[issue34410] Segfault/TimeoutError: itertools.tee of multiprocessing.pool.imap_unordered
Karthikeyan Singaravelan
report at bugs.python.org
Thu Aug 16 01:40:12 EDT 2018
Karthikeyan Singaravelan <tir.karthi at gmail.com> added the comment:
Thanks for the script. I can reproduce this on master and Python 3.6 too. Sometimes the attached script causes timeout error. Running it under gdb gives me below :
[New Thread 0x18ab of process 10682]
[New Thread 0x1903 of process 10682]
[New Thread 0x1a03 of process 10682]
Thread 2 received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x18ab of process 10682]
0x000000010033e509 in teedataobject_getitem (tdo=0x1014361c0, i=1)
at ./Modules/itertoolsmodule.c:454
454 Py_INCREF(value);
Backtrace :
#0 0x000000010033e509 in teedataobject_getitem (tdo=0x100645640, i=1)
at ./Modules/itertoolsmodule.c:454
#1 0x000000010033e290 in tee_next (to=0x10308a668) at ./Modules/itertoolsmodule.c:637
#2 0x0000000100059844 in enum_next (en=0x10308fc20) at Objects/enumobject.c:156
#3 0x00000001002297e1 in _PyEval_EvalFrameDefault (
f=Frame 0x100646710, for file /Users/karthikeyansingaravelan/stuff/python/cpython/Lib/multiprocessing/pool.py, line 292, in _guarded_task_generation (self=<Pool(_ctx=<ForkContext at remote 0x101ddce90>, _inqueue=<SimpleQueue(_reader=<Connection(_handle=4, _readable=True, _writable=False) at remote 0x101c236b0>, _writer=<Connection(_handle=5, _readable=False, _writable=True) at remote 0x101c23c50>, _rlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x101f53e10>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x101f53e10>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x101f53e10>) at remote 0x101f50050>, _poll=<method at remote 0x10186e2c0>, _wlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078178>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078178>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078178>) at remote 0x101f54dd0>) at remote 0x101bf5cb0>, _ou...(truncated), throwflag=0) at Python/ceval.c:2905
#4 0x0000000100215277 in PyEval_EvalFrameEx (
f=Frame 0x100646710, for file /Users/karthikeyansingaravelan/stuff/python/cpython/Lib/multiprocessing/pool.py, line 292, in _guarded_task_generation (self=<Pool(_ctx=<ForkContext at remote 0x101ddce90>, _inqueue=<SimpleQueue(_reader=<Connection(_handle=4, _readable=True, _writable=False) at remote 0x101c236b0>, _writer=<Connection(_handle=5, _readable=False, _writable=True) at remote 0x101c23c50>, _rlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x101f53e10>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x101f53e10>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x101f53e10>) at remote 0x101f50050>, _poll=<method at remote 0x10186e2c0>, _wlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078178>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078178>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078178>) at remote 0x101f54dd0>) at remote 0x101bf5cb0>, _ou...(truncated), throwflag=0) at Python/ceval.c:536
#5 0x000000010006a3e2 in gen_send_ex (gen=0x1030349b0, arg=0x0, exc=0, closing=0)
at Objects/genobject.c:221
#6 0x000000010006ba1f in gen_iternext (gen=0x1030349b0) at Objects/genobject.c:542
#7 0x00000001002297e1 in _PyEval_EvalFrameDefault (
f=Frame 0x101909730, for file /Users/karthikeyansingaravelan/stuff/python/cpython/Lib/multiprocessing/pool.py, line 426, in _handle_tasks (taskqueue=<_queue.SimpleQueue at remote 0x101f1daa0>, put=<method at remote 0x101db5ae0>, outqueue=<SimpleQueue(_reader=<Connection(_handle=8, _readable=True, _writable=False) at remote 0x10306d410>, _writer=<Connection(_handle=9, _readable=False, _writable=True) at remote 0x10306d9b0>, _rlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078ba0>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078ba0>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078ba0>) at remote 0x10306de90>, _poll=<method at remote 0x1018eddb8>, _wlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078c08>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078c08>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078c08>) at remote 0x10306df50>) a...(truncated), throwflag=0) at Python/ceval.c:2905
#8 0x0000000100215277 in PyEval_EvalFrameEx (
f=Frame 0x101909730, for file /Users/karthikeyansingaravelan/stuff/python/cpython/Lib/multiprocessing/pool.py, line 426, in _handle_tasks (taskqueue=<_queue.SimpleQueue at remote 0x101f1daa0>, put=<method at remote 0x101db5ae0>, outqueue=<SimpleQueue(_reader=<Connection(_handle=8, _readable=True, _writable=False) at remote 0x10306d410>, _writer=<Connection(_handle=9, _readable=False, _writable=True) at remote 0x10306d9b0>, _rlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078ba0>, ac---Type <return> to continue, or q <return> to quit---
quire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078ba0>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078ba0>) at remote 0x10306de90>, _poll=<method at remote 0x1018eddb8>, _wlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078c08>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078c08>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078c08>) at remote 0x10306df50>) a...(truncated), throwflag=0) at Python/ceval.c:536
