Skia CL ::
https://chromium.googlesource.com/skia/+log/eaf6d4102258c867b3101aadfbd6ffb9d17d429e..d876a4b549998addbef76c1985f605b8213d86b2?pretty=fuller

Possible suspect from the above CL:
https://codereview.chromium.org/2128633003

caryclark@ Could you please look into this issue if is related to your change,else please help us in finding the appropriate owner for this issue.

Thanks,

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6293821952622592

Fuzzer: libfuzzer_skia_pathop_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

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

Minimized Testcase (0.43 Kb): https://cluster-fuzz.appspot.com/download/AMIfv96aQScqBwlgVmSuLCb5YaJw7SRo8H0RXthbW1DAEmaV3jAoPvVDmaEvIwhQExRHG0wb9hJ1GiBFa8JS4He9qM3sWTkr0Q77p7Tzqkpgy2TzXE7Lc9l5I9JwDrLdJXeZfqsuZoTKzCFLpdTXZg-VKbB5iR31LA?testcase_id=6293821952622592

Filer: rnimmagadda

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.

The following revision refers to this bug:
  https://skia.googlesource.com/skia.git/+/fc560e09b3f777bb32dccb9f52d715383a10a620

commit fc560e09b3f777bb32dccb9f52d715383a10a620
Author: caryclark <caryclark@google.com>
Date: Wed Jul 27 15:46:10 2016

fuzz wednesday

Add debug 'skip assert' access to SkCoincidentSpans.
That permits suppressing asserts to make it easier
to detect when this fuzz data generates unparsable
data.

TBR=reed@google.com
BUG= 631564 ,  631992 
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2186973002

Review-Url: https://codereview.chromium.org/2186973002

[modify] https://crrev.com/fc560e09b3f777bb32dccb9f52d715383a10a620/src/pathops/SkOpCoincidence.cpp
[modify] https://crrev.com/fc560e09b3f777bb32dccb9f52d715383a10a620/src/pathops/SkOpCoincidence.h
[modify] https://crrev.com/fc560e09b3f777bb32dccb9f52d715383a10a620/src/pathops/SkOpSpan.h
[modify] https://crrev.com/fc560e09b3f777bb32dccb9f52d715383a10a620/tests/PathOpsOpTest.cpp

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b8093c0e629c888bad9b0da0d1f477fa6d1c6bc9

commit b8093c0e629c888bad9b0da0d1f477fa6d1c6bc9
Author: skia-deps-roller <skia-deps-roller@chromium.org>
Date: Wed Jul 27 18:30:06 2016

Roll src/third_party/skia/ 735109c24..89da69303 (10 commits).

https://chromium.googlesource.com/skia.git/+log/735109c24892..89da69303550

$ git log 735109c24..89da69303 --date=short --no-merges --format='%ad %ae %s'
2016-07-27 halcanary DEPS: ICU c291cde → ec9c113
2016-07-27 halcanary DEPS:  harfbuzz 1.2.7 → 1.3.0
2016-07-27 halcanary DEPS:  sfntly 130f832 → 468cad5
2016-07-27 borenet Include "revision" tag for all Swarming tasks
2016-07-27 brianosman Fix ParseConfigs_ViaParsing test when skia_angle=1
2016-07-27 bsalomon Fix leak of srgb/adobesrgb colorspace objects
2016-07-27 borenet Fix Perf data upload
2016-07-27 bsalomon SW backend for viewer on Windows GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2182273002
2016-07-27 caryclark fuzz wednesday
2016-07-27 mtklein Clean up some unused atomic routines.

BUG= 631564 , 631992 

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

Review-Url: https://codereview.chromium.org/2187903002
Cr-Commit-Position: refs/heads/master@{#408192}

[modify] https://crrev.com/b8093c0e629c888bad9b0da0d1f477fa6d1c6bc9/DEPS

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5279027682344960

Fuzzer: libfuzzer_skia_pathop_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  segment
  containsCoincidence
  SkOpSpan::insertCoincidence
  
Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=406010:406169

Minimized Testcase (0.43 Kb): https://cluster-fuzz.appspot.com/download/AMIfv964lsiUcZJ_3maesJVk-M9uMJ0-TygeTBxj0XbvrLQNvNKIzWhAR58gQvKkxIQwBLbZEJNOEWuXc0jjrmefOnakY_uI7cGlDvDfZgPMEgU56SiL2GYuwgcgXG543qE63h0Xc_a5KeyZuIfNXWZLnAuy9qOn6w?testcase_id=5279027682344960

Filer: tanin

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.

testcase in #6 passes with CL mentioned in #4

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