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Issue metadata

Status: Duplicate
Merged: issue 641330
Owner:
Closed: Sep 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Crash in sfntly::GlyphTable::Glyph::Glyph

Project Member Reported by ClusterFuzz, Sep 7 2016

Issue description

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5597387131453440

Fuzzer: libfuzzer_sfntly_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000000
Crash State:
  sfntly::GlyphTable::Glyph::Glyph
  sfntly::GlyphTable::CompositeGlyph::CompositeGlyph
  sfntly::GlyphTable::Glyph::GetGlyph
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan_debug&range=414176:414284

Minimized Testcase (0.81 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95lLJTWei_yHuoAAwgyoXo9nzBks_0v0qidD0gBAgQPtHgqJuYxmcvyyl02ZSEUlPC_CpjK09NGIszgZfhWB2ETjfOJUKFvEbGix38eLEQdfsXyDiTDY7D_lkrFJrOom2nGiPcj7xs2rzxlgIAzT1kCT-Id1A?testcase_id=5597387131453440

Issue manually filed by: mmoroz

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.
 
Cc: behara...@samsung.com
Owner: thestig@chromium.org
thestig@, assigning to you as an author of the fuzzer :)
Cc: -behara...@samsung.com mmoroz@chromium.org kcc@chromium.org aizatsky@chromium.org behdad@chromium.org
Components: Blink>Fonts
Please note that the crash has been found using a debug version. May be not a valid issue.
 Bug 641330 ?
Components: -Blink>Fonts Internals>Skia>PDF
Hm, stacktraces have similar frames, most likely the same bug.

Sorry for the wrong component.
Project Member

Comment 7 by ClusterFuzz, Sep 8 2016

ClusterFuzz has detected this issue as fixed in range 416997:417261.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5597387131453440

Fuzzer: libfuzzer_sfntly_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000000
Crash State:
  sfntly::GlyphTable::Glyph::Glyph
  sfntly::GlyphTable::CompositeGlyph::CompositeGlyph
  sfntly::GlyphTable::Glyph::GetGlyph
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan_debug&range=414176:414284
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_asan_debug&range=416997:417261

Minimized Testcase (0.81 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95lLJTWei_yHuoAAwgyoXo9nzBks_0v0qidD0gBAgQPtHgqJuYxmcvyyl02ZSEUlPC_CpjK09NGIszgZfhWB2ETjfOJUKFvEbGix38eLEQdfsXyDiTDY7D_lkrFJrOom2nGiPcj7xs2rzxlgIAzT1kCT-Id1A?testcase_id=5597387131453440

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 8 by ClusterFuzz, Sep 8 2016

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

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
Mergedinto: 641330
Status: Duplicate (was: Verified)
Duplicating so I don't get extra credits. ;)
Project Member

Comment 10 by sheriffbot@chromium.org, Nov 22 2016

Labels: -Restrict-View-EditIssue
Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

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