This issue is a security regression. If you are not able to fix this quickly, please revert the change that introduced it.

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Hi, it looks like https://codereview.chromium.org/2304023003 moved StackFrameDepth from a static global to a heap-allocated structure (ThreadHeap), which results in m_stackFrameLimit being uninitialized - mind taking a look at this, keishi@?

ClusterFuzz has detected this issue as fixed in range 417414:417566.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5373086939742208

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_msan_content_shell_drt
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  blink::TraceMethodDelegate<blink::PersistentBase<blink::DOMArrayBuffer,
  blink::PersistentRegion::tracePersistentNodes
  blink::ThreadState::visitPersistents
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_content_shell_drt&range=416899:416952
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_content_shell_drt&range=417414:417566

Minimized Testcase (7.41 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97n1yfDfA46-GoshzI5eXQDga4AwYsJQg-GC7cEmokkoCADSjZDVXzr36-RF26-C78UIsZm2r1yAGg52Wo8PHr6GjSqIhOjAkLvD8ka5mGdly7-qC4A4RZyvDPfvMvD62KO2k2VmsdVpbCcWy8ryk6X87Lfxg?testcase_id=5373086939742208

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.

keishi@, any idea which change fixed this?

It's r417525
https://chromium.googlesource.com/chromium/src/+/e798dd999cfedf2d337967890f973e468eb092a9

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