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Issue metadata

Status: Assigned
Owner:
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Direct-leak in spirv_cross::Compiler::build_function_control_flow_graphs_and_analyze

Project Member Reported by ClusterFuzz, Dec 2

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6370871817797632

Fuzzer: libFuzzer_dawn_spirv_cross_glsl_fast_fuzzer
Job Type: libfuzzer_chrome_asan
Platform Id: linux

Crash Type: Direct-leak
Crash Address: 
Crash State:
  spirv_cross::Compiler::build_function_control_flow_graphs_and_analyze
  spirv_cross::CompilerGLSL::compile
  GLSLFastFuzzTask
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_asan&range=607427:607452

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6370871817797632

Issue filed automatically.

See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reference.md for more information.
 
Project Member

Comment 1 by ClusterFuzz, Dec 2

Cc: kainino@chromium.org cwallez@chromium.org
Labels: ClusterFuzz-Auto-CC
Automatically adding ccs based on OWNERS file / target commit history.

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

Comment 2 by ClusterFuzz, Dec 2

Labels: Test-Predator-Auto-Owner
Owner: rharrison@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://dawn.googlesource.com/dawn/+/9854295ff60b96f9c96c2711c55d2562c080dae9 (Add fuzzers for SPIRV-Cross).

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.
Components: Internals>GPU>Dawn
When I run this locally at HEAD I get an unknown address read instead of a leak from ASAN. I am not sure if this issue is related to not having the validator ahead of the cross compiler, or is a 'real' issue in the cross compiler. Once we migrate to having the validator infront of the cross compiler I will rerun this test case.

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