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I am trying to execute a pytest script as follows:
python3.7.1 -m pytest test.py
All the tests from test.py are executed and passed but Python 3.7.1 is hanging indefinitely.
I have entered into gdb and taken the following backtrace:
(gdb) bt
#0 sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
#1 0x00007f9010ae5d05 in PyThread_acquire_lock_timed (lock=lock@entry=0x7f8ff4000af0, microseconds=microseconds@entry=-1000000, intr_flag=intr_flag@entry=1) at Python/thread_pthread.h:340
#2 0x00007f9010b333a4 in acquire_timed (timeout=-1000000000, lock=0x7f8ff4000af0) at ./Modules/_threadmodule.c:61
#3 lock_PyThread_acquire_lock (self=0x7f9007137f30, args=<optimized out>, kwds=<optimized out>) at ./Modules/_threadmodule.c:144
#4 0x00007f90109d9c13 in _PyMethodDef_RawFastCallKeywords (method=<optimized out>, self=self@entry=0x7f9007137f30, args=args@entry=0x7f90005741e0, nargs=nargs@entry=2, kwnames=kwnames@entry=0x0)
at Objects/call.c:690
#5 0x00007f90109e28fe in _PyMethodDescr_FastCallKeywords (descrobj=0x7f900fa103a8, args=args@entry=0x7f90005741d8, nargs=nargs@entry=3, kwnames=kwnames@entry=0x0) at Objects/descrobject.c:288
#6 0x00007f90109b6048 in call_function (kwnames=0x0, oparg=3, pp_stack=<synthetic pointer>) at Python/ceval.c:4579
#7 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#8 0x00007f9010aa5e09 in _PyEval_EvalCodeWithName (_co=0x7f900ee08810, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=1, kwnames=0x0, kwargs=kwargs@entry=0x7f90070a9388,
kwcount=0, kwstep=kwstep@entry=1, defs=defs@entry=0x7f900ee0aa20, defcount=defcount@entry=2, kwdefs=kwdefs@entry=0x0, closure=closure@entry=0x0, name=0x7f900ee07810, qualname=0x7f900ee01c60)
at Python/ceval.c:3930
#9 0x00007f90109d96c9 in _PyFunction_FastCallKeywords (func=<optimized out>, stack=<optimized out>, nargs=<optimized out>, kwnames=<optimized out>) at Objects/call.c:433
#10 0x00007f90109b6816 in call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>) at Python/ceval.c:4602
#11 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#12 0x00007f9010aa5e09 in _PyEval_EvalCodeWithName (_co=0x7f900ee08780, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=1, kwnames=0x0, kwargs=kwargs@entry=0x7f8fcd4301d8,
kwcount=0, kwstep=kwstep@entry=1, defs=defs@entry=0x7f900ee0b840, defcount=defcount@entry=1, kwdefs=kwdefs@entry=0x0, closure=closure@entry=0x0, name=0x7f900fa28d50, qualname=0x7f900ee0a4f0)
at Python/ceval.c:3930
#13 0x00007f90109d96c9 in _PyFunction_FastCallKeywords (func=<optimized out>, stack=<optimized out>, nargs=<optimized out>, kwnames=<optimized out>) at Objects/call.c:433
#14 0x00007f90109b6816 in call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>) at Python/ceval.c:4602
#15 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#16 0x00007f90109ad2cb in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, globals=<optimized out>) at Objects/call.c:283
#17 0x00007f90109d97bf in _PyFunction_FastCallKeywords (func=<optimized out>, stack=<optimized out>, nargs=<optimized out>, kwnames=<optimized out>) at Objects/call.c:415
