Predator and CL could not provide any possible suspects.
Using the code search for the file, “circular_deque.h” assigning to concern owner from GIT blame.
Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/322a546987240f49b57e4408edb0c987d62ba968

@brettw -- Could you please look into this issue, kindly reassign if it has nothing to do with your changes.
Thank You.

ClusterFuzz has detected this issue as fixed in range 516777:516819.

Detailed report: https://clusterfuzz.com/testcase?key=4686889117548544

Fuzzer: libFuzzer_mediasource_MP4_AACLC_AVC_pipeline_integration_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  i >= begin_ && i < end_ in circular_deque.h
  base::circular_deque<scoped_refptr<media::StreamParserBuffer> >::CheckValidIndex
  base::internal::circular_deque_const_iterator<scoped_refptr<media::StreamParserB
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=506151:506187
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=516777:516819

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4686889117548544

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.

ClusterFuzz testcase 4686889117548544 is verified as fixed, so closing issue as verified.

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