https://github.com/python/cpython/commit/28b148fb32e4548b461137d18d1ab6d366395d36 commit: 28b148fb32e4548b461137d18d1ab6d366395d36 branch: main author: sobolevn <[email protected]> committer: sobolevn <[email protected]> date: 2024-11-02T00:53:29+03:00 summary:
gh-126220: Fix crash on calls to `_lsprof.Profiler` methods with 0 args (backportable) (#126271) Co-authored-by: Erlend E. Aasland <[email protected]> files: A Misc/NEWS.d/next/Library/2024-10-31-14-06-28.gh-issue-126220.uJAJCU.rst M Lib/test/test_cprofile.py M Modules/_lsprof.c diff --git a/Lib/test/test_cprofile.py b/Lib/test/test_cprofile.py index b2595eccc82f70..65720871d5c5f0 100644 --- a/Lib/test/test_cprofile.py +++ b/Lib/test/test_cprofile.py @@ -30,6 +30,22 @@ def test_bad_counter_during_dealloc(self): self.assertEqual(cm.unraisable.exc_type, TypeError) + def test_crash_with_not_enough_args(self): + # gh-126220 + import _lsprof + + for profile in [_lsprof.Profiler(), cProfile.Profile()]: + for method in [ + "_pystart_callback", + "_pyreturn_callback", + "_ccall_callback", + "_creturn_callback", + ]: + with self.subTest(profile=profile, method=method): + method_obj = getattr(profile, method) + with self.assertRaises(TypeError): + method_obj() # should not crash + def test_evil_external_timer(self): # gh-120289 # Disabling profiler in external timer should not crash diff --git a/Misc/NEWS.d/next/Library/2024-10-31-14-06-28.gh-issue-126220.uJAJCU.rst b/Misc/NEWS.d/next/Library/2024-10-31-14-06-28.gh-issue-126220.uJAJCU.rst new file mode 100644 index 00000000000000..555f2f3bafbf33 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2024-10-31-14-06-28.gh-issue-126220.uJAJCU.rst @@ -0,0 +1,2 @@ +Fix crash in :class:`!cProfile.Profile` and :class:`!_lsprof.Profiler` when their +callbacks were directly called with 0 arguments. diff --git a/Modules/_lsprof.c b/Modules/_lsprof.c index 8b6906234bdc25..06958a078509d9 100644 --- a/Modules/_lsprof.c +++ b/Modules/_lsprof.c @@ -608,6 +608,12 @@ setBuiltins(ProfilerObject *pObj, int nvalue) PyObject* pystart_callback(ProfilerObject* self, PyObject *const *args, Py_ssize_t size) { + if (size < 2) { + PyErr_Format(PyExc_TypeError, + "_pystart_callback expected 2 arguments, got %zd", + size); + return NULL; + } PyObject* code = args[0]; ptrace_enter_call((PyObject*)self, (void *)code, (PyObject *)code); @@ -616,6 +622,12 @@ PyObject* pystart_callback(ProfilerObject* self, PyObject *const *args, Py_ssize PyObject* pyreturn_callback(ProfilerObject* self, PyObject *const *args, Py_ssize_t size) { + if (size < 3) { + PyErr_Format(PyExc_TypeError, + "_pyreturn_callback expected 3 arguments, got %zd", + size); + return NULL; + } PyObject* code = args[0]; ptrace_leave_call((PyObject*)self, (void *)code); @@ -651,6 +663,12 @@ PyObject* get_cfunc_from_callable(PyObject* callable, PyObject* self_arg, PyObje PyObject* ccall_callback(ProfilerObject* self, PyObject *const *args, Py_ssize_t size) { + if (size < 4) { + PyErr_Format(PyExc_TypeError, + "_ccall_callback expected 4 arguments, got %zd", + size); + return NULL; + } if (self->flags & POF_BUILTINS) { PyObject* callable = args[2]; PyObject* self_arg = args[3]; @@ -669,6 +687,12 @@ PyObject* ccall_callback(ProfilerObject* self, PyObject *const *args, Py_ssize_t PyObject* creturn_callback(ProfilerObject* self, PyObject *const *args, Py_ssize_t size) { + if (size < 4) { + PyErr_Format(PyExc_TypeError, + "_creturn_callback expected 4 arguments, got %zd", + size); + return NULL; + } if (self->flags & POF_BUILTINS) { PyObject* callable = args[2]; PyObject* self_arg = args[3]; _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/python-checkins.python.org/ Member address: [email protected]
