Timeout in skia_pathop_fuzzer |
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Issue descriptionDetailed report: https://clusterfuzz.com/testcase?key=6163338005577728 Fuzzer: libFuzzer_skia_pathop_fuzzer Job Type: libfuzzer_chrome_ubsan Platform Id: linux Crash Type: Timeout (exceeds 25 secs) Crash Address: Crash State: skia_pathop_fuzzer Sanitizer: undefined (UBSAN) Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6163338005577728 Issue filed automatically. See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information. Note: This crash might not be reproducible with the provided testcase. That said, for the past 14 days we've been seeing this crash frequently. If you are unable to reproduce this, please try a speculative fix based on the crash stacktrace in the report. The fix can be verified by looking at the crash statistics in the report, a day after the fix is deployed. We will auto-close the bug if the crash is not seen for 14 days.
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Sep 15 2017
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Sep 30 2017
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Oct 17 2017
Yeah still cannot repro and CF seems to report as flaky, but still showing up sometimes. Cary, do you see anything to take action on in the stack trace here?
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Oct 18 2017
The following revision refers to this bug: https://skia.googlesource.com/skia/+/43938b8533dbee75816726b54737e410097428ce commit 43938b8533dbee75816726b54737e410097428ce Author: Cary Clark <caryclark@skia.org> Date: Wed Oct 18 13:09:06 2017 add fuzzer timeout escape SkOpSegment::moveNearby may loop for a long time, maybe forever. The longest loop isolated is 500 in a fuzzer generated test, and 50 in a real world test. Add an escape hatch to abandon the op after 9999 loops. While this puts a limit on the complexity path ops can handle, realistically paths this complex fail otherwise. TBR:hcm@google.com Bug: 764699 Change-Id: Iad62b9d505b94b2c2845ad2874342ac90478642e Reviewed-on: https://skia-review.googlesource.com/61200 Reviewed-by: Cary Clark <caryclark@skia.org> Commit-Queue: Cary Clark <caryclark@skia.org> [modify] https://crrev.com/43938b8533dbee75816726b54737e410097428ce/src/pathops/SkOpSegment.cpp
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Oct 18 2017
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Comment 1 by pnangunoori@chromium.org
, Sep 13 2017Labels: Test-Predator-Wrong-CLs