Description of problem:

When querying for bugs patched during the last week using the
python-bugzilla module I ran into the following error:

Fault -32000: 'DBD::Pg::db selectall_arrayref failed: ERROR:
index "bugs_activity_bug_id_idx" contains unexpected zero page at
block 47180\nHINT:  Please REINDEX it.

Version-Release number of selected component (if applicable):
4.4.9039-7

Steps to Reproduce:
[ DEBUG ] Search query:
[ DEBUG ] {u'field0-0-0': u'keywords',
 u'field0-1-0': u'keywords',
 u'field0-2-0': u'keywords',
 u'field0-3-0': u'keywords',
 u'query_format': u'advanced',
 u'type0-0-0': u'changedby',
 u'type0-1-0': u'changedto',
 u'type0-2-0': u'changedafter',
 u'type0-3-0': u'changedbefore',
 u'value0-0-0': u'psplicha',
 u'value0-1-0': u'Patch',
 u'value0-2-0': '2015-09-21',
 u'value0-3-0': '2015-09-28'}