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gh-103295: fix stack overwrite on 32-bit in perf map test harness #104811

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Merged
merged 1 commit into from
May 23, 2023
Merged

gh-103295: fix stack overwrite on 32-bit in perf map test harness #104811

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13 changes: 9 additions & 4 deletions Modules/_testinternalcapi.c
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Original file line number Diff line number Diff line change
Expand Up @@ -762,19 +762,24 @@ clear_extension(PyObject *self, PyObject *args)
static PyObject *
write_perf_map_entry(PyObject *self, PyObject *args)
{
PyObject *code_addr_v;
const void *code_addr;
unsigned int code_size;
const char *entry_name;

if (!PyArg_ParseTuple(args, "KIs", &code_addr, &code_size, &entry_name))
if (!PyArg_ParseTuple(args, "OIs", &code_addr_v, &code_size, &entry_name))
return NULL;
code_addr = PyLong_AsVoidPtr(code_addr_v);
if (code_addr == NULL) {
return NULL;
}

int ret = PyUnstable_WritePerfMapEntry(code_addr, code_size, entry_name);
if (ret == -1) {
PyErr_SetString(PyExc_OSError, "Failed to write performance map entry");
if (ret < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
return Py_BuildValue("i", ret);
return PyLong_FromLong(ret);
}

static PyObject *
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