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Issue metadata

Status: Assigned
Owner:
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 1
Type: Bug



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CHECK failure: proto_->file_attrs().size() == num_event_types in perf_reader.cc

Project Member Reported by ClusterFuzz, Nov 8

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6621296303276032

Fuzzer: libFuzzer_chromeos_quipper_perf_reader_read_fuzzer
Job Type: libfuzzer_ubsan_chromeos
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  proto_->file_attrs().size() == num_event_types in perf_reader.cc
  quipper::PerfReader::ReadEventTypesSection
  quipper::PerfReader::ReadFileData
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_ubsan_chromeos&range=3110653:3111064

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6621296303276032

Issue filed automatically.

See https://chromium.googlesource.com/chromiumos/docs/+/master/fuzzing.md#Reproducing-crashes-from-ClusterFuzz for more information.
 
Project Member

Comment 1 by ClusterFuzz, Nov 8

Cc: lakshm...@chomium.org gmx@chromium.org chongjiang@chromium.org
Labels: ClusterFuzz-Auto-CC
Automatically adding ccs based on OWNERS file / target commit history.

If this is incorrect, please add ClusterFuzz-Wrong label.
Cc: -manojgupta@google.com manojgupta@chromium.org
Cc: cmt...@chromium.org
Cc: lakshm...@chromium.org
Owner: lakshm...@chromium.org
Components: OS>Systems
Project Member

Comment 7 by ClusterFuzz, Dec 1

Labels: -Reproducible Unreproducible
ClusterFuzz testcase 6621296303276032 appears to be flaky, updating reproducibility label.
Labels: -Unreproducible Reproducible
Please ignore the last comment about testcase being unreproducible. The testcase is still reproducible. This happened due to a code refactoring on ClusterFuzz side, and the underlying root cause is now fixed. Resetting the label back to Reproducible. Sorry about the inconvenience caused from these incorrect notifications.
Project Member

Comment 9 by ClusterFuzz, Dec 4

Labels: -Reproducible Unreproducible
ClusterFuzz testcase 6621296303276032 appears to be flaky, updating reproducibility label.
Labels: -Unreproducible Reproducible
Please ignore the last comment about testcase being unreproducible. 
The testcase is still reproducible. 
This was caused by a bug in ClusterFuzz that has been fixed. 
Sorry again for the inconvenience.
Status: Assigned (was: Untriaged)
This issue has an owner, a component and a priority, but is still listed as untriaged or unconfirmed. By definition, this bug is triaged. Changing status to "assigned". Please reach out to me if you disagree with how I've done this.

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