@ -237,14 +237,18 @@ func detectDomainWithUUID(domainManager virtwrap.DomainManager) *api.Domain {
 
 func waitForDomainUUID(timeout time.Duration, events chan watch.Event, stop chan struct{}, domainManager virtwrap.DomainManager) *api.Domain {
 
-	ticker := time.NewTicker(timeout).C
-	checkEarlyExit := time.NewTicker(time.Second * 2).C
-	domainCheckTicker := time.NewTicker(time.Second * 10).C
+	ticker := time.NewTicker(timeout)
+	defer ticker.Stop()
+	checkEarlyExit := time.NewTicker(time.Second * 2)
+	defer checkEarlyExit.Stop()
+	domainCheckTicker := time.NewTicker(time.Second * 10)
+	defer domainCheckTicker.Stop()
+
 	for {
 		select {
-		case <-ticker:
+		case <-ticker.C:
 			panic(fmt.Errorf("timed out waiting for domain to be defined"))
-		case <-domainCheckTicker:
+		case <-domainCheckTicker.C:
 			log.Log.V(3).Infof("Periodically checking for domain with UUID")
 			domain := detectDomainWithUUID(domainManager)
 			if domain != nil {
@@ -258,7 +262,7 @@ func waitForDomainUUID(timeout time.Duration, events chan watch.Event, stop chan
 			}
 		case <-stop:
 			return nil
-		case <-checkEarlyExit:
+		case <-checkEarlyExit.C:
 			if cmdserver.ReceivedEarlyExitSignal() {
 				panic(fmt.Errorf("received early exit signal"))
 			}
-- 
2.41.0


From e8941fad18234293e10fd3b968491bc4d22a6c09 Mon Sep 17 00:00:00 2001
From: rokkiter <101091030+rokkiter@users.noreply.github.com>
Date: Wed, 2 Aug 2023 10:18:39 +0800
Subject: [PATCH 2/2] fix ticker leak

Signed-off-by: rokkiter <101091030+rokkiter@users.noreply.github.com>
---
 pkg/monitoring/domainstats/downwardmetrics/scraper.go   | 1 +
 pkg/virt-handler/retry_manager.go                       | 1 +
 pkg/virt-launcher/monitor.go                            | 3 +--
 pkg/virt-launcher/virtwrap/agent-poller/agent_poller.go | 2 +-
 4 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/pkg/monitoring/domainstats/downwardmetrics/scraper.go b/pkg/monitoring/domainstats/downwardmetrics/scraper.go
index 8ca6ae4c3..1ca2465cf 100644
--- a/pkg/monitoring/domainstats/downwardmetrics/scraper.go
+++ b/pkg/monitoring/domainstats/downwardmetrics/scraper.go
@@ -149,6 +149,7 @@ func RunDownwardMetricsCollector(context context.Context, nodeName string, vmiIn
 
 	go func() {
 		ticker := time.NewTicker(DownwardmetricsRefreshDuration)
+		defer ticker.Stop()
 		for {
 			select {
 			case <-ticker.C:
diff --git a/pkg/virt-handler/retry_manager.go b/pkg/virt-handler/retry_manager.go
index dc14fb66d..ba549a157 100644
--- a/pkg/virt-handler/retry_manager.go
+++ b/pkg/virt-handler/retry_manager.go
@@ -145,6 +145,7 @@ func (f *FailRetryManager) ShouldDelay(key string, isFailure func() bool) (bool,
 // Run starts the manager.
 func (f *FailRetryManager) Run(stopCh chan struct{}) {
 	ticker := time.NewTicker(f.maxWait)
+	defer ticker.Stop()
 	for {
 		select {
 		case <-ticker.C:
diff --git a/pkg/virt-launcher/monitor.go b/pkg/virt-launcher/monitor.go
index 6620ac4df..d82c5c669 100644
--- a/pkg/virt-launcher/monitor.go
+++ b/pkg/virt-launcher/monitor.go
@@ -181,7 +181,7 @@ func (mon *monitor) monitorLoop(startTimeout time.Duration, signalStopChan chan
 	log.Log.Infof("Monitoring loop: rate %v start timeout %s", rate, timeoutRepr)
 
 	ticker := time.NewTicker(rate)
-
+	defer ticker.Stop()
 	mon.isDone = false
 	mon.timeout = startTimeout
 	mon.start = time.Now()
@@ -200,7 +200,6 @@ func (mon *monitor) monitorLoop(startTimeout time.Duration, signalStopChan chan
 		}
 	}
 
-	ticker.Stop()
 }
 
 func (mon *monitor) RunForever(startTimeout time.Duration, signalStopChan chan struct{}) {
diff --git a/pkg/virt-launcher/virtwrap/agent-poller/agent_poller.go b/pkg/virt-launcher/virtwrap/agent-poller/agent_poller.go
index 83265f3e5..ba681b204 100644
--- a/pkg/virt-launcher/virtwrap/agent-poller/agent_poller.go
+++ b/pkg/virt-launcher/virtwrap/agent-poller/agent_poller.go
@@ -243,10 +243,10 @@ func (p *PollerWorker) Poll(execAgentCommands agentCommandsExecutor, closeChan c
 	}
 
 	ticker := time.NewTicker(pollInterval)
+	defer ticker.Stop()
 	for {
 		select {
 		case <-closeChan:
-			ticker.Stop()
 			return
 		case <-ticker.C:
 			execAgentCommands(p.AgentCommands)
-- 
2.41.0