Closed
Description
Bug report
Bug description:
TSAN reports a data race for the following program in a free-threaded build:
import collections.abc
import concurrent.futures
import functools
import threading
num_threads = 8
def closure(b, x):
b.wait()
for _ in range(10):
type(x).__annotations__
isinstance(x, collections.abc.Mapping)
with concurrent.futures.ThreadPoolExecutor(max_workers=num_threads) as executor:
for i in range(1000):
b = threading.Barrier(num_threads)
class Foo:
pass
for _ in range(num_threads):
executor.submit(functools.partial(closure, b, Foo()))TSAN report:
WARNING: ThreadSanitizer: data race (pid=1896711)
Read of size 4 at 0x7f766f2de990 by thread T8:
#0 PyType_Modified /usr/local/google/home/phawkins/p/cpython/Objects/typeobject.c:1053:15 (python3.13+0x305ab3) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#1 type_get_annotations /usr/local/google/home/phawkins/p/cpython/Objects/typeobject.c:1784:17 (python3.13+0x305ab3)
#2 getset_get /usr/local/google/home/phawkins/p/cpython/Objects/descrobject.c:193:16 (python3.13+0x1ff888) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#3 _Py_type_getattro_impl /usr/local/google/home/phawkins/p/cpython/Objects/typeobject.c:5405:19 (python3.13+0x2e955d) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#4 _Py_type_getattro /usr/local/google/home/phawkins/p/cpython/Objects/typeobject.c:5465:12 (python3.13+0x2e99a0) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#5 PyObject_GetAttr /usr/local/google/home/phawkins/p/cpython/Objects/object.c:1261:18 (python3.13+0x2945c7) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#6 _PyEval_EvalFrameDefault /usr/local/google/home/phawkins/p/cpython/Python/generated_cases.c.h:3766:28 (python3.13+0x3ee2b0) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#7 _PyEval_EvalFrame /usr/local/google/home/phawkins/p/cpython/./Include/internal/pycore_ceval.h:119:16 (python3.13+0x3dea3a) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#8 _PyEval_Vector /usr/local/google/home/phawkins/p/cpython/Python/ceval.c:1807:12 (python3.13+0x3dea3a)
#9 _PyFunction_Vectorcall /usr/local/google/home/phawkins/p/cpython/Objects/call.c (python3.13+0x1eb65f) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#10 _PyObject_VectorcallTstate /usr/local/google/home/phawkins/p/cpython/./Include/internal/pycore_call.h:168:11 (python3.13+0x572352) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#11 partial_vectorcall /usr/local/google/home/phawkins/p/cpython/./Modules/_functoolsmodule.c:252:16 (python3.13+0x572352)
#12 _PyVectorcall_Call /usr/local/google/home/phawkins/p/cpython/Objects/call.c:273:16 (python3.13+0x1eb2d3) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#13 _PyObject_Call /usr/local/google/home/phawkins/p/cpython/Objects/call.c:348:16 (python3.13+0x1eb2d3)
#14 PyObject_Call /usr/local/google/home/phawkins/p/cpython/Objects/call.c:373:12 (python3.13+0x1eb355) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#15 _PyEval_EvalFrameDefault /usr/local/google/home/phawkins/p/cpython/Python/generated_cases.c.h:1355:26 (python3.13+0x3e4af2) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#16 _PyEval_EvalFrame /usr/local/google/home/phawkins/p/cpython/./Include/internal/pycore_ceval.h:119:16 (python3.13+0x3dea3a) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#17 _PyEval_Vector /usr/local/google/home/phawkins/p/cpython/Python/ceval.c:1807:12 (python3.13+0x3dea3a)
#18 _PyFunction_Vectorcall /usr/local/google/home/phawkins/p/cpython/Objects/call.c (python3.13+0x1eb65f) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#19 _PyObject_VectorcallTstate /usr/local/google/home/phawkins/p/cpython/./Include/internal/pycore_call.h:168:11 (python3.13+0x1ef62f) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#20 method_vectorcall /usr/local/google/home/phawkins/p/cpython/Objects/classobject.c:70:20 (python3.13+0x1ef62f)
