Linux - prevent enumerating memory mappings of smeared processes

Author: atcuno

volatility/plugins/overlays/linux/linux.py

@@ -1915,7 +1915,7 @@ def threads(self):
         return threads
 
     def get_proc_maps(self):
-        if not self.mm:
+        if not self.mm or self.get_process_address_space() == None:
             return
         seen = {}
         for vma in linux_common.walk_internal_list("vm_area_struct", "vm_next", self.mm.mmap):