#18 0x00007f90109b6816 in call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>) at Python/ceval.c:4602
#19 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#20 0x00007f90109ad2cb in function_code_fastcall (co=co@entry=0x7f9007c98e40, args=<optimized out>, args@entry=0x7ffead4a50e0, nargs=nargs@entry=1, globals=globals@entry=0x7f9007c7eea0)
at Objects/call.c:283
#21 0x00007f90109d95ff in _PyFunction_FastCallDict (func=0x7f9007e6f2f0, args=0x7ffead4a50e0, nargs=1, kwargs=0x0) at Objects/call.c:322
#22 0x00007f9010a3307a in call_unbound_noarg (self=0x7f9003968ba8, func=0x7f9007e6f2f0, unbound=<optimized out>) at Objects/typeobject.c:1493
#23 call_unbound_noarg (self=0x7f9003968ba8, func=0x7f9007e6f2f0, unbound=1) at Objects/typeobject.c:6645
#24 slot_tp_finalize (self=0x7f9003968ba8) at Objects/typeobject.c:6658
#25 0x00007f9010afc2c9 in finalize_garbage (collectable=0x7ffead4a5170) at Modules/gcmodule.c:703
#26 collect (generation=generation@entry=2, n_collected=n_collected@entry=0x0, n_uncollectable=n_uncollectable@entry=0x0, nofail=nofail@entry=1) at Modules/gcmodule.c:905
#27 0x00007f9010afcf1d in _PyGC_CollectNoFail () at Modules/gcmodule.c:1605
#28 0x00007f9010ac3a82 in PyImport_Cleanup () at Python/import.c:526
#29 0x00007f9010ad0098 in Py_FinalizeEx () at Python/pylifecycle.c:1192
#30 Py_FinalizeEx () at Python/pylifecycle.c:1117
#31 0x00007f9010ad0878 in Py_Exit (sts=sts@entry=0) at Python/pylifecycle.c:2250
#32 0x00007f9010ad9d91 in handle_system_exit () at Python/pythonrun.c:636
#33 0x00007f9010ada116 in handle_system_exit () at Python/pythonrun.c:588
#34 PyErr_PrintEx (set_sys_last_vars=set_sys_last_vars@entry=1) at Python/pythonrun.c:646
#35 0x00007f9010ada35a in PyErr_Print () at Python/pythonrun.c:542
#36 0x00007f9010af602d in pymain_run_module (modname=<optimized out>, set_argv0=set_argv0@entry=1) at Modules/main.c:322
#37 0x00007f9010af6374 in pymain_run_python (pymain=pymain@entry=0x7ffead4a5550) at Modules/main.c:2623
#38 0x00007f9010afb128 in pymain_main (pymain=0x7ffead4a5550) at Modules/main.c:2787
#39 _Py_UnixMain (argc=<optimized out>, argv=<optimized out>) at Modules/main.c:2822
#40 0x00007f900fa84715 in __libc_start_main (main=0x400720 <main>, argc=4, ubp_av=0x7ffead4a56a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffead4a5698)
at libc-start.c:225
#41 0x0000000000400751 in _start ()
(gdb) info threads
Id Target Id Frame
2 Thread 0x7f9002ef0700 (LWP 1124) "python3.7.1" sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
* 1 Thread 0x7f90112c2700 (LWP 1048) "python3.7.1" sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
(gdb)
I couldn't understand why my program is hanging. Can you please help me in understanding the above stack trace?
python3
edited 22 hours ago
Anaksunaman
5,92321423
asked yesterday
Amresh SajjanshettyAmresh Sajjanshetty
1
New contributor
Amresh Sajjanshetty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
0
I am trying to execute a pytest script as follows:
python3.7.1 -m pytest test.py
All the tests from test.py are executed and passed but Python 3.7.1 is hanging indefinitely.
