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Issue metadata

Status: Verified
Owner:
Closed: Oct 30
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 1
Type: Bug



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Null-dereference READ in v8::internal::ParserBase<class v8::internal::Parser>::ParseClassPropertyDefiniti

Project Member Reported by ClusterFuzz, Oct 27

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5760523482955776

Fuzzer: libFuzzer_javascript_parser_proto_fuzzer
Job Type: windows_libfuzzer_chrome_asan
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  v8::internal::ParserBase<class v8::internal::Parser>::ParseClassPropertyDefiniti
  v8::internal::ParserBase<class v8::internal::Parser>::ParseClassLiteral
  v8::internal::ParserBase<class v8::internal::Parser>::ParseClassDeclaration
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_libfuzzer_chrome_asan&range=603272:603296

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5760523482955776

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Oct 27

Components: Blink>JavaScript>Parser
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, Oct 27

Cc: verwa...@chromium.org
Labels: Test-Predator-Auto-CC
Automatically adding ccs based on suspected regression changelists:

[parser] Temporarily restore RETURN_IF_PARSE_ERROR guarding DCHECK by verwaest@chromium.org - https://chromium.googlesource.com/v8/v8/+/da024b5f94fae32f9371b185a2580a453c8e20ed

[parser] Remove RETURN_IF* part 10 by verwaest@chromium.org - https://chromium.googlesource.com/v8/v8/+/88c49eac28717322516c3baa01f828fa6e697531

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label.
Owner: verwa...@chromium.org
Status: Assigned (was: Untriaged)
Project Member

Comment 4 by ClusterFuzz, Oct 30

ClusterFuzz has detected this issue as fixed in range 603472:603478.

Detailed report: https://clusterfuzz.com/testcase?key=5760523482955776

Fuzzer: libFuzzer_javascript_parser_proto_fuzzer
Job Type: windows_libfuzzer_chrome_asan
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  v8::internal::ParserBase<class v8::internal::Parser>::ParseClassPropertyDefiniti
  v8::internal::ParserBase<class v8::internal::Parser>::ParseClassLiteral
  v8::internal::ParserBase<class v8::internal::Parser>::ParseClassDeclaration
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_libfuzzer_chrome_asan&range=603272:603296
Fixed: https://clusterfuzz.com/revisions?job=windows_libfuzzer_chrome_asan&range=603472:603478

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5760523482955776

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, Oct 30

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5760523482955776 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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