Predator could not provide any possible suspects.
Using CL Search for the file, "NavigatorVR.cpp" assigning to the concern owner who might be related or worked on similar file.

Suspect CL:https://chromium.googlesource.com/chromium/src/+/2a63db5f510828de8e371fd1f3836d8463d20b89

bajones@ -- Could you please look into the issue, kindly re-assign if this is not related to your changes.


Thank You.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/bdb88e9cdf49ab7d656c475e9c114d2bf78bb4b6

commit bdb88e9cdf49ab7d656c475e9c114d2bf78bb4b6
Author: Anna Maria <offenwanger@chromium.org>
Date: Wed Sep 27 22:08:25 2017

Fix null-dereference when VR navigator is detached

Added in a nullptr check for when the navigator has a detached window.

Bug:  766498 
Change-Id: Ia103761f3673b518428f9e34f6b7082d952b3407
Reviewed-on: https://chromium-review.googlesource.com/685818
Reviewed-by: Brandon Jones <bajones@chromium.org>
Commit-Queue: Anna Maria <offenwanger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#504780}
[add] https://crrev.com/bdb88e9cdf49ab7d656c475e9c114d2bf78bb4b6/third_party/WebKit/LayoutTests/vr/latest/navigator_vr_early_detached.html
[modify] https://crrev.com/bdb88e9cdf49ab7d656c475e9c114d2bf78bb4b6/third_party/WebKit/Source/modules/vr/NavigatorVR.cpp

ClusterFuzz has detected this issue as fixed in range 504724:504793.

Detailed report: https://clusterfuzz.com/testcase?key=5553410337406976

Fuzzer: inferno_layout_test_unmodified
Job Type: mac_asan_content_shell
Platform Id: mac

Crash Type: Null-dereference READ
Crash Address: 0x000000000020
Crash State:
  blink::Frame::GetPage
  blink::NavigatorVR::NavigatorVR
  blink::NavigatorVR::From
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_content_shell&range=502656:502703
Fixed: https://clusterfuzz.com/revisions?job=mac_asan_content_shell&range=504724:504793

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5553410337406976

See https://github.com/google/clusterfuzz-tools 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 5553410337406976 is verified as fixed, so closing issue as verified.

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