def _query_and_upload_strategy_probabilities(engine):
"""Uploads queried data into datastore.
Calls query functions and uploads query results
to datastore to use as new probabilities. Probabilities
are based on new_edges feature."""
strategy_data = []
data = _query_multi_armed_bandit_probabilities(engine)
logs.log('Queried distribution for {}.'.format(engine.name))
# TODO(mukundv): Update once we choose a temperature parameter for final
# implementation.
for row in data:
curr_strategy = data_types.FuzzStrategyProbability()
curr_strategy.strategy_name = str(row['strategy'])
curr_strategy.probability = float(row['bandit_weight'])
curr_strategy.engine = engine.name
strategy_data.append(curr_strategy)
query = data_types.FuzzStrategyProbability.query(
data_types.FuzzStrategyProbability.engine == engine.name)
ndb_utils.delete_multi(
[entity.key for entity in ndb_utils.get_all_from_query(query)])
ndb_utils.put_multi(strategy_data)
logs.log('Uploaded queried distribution to ndb for {}'.format(engine.name))
_store_probabilities_in_bigquery(engine, data)
logs.log('Uploaded queried distribution to BigQuery for {}'.format(
engine.name))
def execute_task(*_):
"""Execute the report uploads."""
logs.log('Uploading pending reports.')
# Get metadata for reports requiring upload.
reports_metadata = ndb_utils.get_all_from_query(
data_types.ReportMetadata.query(
ndb_utils.is_false(data_types.ReportMetadata.is_uploaded)))
reports_metadata = list(reports_metadata)
if not reports_metadata:
logs.log('No reports that need upload found.')
return
environment.set_value('UPLOAD_MODE', 'prod')
# Otherwise, upload corresponding reports.
logs.log('Uploading reports for testcases: %s' %
str([report.testcase_id for report in reports_metadata]))
report_metadata_to_delete = []
for report_metadata in reports_metadata:
# Convert metadata back into actual report.
crash_info = crash_uploader.crash_report_info_from_metadata(
report_metadata)
testcase_id = report_metadata.testcase_id
try:
_ = data_handler.get_testcase_by_id(testcase_id)
except errors.InvalidTestcaseError:
logs.log_warn('Could not find testcase %s.' % testcase_id)
report_metadata_to_delete.append(report_metadata.key)
continue
# Upload the report and update the corresponding testcase info.
logs.log('Processing testcase %s for crash upload.' % testcase_id)
crash_report_id = crash_info.upload()
if crash_report_id is None:
logs.log_error(
'Crash upload for testcase %s failed, retry later.' %
testcase_id)
continue
# Update the report metadata to indicate successful upload.
report_metadata.crash_report_id = crash_report_id
report_metadata.is_uploaded = True
report_metadata.put()
logs.log('Uploaded testcase %s to crash, got back report id %s.' %
(testcase_id, crash_report_id))
time.sleep(1)
# Delete report metadata entries where testcase does not exist anymore or
# upload is not supported.
if report_metadata_to_delete:
ndb_utils.delete_multi(report_metadata_to_delete)
# Log done with uploads.
# Deletion happens in batches in cleanup_task, so that in case of error there
# is some buffer for looking at stored ReportMetadata in the meantime.
logs.log('Finished uploading crash reports.')
def update_mappings_for_fuzzer(fuzzer, mappings=None):
"""Clear existing mappings for a fuzzer, and replace them."""
if mappings is None:
mappings = fuzzer.jobs
query = data_types.FuzzerJob.query()
query = query.filter(data_types.FuzzerJob.fuzzer == fuzzer.name)
entities = ndb_utils.get_all_from_query(query)
old_mappings = {}
for entity in entities:
old_mappings[entity.job] = entity
new_mappings = []
for job_name in mappings:
mapping = old_mappings.pop(job_name, None)
if mapping:
continue
job = data_types.Job.query(data_types.Job.name == job_name).get()
if not job:
logs.log_error('An unknown job %s was selected for fuzzer %s.' %
(job_name, fuzzer.name))
continue
mapping = data_types.FuzzerJob()
mapping.fuzzer = fuzzer.name
mapping.job = job_name
mapping.platform = job.platform
new_mappings.append(mapping)
ndb_utils.put_multi(new_mappings)
ndb_utils.delete_multi([m.key for m in list(old_mappings.values())])
def update_platform_for_job(job_name, new_platform):
"""Update platform for all mappings for a particular job."""
query = data_types.FuzzerJob.query()
query = query.filter(data_types.FuzzerJob.job == job_name)
mappings = ndb_utils.get_all_from_query(query)
new_mappings = []
for mapping in mappings:
mapping.platform = new_platform
new_mappings.append(mapping)
ndb_utils.put_multi(new_mappings)
def get_similar_issues(issue_tracker, testcase, only_open=True):
"""Get issue objects that seem to be related to a particular test case."""
