Predator and CL could not provide any possible suspects.

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

Suspect CL: https://chromium.googlesource.com/chromium/src/+/57baa774bfecb02345e30c95ad8a6ddc3e6a0092

danakj@ -- 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!

ClusterFuzz has detected this issue as fixed in range 571581:571582.

Detailed report: https://clusterfuzz.com/testcase?key=5479772231303168

Fuzzer: tokenfuzz_pdf_curated
Job Type: linux_tsan_chrome_mp
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  viz::SingleReleaseCallback::Run
  viz::ClientResourceProvider::RemoveImportedResource
  cc::TextureLayerImpl::FreeTransferableResource
  
Sanitizer: thread (TSAN)

Fixed: https://clusterfuzz.com/revisions?job=linux_tsan_chrome_mp&range=571581:571582

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5479772231303168

Additional requirements: Requires Gestures

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.