[issue38106] Race in PyThread_release_lock - can lead to memory corruption and deadlock

[Armin Rigo]

Armin Rigo <arigo at users.sourceforge.net> added the comment:

I may be wrong, but I believe that the bug requires using the C API (not just pure Python code).  This is because Python-level lock objects have their own lifetime, and should never be freed while another thread is in PyThread_release_lock() with them.

Nevertheless, the example shows that using this C API "correctly" is very hard.  Most direct users of the C API could run into the same problem in theory.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38106>
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