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Issue 917989 link

Starred by 2 users
Status: Assigned
Owner:
rharrison@chromium.org
Cc:
cwallez@chromium.org
kainino@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in spirv_cross::Compiler::CombinedImageSamplerUsageHandler::begin_function_scope

Project Member Reported by ClusterFuzz, Dec 27 
Detailed report: https://clusterfuzz.com/testcase?key=5094807466409984

Fuzzer: libFuzzer_dawn_spirv_cross_msl_fast_fuzzer
Fuzz target binary: dawn_spirv_cross_msl_fast_fuzzer
Job Type: libfuzzer_chrome_ubsan
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000004
Crash State:
  spirv_cross::Compiler::CombinedImageSamplerUsageHandler::begin_function_scope
  spirv_cross::Compiler::traverse_all_reachable_opcodes
  spirv_cross::Compiler::traverse_all_reachable_opcodes
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_ubsan&range=609741:609751

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5094807466409984

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for instructions to reproduce this bug locally.
Project Member

Comment 1 by ClusterFuzz, Dec 27

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 27

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/+/fbeca676d409ec19572e3299288f4010c2ee8fd5 (Tighten when signal trap is used in SPIRV-Cross fuzzers).

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.

Comment 3 by rharrison@chromium.org, Today (11 hours ago)

Components: Internals>GPU>Dawn
►

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