ClusterFuzz has detected this issue as fixed in range 549059:549062.

Detailed report: https://clusterfuzz.com/testcase?key=6604234224304128

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::MouseEventManager::GetDragState
  blink::MouseEventManager::TryStartDrag
  blink::MouseEventManager::HandleDrag
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=508795:508862
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=549059:549062

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6604234224304128

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 6604234224304128 is verified as fixed, so closing issue as verified.

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