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Issue metadata

Status: Verified
Owner:
Closed: Feb 2018
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug

Blocked on:
issue 813590



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Null-dereference READ in v8::internal::ElementsAccessorBase<v8::internal::FastHoleyObjectElementsAccessor

Project Member Reported by ClusterFuzz, Feb 19 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5115035081506816

Fuzzer: v8_builtins_generator
Job Type: linux_cfi_d8
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000007
Crash State:
  v8::internal::ElementsAccessorBase<v8::internal::FastHoleyObjectElementsAccessor
  v8::internal::LookupIterator::State v8::internal::LookupIterator::LookupInRegula
  void v8::internal::LookupIterator::NextInternal<true>
  
Sanitizer: cfi (CFI)

Regressed: https://clusterfuzz.com/revisions?job=linux_cfi_d8&range=51355:51356

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5115035081506816

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Feb 19 2018

Labels: Test-Predator-Auto-Owner
Owner: gab@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/v8/v8/+/e9750cb80653827a0c685fe65b9572315fe1d4e4 (Preempt ConcurrentMarking tasks instead of merely pausing in PauseScope.).

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.

Comment 2 by gab@chromium.org, Feb 20 2018

Blockedon: 813590
Project Member

Comment 3 by ClusterFuzz, Feb 20 2018

ClusterFuzz has detected this issue as fixed in range 51362:51363.

Detailed report: https://clusterfuzz.com/testcase?key=5115035081506816

Fuzzer: v8_builtins_generator
Job Type: linux_cfi_d8
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000007
Crash State:
  v8::internal::ElementsAccessorBase<v8::internal::FastHoleyObjectElementsAccessor
  v8::internal::LookupIterator::State v8::internal::LookupIterator::LookupInRegula
  void v8::internal::LookupIterator::NextInternal<true>
  
Sanitizer: cfi (CFI)

Regressed: https://clusterfuzz.com/revisions?job=linux_cfi_d8&range=51355:51356
Fixed: https://clusterfuzz.com/revisions?job=linux_cfi_d8&range=51362:51363

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5115035081506816

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, Feb 20 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5115035081506816 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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