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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 14 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4857848963268608

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::SetClipMask
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=464733:464736

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv96_O6AiX2gqkJeRuj8xdyHooB3tduSGrfwtqDl_73P-qzSn8Xlb_oSWddJXC07G8oPoW_5n4Y3MkKWK3iWNl0P2XWaCouxmt-RpVxZBkZecuDCmfULZQCXyQ0omJCTlKCc5SuAcIt8Vy3guZ6t7Jvws_x64Db1ZvGwZeCfz2XX2ke8aeIiMxaGfHt7zk5q5ewu3th4jOdg9kXuUeD8todllc9AKugIgoXK1g_nFJeIFOdNcHI9qOFg0ss8rt_u0pU6LcFQuFAqC46zhgu48hHz7H-2QPkyayqHPpyHPegK31oIBcW_gyu6hk0YqjJVR4a1PTtvOu1qF15Q8HpHvyatM33xWhG5wF8dW34_Hq9Fzq2L3kIk?testcase_id=4857848963268608


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 15 2017

ClusterFuzz has detected this issue as fixed in range 464736:464747.

Detailed report: https://clusterfuzz.com/testcase?key=4857848963268608

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::SetClipMask
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=464733:464736
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=464736:464747

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv96_O6AiX2gqkJeRuj8xdyHooB3tduSGrfwtqDl_73P-qzSn8Xlb_oSWddJXC07G8oPoW_5n4Y3MkKWK3iWNl0P2XWaCouxmt-RpVxZBkZecuDCmfULZQCXyQ0omJCTlKCc5SuAcIt8Vy3guZ6t7Jvws_x64Db1ZvGwZeCfz2XX2ke8aeIiMxaGfHt7zk5q5ewu3th4jOdg9kXuUeD8todllc9AKugIgoXK1g_nFJeIFOdNcHI9qOFg0ss8rt_u0pU6LcFQuFAqC46zhgu48hHz7H-2QPkyayqHPpyHPegK31oIBcW_gyu6hk0YqjJVR4a1PTtvOu1qF15Q8HpHvyatM33xWhG5wF8dW34_Hq9Fzq2L3kIk?testcase_id=4857848963268608


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 15 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase 4857848963268608 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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