Index: cloud-init-0.7.8/cloudinit/util.py
===================================================================
--- cloud-init-0.7.8.orig/cloudinit/util.py
+++ cloud-init-0.7.8/cloudinit/util.py
@@ -283,9 +283,6 @@ class ProcessExecutionError(IOError):
             'reason': self.reason,
         }
         IOError.__init__(self, message)
-        # For backward compatibility with Python 2.
-        if not hasattr(self, 'message'):
-            self.message = message
 
 
 class SeLinuxGuard(object):
@@ -1816,7 +1813,7 @@ def subp(args, data=None, rcs=None, env=
             def ldecode(data, m='utf-8'):
                 if not isinstance(data, bytes):
                     return data
-                return data.decode(m, errors=decode)
+                return data.decode(m, decode)
 
             out = ldecode(out)
             err = ldecode(err)