I have entered into gdb and taken the following backtrace:
(gdb) bt
#0 sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
#1 0x00007f9010ae5d05 in PyThread_acquire_lock_timed (lock=lock@entry=0x7f8ff4000af0, microseconds=microseconds@entry=-1000000, intr_flag=intr_flag@entry=1) at Python/thread_pthread.h:340
#2 0x00007f9010b333a4 in acquire_timed (timeout=-1000000000, lock=0x7f8ff4000af0) at ./Modules/_threadmodule.c:61
#3 lock_PyThread_acquire_lock (self=0x7f9007137f30, args=<optimized out>, kwds=<optimized out>) at ./Modules/_threadmodule.c:144
#4 0x00007f90109d9c13 in _PyMethodDef_RawFastCallKeywords (method=<optimized out>, self=self@entry=0x7f9007137f30, args=args@entry=0x7f90005741e0, nargs=nargs@entry=2, kwnames=kwnames@entry=0x0)
at Objects/call.c:690
#5 0x00007f90109e28fe in _PyMethodDescr_FastCallKeywords (descrobj=0x7f900fa103a8, args=args@entry=0x7f90005741d8, nargs=nargs@entry=3, kwnames=kwnames@entry=0x0) at Objects/descrobject.c:288
#6 0x00007f90109b6048 in call_function (kwnames=0x0, oparg=3, pp_stack=<synthetic pointer>) at Python/ceval.c:4579
#7 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#8 0x00007f9010aa5e09 in _PyEval_EvalCodeWithName (_co=0x7f900ee08810, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=1, kwnames=0x0, kwargs=kwargs@entry=0x7f90070a9388,
kwcount=0, kwstep=kwstep@entry=1, defs=defs@entry=0x7f900ee0aa20, defcount=defcount@entry=2, kwdefs=kwdefs@entry=0x0, closure=closure@entry=0x0, name=0x7f900ee07810, qualname=0x7f900ee01c60)
at Python/ceval.c:3930
#9 0x00007f90109d96c9 in _PyFunction_FastCallKeywords (func=<optimized out>, stack=<optimized out>, nargs=<optimized out>, kwnames=<optimized out>) at Objects/call.c:433
#10 0x00007f90109b6816 in call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>) at Python/ceval.c:4602
#11 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#12 0x00007f9010aa5e09 in _PyEval_EvalCodeWithName (_co=0x7f900ee08780, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=1, kwnames=0x0, kwargs=kwargs@entry=0x7f8fcd4301d8,
kwcount=0, kwstep=kwstep@entry=1, defs=defs@entry=0x7f900ee0b840, defcount=defcount@entry=1, kwdefs=kwdefs@entry=0x0, closure=closure@entry=0x0, name=0x7f900fa28d50, qualname=0x7f900ee0a4f0)
at Python/ceval.c:3930
#13 0x00007f90109d96c9 in _PyFunction_FastCallKeywords (func=<optimized out>, stack=<optimized out>, nargs=<optimized out>, kwnames=<optimized out>) at Objects/call.c:433
#14 0x00007f90109b6816 in call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>) at Python/ceval.c:4602
#15 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#16 0x00007f90109ad2cb in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, globals=<optimized out>) at Objects/call.c:283
#17 0x00007f90109d97bf in _PyFunction_FastCallKeywords (func=<optimized out>, stack=<optimized out>, nargs=<optimized out>, kwnames=<optimized out>) at Objects/call.c:415
#18 0x00007f90109b6816 in call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>) at Python/ceval.c:4602
#19 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#20 0x00007f90109ad2cb in function_code_fastcall (co=co@entry=0x7f9007c98e40, args=<optimized out>, args@entry=0x7ffead4a50e0, nargs=nargs@entry=1, globals=globals@entry=0x7f9007c7eea0)
at Objects/call.c:283
#21 0x00007f90109d95ff in _PyFunction_FastCallDict (func=0x7f9007e6f2f0, args=0x7ffead4a50e0, nargs=1, kwargs=0x0) at Objects/call.c:322
#22 0x00007f9010a3307a in call_unbound_noarg (self=0x7f9003968ba8, func=0x7f9007e6f2f0, unbound=<optimized out>) at Objects/typeobject.c:1493
