Through code search on file "Database.cpp", suspecting the below change
Review URL: https://codereview.chromium.org/2375733003

jsbell@ - Observed some recent changes on this file, so assigning to you. Could you please check if this is caused with respect to this change, if not please help us in reassign the issue to the right owner.

ClusterFuzz has detected this issue as fixed in range 421488:421508.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4577243131281408

Fuzzer: lcamtuf_cross_fuzz
Job Type: linux_asan_chrome_mp
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000000
Crash State:
  blink::Database::runTransaction
  blink::Database::changeVersion
  blink::DatabaseV8Internal::changeVersionMethodCallback
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_chrome_mp&range=420502:420630
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_chrome_mp&range=421488:421508

Minimized Testcase (5.61 Kb): https://cluster-fuzz.appspot.com/download/AMIfv96EJL_UrUR5M-4vilMfSyKrcnyCI0K3gtCv_PLV6yVyBroeGz7GKfidZYKa3kwv7znN0RMAyQu95E_QEcZxC9z20ZXIOIaDL-Y1ZcHruUNkxgEJK-5cEkuquXl-eR4lB1Q5NSbtRxQ1xr7mnP5STcblCal7cg?testcase_id=4577243131281408

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs 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 is verified as fixed, closing issue.

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

This looks like another missing null check for getExecutionContext() - probably racy rather than actually fixed.

Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

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