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gh-111178: fix UBSan failures for Python/legacy_tracing.c #131611

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Merged
merged 7 commits into from
Mar 24, 2025
Merged

gh-111178: fix UBSan failures for Python/legacy_tracing.c #131611

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77b2576
fix UBSan failures for `legacy_tracing.c`
picnixz Mar 20, 2025
af9703a
fixup
picnixz Mar 20, 2025
b21ae73
fixup
picnixz Mar 20, 2025
2a3fea5
Merge remote-tracking branch 'upstream/main' into fix/ubsan/sys-funcs…
picnixz Mar 23, 2025
e5ab45a
Merge remote-tracking branch 'upstream/main' into fix/ubsan/iterobjec…
picnixz Mar 23, 2025
951f70c
renaming
picnixz Mar 23, 2025
256eb57
fix compilation
picnixz Mar 23, 2025
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67 changes: 38 additions & 29 deletions Python/legacy_tracing.c
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,8 @@ typedef struct _PyLegacyEventHandler {
int event;
} _PyLegacyEventHandler;

#define _PyLegacyEventHandler_CAST(op) ((_PyLegacyEventHandler *)(op))

#ifdef Py_GIL_DISABLED
#define LOCK_SETUP() PyMutex_Lock(&_PyRuntime.ceval.sys_trace_profile_mutex);
#define UNLOCK_SETUP() PyMutex_Unlock(&_PyRuntime.ceval.sys_trace_profile_mutex);
Expand Down Expand Up @@ -56,49 +58,54 @@ call_profile_func(_PyLegacyEventHandler *self, PyObject *arg)

static PyObject *
sys_profile_start(
_PyLegacyEventHandler *self, PyObject *const *args,
PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(callable);
assert(kwnames == NULL);
assert(PyVectorcall_NARGS(nargsf) == 2);
return call_profile_func(self, Py_None);
}

static PyObject *
sys_profile_throw(
_PyLegacyEventHandler *self, PyObject *const *args,
PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(callable);
assert(kwnames == NULL);
assert(PyVectorcall_NARGS(nargsf) == 3);
return call_profile_func(self, Py_None);
}

static PyObject *
sys_profile_return(
_PyLegacyEventHandler *self, PyObject *const *args,
PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(callable);
assert(kwnames == NULL);
assert(PyVectorcall_NARGS(nargsf) == 3);
return call_profile_func(self, args[2]);
}

static PyObject *
sys_profile_unwind(
_PyLegacyEventHandler *self, PyObject *const *args,
PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(callable);
assert(kwnames == NULL);
assert(PyVectorcall_NARGS(nargsf) == 3);
return call_profile_func(self, NULL);
return call_profile_func(self, NULL);
}