# Get list of issues using the search query.
keywords = get_search_keywords(testcase)
issues = issue_tracker.find_issues(keywords=keywords, only_open=only_open)
if issues:
issues = list(issues)
else:
issues = []
issue_ids = [issue.id for issue in issues]
# Add issues from similar testcases sharing the same group id.
if testcase.group_id:
group_query = data_types.Testcase.query(
data_types.Testcase.group_id == testcase.group_id)
similar_testcases = ndb_utils.get_all_from_query(group_query)
for similar_testcase in similar_testcases:
if not similar_testcase.bug_information:
continue
# Exclude issues already added above from search terms.
issue_id = int(similar_testcase.bug_information)
if issue_id in issue_ids:
continue
# Get issue object using ID.
issue = issue_tracker.get_issue(issue_id)
if not issue:
continue
# If our search criteria allows open bugs only, then check issue and
# testcase status so as to exclude closed ones.
if (only_open and (not issue.is_open or not testcase.open)):
continue
issues.append(issue)
issue_ids.append(issue_id)
return issues
def get_fuzz_target_jobs(fuzz_target_name=None,
engine=None,
job=None,
limit=None):
"""Return a Datastore query for fuzz target to job mappings."""
query = data_types.FuzzTargetJob.query()
if fuzz_target_name:
query = query.filter(
data_types.FuzzTargetJob.fuzz_target_name == fuzz_target_name)
if job:
query = query.filter(data_types.FuzzTargetJob.job == job)
if engine:
query = query.filter(data_types.FuzzTargetJob.engine == engine)
if limit is not None:
return query.iter(limit=limit)
return ndb_utils.get_all_from_query(query)
def get_fuzz_task_payload(platform=None):
"""Select a fuzzer that can run on this platform."""
if not platform:
queue_override = environment.get_value('QUEUE_OVERRIDE')
platform = queue_override if queue_override else environment.platform()
if environment.is_local_development():
query = data_types.FuzzerJob.query()
query = query.filter(data_types.FuzzerJobs.platform == platform)
mappings = list(ndb_utils.get_all_from_query(query))
else:
query = data_types.FuzzerJobs.query()
query = query.filter(data_types.FuzzerJobs.platform == platform)
mappings = []
for entity in query:
mappings.extend(entity.fuzzer_jobs)
if not mappings:
return None, None
selection = utils.random_weighted_choice(mappings,
weight_attribute='actual_weight')
return selection.fuzzer, selection.job
def update_fuzzer_and_data_bundles(fuzzer_name):
"""Update the fuzzer with a given name if necessary."""
fuzzer = data_types.Fuzzer.query(
data_types.Fuzzer.name == fuzzer_name).get()
if not fuzzer:
logs.log_error('No fuzzer exists with name %s.' % fuzzer_name)
raise errors.InvalidFuzzerError
# Set some helper environment variables.
fuzzer_directory = get_fuzzer_directory(fuzzer_name)
environment.set_value('FUZZER_DIR', fuzzer_directory)
environment.set_value('UNTRUSTED_CONTENT', fuzzer.untrusted_content)
# If the fuzzer generates large testcases or a large number of small ones
# that don't fit on tmpfs, then use the larger disk directory.
if fuzzer.has_large_testcases:
testcase_disk_directory = environment.get_value('FUZZ_INPUTS_DISK')
environment.set_value('FUZZ_INPUTS', testcase_disk_directory)
# Adjust the test timeout, if user has provided one.
if fuzzer.timeout:
environment.set_value('TEST_TIMEOUT', fuzzer.timeout)
# Increase fuzz test timeout if the fuzzer timeout is higher than its
# current value.
fuzz_test_timeout = environment.get_value('FUZZ_TEST_TIMEOUT')
if fuzz_test_timeout and fuzz_test_timeout < fuzzer.timeout:
environment.set_value('FUZZ_TEST_TIMEOUT', fuzzer.timeout)
# Adjust the max testcases if this fuzzer has specified a lower limit.
max_testcases = environment.get_value('MAX_TESTCASES')
if fuzzer.max_testcases and fuzzer.max_testcases < max_testcases:
environment.set_value('MAX_TESTCASES', fuzzer.max_testcases)
# Check for updates to this fuzzer.
version_file = os.path.join(fuzzer_directory, '.%s_version' % fuzzer_name)
if (not fuzzer.builtin
and revisions.needs_update(version_file, fuzzer.revision)):
logs.log('Fuzzer update was found, updating.')
