This is a Turbofan escape analysis bug, escape analysis is off by default.

ClusterFuzz has detected this issue as fixed in range 38961:38963.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5126879606734848

Fuzzer: mbarbella_js_mutation
Job Type: linux_v8_d8_be
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000300000000
Crash State:
  v8::internal::Invoke
  v8::internal::Execution::Call
  v8::Script::Run
  
Regressed: V8: r37458:37466
Fixed: V8: r38961:38963

Minimized Testcase (0.28 Kb):
Download: https://cluster-fuzz.appspot.com/download/AMIfv942KDJW9y4HiYly6-fjLTKnlsMhr5upHpuOMkH4p6e5xlWoH7GroV51CbYeEKl4XItDmAPucfL-Ce62b4zXSFlrFzUuyHyyZapUUCh_p28bsVMYqgPxRsdMCuMdLNUn-J2AdbQaalZoijLFmgteui3WICoqqQ?testcase_id=5126879606734848
MjsUnitAssertionError.prototype.toString = function () { return this.message; };
function __f_2() {
}
try {
async function __f_4() {
}
async function __f_5() {
    await __f_4();
}
} catch(e) {; }
try {
(function() {
})();
} catch(e) {; }
  for (var __v_10 = 0; __v_10 < 2; __v_10++) {
  }


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.

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot