Predator and CL could not provide any possible suspects.

Using Code Search for the file, "rtptransport.cc" suspecting the below Cl might have caused this issue

Suspect CL: https://webrtc.googlesource.com/src.git/+/cd3fc5d90cb3914a4329b32a3d319824d5f5eddf%5E%21/pc/rtptransport.cc

zhihuang@ -- Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

Thanks!

I think this is caused by one of my recent change which has been reverted already.
https://webrtc-review.googlesource.com/c/src/+/65381

The reverted change hasn't been imported into chromium now. (Should be imported soon I hope).

Could you please verify that after the change is imported?

ClusterFuzz has detected this issue as fixed in range 546861:546887.

Detailed report: https://clusterfuzz.com/testcase?key=4818773262204928

Fuzzer: phoglund_webrtc_peerconnection
Job Type: linux_tsan_chrome_mp
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000018
Crash State:
  webrtc::RtpTransport::OnWritableState
  void sigslot::_opaque_connection::emitter<webrtc::RtpTransport, rtc::PacketTrans
  cricket::DtlsTransport::set_writable
  
Sanitizer: thread (TSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_tsan_chrome_mp&range=546382:546390
Fixed: https://clusterfuzz.com/revisions?job=linux_tsan_chrome_mp&range=546861:546887

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4818773262204928

Additional requirements: Requires HTTP

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.

ClusterFuzz testcase 4818773262204928 is verified as fixed, so closing issue as verified.

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