autotest: Test new kernel signature generation

client/site_tests/logging_UserCrash/logging_UserCrash.py

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import grp, logging, os, pwd, re, stat, subprocess
 from signal import SIGSEGV
 from autotest_lib.client.bin import site_crash_test, site_utils, test
 from autotest_lib.client.common_lib import error, utils
 
 _CORE_PATTERN = '/proc/sys/kernel/core_pattern'
@@ skipping 227 matching lines @@
             raise error.TestFail('Minidump not sent properly')
         if will_syslog_give_name:
             if result['exec_name'] != crasher_basename:
                 raise error.TestFail('Executable name incorrect')
         if result['report_kind'] != 'minidump':
             raise error.TestFail('Expected a minidump report')
         if result['report_payload'] != minidump_path:
             raise error.TestFail('Sent the wrong minidump payload')
         if result['meta_path'] != meta_path:
             raise error.TestFail('Used the wrong meta file')
+        if result['sig'] is not None:
+            raise error.TestFail('User crash should not have signature')
 
         # Check version matches.
         lsb_release = utils.read_file('/etc/lsb-release')
         version_match = re.search(r'CHROMEOS_RELEASE_VERSION=(.*)', lsb_release)
         if not ('Version: %s' % version_match.group(1)) in result['output']:
             raise error.TestFail('Did not find version %s in log output' %
                                  version_match.group(1))
 
 
     def _check_crashing_process(self, username, consent=True):
@@ skipping 217 matching lines @@
                               'reporter_shutdown',
                               'no_crash',
                               'chronos_crasher',
                               'chronos_crasher_no_consent',
                               'root_crasher',
                               'root_crasher_no_consent',
                               'max_enqueued_crashes',
                               'core_file_persists_in_debug',
                               'core_file_removed_in_production'],
                               initialize_crash_reporter = True)