Currently its impacting the latest Stable (51.0.2704.84) and Beta (52.0.2743.41.

Findit did not produce any suspected CLs.

From code search on the crashed file "CompositeEditCommand.cpp" recent changes made might be suspect.
Suspect : https://codereview.chromium.org/2073643002
joone.hur@ : Could you please take a look into this if its related to your change.
yosin@ : Referring to  Issue 614246 , assigned to you.

Moving this nonessential bug to the next milestone.

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

could you attach the test case?

ClusterFuzz has detected this testcase as flaky and is unable to reproduce it in the original crash revision. Skipping fixed testing check and marking it as potentially fixed.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5087559277608960

Fuzzer: bj_broddelwerk
Job Type: linux_asan_chrome_mp
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000048
Crash State:
  blink::CompositeEditCommand::insertNodeAfter
  blink::InsertLineBreakCommand::doApply
  blink::CompositeEditCommand::applyCommandToComposite
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_asan_chrome_mp&range=172836:173286

Unminimized Testcase: https://cluster-fuzz.appspot.com/download/AMIfv942y867PDwwdsOQl1eFdJwzuYcw3xX6pA2cyUtzeP_OaemAs36i642n__WYElSKQjgPCFqsqCxV2fSfGA05oUtakJQd9IXIKDS9eHl-O9Jo_nbsBkblwdKc5CEbr2IzsLP61kWwzob8XExYZ0XMFkpDErVX1HbPtbo33WHSQecVLOOHDV0?testcase_id=5087559277608960


Additional requirements: Requires Gestures

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.

Mark WontFix according to #c5

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