ClusterFuzz has detected this issue as fixed in range 445525:445725.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5275492564598784

Fuzzer: lcamtuf_cross_fuzz
Job Type: linux_ubsan_vptr_chrome
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  receiver->IsJSFunction() in objects.cc
  v8::internal::JSReceiver::GetCreationContext
  v8::Object::CreationContext
  extensions::ObjectBackedNativeHandler::ContextCanAccessObject
  
Sanitizer: undefined (UBSAN)

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_vptr_chrome&range=441524:442831
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_ubsan_vptr_chrome&range=445525:445725

Minimized Testcase (5.65 Kb): https://cluster-fuzz.appspot.com/download/AMIfv942wmMbDQGuQuUIVOJvtDo6BQaq5vWzotQt9xvNHhv0zzlJ2G60RH0QsyPgyiRG3eljfvK_M4bbWpV7oc7EPiM4j8w7WwqEApzWD6jLAIvr_MYH1_p5N9a8JA0KljdAqP7i1_ucBtjhZXWlpge4OgB1jU-Ncibtv3hP2y3qX4QCQ9SDDkvbC-Svsuc8lqAwclcjTwij32KhRYRsy104ihLlgy-JZl8gHS88UKVrcUPF-8PBMHoHvcdruZ5SkfuxUHnddbmYLR0EMXCQu12Oqh8f8TE4-yXLhiEvuGgke6Ov_fzHUawmz5XYG8I3bbcwZi6Sh9S700G6zdIxMfjiDyrc4rSNbq05ZV17pKe26721Xruq2NdF91apM58PKpXfZsWQjlkFRfULGQOVpeoJzxBvZPM5pA?testcase_id=5275492564598784

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 5275492564598784 is verified as fixed, so closing issue.

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