This issue is a security regression. If you are not able to fix this quickly, please revert the change that introduced it.

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

caryclark: Would you mind taking a look at this?

ClusterFuzz has detected this issue as fixed in range 439626:439695.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5415733619326976

Fuzzer: libfuzzer_skia_pathop_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  SkOpPtT::addOpp
  SkOpContour::joinSegments
  SkOpContourHead::joinAllSegments
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=438538:438687
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=439626:439695

Minimized Testcase (0.24 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95YJN3Kscb38iMeggqwofaZOArrVvrx713F2M7drrAM-1c71E0X2SSmFxM_ji3wWz40O_nNot3zlfP-EJhHIWBeZkVYhetJDOiqL3Ph-XFMxOJmLKdEn_KNWSTEqacZex6U_uyucF0kVxP2KVAanW4KzW8yHA?testcase_id=5415733619326976

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md 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 5415733619326976 is verified as fixed, so closing issue.

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

The following revision refers to this bug:
  https://skia.googlesource.com/skia.git/+/8e444a68024bf1e082bbfffe12ae08c981bb26d3

commit 8e444a68024bf1e082bbfffe12ae08c981bb26d3
Author: Cary Clark <caryclark@google.com>
Date: Tue Dec 20 17:52:34 2016

check for empty contours in sortable top

TBR=reed@google.com
BUG= 675132 

Change-Id: I022ce0c59574b450e47e22a3dac0929034439b1b
Reviewed-on: https://skia-review.googlesource.com/6334
Reviewed-by: Cary Clark <caryclark@google.com>
Commit-Queue: Cary Clark <caryclark@google.com>

[modify] https://crrev.com/8e444a68024bf1e082bbfffe12ae08c981bb26d3/src/pathops/SkPathOpsWinding.cpp

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/911fd06007472f0c79e31ba8947d8edf4661daa8

commit 911fd06007472f0c79e31ba8947d8edf4661daa8
Author: skia-deps-roller <skia-deps-roller@chromium.org>
Date: Tue Dec 20 23:38:42 2016

Roll src/third_party/skia/ 86cedfc31..6ad3d2fa3 (11 commits).

https://skia.googlesource.com/skia.git/+log/86cedfc31588..6ad3d2fa3858

$ git log 86cedfc31..6ad3d2fa3 --date=short --no-merges --format='%ad %ae %s'
2016-12-20 halcanary xps.gni
2016-12-20 bsalomon Rename batch->op in GrAuditTrail.
2016-12-20 brianosman Add color space xform to GrMagnifierEffect
2016-12-20 bsalomon Rename files, macros, types, and functions related to GrDrawOp testing.
2016-12-20 bsalomon Remove the last "batch tracker" from AAStrokeRectOp.
2016-12-20 brianosman Add color space xform support to GrDisplacementEffect
2016-12-20 brianosman Add color space xform bits to key for texture domain effect
2016-12-20 robertphillips Fix more Skia filter fuzzer bugs
2016-12-20 caryclark check for empty contours in sortable top
2016-12-20 bsalomon GPU: Fix for fuzzer issue for sw-rendered paths with large bounds.
2016-12-19 robertphillips Fix mapping from src to dst image space in SkAlphaThresholdFilter

BUG= 675132 , 675315 , 675332 

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, see:
http://www.chromium.org/developers/tree-sheriffs/sheriff-details-chromium#TOC-Failures-due-to-DEPS-rolls

CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel
TBR=rmistry@google.com

Review-Url: https://codereview.chromium.org/2590913005
Cr-Commit-Position: refs/heads/master@{#439928}

[modify] https://crrev.com/911fd06007472f0c79e31ba8947d8edf4661daa8/DEPS

This bug has been closed for more than 14 weeks. Removing security view restrictions.

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