From a6979515f80f06aae12dc52f2f97f701565bf53c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Th=C3=A9o=20Putegnat?= <theo.putegnat@datadoghq.com>
Date: Fri, 4 Sep 2026 16:26:36 +0200
Subject: [PATCH] fix panic when call cleanupMap twice

---
 perfmap.go    | 4 ++++
 ringbuffer.go | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/perfmap.go b/perfmap.go
index 14334bf..1d560b1 100644
--- a/perfmap.go
+++ b/perfmap.go
@@ -252,6 +252,10 @@ func (m *PerfMap) closeReader() error {
 func (m *PerfMap) cleanupMap(cleanup MapCleanupType) error {
 	m.stateLock.Lock()
 	defer m.stateLock.Unlock()
+	// check if map was already closed
+	if m.state == reset {
+		return nil
+	}
 	return m.close(cleanup)
 }
 
diff --git a/ringbuffer.go b/ringbuffer.go
index 39abdf9..c755f6f 100644
--- a/ringbuffer.go
+++ b/ringbuffer.go
@@ -201,6 +201,10 @@ func (rb *RingBuffer) closeReader() error {
 func (rb *RingBuffer) cleanupMap(cleanup MapCleanupType) error {
 	rb.stateLock.Lock()
 	defer rb.stateLock.Unlock()
+	// check if map was already closed
+	if rb.state == reset {
+		return nil
+	}
 	return rb.close(cleanup)
 }