From 604c391b74d6f448bf17ae9b368abffe7e5bc319 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Greg=C3=B3rio=20G=2E?= <geyslan@gmail.com>
Date: Wed, 25 Sep 2024 09:22:05 -0300
Subject: [PATCH] fix(proctree): possible sync.Once data race (#4307)

---
 pkg/proctree/proctree.go        | 1 +
 pkg/proctree/proctree_procfs.go | 3 ---
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/pkg/proctree/proctree.go b/pkg/proctree/proctree.go
index ef0104848d75..aac3a2ba4a48 100644
--- a/pkg/proctree/proctree.go
+++ b/pkg/proctree/proctree.go
@@ -143,6 +143,7 @@ func NewProcessTree(ctx context.Context, config ProcTreeConfig) (*ProcessTree, e
 	procTree := &ProcessTree{
 		processes:   processes,
 		threads:     threads,
+		procfsOnce:  new(sync.Once),
 		ctx:         ctx,
 		procfsQuery: config.ProcfsQuerying,
 	}
diff --git a/pkg/proctree/proctree_procfs.go b/pkg/proctree/proctree_procfs.go
index 8d25885b0379..bf77ab73609c 100644
--- a/pkg/proctree/proctree_procfs.go
+++ b/pkg/proctree/proctree_procfs.go
@@ -46,9 +46,6 @@ func (pt *ProcessTree) FeedFromProcFSAsync(givenPid int) {
 		pt.procfsChan = make(chan int, 1000)
 		pt.feedFromProcFSLoop()
 	}
-	if pt.procfsOnce == nil {
-		pt.procfsOnce = new(sync.Once)
-	}
 
 	// feed the loop without blocking (if the loop is busy, given pid won't be processed)
 	select {