#9 0x0000000100045d63 in function_code_fastcall (co=0x101de77c0, args=0x1030693a0, nargs=5,
globals={'__name__': 'multiprocessing.pool', '__doc__': None, '__package__': 'multiprocessing', '__loader__': <SourceFileLoader(name='multiprocessing.pool', path='/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/multiprocessing/pool.py') at remote 0x101c23b90>, '__spec__': <ModuleSpec(name='multiprocessing.pool', loader=<...>, origin='/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/multiprocessing/pool.py', loader_state=None, submodule_search_locations=None, _set_fileattr=True, _cached='/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/multiprocessing/__pycache__/pool.cpython-38.pyc', _initializing=False) at remote 0x101c23bf0>, '__file__': '/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/multiprocessing/pool.py', '__cached__': '/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/multiprocessing/__pycache__/pool.cpython-38.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis repr...(truncated)) at Objects/call.c:283
#10 0x0000000100043d91 in _PyFunction_FastCallDict (func=<function at remote 0x101f41f70>,
args=0x103069378, nargs=5, kwargs={}) at Objects/call.c:322
#11 0x0000000100045902 in PyObject_Call (callable=<function at remote 0x101f41f70>,
args=(<_queue.SimpleQueue at remote 0x101f1daa0>, <method at remote 0x101db5ae0>, <SimpleQueue(_reader=<Connection(_handle=8, _readable=True, _writable=False) at remote 0x10306d410>, _writer=<Connection(_handle=9, _readable=False, _writable=True) at remote 0x10306d9b0>, _rlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078ba0>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078ba0>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078ba0>) at remote 0x10306de90>, _poll=<method at remote 0x1018eddb8>, _wlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078c08>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078c08>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078c08>) at remote 0x10306df50>) at remote 0x101f50530>, [<ForkProcess(_identity=(1,), _config={'authkey': <AuthenticationString at remote 0x101bfcdd0>, 'semprefix': '/mp', 'daemon': True}, _pa...(truncated), kwargs={}) at Objects/call.c:226
#12 0x00000001002342bc in do_call_core (func=<function at remote 0x101f41f70>,
callargs=(<_queue.SimpleQueue at remote 0x101f1daa0>, <method at remote 0x101db5ae0>, <SimpleQueue(_reader=<Connection(_handle=8, _readable=True, _writable=False) at remote 0x10306d410>, _writer=<Connection(_handle=9, _readable=False, _writable=True) at remote 0x10306d9b0>, _rlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078ba0>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078ba0>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078ba0>) at remote 0x10306de90>, _poll=<method at remote 0x1018eddb8>, _wlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078c08>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078c08>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078c08>) at remote 0x10306df50>) at remote 0x101f50530>, [<ForkProcess(_identity=(1,), _config={'authkey': <AuthenticationString at remote 0x101bfcdd0>, 'semprefix': '/mp', 'daemon': True}, _pa...(truncated), kwdict={}) at Python/ceval.c:4652
#13 0x000000010022ca2b in _PyEval_EvalFrameDefault (
f=Frame 0x10308d050, for file /Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py, line 865, in run (self=<Thread(_target=<function at remote 0x101f41f70>, _name='Thread-2', _args=(<_queue.SimpleQueue at remote 0x101f1daa0>, <method at remote 0x101db5ae0>, <SimpleQueue(_reader=<Connection(_handle=8, _readable=True, _writable=False) at remote 0x10306d410>, _writer=<Connection(_hand---Type <return> to continue, or q <return> to quit---
le=9, _readable=False, _writable=True) at remote 0x10306d9b0>, _rlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078ba0>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078ba0>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078ba0>) at remote 0x10306de90>, _poll=<method at remote 0x1018eddb8>, _wlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078c08>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078c08>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x1...(truncated), throwflag=0) at Python/ceval.c:3267
#14 0x0000000100215277 in PyEval_EvalFrameEx (
f=Frame 0x10308d050, for file /Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py, line 865, in run (self=<Thread(_target=<function at remote 0x101f41f70>, _name='Thread-2', _args=(<_queue.SimpleQueue at remote 0x101f1daa0>, <method at remote 0x101db5ae0>, <SimpleQueue(_reader=<Connection(_handle=8, _readable=True, _writable=False) at remote 0x10306d410>, _writer=<Connection(_handle=9, _readable=False, _writable=True) at remote 0x10306d9b0>, _rlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078ba0>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078ba0>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078ba0>) at remote 0x10306de90>, _poll=<method at remote 0x1018eddb8>, _wlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078c08>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078c08>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x1...(truncated), throwflag=0) at Python/ceval.c:536
