Automatically adding ccs based on OWNERS file / target commit history.

If this is incorrect, please add ClusterFuzz-Wrong label.

Automatically assigning owner based on suspected regression changelist https://dawn.googlesource.com/dawn/+/679ff4ea86547939ac56106933dcb1a866c9a665 (Validate that mapped buffers aren't used in submits.).

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.

The following revision refers to this bug:
  https://dawn.googlesource.com/dawn/+/d8c1a48fc4663c92690f2649a7eee01b549d6fc9

commit d8c1a48fc4663c92690f2649a7eee01b549d6fc9
Author: Corentin Wallez <cwallez@chromium.org>
Date: Wed Nov 28 17:00:33 2018

WireCmd: require opt-in to treat ID 0 as nullptr instead of error.

In preparation for the descriptorization of BindGroup, support was added
to treat wire ID 0 as nullptr for a bunch of objects. Now that we have a
fuzzer for the wire+frontend, we need to validate when we have a 0 id.
Either the wire needs to reject the ID or the frontend needs to validate
against nullptrs. Since only few entrypoints will have a use for
nullptrs (bind groups, render pass resolve textures), we require an
opt-in in the JSON file for a structure member or an argument to be
optional.

This disables the tests related to ID 0 = nullptr, because we don't yet
have optional argument/members in dawn.json.

BUG= chromium:905273 
BUG= chromium:906418 
BUG= chromium:908678 

Change-Id: If9a3c4857db43ca26a90abff2437e1cebb0ab79b
Reviewed-on: https://dawn-review.googlesource.com/c/2704
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Stephen White <senorblanco@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

[modify] https://crrev.com/d8c1a48fc4663c92690f2649a7eee01b549d6fc9/generator/main.py
[modify] https://crrev.com/d8c1a48fc4663c92690f2649a7eee01b549d6fc9/generator/templates/dawn_wire/WireServer.cpp
[modify] https://crrev.com/d8c1a48fc4663c92690f2649a7eee01b549d6fc9/generator/templates/dawn_wire/WireClient.cpp
[modify] https://crrev.com/d8c1a48fc4663c92690f2649a7eee01b549d6fc9/generator/templates/dawn_wire/WireCmd.cpp
[modify] https://crrev.com/d8c1a48fc4663c92690f2649a7eee01b549d6fc9/generator/templates/dawn_wire/WireCmd.h
[modify] https://crrev.com/d8c1a48fc4663c92690f2649a7eee01b549d6fc9/src/tests/unittests/WireTests.cpp

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9be2595aa9057fdfffd1fea251d7ab132ac510aa

commit 9be2595aa9057fdfffd1fea251d7ab132ac510aa
Author: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Date: Wed Nov 28 22:42:57 2018

Roll src/third_party/dawn 596d6fe00db7..ac71e34d4ad1 (4 commits)

https://dawn.googlesource.com/dawn.git/+log/596d6fe00db7..ac71e34d4ad1


git log 596d6fe00db7..ac71e34d4ad1 --date=short --no-merges --format='%ad %ae %s'
2018-11-28 brandon1.jones@intel.com Change Copy Operation Interfaces to Match WebGPU IDL
2018-11-28 enga@chromium.org Factor SerialQueue into SerialQueue and SerialMap
2018-11-28 cwallez@chromium.org WireCmd: require opt-in to treat ID 0 as nullptr instead of error.
2018-11-28 cwallez@chromium.org Roll SPIRV-Tools and temporarily use Vulkan SPIRV validation


Created with:
  gclient setdep -r src/third_party/dawn@ac71e34d4ad1

The AutoRoll server is located here: https://autoroll.skia.org/r/dawn-chromium-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

CQ_INCLUDE_TRYBOTS=luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel

BUG= chromium:905273 , chromium:906418 , chromium:908678 
TBR=cwallez@chromium.org

Change-Id: I4979c5123a026fa468c660f45dce4fcf4f1903ae
Reviewed-on: https://chromium-review.googlesource.com/c/1354240
Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#611909}
[modify] https://crrev.com/9be2595aa9057fdfffd1fea251d7ab132ac510aa/DEPS

ClusterFuzz has detected this issue as fixed in range 611899:611910.

Detailed report: https://clusterfuzz.com/testcase?key=5145003988615168

Fuzzer: libFuzzer_dawn_wire_server_and_frontend_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x00000000001c
Crash State:
  dawn_native::TextureBase::GetFormat
  dawn_native::ComputeDefaultRowPitch
  dawn_native::CommandBufferBuilder::CopyTextureToBuffer
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=607423:607447
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=611899:611910

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5145003988615168

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.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 5145003988615168 is verified as fixed, so closing issue as verified.

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