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[3.12] gh-104690 Disallow thread creation and fork at interpreter finalization (GH-104826) (#105277)

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gh-104690 Disallow thread creation and fork at interpreter finalization (GH-104826)

Disallow thread creation and fork at interpreter finalization.

in the following functions, check if interpreter is finalizing and raise `RuntimeError` with appropriate message:
* `_thread.start_new_thread` and thus `threading`
* `posix.fork`
* `posix.fork1`
* `posix.forkpty`
* `_posixsubprocess.fork_exec` when a `preexec_fn=` is supplied.

---------

(cherry picked from commit ce558e69d4)

Co-authored-by: chgnrdv <52372310+chgnrdv@users.noreply.github.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
This commit is contained in:
Miss Islington (bot) 2023-06-03 21:32:00 -07:00 • committed by GitHub
parent f629d5fc24
commit c7a9d96a25
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8 changed files with 97 additions and 30 deletions
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5
Modules/_threadmodule.c
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@ -1155,6 +1155,11 @@ thread_PyThread_start_new_thread(PyObject *self, PyObject *fargs)
"thread is not supported for isolated subinterpreters");
return NULL;
}
if (interp->finalizing) {
PyErr_SetString(PyExc_RuntimeError,
"can't create new thread at interpreter shutdown");
return NULL;
}
struct bootstate *boot = PyMem_NEW(struct bootstate, 1);
if (boot == NULL) {