Predator could not provide any possible suspects.
Using Code Search for the file, "fuzzed_host_resolver.cc" assigning to the concern owner who might be related or worked on similar file.

Suspect CL : https://chromium.googlesource.com/chromium/src/+/a2d01bae3fbe6fd4c6433ef1163350d25945b298

fdoray@ -- Could you please look into the issue, kindly re-assign if this is not related to your changes.


Thank You.

ClusterFuzz has detected this issue as fixed in range 509045:509075.

Detailed report: https://clusterfuzz.com/testcase?key=5521939769851904

Fuzzer: libFuzzer_net_url_request_ftp_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  network_task_runner_->BelongsToCurrentThread() in fuzzed_host_resolver.cc
  net::FuzzedHostResolverProc::Resolve
  net::HostResolverImpl::ProcTask::DoLookup
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=504110:504235
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=509045:509075

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5521939769851904

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.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 5521939769851904 is verified as fixed, so closing issue as verified.

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