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Issue 656149 link

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Issue metadata

Status: Fixed
Owner:
Last visit > 30 days ago
Closed: Oct 2016
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Crash in SkOpSpanBase::segment

Project Member Reported by ClusterFuzz, Oct 14 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5099701861089280

Fuzzer: skia_pathop_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000000
Crash State:
  SkOpSpanBase::segment
  SkOpSpan::containsCoincidence
  SkOpSpan::insertCoincidence
  

Minimized Testcase (0.29 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97LoubrzvBBN7xKb4wnzO8ZtTm0GNWbAHelQgyX6IWVvbwA0zbnLgu3gLYfZbzpAJGHsZY4xCSiBCr8Qnh1EXYMlLHp9cIFtrr4BsW2eGbZsItosXv6x7CV920hEr0z3sJtl2Rt0bWz2hFACLjrQf-onM05VQ?testcase_id=5099701861089280

Issue manually filed by: mummareddy

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
 
Components: Infra>Git Internals>Skia
Labels: M-54 Te-Logged
Owner: caryclark@chromium.org
Status: Assigned (was: Untriaged)

Author: Cary Clark
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/e47ae2998c1cf944db5743a416583dd0f042b6d9
Time: Wed Oct 05 12:51:39 2016
The CL last changed line 1294 of file SkOpCoincidence.cpp, which is stack frame 3.

Author: Cary Clark
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/e47ae2998c1cf944db5743a416583dd0f042b6d9
Time: Wed Oct 05 12:51:39 2016
The CL last changed line 305 of file SkPathOpsCommon.cpp, which is stack frame 4.

Author: Cary Clark
Project: chromium-skia
Changelist: https://chromium.googlesource.com/skia.git/+/ab87d7abf1df007c90bef2e916294ca325d81c81
Time: Tue Oct 04 14:01:04 2016
The CL last changed line 321 of file SkPathOpsOp.cpp, which is stack frame 5.
Owner: caryclark@google.com
Status: Started (was: Assigned)
Project Member

Comment 5 by bugdroid1@chromium.org, Oct 17 2016

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2afb06e34a43d462e519875ed2787f782f6cf86f

commit 2afb06e34a43d462e519875ed2787f782f6cf86f
Author: skia-deps-roller <skia-deps-roller@chromium.org>
Date: Mon Oct 17 16:28:57 2016

Roll src/third_party/skia/ dc87a7d8e..27f93e00d (3 commits).

https://chromium.googlesource.com/skia.git/+log/dc87a7d8ea51..27f93e00d23d

$ git log dc87a7d8e..27f93e00d --date=short --no-merges --format='%ad %ae %s'
2016-10-17 borenet RecreateSKPs: Fix another .join() issue
2016-10-17 caryclark fix some fuzz
2016-10-17 fmalita Avoid SkImage ref churn in short lived SkBitmapProvider

BUG= 654939 , 655829 , 656149 

CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel
TBR=mtklein@google.com

Review-Url: https://codereview.chromium.org/2424853002
Cr-Commit-Position: refs/heads/master@{#425695}

[modify] https://crrev.com/2afb06e34a43d462e519875ed2787f782f6cf86f/DEPS

Status: Fixed (was: Started)
Project Member

Comment 7 by ClusterFuzz, Oct 18 2016

ClusterFuzz has detected this issue as fixed in range 425682:425723.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5099701861089280

Fuzzer: skia_pathop_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000000
Crash State:
  SkOpSpanBase::segment
  SkOpSpan::containsCoincidence
  SkOpSpan::insertCoincidence
  
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan&range=425682:425723

Minimized Testcase (0.29 Kb): https://cluster-fuzz.appspot.com/download/AMIfv97LoubrzvBBN7xKb4wnzO8ZtTm0GNWbAHelQgyX6IWVvbwA0zbnLgu3gLYfZbzpAJGHsZY4xCSiBCr8Qnh1EXYMlLHp9cIFtrr4BsW2eGbZsItosXv6x7CV920hEr0z3sJtl2Rt0bWz2hFACLjrQf-onM05VQ?testcase_id=5099701861089280

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.
Project Member

Comment 8 by sheriffbot@chromium.org, Nov 22 2016

Labels: -Restrict-View-EditIssue
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

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