Crash report

What happened?

Compiling and linking below program results in a crash when run on aarch64 (macOS, Debian VM or Ubuntu 22 VM in Azure for example):

#include <Python.h>

int main(int argc, char *argv[])
{
Py_Initialize();
PyRun_SimpleString("import hashlib\nprint('test1')");
Py_Finalize();
Py_Initialize();
PyRun_SimpleString("import trace\ntrace.Trace().run('import hashlib')\nprint('test2')");
Py_Finalize();
return 0;
}

The trace in the second import is just for better context.
It seems not reproducible on Intel.
On a debug python build it asserts with:
testcase1: ../Python/getargs.c:2052: parser_init: Assertion `parser->kwtuple != NULL' failed.

The backtrace looks like this:
#7 0x0000fffff7906fec [PAC] in _PyArg_UnpackKeywords (
args=args@entry=0xfffff7fec5d8, nargs=nargs@entry=0,
kwargs=kwargs@entry=0x0, kwnames=kwnames@entry=0xfffff6620be0,
parser=parser@entry=0xfffff6f70790 <_parser.16>, minpos=minpos@entry=0,
maxpos=maxpos@entry=1, minkw=minkw@entry=0, buf=buf@entry=0xffffffffe180)
at ../Python/getargs.c:2371
#8 0x0000fffff6f57500 [PAC] in _hashlib_openssl_md5 (module=0xfffff6553d70,
args=args@entry=0xfffff7fec5d8, nargs=nargs@entry=0,
kwnames=kwnames@entry=0xfffff6620be0)
at ../Modules/clinic/_hashopenssl.c.h:343
#9 0x0000fffff780c010 [PAC] in cfunction_vectorcall_FASTCALL_KEYWORDS (
func=0xfffff656c050, args=0xfffff7fec5d8, nargsf=,
kwnames=0xfffff6620be0) at ../Objects/methodobject.c:438
#10 0x0000fffff77b6c18 [PAC] in _PyObject_VectorcallTstate (
tstate=0xfffff7f6e1f0 <_PyRuntime+475736>,
callable=callable@entry=0xfffff656c050, args=args@entry=0xfffff7fec5d8,
nargsf=nargsf@entry=9223372036854775808,
kwnames=kwnames@entry=0xfffff6620be0)
at ../Include/internal/pycore_call.h:92

Looking at the hashlib_openssl_md5 function, the use of static non-const structures seems very suspicious at least.

CPython versions tested on:

3.12

Operating systems tested on:

Linux, macOS

Output from running 'python -VV' on the command line:

Python 3.12.4 (main, Jun 8 2024, 04:51:36) [Clang 15.0.0 (clang-1500.1.0.2.5)]