Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/v8/v8/+/d69b2df947241f12cc92530c7a0bf9556ce76d7b ([wasm] Add code printing for native wasm code).

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

The following revision refers to this bug:
  https://chromium.googlesource.com/v8/v8.git/+/453d60b1e90f96269935882755939ec6584eeca3

commit 453d60b1e90f96269935882755939ec6584eeca3
Author: Clemens Hammacher <clemensh@chromium.org>
Date: Tue Jan 09 14:11:13 2018

[wasm] Fix code printing for off-the-heap code

We were trying to disassemble the whole body of a function, including
safepoints and the constant pool. This lead to DCHECK errors on mips.
This CL fixes that, and adds printing of source positions.
It also fixes the output of instructions size to only contain the
instructions for both on-the-heap and off-the-heap code.

R=titzer@chromium.org

Bug:  chromium:800233 
Change-Id: Idb15a779680af7997eb78aea2a329189b684d53e
Reviewed-on: https://chromium-review.googlesource.com/856458
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50444}
[modify] https://crrev.com/453d60b1e90f96269935882755939ec6584eeca3/src/compiler/wasm-compiler.cc
[modify] https://crrev.com/453d60b1e90f96269935882755939ec6584eeca3/src/objects.cc
[modify] https://crrev.com/453d60b1e90f96269935882755939ec6584eeca3/src/wasm/wasm-code-manager.cc
[modify] https://crrev.com/453d60b1e90f96269935882755939ec6584eeca3/src/wasm/wasm-code-manager.h

ClusterFuzz has detected this issue as fixed in range 50443:50444.

Detailed report: https://clusterfuzz.com/testcase?key=5037455974858752

Fuzzer: ochang_js_fuzzer
Job Type: linux_asan_d8_v8_mipsel_dbg
Platform Id: linux

Crash Type: Ill
Crash Address: 0xf2b5b83e
Crash State:
  v8::internal::Decoder::DecodeTypeImmediate
  v8::internal::Decoder::InstructionDecode
  disasm::Disassembler::InstructionDecode
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_d8_v8_mipsel_dbg&range=50165:50166
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_d8_v8_mipsel_dbg&range=50443:50444

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5037455974858752

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.

ClusterFuzz testcase 5037455974858752 is verified as fixed, so closing issue as verified.

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