[3.14] gh-144446: Fix some frame object thread-safety issues (gh-144479) #144546
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…-144479) 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 (cherry picked from commit 5bb3bbb) Co-authored-by: Sam Gross <colesbury@gmail.com>
This was referenced Feb 6, 2026
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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
(cherry picked from commit 5bb3bbb)
Co-authored-by: Sam Gross colesbury@gmail.com