Looks like an asm.js issue. Regression range and minimized version not yet ready (ClusterFuzz still churning).

WIP: https://codereview.chromium.org/2268363002/

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5490620452044800

Fuzzer: mbarbella_js_mutation
Job Type: linux_asan_d8_v8_arm_dbg
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  target_info->type() != AsmType::None() in asm-typer.cc
  
Regressed: V8: r37728:37729

Minimized Testcase (40.70 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95SndnuDpQ86sGpqmmU2HqBATP7ojV561XkssU1ndULOcOUlOQgPSQenKx6Hgyh9S9YbVk5_2_GmOpr6gIUMESwd301n4Df5xpjyiXaV4y5qmoobG49UO1ie7Kgz1L3ubCPZmulTm4sXpPkEMTFbj3fyaajKgfMMBcCfh2QoRH-z4NOnDE?testcase_id=5490620452044800

Issue manually filed by: mstarzinger

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

The following revision refers to this bug:
  https://chromium.googlesource.com/v8/v8.git/+/a60e1822504f1c87fd067b150354ccb544823bc3

commit a60e1822504f1c87fd067b150354ccb544823bc3
Author: jpp <jpp@chromium.org>
Date: Tue Aug 23 18:08:14 2016

[Asm.js] Prevents assignments to immutables.

Adds a check so that module validation fails if there are any
assignments to immutable identifiers (e.g., module name, module
parameters, stdlib imports.)

BUG= https://bugs.chromium.org/p/chromium/issues/detail?id=640194

Review-Url: https://codereview.chromium.org/2268363002
Cr-Commit-Position: refs/heads/master@{#38838}

[modify] https://crrev.com/a60e1822504f1c87fd067b150354ccb544823bc3/src/asmjs/asm-typer.cc
[modify] https://crrev.com/a60e1822504f1c87fd067b150354ccb544823bc3/test/cctest/asmjs/test-asm-typer.cc

ClusterFuzz has detected this issue as fixed in range 38837:38838.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5490620452044800

Fuzzer: mbarbella_js_mutation
Job Type: linux_asan_d8_v8_arm_dbg
Platform Id: linux

Crash Type: CHECK failure
Crash Address: 
Crash State:
  target_info->type() != AsmType::None() in asm-typer.cc
  
Regressed: V8: r37728:37729
Fixed: V8: r38837:38838

Minimized Testcase (40.70 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95SndnuDpQ86sGpqmmU2HqBATP7ojV561XkssU1ndULOcOUlOQgPSQenKx6Hgyh9S9YbVk5_2_GmOpr6gIUMESwd301n4Df5xpjyiXaV4y5qmoobG49UO1ie7Kgz1L3ubCPZmulTm4sXpPkEMTFbj3fyaajKgfMMBcCfh2QoRH-z4NOnDE?testcase_id=5490620452044800

See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs 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 is verified as fixed, closing issue.

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

Removing EditIssue view restrictions from ClusterFuzz filed bugs. If you believe that this issue should still be restricted, please reapply the label.

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