providing Findit results for internal purpose:

Suspected CLs: Findit could not determine the memory tool from the stacktrace. Is it in a new format?

unable to find the culprit, requesting Dev team to check check the issue.

yosin@ stack trace looks in editing code and shadow dom.

In review: http://crrev.com/2147163002

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/05e5ea2e6b758852ef19ee78cd4a7285ab1a1950

commit 05e5ea2e6b758852ef19ee78cd4a7285ab1a1950
Author: yosin <yosin@chromium.org>
Date: Thu Jul 14 07:14:43 2016

Make removeStyleFromRulesAndContext() to use style resolver within style clean

This patch makes |EditingStyle::removeStyleFromRulesAndContext()| to call
|styleFromMatchedRulesForElement()| within style clean.

BUG= 627692 
TEST=LayoutTests/editing/execCommand/insert_list/insert_list_in_summary_crash.html

Review-Url: https://codereview.chromium.org/2147163002
Cr-Commit-Position: refs/heads/master@{#405445}

[add] https://crrev.com/05e5ea2e6b758852ef19ee78cd4a7285ab1a1950/third_party/WebKit/LayoutTests/editing/execCommand/insert_list/insert_list_in_summary_crash.html
[modify] https://crrev.com/05e5ea2e6b758852ef19ee78cd4a7285ab1a1950/third_party/WebKit/Source/core/editing/EditingStyle.cpp

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/05e5ea2e6b758852ef19ee78cd4a7285ab1a1950

commit 05e5ea2e6b758852ef19ee78cd4a7285ab1a1950
Author: yosin <yosin@chromium.org>
Date: Thu Jul 14 07:14:43 2016

Make removeStyleFromRulesAndContext() to use style resolver within style clean

This patch makes |EditingStyle::removeStyleFromRulesAndContext()| to call
|styleFromMatchedRulesForElement()| within style clean.

BUG= 627692 
TEST=LayoutTests/editing/execCommand/insert_list/insert_list_in_summary_crash.html

Review-Url: https://codereview.chromium.org/2147163002
Cr-Commit-Position: refs/heads/master@{#405445}

[add] https://crrev.com/05e5ea2e6b758852ef19ee78cd4a7285ab1a1950/third_party/WebKit/LayoutTests/editing/execCommand/insert_list/insert_list_in_summary_crash.html
[modify] https://crrev.com/05e5ea2e6b758852ef19ee78cd4a7285ab1a1950/third_party/WebKit/Source/core/editing/EditingStyle.cpp

ClusterFuzz has detected this issue as fixed in range 405185:405467.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5774245456248832

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_debug_content_shell_drt
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  !node.needsDistributionRecalc() in FlatTreeTraversal.h
  blink::FlatTreeTraversal::assertPrecondition
  blink::FlatTreeTraversal::parent
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_debug_content_shell_drt&range=325288:325413
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_debug_content_shell_drt&range=405185:405467

Minimized Testcase (0.43 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97gg-s84yfi9kpfH0iUs5AlqisZJI7e0Ti3TyZlUbQhUOJE77CwrVRBYDwAtc47q-MEzT0mpIoLgkz2fthM-UlNgutCcMglM7qyCcwrpn_NLhqLiQ0L7hsDZ6aKV1Nw2VoMaDiGQ3PIQXasKIx5QhATB1b4AQ?testcase_id=5774245456248832

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.

Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

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