It seems related to this: https://bugs.chromium.org/p/chromium/issues/detail?id=658167

ClusterFuzz has detected this issue as fixed in range 429267:429335.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=4820493254524928

Fuzzer: inferno_twister_custom_bundle
Job Type: linux_msan_chrome
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  blink::LayoutObject::clearIsScrollAnchorObject
  blink::PaintLayer::~PaintLayer
  blink::PaintLayer::~PaintLayer
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_chrome&range=428077:428329
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_msan_chrome&range=429267:429335

Minimized Testcase (9.13 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95ffUULRBvvuOEBpzhgOD0I-7vsxtuqdKT9qnhA8GGZhaC9SAsJhr6ckL1r1AJ9fgnr176F9MUG42B3nTZTTgZaQDz4UDtVc6gyZlZqd2Q_sTOzuE5YjrnCNQZfKEO1HKYEIy_d-JNbw_XsGqGVU0bHOv3_xA?testcase_id=4820493254524928

Additional requirements: Requires HTTP

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