From 9438738693b7376fe8c7485ebc1c69d75a0a016c Mon Sep 17 00:00:00 2001
From: Konstantin Lebedev <9497591+kmlebedev@users.noreply.github.com>
Date: Mon, 18 Apr 2022 12:10:22 +0500
Subject: [PATCH] avoid invalid memory address or nil pointer dereference

---
 weed/storage/volume.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/weed/storage/volume.go b/weed/storage/volume.go
index 14bc5f22d..6d48fbc83 100644
--- a/weed/storage/volume.go
+++ b/weed/storage/volume.go
@@ -260,7 +260,7 @@ func (v *Volume) collectStatus() (maxFileKey types.NeedleId, datFileSize int64,
 	defer v.dataFileAccessLock.RUnlock()
 	glog.V(3).Infof("collectStatus volume %d", v.Id)
 
-	if v.nm == nil {
+	if v.nm == nil || v.DataBackend == nil {
 		return
 	}