[ICM CXX] Address Pad kernel shortcomings#26864
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yuslepukhin merged 29 commits intomainfrom Jan 8, 2026
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This reverts commit 96a6045.
…expected. [ FAILED ] PadOpTest/0.Pad_Constant_DimWithZeroInput, where TypeParam = float [ FAILED ] PadOpTest/1.Pad_Constant_DimWithZeroInput, where TypeParam = double
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Pull request overview
This PR addresses shortcomings in the Pad kernel implementation across CPU and CUDA providers, with a focus on improving robustness, safety, and edge case handling for padding operations.
Key Changes:
- Enhanced integer overflow protection using SafeInt throughout CPU and CUDA Pad implementations
- Added validation for edge cases including zero-extent dimensions and reflect mode constraints
- Introduced new comprehensive test cases for edge conditions, negative padding, and mixed-sign padding scenarios
Reviewed changes
Copilot reviewed 7 out of 8 changed files in this pull request and generated 12 comments.
Show a summary per file
| File | Description |
|---|---|
| onnxruntime/test/testdata/test_pad_rce.py | Python script to generate ONNX model for RCE (Remote Code Execution) testing with dynamic pad inputs |
| onnxruntime/test/testdata/test_pad_rce.onnx | Generated ONNX model artifact for pad RCE testing |
| onnxruntime/test/providers/cpu/tensor/pad_test.cc | Updated test exclusions for DML provider, added extensive new tests for edge cases, negative padding, and various pad modes |
| onnxruntime/core/providers/cuda/tensor/pad.h | Minor update with copyright header duplication issue |
| onnxruntime/core/providers/cuda/tensor/pad.cc | Enhanced type safety (int32_t→size_t), added SafeInt usage, improved edge case handling for zero extents and reflect mode |
| onnxruntime/core/providers/cuda/cuda_utils.cu | Added Fill template specialization for bool type |
| onnxruntime/core/providers/cpu/tensor/padbase.h | Added helper functions for flattening validation and element coverage checking |
| onnxruntime/core/providers/cpu/tensor/pad.cc | Introduced OutputSink debug wrapper, enhanced SafeInt usage, improved validation for zero extents and reflect mode, conditional flattening logic |
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yuslepukhin
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tianleiwu
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The code and comprehensive tests looks good.
OutputSink only checks boundary in debug build. Is there use case that need bounds check in release build?
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fs-eire
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tianleiwu
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### Description Address OOB reads and writes issues. ### Motivation and Context microsoft#11828 microsoft#13332 See also this: onnx/onnx#4294
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Description
Address OOB reads and writes issues.
Motivation and Context
#11828
#13332
See also this: onnx/onnx#4294