#15 0x0000000100045d63 in function_code_fastcall (co=0x101c7aa00, args=0x10190a8f8, nargs=1,
globals={'__name__': 'threading', '__doc__': "Thread module emulating a subset of Java's threading model.", '__package__': '', '__loader__': <SourceFileLoader(name='threading', path='/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py') at remote 0x101c6a4d0>, '__spec__': <ModuleSpec(name='threading', loader=<...>, origin='/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py', loader_state=None, submodule_search_locations=None, _set_fileattr=True, _cached='/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/__pycache__/threading.cpython-38.pyc', _initializing=False) at remote 0x101c6a530>, '__file__': '/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py', '__cached__': '/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/__pycache__/threading.cpython-38.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis represents `...' in slices.", '__package__': '', '...(truncated)) at Objects/call.c:283
#16 0x0000000100045069 in _PyFunction_FastCallKeywords (func=<function at remote 0x101d9e890>,
stack=0x10190a8f0, nargs=1, kwnames=0x0) at Objects/call.c:408
#17 0x0000000100233e50 in call_function (pp_stack=0x103b522b8, oparg=1, kwnames=0x0)
at Python/ceval.c:4623
#18 0x000000010022bcf9 in _PyEval_EvalFrameDefault (
f=Frame 0x10190a750, for file /Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py, line 917, in _bootstrap_inner (self=<Thread(_target=<function at remote 0x101f41f70>, _name='Thread-2', _args=(<_queue.SimpleQueue at remote 0x101f1daa0>, <method at remote 0x101db5ae0>, <SimpleQueue(_reader=<Connection(_handle=8, _readable=True, _writable=False) at remote 0x10306d410>, _writer=<Connection(_handle=9, _readable=False, _writable=True) at remote 0x10306d9b0>, _rlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078ba0>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078ba0>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078ba0>) at remote 0x10306de90>, _poll=<method at remote 0x1018eddb8>, _wlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078c08>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078c08>, release=<built-in method release of _multiprocessing.SemLock object ...(truncated), throwflag=0) at Python/ceval.c:3186
#19 0x0000000100215277 in PyEval_EvalFrameEx (
f=Frame 0x10190a750, for file /Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.p---Type <return> to continue, or q <return> to quit---
y, line 917, in _bootstrap_inner (self=<Thread(_target=<function at remote 0x101f41f70>, _name='Thread-2', _args=(<_queue.SimpleQueue at remote 0x101f1daa0>, <method at remote 0x101db5ae0>, <SimpleQueue(_reader=<Connection(_handle=8, _readable=True, _writable=False) at remote 0x10306d410>, _writer=<Connection(_handle=9, _readable=False, _writable=True) at remote 0x10306d9b0>, _rlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078ba0>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078ba0>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078ba0>) at remote 0x10306de90>, _poll=<method at remote 0x1018eddb8>, _wlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078c08>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078c08>, release=<built-in method release of _multiprocessing.SemLock object ...(truncated), throwflag=0) at Python/ceval.c:536
#20 0x0000000100045d63 in function_code_fastcall (co=0x101c7ad00, args=0x103086b68, nargs=1,
globals={'__name__': 'threading', '__doc__': "Thread module emulating a subset of Java's threading model.", '__package__': '', '__loader__': <SourceFileLoader(name='threading', path='/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py') at remote 0x101c6a4d0>, '__spec__': <ModuleSpec(name='threading', loader=<...>, origin='/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py', loader_state=None, submodule_search_locations=None, _set_fileattr=True, _cached='/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/__pycache__/threading.cpython-38.pyc', _initializing=False) at remote 0x101c6a530>, '__file__': '/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py', '__cached__': '/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/__pycache__/threading.cpython-38.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis represents `...' in slices.", '__package__': '', '...(truncated)) at Objects/call.c:283
#21 0x0000000100045069 in _PyFunction_FastCallKeywords (func=<function at remote 0x101d9eb50>,
stack=0x103086b60, nargs=1, kwnames=0x0) at Objects/call.c:408
#22 0x0000000100233e50 in call_function (pp_stack=0x103b54508, oparg=1, kwnames=0x0)
at Python/ceval.c:4623
#23 0x000000010022bcf9 in _PyEval_EvalFrameDefault (
