This issue is a security regression. If you are not able to fix this quickly, please revert the change that introduced it.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Once again, the regression range doesn't have any V8 CLs so I'm not sure how to find the right owner. Please help triaging this. Thanks.

ClusterFuzz has detected this issue as fixed in range 454791:454794.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6619034553679872

Fuzzer: libfuzzer_v8_wasm_compile_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Use-of-uninitialized-value
Crash Address: 
Crash State:
  v8::internal::compiler::JSGraph::Float32Constant
  v8::internal::wasm::WasmFullDecoder::DecodeFunctionBody
  v8::internal::wasm::WasmFullDecoder::Decode
  
Sanitizer: memory (MSAN)

Recommended Security Severity: Medium

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=453545:453564
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_msan&range=454791:454794

Reproducer Testcase: https://cluster-fuzz.appspot.com/download/AMIfv96pr9a30FHld8_N9YLB7Oy75fzC0Aq9ZXt80NHxmsItj-9EV-dWVhI6pZUVcdM5UIok3ugjJ6_KTro1sLUE3ChfS2L8tjEcCNnTTNyYdDdPxqLl03wBMH2uCz6b_FUKFA6mW8D5mIZ4tVVdAGyH3o8JkJZ8Ihd87UG93W23iUD6GYe2rDtPCOcTy6JE2qA4I5rnxG_hI_2kF2hjWyoST40A7Hb1ChXTQ96KGULGvK3psVqdadq5trfkOX4Q3CT9_2B5Tdt20rj_NRB_rkNR4icOwD3AVnWSqcnHWRwu0NL7lhcdjyaS31ddLHpqUPRzjvJncKWbLzxg9_X9XxVzgy-80rnNnuKhhv2BzNp2UJgOdaH4Hdw?testcase_id=6619034553679872


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

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

ClusterFuzz testcase 6619034553679872 is verified as fixed, so closing issue.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

This bug has been closed for more than 14 weeks. Removing security view restrictions.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot