ClusterFuzz has detected this issue as fixed in range 443818:443834.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5551180676857856

Fuzzer: libfuzzer_v8_wasm_code_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  Disposing the isolate that is entered by a thread in wasm-code.cc
  
Sanitizer: undefined (UBSAN)

Regressed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=435634:435703
Fixed: https://cluster-fuzz.appspot.com/revisions?job=libfuzzer_chrome_ubsan&range=443818:443834

Minimized Testcase (0.01 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95EOWki9FXI4ei3SwuwPhfgqD652Pz6Wk2I50o73ajB2uUSdNr5Ui1qtP3XQD3M3vr-a4tCLtZtlc_1Z5BCnoAFIB-yxpF9GnfUBhGU6ih7bOG2tblFlmPUa7PmhbAm27qaLLF_N3hpOH9cKsKWwQs72p9r0FM6y9YtxQqzWsECP-udxufOaymmK1h8hYvxSXPgMQulE7DAyi7awQhh5222HBHFCDTK9dhdrsNvlWB-pI8zzY1bkWsBFhpetUrWlgSGXgk8htuge0eC0dTUcZSkRQGY-0dK09QP_eEQO3zluakZJMlbjtd6uOYTC8NhOs2EBMMMf4mDaT-QvqniTSkSvIhaUySjNxYAOuVgWeUKpBCViwI?testcase_id=5551180676857856

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 5551180676857856 is verified as fixed, so closing issue.

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

The following revision refers to this bug:
  https://chromium.googlesource.com/v8/v8.git/+/fec614151a3f5aad0a6d44d7eafc38e8f3a006c2

commit fec614151a3f5aad0a6d44d7eafc38e8f3a006c2
Author: ahaas <ahaas@chromium.org>
Date: Mon Jan 16 10:43:03 2017

[wasm] Remove special treatment of F(32|64)Sub in the interpreter.

The special treatment is not required anymore because the wasm spec
changed and NaNs do not have to be preserved anymore. In addition, it
may introduce non-determinism which confused the fuzzers.

R=titzer@chromium.org
BUG= chromium:681033 

Review-Url: https://codereview.chromium.org/2630293002
Cr-Commit-Position: refs/heads/master@{#42359}

[modify] https://crrev.com/fec614151a3f5aad0a6d44d7eafc38e8f3a006c2/src/wasm/wasm-interpreter.cc