# Clear the old fuzzer directory if it exists.
if not shell.remove_directory(fuzzer_directory, recreate=True):
logs.log_error('Failed to clear fuzzer directory.')
return None
# Copy the archive to local disk and unpack it.
archive_path = os.path.join(fuzzer_directory, fuzzer.filename)
if not blobs.read_blob_to_disk(fuzzer.blobstore_key, archive_path):
logs.log_error('Failed to copy fuzzer archive.')
return None
try:
archive.unpack(archive_path, fuzzer_directory)
except Exception:
error_message = (
'Failed to unpack fuzzer archive %s '
'(bad archive or unsupported format).') % fuzzer.filename
logs.log_error(error_message)
fuzzer_logs.upload_script_log('Fatal error: ' + error_message,
fuzzer_name=fuzzer_name)
return None
fuzzer_path = os.path.join(fuzzer_directory, fuzzer.executable_path)
if not os.path.exists(fuzzer_path):
error_message = (
'Fuzzer executable %s not found. '
'Check fuzzer configuration.') % fuzzer.executable_path
logs.log_error(error_message)
fuzzer_logs.upload_script_log('Fatal error: ' + error_message,
fuzzer_name=fuzzer_name)
return None
# Make fuzzer executable.
os.chmod(fuzzer_path, 0o750)
# Cleanup unneeded archive.
shell.remove_file(archive_path)
# Save the current revision of this fuzzer in a file for later checks.
revisions.write_revision_to_revision_file(version_file,
fuzzer.revision)
logs.log('Updated fuzzer to revision %d.' % fuzzer.revision)
_clear_old_data_bundles_if_needed()
# Setup data bundles associated with this fuzzer.
data_bundles = ndb_utils.get_all_from_query(
data_types.DataBundle.query(
data_types.DataBundle.name == fuzzer.data_bundle_name))
for data_bundle in data_bundles:
if not update_data_bundle(fuzzer, data_bundle):
return None
# Setup environment variable for launcher script path.
if fuzzer.launcher_script:
fuzzer_launcher_path = os.path.join(fuzzer_directory,
fuzzer.launcher_script)
environment.set_value('LAUNCHER_PATH', fuzzer_launcher_path)
# For launcher script usecase, we need the entire fuzzer directory on the
# worker.
if environment.is_trusted_host():
from clusterfuzz._internal.bot.untrusted_runner import file_host
worker_fuzzer_directory = file_host.rebase_to_worker_root(
fuzzer_directory)
file_host.copy_directory_to_worker(fuzzer_directory,
worker_fuzzer_directory,
replace=True)
return fuzzer
def _get_job_list_for_fuzzer(fuzzer):
"""Helper function to return the mappings for a fuzzer as a list."""
query = data_types.FuzzerJob.query()
query.filter(data_types.FuzzerJob.fuzzer == fuzzer.name)
return [m.job for m in ndb_utils.get_all_from_query(query)]
def _check_and_update_similar_bug(testcase, issue_tracker):
"""Get list of similar open issues and ones that were recently closed."""
# Get similar testcases from the same group.
similar_testcases_from_group = []
if testcase.group_id:
group_query = data_types.Testcase.query(
data_types.Testcase.group_id == testcase.group_id)
similar_testcases_from_group = ndb_utils.get_all_from_query(
group_query, batch_size=data_types.TESTCASE_ENTITY_QUERY_LIMIT // 2)
# Get testcases with the same crash params. These might not be in the a group
# if they were just fixed.
same_crash_params_query = data_types.Testcase.query(
data_types.Testcase.crash_type == testcase.crash_type,
data_types.Testcase.crash_state == testcase.crash_state,
data_types.Testcase.security_flag == testcase.security_flag,
data_types.Testcase.project_name == testcase.project_name,
data_types.Testcase.status == 'Processed')
similar_testcases_from_query = ndb_utils.get_all_from_query(
same_crash_params_query,
batch_size=data_types.TESTCASE_ENTITY_QUERY_LIMIT // 2)
for similar_testcase in itertools.chain(similar_testcases_from_group,
similar_testcases_from_query):
