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Issue metadata

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



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Null-dereference READ in return_count

Project Member Reported by ClusterFuzz, Oct 16 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6324780440748032

Fuzzer: ochang_js_fuzzer
Job Type: linux_asan_d8_dbg
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  return_count
  v8::internal::wasm::SignatureMap::CompareFunctionSigs::operator
  v8::internal::wasm::SignatureMap::FindOrInsert
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_d8_dbg&range=48588:48589

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6324780440748032

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Oct 17 2017

Components: Blink>JavaScript>WebAssembly
Labels: Test-Predator-AutoComponents
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 17 2017

Labels: Test-Predator-AutoOwner
Owner: titzer@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/v8/v8/+/829670e16ab9761dc03d613e07d3e27385b7ab46 ([wasm] Canonicalize signatures per module at module decode time.).

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.
Project Member

Comment 3 by ClusterFuzz, Oct 21 2017

ClusterFuzz has detected this issue as fixed in range 48792:48793.

Detailed report: https://clusterfuzz.com/testcase?key=6324780440748032

Fuzzer: ochang_js_fuzzer
Job Type: linux_asan_d8_dbg
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  return_count
  v8::internal::wasm::SignatureMap::CompareFunctionSigs::operator
  v8::internal::wasm::SignatureMap::FindOrInsert
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_d8_dbg&range=48588:48589
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_d8_dbg&range=48792:48793

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6324780440748032

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, Oct 21 2017

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6324780440748032 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.
Labels: -Test-Predator-AutoComponents Test-Predator-Auto-Components
Labels: -Test-Predator-AutoOwner Test-Predator-Auto-Owner

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