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Switch fuzz task to UTaskLocalExecutor and improve fuzzer setup robustness #5070

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Switch fuzz task to UTaskLocalExecutor and improve fuzzer setup robustness #5070

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44f9318
Switch fuzz task to UTaskLocalExecutor and improve fuzzer setup robus…
google-labs-jules[bot] Dec 9, 2025
6e85284
Enable local data bundle download for UTaskLocalExecutor in fuzz task.
google-labs-jules[bot] Dec 9, 2025
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4 changes: 3 additions & 1 deletion src/clusterfuzz/_internal/bot/tasks/setup.py
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@
from clusterfuzz._internal.base import tasks
from clusterfuzz._internal.base import utils
from clusterfuzz._internal.base.tasks import task_utils
from clusterfuzz._internal.bot.tasks import task_types
from clusterfuzz._internal.bot import testcase_manager
from clusterfuzz._internal.bot.tasks.utasks import uworker_handle_errors
from clusterfuzz._internal.bot.tasks.utasks import uworker_io
Expand Down Expand Up @@ -494,7 +495,8 @@ def update_data_bundle(
# case, the fuzzer will generate testcases from a gcs bucket periodically.
if not _is_search_index_data_bundle(data_bundle.name):

if not (take_trusted_host_path() and data_bundle.sync_to_worker):
if not (take_trusted_host_path() and data_bundle.sync_to_worker and
task_types.task_main_runs_on_uworker()):
logs.info('Data bundles: normal path.')
result = corpus_manager.sync_data_bundle_corpus_to_disk(
data_bundle_corpus, data_bundle_directory)
Expand Down
2 changes: 1 addition & 1 deletion src/clusterfuzz/_internal/bot/tasks/task_types.py
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Expand Up @@ -225,7 +225,7 @@ def execute(self, task_argument, job_type, uworker_env):
'analyze': UTask,
'blame': TrustedTask,
'corpus_pruning': UTask,
'fuzz': UTask,
'fuzz': UTaskLocalExecutor,
'impact': TrustedTask,
'minimize': UTask,
'progression': UTask,
Expand Down
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