Pointer-overflow in SkOpEdgeBuilder::walk |
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Issue descriptionDetailed report: https://clusterfuzz.com/testcase?key=5030949696569344 Fuzzer: libFuzzer_skia_pathop_fuzzer Job Type: libfuzzer_chrome_ubsan Platform Id: linux Crash Type: Pointer-overflow Crash Address: Crash State: SkOpEdgeBuilder::walk SkOpEdgeBuilder::finish OpDebug Sanitizer: undefined (UBSAN) Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=551565:551569 Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5030949696569344 Issue filed automatically. See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
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Apr 19 2018
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/8c591c43c8d508412f44887b7d483003b7ce932b (Enable UBSan's pointer overflow check.). If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.
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Apr 20 2018
The CL in question enabled the check that found this, but isn't the right culprit. The pointer overflow here isn't interesting, this should just be a null deref.
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Jun 1 2018
ClusterFuzz has detected this issue as fixed in range 563530:563537. Detailed report: https://clusterfuzz.com/testcase?key=5030949696569344 Fuzzer: libFuzzer_skia_pathop_fuzzer Job Type: libfuzzer_chrome_ubsan Platform Id: linux Crash Type: Pointer-overflow Crash Address: Crash State: SkOpEdgeBuilder::walk SkOpEdgeBuilder::finish OpDebug Sanitizer: undefined (UBSAN) Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=551565:551569 Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=563530:563537 Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5030949696569344 See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information. If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
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Jun 1 2018
ClusterFuzz testcase 5030949696569344 is verified as fixed, so closing issue as verified. If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue. |
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Comment 1 by ClusterFuzz
, Apr 19 2018Labels: Test-Predator-Auto-Components