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Issue 763655 link

Starred by 1 user
Status: WontFix
Owner:
zmo@chromium.org
Closed: Oct 2017
Cc:
█ kbr@chromium.org
sugoi@chromium.org
dsinclair@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 1
Type: Bug



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Null-dereference in gpu::gles2::ProgramInfoManager::Program::GetUniformsiv

Project Member Reported by ClusterFuzz, Sep 9 2017 
Detailed report: https://clusterfuzz.com/testcase?key=5585735033028608

Fuzzer: inferno_twister_c
Job Type: windows_syzyasan_chrome
Platform Id: windows

Crash Type: Null-dereference
Crash Address: 0x00000007
Crash State:
  gpu::gles2::ProgramInfoManager::Program::GetUniformsiv
  gpu::gles2::ProgramInfoManager::GetActiveUniformsiv
  gpu::gles2::GLES2Implementation::GetActiveUniformsiv
  
Memory Tool: SYZYASAN

Regressed: https://clusterfuzz.com/revisions?job=windows_syzyasan_chrome&range=500372:500415

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5585735033028608

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for more information.

Comment 1 by msrchandra@chromium.org, Sep 11 2017

Components: Internals>GPU>Internals
Labels: Test-Predator-Wrong-CLs M-63 CF-NeedsTriage
Unable to provide possible suspect using Predator, Cl and Code Search.
Could some one please look into the issue.
Thank You.

Comment 2 by ericrk@chromium.org, Sep 15 2017

Cc: kbr@chromium.org zmo@chromium.org sugoi@chromium.org
Status: Available (was: Untriaged)
This appears to be a crash in ES3 code. Do we know whether clusterfuzz runs under swiftshader? If so, this may be fallout from enabling WebGL2 under swiftshader here:
https://chromium-review.googlesource.com/653499

If this is the case, it's likely that we exposed an existing bug in WebGL2/ES2 that clusterfuzz was unable to catch earlier.

zmo/kbr, can you take a look or reassign? Thanks!

Comment 3 by zmo@chromium.org, Sep 15 2017

Cc: -zmo@chromium.org
Owner: zmo@chromium.org
Status: Assigned (was: Available)
I'll take a look
Project Member

Comment 4 by ClusterFuzz, Oct 1 2017

Labels: Test-Predator-AutoComponents
Automatically applying components based on information from OWNERS files. If this seems incorrect, please apply the Test-Predator-Wrong-Components label.

Comment 5 by infe...@chromium.org, Oct 1 2017

Labels: -Test-Predator-AutoComponents
Project Member

Comment 6 by ClusterFuzz, Oct 18 2017

Status: WontFix (was: Assigned)
ClusterFuzz testcase 5585735033028608 is flaky and no longer crashes, so closing issue.

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

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