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Issue 871110 link

Starred by 2 users
Status: Assigned
Owner:
█ aseemgarg@chromium.org
Last visit > 30 days ago
Cc:
gdeepti@chromium.org
adamk@chromium.org
titzer@chromium.org
dschuff@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Null-dereference READ in v8::internal::compiler::Verifier::Visitor::Check

Project Member Reported by ClusterFuzz, Aug 6 
Detailed report: https://clusterfuzz.com/testcase?key=5513210657243136

Fuzzer: binaryen_wasm_fuzzer
Job Type: linux_asan_d8_v8_arm_dbg
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x00000000
Crash State:
  v8::internal::compiler::Verifier::Visitor::Check
  v8::internal::compiler::Verifier::Run
  void v8::internal::compiler::PipelineImpl::Run<v8::internal::compiler::VerifyGra
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_d8_v8_arm_dbg&range=54851:54852

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5513210657243136

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Aug 6

Components: Blink>JavaScript>Compiler
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, Aug 6

Labels: Test-Predator-Auto-Owner
Owner: gdeepti@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/v8/v8/+/8301530dbbcaebb66a6cee3038424840bb5269e8 (Add I64Atomic {Exchg, CmpExchg} operations for ia32).

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 3 by gdeepti@chromium.org, Sep 20

Cc: gdeepti@chromium.org
Components: -Blink>JavaScript -Blink>JavaScript>Compiler Blink>JavaScript>WebAssembly
Owner: aseemgarg@chromium.org
The test case for this issue no longer crashes, it's a compiler error for unimplemented opcode, 0xFe00 (atomic wake). Assigning to aseemgarg@ to verify after implementation is complete.

Comment 4 by aseemgarg@chromium.org, Sep 20 

Lowering priority as the implementation of atomic wake is not P1 either.

Comment 5 by aseemgarg@chromium.org, Sep 20

Labels: -Pri-1 Pri-2
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