commit fefb6a732e0c15c73300858c3fa7d7e89e79d18f
Author: Valentina Mukhamedzhanova <vmukhame@redhat.com>
Date:   Wed Mar 11 10:52:49 2015 +0100

    Make sure epoch is a string while checking for running kernel. BZ#1200159

diff --git a/yum/misc.py b/yum/misc.py
index 6850ae2..f72f028 100644
--- a/yum/misc.py
+++ b/yum/misc.py
@@ -818,6 +818,8 @@ def get_running_kernel_pkgtup(ts):
             e = h['epoch']
             if h['epoch'] is None:
                 e = '0'
+            else:
+                e = str(e)
             return (h['name'], h['arch'], e, h['version'], h['release'])
     
     return (None, None, None, None, None)