Predator and CL could not provide any possible suspects.
Using the code search for the file, “mediasession.cc” assigning to concern owner from GIT blame.
Suspecting Commit#
https://webrtc.git.corp.google.com/src.git/+/1c378ed83b5b32a00368bbfc3ce2ee7687691abe

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

Note: As the suspect is out of chromium, adding suspect in CC.

Thank You.

Same issue: https://bugs.chromium.org/p/chromium/issues/detail?id=773620#c45

The fix CL https://webrtc-review.googlesource.com/9621 is blocked by a Chromium web platform test.

ClusterFuzz has detected this issue as fixed in range 512106:512120.

Detailed report: https://clusterfuzz.com/testcase?key=5970264780439552

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_asan_chrome_v8_arm
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  IsMediaContentOfType(current_content, MEDIA_TYPE_AUDIO) in mediasession.cc
  [vdso]
  cricket::MediaSessionDescriptionFactory::CreateAnswer
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_v8_arm&range=508972:508976
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_v8_arm&range=512106:512120

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5970264780439552

See https://github.com/google/clusterfuzz-tools for more information.

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

The fix is landed. Closing the issue.

ClusterFuzz testcase 5970264780439552 is verified as fixed, so closing issue as verified.

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