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Issue metadata

Status: Verified
Owner:
Closed: Dec 2017
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Integer-overflow in SkEdge::setLine

Project Member Reported by ClusterFuzz, Oct 18 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4705423688204288

Fuzzer: libFuzzer_skia_path_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  SkEdge::setLine
  SkEdgeBuilder::addLine
  SkEdgeBuilder::addClipper
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=507320:507324

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4705423688204288

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Oct 18 2017

Labels: Test-Predator-AutoOwner
Owner: benjamin...@google.com
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://skia.googlesource.com/skia/+/3cd0bef0fd9d062bbcc313c329b4f31925e8ded7 (Fix a couple float-cast-overflow in SkScan*.).

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.

Comment 2 by mmoroz@chromium.org, Oct 24 2017

For more information, please see https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md.

The link referenced in the description is no longer valid.
Labels: -Test-Predator-AutoOwner Test-Predator-Auto-Owner
Project Member

Comment 4 by ClusterFuzz, Dec 20 2017

ClusterFuzz has detected this issue as fixed in range 525156:525174.

Detailed report: https://clusterfuzz.com/testcase?key=4705423688204288

Fuzzer: libFuzzer_skia_path_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  SkEdge::setLine
  SkEdgeBuilder::addLine
  SkEdgeBuilder::addClipper
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=507320:507324
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=525156:525174

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4705423688204288

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.
Project Member

Comment 5 by ClusterFuzz, Dec 20 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 4705423688204288 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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