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gh-144446: Fix some frame object thread-safety issues#144479
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Fix thread-safety issues when accessing frame attributes while anotherthread is executing the frame:- Add critical section to frame_repr() to prevent races when accessing the frame's code object and line number- Add _Py_NO_SANITIZE_THREAD to PyUnstable_InterpreterFrame_GetLasti() to allow intentional racy reads of instr_ptr.- Fix take_ownership() to not write to the original frame's f_executable
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colesbury commentedFeb 4, 2026
There are still some races when accessing variables through frame.f_locals, which will be address separately. |
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Fix thread-safety issues when accessing frame attributes while another thread is executing the frame:
Add critical section to frame_repr() to prevent races when accessing the frame's code object and line number
Add _Py_NO_SANITIZE_THREAD to PyUnstable_InterpreterFrame_GetLasti() to allow intentional racy reads of instr_ptr.
Fix take_ownership() to not write to the original frame's f_executable