static PyObject *
sys_profile_call_or_return(
_PyLegacyEventHandler *self, PyObject *const *args,
PyObject *op, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(op);
assert(kwnames == NULL);
assert(PyVectorcall_NARGS(nargsf) == 4);
PyObject *callable = args[2];
Expand Down Expand Up @@ -188,7 +195,7 @@ sys_trace_exception_func(
PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = (_PyLegacyEventHandler*)callable;
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(callable);
assert(kwnames == NULL);
assert(PyVectorcall_NARGS(nargsf) == 3);
PyObject *exc = args[2];
Expand All @@ -213,7 +220,7 @@ sys_trace_start(
PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = (_PyLegacyEventHandler*)callable;
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(callable);
assert(kwnames == NULL);
assert(PyVectorcall_NARGS(nargsf) == 2);
return call_trace_func(self, Py_None);
Expand All @@ -224,7 +231,7 @@ sys_trace_throw(
PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = (_PyLegacyEventHandler*)callable;
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(callable);
assert(kwnames == NULL);
assert(PyVectorcall_NARGS(nargsf) == 3);
return call_trace_func(self, Py_None);
Expand All @@ -235,7 +242,7 @@ sys_trace_unwind(
PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = (_PyLegacyEventHandler*)callable;
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(callable);
assert(kwnames == NULL);
assert(PyVectorcall_NARGS(nargsf) == 3);
return call_trace_func(self, NULL);
Expand All @@ -246,7 +253,7 @@ sys_trace_return(
PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = (_PyLegacyEventHandler*)callable;
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(callable);
assert(!PyErr_Occurred());
assert(kwnames == NULL);
assert(PyVectorcall_NARGS(nargsf) == 3);
Expand All @@ -261,7 +268,7 @@ sys_trace_yield(
PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = (_PyLegacyEventHandler*)callable;
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(callable);
assert(kwnames == NULL);
assert(PyVectorcall_NARGS(nargsf) == 3);
return call_trace_func(self, args[2]);
Expand All @@ -272,7 +279,7 @@ sys_trace_instruction_func(
PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = (_PyLegacyEventHandler*)callable;
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(callable);
assert(kwnames == NULL);
assert(PyVectorcall_NARGS(nargsf) == 2);
PyFrameObject *frame = PyEval_GetFrame();
Expand Down Expand Up @@ -325,7 +332,7 @@ sys_trace_line_func(
PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = (_PyLegacyEventHandler*)callable;
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(callable);
assert(kwnames == NULL);
PyThreadState *tstate = _PyThreadState_GET();
if (tstate->c_tracefunc == NULL) {
Expand All @@ -352,7 +359,7 @@ sys_trace_jump_func(
PyObject *callable, PyObject *const *args,
size_t nargsf, PyObject *kwnames
) {
_PyLegacyEventHandler *self = (_PyLegacyEventHandler*)callable;
_PyLegacyEventHandler *self = _PyLegacyEventHandler_CAST(callable);
assert(kwnames == NULL);
PyThreadState *tstate = _PyThreadState_GET();
if (tstate->c_tracefunc == NULL) {
Expand Down Expand Up @@ -439,38 +446,40 @@ setup_profile(PyThreadState *tstate, Py_tracefunc func, PyObject *arg, PyObject
if (!tstate->interp->sys_profile_initialized) {
tstate->interp->sys_profile_initialized = true;
if (set_callbacks(PY_MONITORING_SYS_PROFILE_ID,
(vectorcallfunc)sys_profile_start, PyTrace_CALL,
PY_MONITORING_EVENT_PY_START, PY_MONITORING_EVENT_PY_RESUME)) {
sys_profile_start, PyTrace_CALL,
PY_MONITORING_EVENT_PY_START,
PY_MONITORING_EVENT_PY_RESUME)) {
return -1;
}
if (set_callbacks(PY_MONITORING_SYS_PROFILE_ID,
(vectorcallfunc)sys_profile_throw, PyTrace_CALL,
PY_MONITORING_EVENT_PY_THROW, -1)) {
sys_profile_throw, PyTrace_CALL,
PY_MONITORING_EVENT_PY_THROW, -1)) {
return -1;
}
if (set_callbacks(PY_MONITORING_SYS_PROFILE_ID,
(vectorcallfunc)sys_profile_return, PyTrace_RETURN,
PY_MONITORING_EVENT_PY_RETURN, PY_MONITORING_EVENT_PY_YIELD)) {
sys_profile_return, PyTrace_RETURN,
PY_MONITORING_EVENT_PY_RETURN,
PY_MONITORING_EVENT_PY_YIELD)) {
return -1;
}
if (set_callbacks(PY_MONITORING_SYS_PROFILE_ID,
(vectorcallfunc)sys_profile_unwind, PyTrace_RETURN,
PY_MONITORING_EVENT_PY_UNWIND, -1)) {
sys_profile_unwind, PyTrace_RETURN,
PY_MONITORING_EVENT_PY_UNWIND, -1)) {
return -1;
}
if (set_callbacks(PY_MONITORING_SYS_PROFILE_ID,
(vectorcallfunc)sys_profile_call_or_return, PyTrace_C_CALL,
PY_MONITORING_EVENT_CALL, -1)) {
sys_profile_call_or_return, PyTrace_C_CALL,
PY_MONITORING_EVENT_CALL, -1)) {
return -1;
}
if (set_callbacks(PY_MONITORING_SYS_PROFILE_ID,
(vectorcallfunc)sys_profile_call_or_return, PyTrace_C_RETURN,
PY_MONITORING_EVENT_C_RETURN, -1)) {
sys_profile_call_or_return, PyTrace_C_RETURN,
PY_MONITORING_EVENT_C_RETURN, -1)) {
return -1;
}
if (set_callbacks(PY_MONITORING_SYS_PROFILE_ID,
(vectorcallfunc)sys_profile_call_or_return, PyTrace_C_EXCEPTION,
PY_MONITORING_EVENT_C_RAISE, -1)) {
sys_profile_call_or_return, PyTrace_C_EXCEPTION,
PY_MONITORING_EVENT_C_RAISE, -1)) {
return -1;
}
}
Expand Down
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