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Issue metadata

Status: Verified
Owner: ----
Closed: Nov 29
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in v8::internal::interpreter::BytecodeGenerator::VisitAssignment

Project Member Reported by ClusterFuzz, Nov 28

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5118376407728128

Fuzzer: mbarbella_js_mutation
Job Type: linux_msan_d8
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000008
Crash State:
  v8::internal::interpreter::BytecodeGenerator::VisitAssignment
  v8::internal::interpreter::BytecodeGenerator::VisitForEffect
  v8::internal::interpreter::BytecodeGenerator::VisitBlockDeclarationsAndStatement
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_d8&range=57880:57881

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5118376407728128

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Nov 29

ClusterFuzz has detected this issue as fixed in range 57891:57892.

Detailed report: https://clusterfuzz.com/testcase?key=5118376407728128

Fuzzer: mbarbella_js_mutation
Job Type: linux_msan_d8
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000008
Crash State:
  v8::internal::interpreter::BytecodeGenerator::VisitAssignment
  v8::internal::interpreter::BytecodeGenerator::VisitForEffect
  v8::internal::interpreter::BytecodeGenerator::VisitBlockDeclarationsAndStatement
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_d8&range=57880:57881
Fixed: https://clusterfuzz.com/revisions?job=linux_msan_d8&range=57891:57892

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5118376407728128

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 2 by ClusterFuzz, Nov 29

Labels: ClusterFuzz-Verified
Status: Verified (was: Untriaged)
ClusterFuzz testcase 5118376407728128 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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