#21 _PyVectorcall_Call /usr/local/google/home/phawkins/p/cpython/Objects/call.c:273:16 (python3.13+0x1eb2d3) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#22 _PyObject_Call /usr/local/google/home/phawkins/p/cpython/Objects/call.c:348:16 (python3.13+0x1eb2d3)
#23 PyObject_Call /usr/local/google/home/phawkins/p/cpython/Objects/call.c:373:12 (python3.13+0x1eb355) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#24 thread_run /usr/local/google/home/phawkins/p/cpython/./Modules/_threadmodule.c:337:21 (python3.13+0x564a32) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#25 pythread_wrapper /usr/local/google/home/phawkins/p/cpython/Python/thread_pthread.h:243:5 (python3.13+0x4bddb7) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
Previous atomic write of size 4 at 0x7f766f2de990 by thread T7:
#0 _Py_atomic_store_uint32_relaxed /usr/local/google/home/phawkins/p/cpython/./Include/cpython/pyatomic_gcc.h:461:3 (python3.13+0x2e4bd9) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#1 set_version_unlocked /usr/local/google/home/phawkins/p/cpython/Objects/typeobject.c:978:5 (python3.13+0x2e4bd9)
#2 assign_version_tag /usr/local/google/home/phawkins/p/cpython/Objects/typeobject.c (python3.13+0x2e4bd9)
#3 _PyType_LookupRef /usr/local/google/home/phawkins/p/cpython/Objects/typeobject.c:5262:23 (python3.13+0x2e6495) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#4 _PyObject_GenericGetAttrWithDict /usr/local/google/home/phawkins/p/cpython/Objects/object.c:1659:13 (python3.13+0x295db9) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#5 PyObject_GenericGetAttr /usr/local/google/home/phawkins/p/cpython/Objects/object.c:1747:12 (python3.13+0x295c62) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#6 PyObject_GetAttr /usr/local/google/home/phawkins/p/cpython/Objects/object.c:1261:18 (python3.13+0x2945c7) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#7 _abc__abc_instancecheck_impl /usr/local/google/home/phawkins/p/cpython/./Modules/_abc.c:625:16 (python3.13+0x56ddb7) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#8 _abc__abc_instancecheck /usr/local/google/home/phawkins/p/cpython/./Modules/clinic/_abc.c.h:106:20 (python3.13+0x56ddb7)
#9 cfunction_vectorcall_FASTCALL /usr/local/google/home/phawkins/p/cpython/Objects/methodobject.c:425:24 (python3.13+0x289e0b) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#10 _PyObject_VectorcallTstate /usr/local/google/home/phawkins/p/cpython/./Include/internal/pycore_call.h:168:11 (python3.13+0x1eafea) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#11 PyObject_Vectorcall /usr/local/google/home/phawkins/p/cpython/Objects/call.c:327:12 (python3.13+0x1eafea)
#12 _PyEval_EvalFrameDefault /usr/local/google/home/phawkins/p/cpython/Python/generated_cases.c.h:813:23 (python3.13+0x3e290b) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#13 _PyEval_EvalFrame /usr/local/google/home/phawkins/p/cpython/./Include/internal/pycore_ceval.h:119:16 (python3.13+0x3dea3a) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#14 _PyEval_Vector /usr/local/google/home/phawkins/p/cpython/Python/ceval.c:1807:12 (python3.13+0x3dea3a)
#15 _PyFunction_Vectorcall /usr/local/google/home/phawkins/p/cpython/Objects/call.c (python3.13+0x1eb65f) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#16 _PyObject_VectorcallTstate /usr/local/google/home/phawkins/p/cpython/./Include/internal/pycore_call.h:168:11 (python3.13+0x1ef575) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#17 method_vectorcall /usr/local/google/home/phawkins/p/cpython/Objects/classobject.c:62:18 (python3.13+0x1ef575)
#18 _PyObject_VectorcallTstate /usr/local/google/home/phawkins/p/cpython/./Include/internal/pycore_call.h:168:11 (python3.13+0x1eb482) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#19 PyObject_CallOneArg /usr/local/google/home/phawkins/p/cpython/Objects/call.c:395:12 (python3.13+0x1eb482)
