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Issue 906362 link

Starred by 1 user
Status: WontFix
Owner:
drott@chromium.org
Closed: Dec 1
Cc:
kkaluri@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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CHECK failure: current_slice->num_characters > run->num_characters_ in harfbuzz_shaper.cc

Project Member Reported by ClusterFuzz, Nov 17 
Detailed report: https://clusterfuzz.com/testcase?key=5180688279797760

Fuzzer: libFuzzer_blink_harfbuzz_shaper_fuzzer
Job Type: libfuzzer_chrome_asan_debug
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  current_slice->num_characters > run->num_characters_ in harfbuzz_shaper.cc
  blink::HarfBuzzShaper::CommitGlyphs
  blink::HarfBuzzShaper::ExtractShapeResults
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan_debug&range=603036:603037

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5180688279797760

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Nov 17

Components: Platform
Labels: Test-Predator-Auto-Components
Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.
Project Member

Comment 2 by ClusterFuzz, Nov 17

Cc: drott@chromium.org
Labels: ClusterFuzz-Auto-CC
Automatically adding ccs based on OWNERS file / target commit history.

If this is incorrect, please add ClusterFuzz-Wrong label.

Comment 3 by kkaluri@chromium.org, Nov 30

Cc: -drott@chromium.org kkaluri@chromium.org
Labels: M-72 Test-Predator-Wrong
Owner: drott@chromium.org
Status: Assigned (was: Untriaged)
Predator and CL could not provide any possible suspects.

Using Code Search for the file, "harfbuzz_shaper.cc" suspecting the below Cl might have caused this issue

Suspect CL: https://chromium.googlesource.com/chromium/src/+/31ccc10f9b93c2c5e9756d9f882f107c4f8dc0fa

drott@ -- Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

Thanks!
Project Member

Comment 4 by ClusterFuzz, Dec 1

Labels: -Reproducible Unreproducible
ClusterFuzz testcase 5180688279797760 appears to be flaky, updating reproducibility label.
Project Member

Comment 5 by ClusterFuzz, Dec 1

Status: WontFix (was: Assigned)
ClusterFuzz testcase 5180688279797760 is flaky and no longer crashes, so closing issue.

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