diff --git a/weed/mount/filehandle_read.go b/weed/mount/filehandle_read.go
index 095dffc94..1b8af104a 100644
--- a/weed/mount/filehandle_read.go
+++ b/weed/mount/filehandle_read.go
@@ -23,6 +23,8 @@ func (fh *FileHandle) readFromDirtyPages(buff []byte, startOffset int64, tsNs in
 }
 
 func (fh *FileHandle) readFromChunks(buff []byte, offset int64) (int64, int64, error) {
+	fh.entryLock.Lock()
+	defer fh.entryLock.Unlock()
 
 	fileFullPath := fh.FullPath()