Segfault when trying to use PyRun_SimpleString() with some imports #124160
Description
Crash report
What happened?
I hit the segfault when doing the following thing:
$ docker run -ti fedora:41 bash
# dnf -y install gcc python-devel
# echo '#include <Python.h>
int main() {
Py_Initialize();
PyThreadState_Swap(Py_NewInterpreter());
PyRun_SimpleString("import readline");
}' > test.c
# gcc test.c -I/usr/include/python3.13 -lpython3.13
# ./a.out
Segmentation fault (core dumped)
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7a8c3cb in reload_singlephase_extension (tstate=tstate@entry=0x7ffff7e5a850, cached=cached@entry=0x0,
info=info@entry=0x7fffffff8c90) at /usr/src/debug/python3.13-3.13.0~rc2-1.fc41.x86_64/Python/import.c:1763
1763 PyModuleDef *def = cached->def;
The same code doesn't crash on 3.12.
CPython versions tested on:
3.13
Operating systems tested on:
Linux
Output from running 'python -VV' on the command line:
Python 3.13.0rc2 (main, Sep 7 2024, 00:00:00) [GCC 14.2.1 20240801 (Red Hat 14.2.1-1)]