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Issue 853875 link

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Issue metadata

Status: Verified
Owner:
Closed: Jun 2018
Cc:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 3
Type: Bug



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Abrt in rtc::webrtc_checks_impl::FatalLog

Project Member Reported by ClusterFuzz, Jun 18 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5052459912003584

Fuzzer: libFuzzer_audio_processing_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: Abrt
Crash Address: 0x05390000267b
Crash State:
  rtc::webrtc_checks_impl::FatalLog
  Call<>
  webrtc::BlockBuffer::ExtractExtendedBlock
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=567943:567948

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5052459912003584

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
 
Project Member

Comment 1 by ClusterFuzz, Jun 18 2018

Cc: mflodman@webrtc.org kwiberg@webrtc.org henrika@webrtc.org
Labels: ClusterFuzz-Auto-CC
Automatically adding ccs based on OWNERS file / target commit history.

If this is incorrect, please add ClusterFuzz-Wrong label.
Project Member

Comment 2 by ClusterFuzz, Jun 18 2018

Cc: jonasolsson@webrtc.org
Labels: Test-Predator-Auto-CC
Automatically adding ccs based on suspected regression changelists:

Refactor checks to use a copy of the new logging backend. by jonasolsson@webrtc.org - https://webrtc.googlesource.com/src/+/f8e5c110ee806992f4092220339939fe5c2d3cc9

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label.
Labels: -Pri-1 Pri-3
Owner: aleloi@chromium.org
Status: Assigned (was: Untriaged)
This looks like a false positive. Both the crash and original stacktrace correctly aborts after a DCHECK fails. It's reported as an abort on unknown address, probably because the check code has been changed slightly.

@aleloi: What's the sensible thing to do here? Do we need to register the new abort() address somewhere?
Project Member

Comment 4 by ClusterFuzz, Jun 20 2018

ClusterFuzz has detected this issue as fixed in range 568676:568680.

Detailed report: https://clusterfuzz.com/testcase?key=5052459912003584

Fuzzer: libFuzzer_audio_processing_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: Abrt
Crash Address: 0x05390000267b
Crash State:
  rtc::webrtc_checks_impl::FatalLog
  Call<>
  webrtc::BlockBuffer::ExtractExtendedBlock
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=567943:567948
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=568676:568680

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5052459912003584

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
Project Member

Comment 5 by ClusterFuzz, Jun 20 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5052459912003584 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

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