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Issue metadata

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



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Null-dereference READ in v8::base::Relaxed_Load

Project Member Reported by ClusterFuzz, Nov 18 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6029843451084800

Fuzzer: libFuzzer_v8_fully_instrumented_fuzzer
Job Type: mac_libfuzzer_chrome_asan
Platform Id: mac

Crash Type: Null-dereference READ
Crash Address: 0x00000000001f
Crash State:
  v8::base::Relaxed_Load
  v8::internal::HashTableBase::Capacity
  v8::internal::HashTable<v8::internal::NumberDictionary, v8::internal::NumberDict
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_libfuzzer_chrome_asan&range=517628:517702

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6029843451084800

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Nov 18 2017

Components: Blink>JavaScript
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 18 2017

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

Reland^2 "[runtime] Slightly optimize creation of class literals." by ishell@chromium.org - https://chromium.googlesource.com/v8/v8/+/cc9e77abe8497578a967259f643dcfb12e134fdb

[runtime] Make layout descriptor helper safe for concurrent marking. by ulan@chromium.org - https://chromium.googlesource.com/v8/v8/+/61bf2cc69217a4e9c7a40bb74269508fa26c2062

If this is incorrect, please apply the Test-Predator-Wrong-CLs label.

Comment 3 by ishell@chromium.org, Nov 19 2017

Owner: ishell@chromium.org
Status: Assigned (was: Untriaged)

Comment 4 by mmoroz@chromium.org, Nov 19 2017

Cc: metzman@chromium.org
Project Member

Comment 5 by ClusterFuzz, Nov 20 2017

ClusterFuzz is analyzing your testcase. Developers can follow the progress at https://clusterfuzz.com/testcase?key=5292013166788608.
Project Member

Comment 6 by ClusterFuzz, Nov 23 2017

ClusterFuzz has detected this issue as fixed in range 518497:518550.

Detailed report: https://clusterfuzz.com/testcase?key=6029843451084800

Fuzzer: libFuzzer_v8_fully_instrumented_fuzzer
Job Type: mac_libfuzzer_chrome_asan
Platform Id: mac

Crash Type: Null-dereference READ
Crash Address: 0x00000000001f
Crash State:
  v8::base::Relaxed_Load
  v8::internal::HashTableBase::Capacity
  v8::internal::HashTable<v8::internal::NumberDictionary, v8::internal::NumberDict
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_libfuzzer_chrome_asan&range=517628:517702
Fixed: https://clusterfuzz.com/revisions?job=mac_libfuzzer_chrome_asan&range=518497:518550

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6029843451084800

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 7 by ClusterFuzz, Nov 23 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6029843451084800 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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