# Exclude ourself from comparison.
if similar_testcase.key.id() == testcase.key.id():
continue
# Exclude similar testcases without bug information.
if not similar_testcase.bug_information:
continue
# Get the issue object given its ID.
issue = issue_tracker.get_issue(similar_testcase.bug_information)
if not issue:
continue
# If the reproducible issue is not verified yet, bug is still valid and
# might be caused by non-availability of latest builds. In that case,
# don't file a new bug yet.
if similar_testcase.open and not similar_testcase.one_time_crasher_flag:
return True
# If the issue is still open, no need to file a duplicate bug.
if issue.is_open:
return True
# If the issue indicates that this crash needs to be ignored, no need to
# file another one.
policy = issue_tracker_policy.get(issue_tracker.project)
ignore_label = policy.label('ignore')
if ignore_label in issue.labels:
_add_triage_message(
testcase,
('Skipping filing a bug since similar testcase ({testcase_id}) in '
'issue ({issue_id}) is blacklisted with {ignore_label} label.'
).format(
testcase_id=similar_testcase.key.id(),
issue_id=issue.id,
ignore_label=ignore_label))
return True
# If the issue is recently closed, wait certain time period to make sure
# our fixed verification has completed.
if (issue.closed_time and not dates.time_has_expired(
issue.closed_time, hours=data_types.MIN_ELAPSED_TIME_SINCE_FIXED)):
_add_triage_message(
testcase,
('Delaying filing a bug since similar testcase '
'({testcase_id}) in issue ({issue_id}) was just fixed.').format(
testcase_id=similar_testcase.key.id(), issue_id=issue.id))
return True
return False
def redo_testcase(testcase, tasks, user_email):
"""Redo specific tasks for a testcase."""
for task in tasks:
if task not in VALID_REDO_TASKS:
raise InvalidRedoTask(task)
minimize = 'minimize' in tasks
regression = 'regression' in tasks
progression = 'progression' in tasks
impact = 'impact' in tasks
blame = 'blame' in tasks
task_list = []
testcase_id = testcase.key.id()
# Metadata keys to clear based on which redo tasks were selected.
metadata_keys_to_clear = ['potentially_flaky']
if minimize:
task_list.append('minimize')
testcase.minimized_keys = ''
testcase.set_metadata('redo_minimize', True, update_testcase=False)
metadata_keys_to_clear += [
'env', 'current_minimization_phase_attempts', 'minimization_phase'
]
# If this testcase was archived during minimization, update the state.
testcase.archive_state &= ~data_types.ArchiveStatus.MINIMIZED
if regression:
task_list.append('regression')
testcase.regression = ''
metadata_keys_to_clear += [
'last_regression_min', 'last_regression_max'
]
if progression:
task_list.append('progression')
testcase.fixed = ''
testcase.open = True
testcase.last_tested_crash_stacktrace = None
testcase.triaged = False
testcase.set_metadata('progression_pending',
True,
update_testcase=False)
metadata_keys_to_clear += [
'last_progression_min', 'last_progression_max',
'last_tested_revision'
]
if impact:
task_list.append('impact')
testcase.is_impact_set_flag = False
if blame:
task_list.append('blame')
testcase.set_metadata('blame_pending', True, update_testcase=False)
testcase.set_metadata('predator_result', None, update_testcase=False)
for key in metadata_keys_to_clear:
testcase.delete_metadata(key, update_testcase=False)
testcase.comments += '[%s] %s: Redo task(s): %s\n' % (
utils.current_date_time(), user_email, ', '.join(sorted(task_list)))
testcase.one_time_crasher_flag = False
testcase.put()
# Allow new notifications to be sent for this testcase.
notifications = ndb_utils.get_all_from_query(data_types.Notification.query(
data_types.Notification.testcase_id == testcase.key.id()),
keys_only=True)
ndb_utils.delete_multi(notifications)
# If we are re-doing minimization, other tasks will be done automatically
# after minimization completes. So, don't add those tasks.
if minimize:
add_task('minimize', testcase_id, testcase.job_type,
queue_for_testcase(testcase))
else:
if regression:
add_task('regression', testcase_id, testcase.job_type,
queue_for_testcase(testcase))
if progression:
add_task('progression', testcase_id, testcase.job_type,
queue_for_testcase(testcase))
if impact:
add_task('impact', testcase_id, testcase.job_type,
queue_for_testcase(testcase))
if blame:
add_task('blame', testcase_id, testcase.job_type,
queue_for_testcase(testcase))
