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Issue 686539 link

Starred by 2 users

Issue metadata

Status: Verified
Owner:
Closed: Mar 2017
Cc:
Components:
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, Jan 29 2017

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5401392685776896

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://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=395640:395746

Minimized Testcase (0.25 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95RkA_sRyeWUmGFFG39kN7bd_d0oO9G29Dis7L7Q8ya_cXQ8JaCdTFOV08qdgeuxsId0iP1f91IQ7M02IpkzUAuuj8q3-boB-ZjG7_AMd0I6sphKhQ7y9Gcd25woytI9Y_929RE0krTcX25u11CyokFVe5qROpJKYMf9Y9vNR5vpeFeJD35pcCHH7oHDoDmE-JqU-l6Rd01Q6Tfxa1N0rzcnJnZFs-Ma3u8MYiqyHdSOS-wbjQ_wR4fBvTPSekUF083Q58lBhi-9PzsY37kGvVpZiDFH2vf50Idkbs4B13r8wq-lSg1zZi3b0Df5X4nEQgn48SEX7r9aXFxELzP21Iw97lZyBB1ucO0XoZLSsmxMxektBI?testcase_id=5401392685776896

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
 
Components: Internals>Plugins>PDF
Cc: tsepez@chromium.org kcc@chromium.org aizatsky@chromium.org mmoroz@google.com
Labels: Test-Predator-Wrong M-58
Owner: dsinclair@chromium.org
Status: Assigned (was: Untriaged)
Project Member

Comment 4 by ClusterFuzz, Mar 23 2017

ClusterFuzz has detected this issue as fixed in range 458791:458840.

Detailed report: https://clusterfuzz.com/testcase?key=5401392685776896

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=395640:395746
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=458791:458840

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv95RkA_sRyeWUmGFFG39kN7bd_d0oO9G29Dis7L7Q8ya_cXQ8JaCdTFOV08qdgeuxsId0iP1f91IQ7M02IpkzUAuuj8q3-boB-ZjG7_AMd0I6sphKhQ7y9Gcd25woytI9Y_929RE0krTcX25u11CyokFVe5qROpJKYMf9Y9vNR5vpeFeJD35pcCHH7oHDoDmE-JqU-l6Rd01Q6Tfxa1N0rzcnJnZFs-Ma3u8MYiqyHdSOS-wbjQ_wR4fBvTPSekUF083Q58lBhi-9PzsY37kGvVpZiDFH2vf50Idkbs4B13r8wq-lSg1zZi3b0Df5X4nEQgn48SEX7r9aXFxELzP21Iw97lZyBB1ucO0XoZLSsmxMxektBI?testcase_id=5401392685776896


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 5 by ClusterFuzz, Mar 23 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5401392685776896 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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