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Issue metadata

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



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Undefined-shift in SkUTF8_NextUnichar

Project Member Reported by ClusterFuzz, Jul 29 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6340541548855296

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Undefined-shift
Crash Address: 
Crash State:
  SkUTF8_NextUnichar
  SkFindAndPlaceGlyph::UtfNGlyphFinder::lookupGlyph
  SkFindAndPlaceGlyph::GlyphFindAndPlaceFullPixel<GrTextUtils::DrawBmpText
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=489418:489502

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6340541548855296


Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
 
Components: Internals>Skia
Labels: M-62 Test-Predator-Wrong-CLs
Project Member

Comment 2 by ClusterFuzz, Aug 2 2017

ClusterFuzz has detected this issue as fixed in range 490952:491022.

Detailed report: https://clusterfuzz.com/testcase?key=6340541548855296

Fuzzer: libFuzzer_paint_op_buffer_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Undefined-shift
Crash Address: 
Crash State:
  SkUTF8_NextUnichar
  SkFindAndPlaceGlyph::UtfNGlyphFinder::lookupGlyph
  SkFindAndPlaceGlyph::GlyphFindAndPlaceFullPixel<GrTextUtils::DrawBmpText
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=489418:489502
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=490952:491022

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6340541548855296


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.
Project Member

Comment 3 by ClusterFuzz, Aug 2 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase 6340541548855296 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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