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Issue metadata

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



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Undefined-shift in bool agg::rasterizer_scanline_aa::sweep_scanline<agg::scanline_u<unsigned char>

Project Member Reported by ClusterFuzz, Apr 5 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5843273055993856

Fuzzer: libfuzzer_pdfium_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Undefined-shift
Crash Address: 
Crash State:
  bool agg::rasterizer_scanline_aa::sweep_scanline<agg::scanline_u<unsigned char> 
  void agg::render_scanlines<agg::rasterizer_scanline_aa, agg::scanline_u<unsigned
  CFX_AggDeviceDriver::RenderRasterizer
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=461821:461873

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv95xF9eVjNuDE8nz6I3w1yVAmOCZgdyNXHUo-5cXhWrFlY35wP0FZERM98OM2Iw2gQEKgPLYhwz5X24GfO6uTjGU0JTiXq4fRFONtilSJ2VxIH2GY3nRDcbZ1up5L7N7N9Kjd4kMqK-u3bd7DJ7hoLsTGVOrrC2kzwNcAyBTBFElJTUpp-OKenss7Zk52vsOlC7v61THLWWrmeNuA-3KLUUzBEtOFQxsS_YcUoyLQBhoMyb2oCDFPyPLbX7TGq5gVLdurMjWSDOoBzxbSgJ26Tz6aAf-R_w2djhYD5o6aF7NxYPCMUJTVF62tmn2-jJZfvY4vkHwpFeZumoxnF5lMV-K9di5U5lnf5tSlPiUEgv5jqgMer0qpPCFf-aC-ttUaHGN72RB5IV0e6u8QW-kCo852NZtBg?testcase_id=5843273055993856


Issue filed automatically.

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

Comment 1 by ClusterFuzz, Apr 5 2017

ClusterFuzz has detected this issue as fixed in range 461873:461928.

Detailed report: https://clusterfuzz.com/testcase?key=5843273055993856

Fuzzer: libfuzzer_pdfium_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Undefined-shift
Crash Address: 
Crash State:
  bool agg::rasterizer_scanline_aa::sweep_scanline<agg::scanline_u<unsigned char> 
  void agg::render_scanlines<agg::rasterizer_scanline_aa, agg::scanline_u<unsigned
  CFX_AggDeviceDriver::RenderRasterizer
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=461821:461873
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=461873:461928

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv95xF9eVjNuDE8nz6I3w1yVAmOCZgdyNXHUo-5cXhWrFlY35wP0FZERM98OM2Iw2gQEKgPLYhwz5X24GfO6uTjGU0JTiXq4fRFONtilSJ2VxIH2GY3nRDcbZ1up5L7N7N9Kjd4kMqK-u3bd7DJ7hoLsTGVOrrC2kzwNcAyBTBFElJTUpp-OKenss7Zk52vsOlC7v61THLWWrmeNuA-3KLUUzBEtOFQxsS_YcUoyLQBhoMyb2oCDFPyPLbX7TGq5gVLdurMjWSDOoBzxbSgJ26Tz6aAf-R_w2djhYD5o6aF7NxYPCMUJTVF62tmn2-jJZfvY4vkHwpFeZumoxnF5lMV-K9di5U5lnf5tSlPiUEgv5jqgMer0qpPCFf-aC-ttUaHGN72RB5IV0e6u8QW-kCo852NZtBg?testcase_id=5843273055993856


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 2 by ClusterFuzz, Apr 5 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase 5843273055993856 is verified as fixed, so closing issue.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

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