f=Frame 0x1030869d8, for file /Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py, line 885, in _bootstrap (self=<Thread(_target=<function at remote 0x101f41f70>, _name='Thread-2', _args=(<_queue.SimpleQueue at remote 0x101f1daa0>, <method at remote 0x101db5ae0>, <SimpleQueue(_reader=<Connection(_handle=8, _readable=True, _writable=False) at remote 0x10306d410>, _writer=<Connection(_handle=9, _readable=False, _writable=True) at remote 0x10306d9b0>, _rlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078ba0>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078ba0>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078ba0>) at remote 0x10306de90>, _poll=<method at remote 0x1018eddb8>, _wlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078c08>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078c08>, release=<built-in method release of _multiprocessing.SemLock object at rem...(truncated), throwflag=0) at Python/ceval.c:3186
#24 0x0000000100215277 in PyEval_EvalFrameEx (
f=Frame 0x1030869d8, for file /Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py, line 885, in _bootstrap (self=<Thread(_target=<function at remote 0x101f41f70>, _name='Thread-2', _args=(<_queue.SimpleQueue at remote 0x101f1daa0>, <method at remote 0x101db5ae0>, <SimpleQueue(_reader=<Connection(_handle=8, _readable=True, _writable=False) at remote 0x10306d410>, _writer=<Connection(_handle=9, _readable=False, _writable=True) at remote 0x10306d9b0>, _rlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078ba0>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078ba0>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078ba0>) at remote 0x10306de90>, _poll=<method at remote 0x1018eddb8>, _wlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078c08>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078c08>, release=<built-in method release of _multiprocessing.S---Type <return> to continue, or q <return> to quit---
emLock object at rem...(truncated), throwflag=0) at Python/ceval.c:536
#25 0x0000000100045d63 in function_code_fastcall (co=0x101c7aac0, args=0x103b55d68, nargs=1,
globals={'__name__': 'threading', '__doc__': "Thread module emulating a subset of Java's threading model.", '__package__': '', '__loader__': <SourceFileLoader(name='threading', path='/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py') at remote 0x101c6a4d0>, '__spec__': <ModuleSpec(name='threading', loader=<...>, origin='/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py', loader_state=None, submodule_search_locations=None, _set_fileattr=True, _cached='/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/__pycache__/threading.cpython-38.pyc', _initializing=False) at remote 0x101c6a530>, '__file__': '/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/threading.py', '__cached__': '/Users/karthikeyansingaravelan/stuff/python/cpython/Lib/__pycache__/threading.cpython-38.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis represents `...' in slices.", '__package__': '', '...(truncated)) at Objects/call.c:283
#26 0x0000000100043d91 in _PyFunction_FastCallDict (func=<function at remote 0x101d9e940>,
args=0x103b55d60, nargs=1, kwargs=0x0) at Objects/call.c:322
#27 0x00000001000437e4 in _PyObject_FastCallDict (callable=<function at remote 0x101d9e940>,
args=0x103b55d60, nargs=1, kwargs=0x0) at Objects/call.c:98
#28 0x0000000100047d29 in _PyObject_Call_Prepend (callable=<function at remote 0x101d9e940>,
obj=<Thread(_target=<function at remote 0x101f41f70>, _name='Thread-2', _args=(<_queue.SimpleQueue at remote 0x101f1daa0>, <method at remote 0x101db5ae0>, <SimpleQueue(_reader=<Connection(_handle=8, _readable=True, _writable=False) at remote 0x10306d410>, _writer=<Connection(_handle=9, _readable=False, _writable=True) at remote 0x10306d9b0>, _rlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078ba0>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078ba0>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078ba0>) at remote 0x10306de90>, _poll=<method at remote 0x1018eddb8>, _wlock=<Lock(_semlock=<_multiprocessing.SemLock at remote 0x103078c08>, acquire=<built-in method acquire of _multiprocessing.SemLock object at remote 0x103078c08>, release=<built-in method release of _multiprocessing.SemLock object at remote 0x103078c08>) at remote 0x10306df50>) at remote 0x101f50530>, [<ForkProcess(_identity=(1,), _config={'authkey': <Authenticat...(truncated), args=(), kwargs=0x0) at Objects/call.c:904
#29 0x000000010004b5bd in method_call (method=<method at remote 0x101ec2bb0>, args=(), kwargs=0x0)
at Objects/classobject.c:306
#30 0x0000000100045a02 in PyObject_Call (callable=<method at remote 0x101ec2bb0>, args=(),
kwargs=0x0) at Objects/call.c:245
#31 0x0000000100349e16 in t_bootstrap (boot_raw=0x10303dd30) at ./Modules/_threadmodule.c:992
#32 0x00007fff87a53268 in _pthread_body () from /usr/lib/system/libsystem_pthread.dylib
#33 0x00007fff87a531e5 in _pthread_start () from /usr/lib/system/libsystem_pthread.dylib
#34 0x00007fff87a5141d in thread_start () from /usr/lib/system/libsystem_pthread.dylib
#35 0x0000000000000000 in ?? ()
Thanks
----------
nosy: +xtreak
_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34410>
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