diff --git a/internal/ptree/ptree.go b/internal/ptree/ptree.go
index 1f53a20..494a104 100644
--- a/internal/ptree/ptree.go
+++ b/internal/ptree/ptree.go
@@ -24,6 +24,10 @@ var (
 func GetProcessRSSAnon(pid int) (uint64, error) {
 	status := fmt.Sprintf("%d/status", pid)
 	f, err := procfs.Open(status)
+	if os.IsNotExist(err) {
+		// process is already gone
+		return 0, nil
+	}
 	if err != nil {
 		return 0, err
 	}
diff --git a/pipe/memorylimit.go b/pipe/memorylimit.go
index f21ee15..358a6de 100644
--- a/pipe/memorylimit.go
+++ b/pipe/memorylimit.go
@@ -58,7 +58,7 @@ func killAtLimit(byteLimit uint64, eventHandler func(e *Event)) memoryWatchFunc
 				return
 			case <-t.C:
 				rss, err := stage.GetRSSAnon(ctx)
-				if err != nil {
+				if err != nil && !errors.Is(err, errProcessInfoMissing) {
 					consecutiveErrors++
 					if consecutiveErrors >= 2 {
 						eventHandler(&Event{