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Issue metadata

Status: Verified
Owner:
Closed: Jan 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 3
Type: Bug



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Undefined-shift in FcCharSetHasChar

Project Member Reported by ClusterFuzz, Dec 24 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4505280737181696

Fuzzer: libFuzzer_renderer_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Undefined-shift
Crash Address: 
Crash State:
  FcCharSetHasChar
  gfx::CachedFont::HasGlyphForCharacter
  gfx::CachedFontSet::GetFallbackFontForChar
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=524386:524393

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4505280737181696

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
 
Cc: kkaluri@chromium.org
Components: Blink>Fonts
Labels: M-65 Test-Predator-Wrong CF-NeedsTriage
Unable to provide possible suspect using Predator, CL and Code Search.
Could someone please look into the issue.

Thank You...

Comment 2 by e...@chromium.org, Jan 4 2018

Cc: drott@chromium.org
Labels: -Pri-2 Pri-3
Status: Available (was: Untriaged)

Comment 3 by drott@chromium.org, Jan 9 2018

Cc: -drott@chromium.org npm@chromium.org
Owner: drott@chromium.org
Status: Assigned (was: Available)
Project Member

Comment 4 by ClusterFuzz, Jan 20 2018

ClusterFuzz has detected this issue as fixed in range 530538:530562.

Detailed report: https://clusterfuzz.com/testcase?key=4505280737181696

Fuzzer: libFuzzer_renderer_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Undefined-shift
Crash Address: 
Crash State:
  FcCharSetHasChar
  gfx::CachedFont::HasGlyphForCharacter
  gfx::CachedFontSet::GetFallbackFontForChar
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=524386:524393
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=530538:530562

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4505280737181696

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, Jan 20 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 4505280737181696 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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