[SYCL] Fix race during image decompression #20124
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**Problem** There can be race during image decompression. Consider the case when one thread is reading the decompressed buffer while another thread modifies it. This can lead to invalid SPIRV errors emitted by IGC. **Proposed solution** Use `std::call_once` to ensure that only one thread does the decompression of an image.
AlexeySachkov
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AlexeySachkov
temporarily deployed
to
WindowsCILock
GitHub Actions
Inactive
AlexeySachkov
temporarily deployed
to
WindowsCILock
GitHub Actions
Inactive
uditagarwal97
approved these changes
Sep 18, 2025
That is a known |
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This is a cherry-pick of #19981
Problem
There can be race during image decompression. Consider the case when one thread is reading the decompressed buffer while another thread modifies it. This can lead to invalid SPIRV errors emitted by IGC.
Proposed solution
Use
std::call_onceto ensure that only one thread does the decompression of an image.