Assigning to the concern owner from Find it results --
The result is a list of CLs that change the crashed files. 

Author: junov
Project: chromium
Changelist: https://chromium.googlesource.com/chromium/src/+/aaee8c63e6a1716c78b5e5715e1f96b8df4ed1e3
Time: Wed Dec 21 21:59:14 2016
Lines 118-123, 1256 of file HTMLCanvasElement.cpp which potentially caused crash are changed in this cl (frame #2, "createTransparentSkImage"; frame #3, "blink::HTMLCanvasElement::getSourceImageForCanvas").
Minimum distance from crash line to modified line: 0. (file: HTMLCanvasElement.cpp, crashed on: 1253, modified: 1253).

@junov -- 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/+/f24759eb82410ae9383cc527bb6aecb7f72d2747

commit f24759eb82410ae9383cc527bb6aecb7f72d2747
Author: junov <junov@chromium.org>
Date: Thu Dec 22 21:30:15 2016

Add missing null pointer check in HTMLCanvasElement.cpp

Fixing an oversight from previous CL:
https://codereview.chromium.org/2594093002/

BUG= 676585 
TBR=xlai@chromium.org

Review-Url: https://codereview.chromium.org/2598963004
Cr-Commit-Position: refs/heads/master@{#440509}

[modify] https://crrev.com/f24759eb82410ae9383cc527bb6aecb7f72d2747/third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp

ClusterFuzz has detected this issue as fixed in range 440490:440591.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5961328499097600

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_lsan_chrome_mp
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000028
Crash State:
  refCachedImage
  SkSurface::makeImageSnapshot
  createTransparentSkImage
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_lsan_chrome_mp&range=440099:440242
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_lsan_chrome_mp&range=440490:440591

Minimized Testcase (19.08 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97VkTscJ_yRcII1QaCLgehk7C_UT-KNd7YneqtEfpbJ5Uqe50K9h8ksJLua2VHyYilb6uMh_jbpMq15r-n5X6ke_7fQKe9aY4-8ZDn9s8-IHBmAXi3WqKbirDr5HNjHOzyM1SHM_Uld82TuyMsY6inK4QG8A9_ELYaq35y5augZ2Xi2lY0?testcase_id=5961328499097600

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 5961328499097600 is verified as fixed, so closing issue.

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