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Issue metadata

Status: Verified
Owner:
Closed: Nov 2017
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 1
Type: Bug



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Null-dereference READ in v8::internal::compiler::BitsetType::Lub

Project Member Reported by ClusterFuzz, Nov 13 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5877364260339712

Fuzzer: ochang_js_fuzzer_win
Job Type: windows_asan_d8
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x00000000
Crash State:
  v8::internal::compiler::BitsetType::Lub
  v8::internal::compiler::Type::SlowIs
  v8::internal::compiler::RepresentationSelector::VisitSpeculativeIntegerAdditiveO
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_d8&range=49327:49328

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5877364260339712

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for more information.
 
Project Member

Comment 1 by ClusterFuzz, Nov 14 2017

Components: Blink>JavaScript>Compiler
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 14 2017

Labels: Test-Predator-Auto-Owner
Owner: mvstan...@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/v8/v8/+/f010b28fbe3d117519720aa94ca9e56d3b913d1b ([TurboFan] Diagnostic code to track down bug in representation selection).

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.
Project Member

Comment 3 by ClusterFuzz, Nov 15 2017

ClusterFuzz has detected this issue as fixed in range 49346:49347.

Detailed report: https://clusterfuzz.com/testcase?key=5877364260339712

Fuzzer: ochang_js_fuzzer_win
Job Type: windows_asan_d8
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x00000000
Crash State:
  v8::internal::compiler::BitsetType::Lub
  v8::internal::compiler::Type::SlowIs
  v8::internal::compiler::RepresentationSelector::VisitSpeculativeIntegerAdditiveO
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_d8&range=49327:49328
Fixed: https://clusterfuzz.com/revisions?job=windows_asan_d8&range=49346:49347

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5877364260339712

See https://github.com/google/clusterfuzz-tools 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 4 by ClusterFuzz, Nov 15 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5877364260339712 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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