As per the  Issue 774477  owner, assigning this issue to @pwnall.
@pwnall -- Could you please look into this issue, kindly reassign if it has nothing to do with your changes.
Thanks.

pnangunoori@: Previous clusterfuzz bugs that I've received has a link to https://chromium.googlesource.com/chromium/src/+/lkgr/testing/libfuzzer/reproducing.md which was very helpful. Can you put together something like that for this class of bugs too? At the very least, it should explain setting up an asan build, figuring out the correct target, and symbolizing the result of ASAN builds.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/69c24baa344f64f11e00dbde4066ffbe7fee5b1f

commit 69c24baa344f64f11e00dbde4066ffbe7fee5b1f
Author: Victor Costan <pwnall@chromium.org>
Date: Tue Oct 17 06:21:30 2017

Fix renderer crash on reading cookieStore on DOMWindow of detached iframe.

The crash can only occur when the "Enable Experimental Web Platform
Features" flag is turned on.

Bug:  774626 
Change-Id: I4e8170d2c82db53d8bacd5c8586ef4cce3000be4
Reviewed-on: https://chromium-review.googlesource.com/722038
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#509302}
[add] https://crrev.com/69c24baa344f64f11e00dbde4066ffbe7fee5b1f/third_party/WebKit/LayoutTests/http/tests/storage/async_cookies/bug774626.html
[modify] https://crrev.com/69c24baa344f64f11e00dbde4066ffbe7fee5b1f/third_party/WebKit/Source/modules/cookie_store/GlobalCookieStore.cpp

ClusterFuzz has detected this issue as fixed in range 509282:509316.

Detailed report: https://clusterfuzz.com/testcase?key=6573441867317248

Fuzzer: inferno_layout_test_unmodified
Job Type: windows_asan_content_shell
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x00000000
Crash State:
  service_manager::InterfaceProvider::GetInterface
  service_manager::InterfaceProvider::GetInterface<network::mojom::blink::Restrict
  blink::GlobalCookieStoreImpl<blink::LocalDOMWindow>::GetCookieStore
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_content_shell&range=508465:508529
Fixed: https://clusterfuzz.com/revisions?job=windows_asan_content_shell&range=509282:509316

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6573441867317248

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 6573441867317248 is verified as fixed, so closing issue as verified.

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

 Issue 774477  has been merged into this issue.

Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.