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Issue 899476 link

Starred by 1 user
Status: Assigned
Owner:
pwang@chromium.org
Cc:
zachr@google.com
marcheu@google.com
davidriley@google.com
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 2
Type: Bug



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Undefined-shift in vrend_create_shader

Project Member Reported by ClusterFuzz, Oct 27 
Detailed report: https://clusterfuzz.com/testcase?key=6650307059384320

Fuzzer: libFuzzer_chromeos_virgl_fuzzer
Job Type: libfuzzer_ubsan_chromeos
Platform Id: linux

Crash Type: Undefined-shift
Crash Address: 
Crash State:
  vrend_create_shader
  vrend_decode_block
  virgl_fuzzer.c
  
Sanitizer: undefined (UBSAN)

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6650307059384320

Issue filed automatically.

See https://chromium.googlesource.com/chromiumos/docs/+/master/fuzzing.md#Reproducing-crashes-from-ClusterFuzz for more information.
Project Member

Comment 1 by ClusterFuzz, Oct 27

Cc: davidriley@google.com marcheu@google.com zachr@google.com
Labels: ClusterFuzz-Auto-CC
Automatically adding ccs based on OWNERS file / target commit history.

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

Comment 2 by manojgupta@chromium.org, Nov 20

Owner: pwang@chromium.org
Status: Assigned (was: Untriaged)

Comment 3 by manojgupta@chromium.org, Nov 28 

Ping pwang@

Comment 4 by pwang@chromium.org, Nov 28 

Waiting for upstream.

Comment 5 by osh...@chromium.org, Nov 30

Components: UI>GFX
Project Member

Comment 6 by ClusterFuzz, Dec 1

Labels: -Reproducible Unreproducible
ClusterFuzz testcase 6650307059384320 appears to be flaky, updating reproducibility label.

Comment 7 by infe...@chromium.org, Dec 1

Labels: -Unreproducible Reproducible
Please ignore the last comment about testcase being unreproducible. The testcase is still reproducible. This happened due to a code refactoring on ClusterFuzz side, and the underlying root cause is now fixed. Resetting the label back to Reproducible. Sorry about the inconvenience caused from these incorrect notifications.
Project Member

Comment 8 by ClusterFuzz, Dec 4

Labels: -Reproducible Unreproducible
ClusterFuzz testcase 6650307059384320 appears to be flaky, updating reproducibility label.

Comment 9 by metzman@chromium.org, Dec 4

Labels: -Unreproducible Reproducible
Please ignore the last comment about testcase being unreproducible. 
The testcase is still reproducible. 
This was caused by a bug in ClusterFuzz that has been fixed. 
Sorry again for the inconvenience.
►

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