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gh-135177: Raise OverflowError in _Py_call_instrumentation_jump to handle potential integer overflow #135202

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gh-135177: Raise OverflowError in _Py_call_instrumentation_jump to handle potential integer overflow #135202

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e47b73d
gh-135177: Raise OverflowError in _Py_call_instrumentation_jump to ha…
rialbat Jun 6, 2025
d0b499e
gh-135177: Fix error description
rialbat Jun 6, 2025
2eaf739
gh-135177: Updated the error description
rialbat Jun 6, 2025
0d4cfd0
gh-135177: Change `to` variable to a larger type to prevent potential…
rialbat Jun 6, 2025
c7e2e41
gh-135177: Fix compiler warning by casting sizeof(_Py_CODEUNIT) to Py…
rialbat Jun 6, 2025
2b6c6a0
Merge branch 'main' into fix-int-overflow-exception
skirpichev Jun 6, 2025
5b12771
Merge branch 'main' into fix-int-overflow-exception
rialbat Jun 6, 2025
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5 changes: 3 additions & 2 deletions Python/instrumentation.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1235,8 +1235,9 @@ _Py_call_instrumentation_jump(
assert(event == PY_MONITORING_EVENT_JUMP ||
event == PY_MONITORING_EVENT_BRANCH_RIGHT ||
event == PY_MONITORING_EVENT_BRANCH_LEFT);
int to = (int)(dest - _PyFrame_GetBytecode(frame));
PyObject *to_obj = PyLong_FromLong(to * (int)sizeof(_Py_CODEUNIT));
Py_ssize_t to = (dest - _PyFrame_GetBytecode(frame));
assert(to <= PY_SSIZE_T_MAX / (Py_ssize_t)sizeof(_Py_CODEUNIT));
PyObject *to_obj = PyLong_FromSsize_t(to * sizeof(_Py_CODEUNIT));
if (to_obj == NULL) {
return NULL;
}
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