bsalomon@, can you please have a look or suggest a better owner? Thanks!

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

If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA.

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

The following revision refers to this bug:
  https://skia.googlesource.com/skia/+/e9bf6dc100e2ce913ee000273e1879ebc1ffbafd

commit e9bf6dc100e2ce913ee000273e1879ebc1ffbafd
Author: Brian Salomon <bsalomon@google.com>
Date: Tue Aug 08 15:38:30 2017

Don't compare against uninit edge in SkPath::conservativelyContainsRect

Bug:  chromium:752478 

Change-Id: Ic281f06b300329ea9823b3eb76cc56b7a43fd2a5
Reviewed-on: https://skia-review.googlesource.com/31520
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

[modify] https://crrev.com/e9bf6dc100e2ce913ee000273e1879ebc1ffbafd/tests/PathTest.cpp
[modify] https://crrev.com/e9bf6dc100e2ce913ee000273e1879ebc1ffbafd/src/core/SkPath.cpp

ClusterFuzz has detected this issue as fixed in range 492827:492892.

Detailed report: https://clusterfuzz.com/testcase?key=5354117936709632

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  check_edge_against_rect
  SkPath::conservativelyContainsRect
  SkClipStack::Element::contains
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=491121:491239
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=492827:492892

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5354117936709632

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 5354117936709632 is verified as fixed, so closing issue as verified.

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

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