oneapi-src / oneapi-src/level-zero-tests
Data race in level_zero_tests::get_default_context()
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- Dominant language
- C++
- Stars
- 64
- Forks
- 69
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Description
Dear colleagues,
There is a data race between ze_context_handle_t::context checking and its initialization in level_zero_tests::get_default_context(). The context may be unsuccessfully checked in the condition by several threads and then assigned simultaneously as well. Multithread initialization is expected in for example, zeImmediateCommandListMultiTthreadTest::GivenMultipleThreadsWhenCreateCloseAndDestroyImmediateCommandListsThenReturnSuccess.
Same issue affects the code below.
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Research direction
Start in utils/utils/src/utils.cpp at the condition around line 23 and assignment around line 29 in level_zero_tests::get_default_context(). Run zeImmediateCommandListMultiTthreadTest::GivenMultipleThreadsWhenCreateCloseAndDestroyImmediateCommandListsThenReturnSuccess and use a race detector to examine the initialization path. Done means the concurrent test no longer reports a data race.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- testing-qa
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100