#20 object_recursive_isinstance /usr/local/google/home/phawkins/p/cpython/Objects/abstract.c:2717:25 (python3.13+0x1c3e69) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#21 PyObject_IsInstance /usr/local/google/home/phawkins/p/cpython/Objects/abstract.c:2742:12 (python3.13+0x1c3d7b) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#22 builtin_isinstance_impl /usr/local/google/home/phawkins/p/cpython/Python/bltinmodule.c:2751:14 (python3.13+0x3d9e16) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#23 builtin_isinstance /usr/local/google/home/phawkins/p/cpython/Python/clinic/bltinmodule.c.h:1191:20 (python3.13+0x3d9e16)
#24 cfunction_vectorcall_FASTCALL /usr/local/google/home/phawkins/p/cpython/Objects/methodobject.c:425:24 (python3.13+0x289e0b) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#25 _PyObject_VectorcallTstate /usr/local/google/home/phawkins/p/cpython/./Include/internal/pycore_call.h:168:11 (python3.13+0x1eafea) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#26 PyObject_Vectorcall /usr/local/google/home/phawkins/p/cpython/Objects/call.c:327:12 (python3.13+0x1eafea)
#27 _PyEval_EvalFrameDefault /usr/local/google/home/phawkins/p/cpython/Python/generated_cases.c.h:813:23 (python3.13+0x3e290b) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#28 _PyEval_EvalFrame /usr/local/google/home/phawkins/p/cpython/./Include/internal/pycore_ceval.h:119:16 (python3.13+0x3dea3a) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#29 _PyEval_Vector /usr/local/google/home/phawkins/p/cpython/Python/ceval.c:1807:12 (python3.13+0x3dea3a)
#30 _PyFunction_Vectorcall /usr/local/google/home/phawkins/p/cpython/Objects/call.c (python3.13+0x1eb65f) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#31 _PyObject_VectorcallTstate /usr/local/google/home/phawkins/p/cpython/./Include/internal/pycore_call.h:168:11 (python3.13+0x572352) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#32 partial_vectorcall /usr/local/google/home/phawkins/p/cpython/./Modules/_functoolsmodule.c:252:16 (python3.13+0x572352)
#33 _PyVectorcall_Call /usr/local/google/home/phawkins/p/cpython/Objects/call.c:273:16 (python3.13+0x1eb2d3) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#34 _PyObject_Call /usr/local/google/home/phawkins/p/cpython/Objects/call.c:348:16 (python3.13+0x1eb2d3)
#35 PyObject_Call /usr/local/google/home/phawkins/p/cpython/Objects/call.c:373:12 (python3.13+0x1eb355) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#36 _PyEval_EvalFrameDefault /usr/local/google/home/phawkins/p/cpython/Python/generated_cases.c.h:1355:26 (python3.13+0x3e4af2) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#37 _PyEval_EvalFrame /usr/local/google/home/phawkins/p/cpython/./Include/internal/pycore_ceval.h:119:16 (python3.13+0x3dea3a) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#38 _PyEval_Vector /usr/local/google/home/phawkins/p/cpython/Python/ceval.c:1807:12 (python3.13+0x3dea3a)
#39 _PyFunction_Vectorcall /usr/local/google/home/phawkins/p/cpython/Objects/call.c (python3.13+0x1eb65f) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#40 _PyObject_VectorcallTstate /usr/local/google/home/phawkins/p/cpython/./Include/internal/pycore_call.h:168:11 (python3.13+0x1ef62f) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#41 method_vectorcall /usr/local/google/home/phawkins/p/cpython/Objects/classobject.c:70:20 (python3.13+0x1ef62f)
#42 _PyVectorcall_Call /usr/local/google/home/phawkins/p/cpython/Objects/call.c:273:16 (python3.13+0x1eb2d3) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#43 _PyObject_Call /usr/local/google/home/phawkins/p/cpython/Objects/call.c:348:16 (python3.13+0x1eb2d3)
#44 PyObject_Call /usr/local/google/home/phawkins/p/cpython/Objects/call.c:373:12 (python3.13+0x1eb355) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#45 thread_run /usr/local/google/home/phawkins/p/cpython/./Modules/_threadmodule.c:337:21 (python3.13+0x564a32) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
#46 pythread_wrapper /usr/local/google/home/phawkins/p/cpython/Python/thread_pthread.h:243:5 (python3.13+0x4bddb7) (BuildId: 19c569fa942016d8ac49d19fd40ccb1ddded939b)
Tested at Python 3.13 commit 65da5db
CPython versions tested on:
3.13
Operating systems tested on:
Linux