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Issue metadata

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



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Null-dereference READ in v8::internal::MarkCompactCollector::RootMarkingVisitor::VisitRootPointers

Project Member Reported by ClusterFuzz, Jun 8 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5224537709608960

Fuzzer: mbarbella_js_mutation
Job Type: linux_msan_d8
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  v8::internal::MarkCompactCollector::RootMarkingVisitor::VisitRootPointers
  v8::internal::WasmCompileLazyFrame::Iterate
  v8::internal::Isolate::Iterate
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_d8&range=53514:53515

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5224537709608960

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jun 8 2018

Components: Blink>JavaScript>GC
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, Jun 8 2018

Labels: Test-Predator-Auto-Owner
Owner: mythria@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/v8/v8/+/9461aa561986b93d228f603faf3745ab36cfd5dd ([Interpreter] Enable sharing of load / store named property feedback).

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.
Project Member

Comment 3 by ClusterFuzz, Jun 8 2018

Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/v8/v8/+/9461aa561986b93d228f603faf3745ab36cfd5dd ([Interpreter] Enable sharing of load / store named property feedback).

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.
I cannot reproduce this problem locally with the msan build. There is an infinite loop in the test case, so when I try it just goes into an infinite loop and I killed it after some time (~10min). If I remove the infinite loop then it works fine. I am re-running the task to see if it is reproducible on the bots. 

Also, looking at the stack trace it doesn't seem related to bytecode-generator.
Project Member

Comment 5 by ClusterFuzz, Jun 11 2018

ClusterFuzz has detected this issue as fixed in range 53595:53596.

Detailed report: https://clusterfuzz.com/testcase?key=5224537709608960

Fuzzer: mbarbella_js_mutation
Job Type: linux_msan_d8
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  v8::internal::MarkCompactCollector::RootMarkingVisitor::VisitRootPointers
  v8::internal::WasmCompileLazyFrame::Iterate
  v8::internal::Isolate::Iterate
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_msan_d8&range=53514:53515
Fixed: https://clusterfuzz.com/revisions?job=linux_msan_d8&range=53595:53596

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5224537709608960

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 6 by ClusterFuzz, Jun 11 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5224537709608960 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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