syslog: Add capability to ignore kernel failures

Adds capability to ignore kernel failures to jobs. This is done by
adding 'syslog' dict to config dictionary which holds the 'ignorelist'
of kernel failures.

Also removes old kernel failurs from exclude list.

Fixes: https://tracker.ceph.com/issues/50150
Signed-off-by: Kotresh HR <khiremat@redhat.com>

teuthology/run.py

@@ -224,7 +224,7 @@ def get_initial_tasks(lock, config, machine_type):
             {'internal.archive': None},
             {'internal.coredump': None},
             {'internal.sudo': None},
-            {'internal.syslog': None},
+            {'internal.syslog': config.get('syslog', {})},
         ])
     init_tasks.append({'internal.timer': None})
 

teuthology/task/internal/syslog.py

@@ -102,56 +102,21 @@ def syslog(ctx, config):
         # flush the file fully. oh well.
 
         log.info('Checking logs for errors...')
+        exclude_errors = config.get('ignorelist', [])
+        log.info('Exclude error list: {0}'.format(exclude_errors))
         for rem in cluster.remotes.keys():
             log.debug('Checking %s', rem.name)
-            stdout = rem.sh(
-                [
+            args = [
                     'egrep', '--binary-files=text',
-                    '\\bBUG\\b|\\bINFO\\b|\\bDEADLOCK\\b',
+                    '\\bBUG\\b|\\bINFO\\b|\\bDEADLOCK\\b|\\bOops\\b|\\bWARNING\\b|\\bKASAN\\b',
                     run.Raw(f'{archive_dir}/syslog/kern.log'),
-                    run.Raw('|'),
-                    'grep', '-v', 'task .* blocked for more than .* seconds',
-                    run.Raw('|'),
-                    'grep', '-v', 'lockdep is turned off',
-                    run.Raw('|'),
-                    'grep', '-v', 'trying to register non-static key',
-                    run.Raw('|'),
-                    'grep', '-v', 'DEBUG: fsize',  # xfs_fsr
-                    run.Raw('|'),
-                    'grep', '-v', 'CRON',  # ignore cron noise
-                    run.Raw('|'),
-                    'grep', '-v', 'BUG: bad unlock balance detected',  # #6097
-                    run.Raw('|'),
-                    'grep', '-v', 'inconsistent lock state',  # FIXME see #2523
-                    run.Raw('|'),
-                    'grep', '-v', '*** DEADLOCK ***',  # part of lockdep output
-                    run.Raw('|'),
-                    'grep', '-v',
-                    # FIXME see #2590 and #147
-                    'INFO: possible irq lock inversion dependency detected',
-                    run.Raw('|'),
-                    'grep', '-v',
-                    'INFO: NMI handler (perf_event_nmi_handler) took too long to run',  # noqa
-                    run.Raw('|'),
-                    'grep', '-v', 'INFO: recovery required on readonly',
-                    run.Raw('|'),
-                    'grep', '-v', 'ceph-create-keys: INFO',
-                    run.Raw('|'),
-                    'grep', '-v', 'INFO:ceph-create-keys',
-                    run.Raw('|'),
-                    'grep', '-v', 'Loaded datasource DataSourceOpenStack',
-                    run.Raw('|'),
-                    'grep', '-v', 'container-storage-setup: INFO: Volume group backing root filesystem could not be determined',  # noqa
-                    run.Raw('|'),
-                    'egrep', '-v', '\\bsalt-master\\b|\\bsalt-minion\\b|\\bsalt-api\\b',
-                    run.Raw('|'),
-                    'grep', '-v', 'ceph-crash',
-                    run.Raw('|'),
-                    'egrep', '-v', '\\btcmu-runner\\b.*\\bINFO\\b',
-                    run.Raw('|'),
-                    'head', '-n', '1',
-                ],
-            )
+            ]
+            for exclude in exclude_errors:
+                args.extend([run.Raw('|'), 'egrep', '-v', exclude])
+            args.extend([
+                run.Raw('|'), 'head', '-n', '1',
+            ])
+            stdout = rem.sh(args)
             if stdout != '':
                 log.error('Error in syslog on %s: %s', rem.name, stdout)
                 set_status(ctx.summary, 'fail')