#23 call_unbound_noarg (self=0x7f9003968ba8, func=0x7f9007e6f2f0, unbound=1) at Objects/typeobject.c:6645
#24 slot_tp_finalize (self=0x7f9003968ba8) at Objects/typeobject.c:6658
#25 0x00007f9010afc2c9 in finalize_garbage (collectable=0x7ffead4a5170) at Modules/gcmodule.c:703
#26 collect (generation=generation@entry=2, n_collected=n_collected@entry=0x0, n_uncollectable=n_uncollectable@entry=0x0, nofail=nofail@entry=1) at Modules/gcmodule.c:905
#27 0x00007f9010afcf1d in _PyGC_CollectNoFail () at Modules/gcmodule.c:1605
#28 0x00007f9010ac3a82 in PyImport_Cleanup () at Python/import.c:526
#29 0x00007f9010ad0098 in Py_FinalizeEx () at Python/pylifecycle.c:1192
#30 Py_FinalizeEx () at Python/pylifecycle.c:1117
#31 0x00007f9010ad0878 in Py_Exit (sts=sts@entry=0) at Python/pylifecycle.c:2250
#32 0x00007f9010ad9d91 in handle_system_exit () at Python/pythonrun.c:636
#33 0x00007f9010ada116 in handle_system_exit () at Python/pythonrun.c:588
#34 PyErr_PrintEx (set_sys_last_vars=set_sys_last_vars@entry=1) at Python/pythonrun.c:646
#35 0x00007f9010ada35a in PyErr_Print () at Python/pythonrun.c:542
#36 0x00007f9010af602d in pymain_run_module (modname=<optimized out>, set_argv0=set_argv0@entry=1) at Modules/main.c:322
#37 0x00007f9010af6374 in pymain_run_python (pymain=pymain@entry=0x7ffead4a5550) at Modules/main.c:2623
#38 0x00007f9010afb128 in pymain_main (pymain=0x7ffead4a5550) at Modules/main.c:2787
#39 _Py_UnixMain (argc=<optimized out>, argv=<optimized out>) at Modules/main.c:2822
#40 0x00007f900fa84715 in __libc_start_main (main=0x400720 <main>, argc=4, ubp_av=0x7ffead4a56a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffead4a5698)
at libc-start.c:225
#41 0x0000000000400751 in _start ()
(gdb) info threads
Id Target Id Frame
2 Thread 0x7f9002ef0700 (LWP 1124) "python3.7.1" sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
* 1 Thread 0x7f90112c2700 (LWP 1048) "python3.7.1" sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
(gdb)
I couldn't understand why my program is hanging. Can you please help me in understanding the above stack trace?
python3
edited 22 hours ago
Anaksunaman
5,92321423
asked yesterday
Amresh SajjanshettyAmresh Sajjanshetty
1
New contributor
Amresh Sajjanshetty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
0
0
0
I am trying to execute a pytest script as follows:
python3.7.1 -m pytest test.py
All the tests from test.py are executed and passed but Python 3.7.1 is hanging indefinitely.
I have entered into gdb and taken the following backtrace:
(gdb) bt
#0 sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
#1 0x00007f9010ae5d05 in PyThread_acquire_lock_timed (lock=lock@entry=0x7f8ff4000af0, microseconds=microseconds@entry=-1000000, intr_flag=intr_flag@entry=1) at Python/thread_pthread.h:340
#2 0x00007f9010b333a4 in acquire_timed (timeout=-1000000000, lock=0x7f8ff4000af0) at ./Modules/_threadmodule.c:61
#3 lock_PyThread_acquire_lock (self=0x7f9007137f30, args=<optimized out>, kwds=<optimized out>) at ./Modules/_threadmodule.c:144
#4 0x00007f90109d9c13 in _PyMethodDef_RawFastCallKeywords (method=<optimized out>, self=self@entry=0x7f9007137f30, args=args@entry=0x7f90005741e0, nargs=nargs@entry=2, kwnames=kwnames@entry=0x0)
at Objects/call.c:690
#5 0x00007f90109e28fe in _PyMethodDescr_FastCallKeywords (descrobj=0x7f900fa103a8, args=args@entry=0x7f90005741d8, nargs=nargs@entry=3, kwnames=kwnames@entry=0x0) at Objects/descrobject.c:288
#6 0x00007f90109b6048 in call_function (kwnames=0x0, oparg=3, pp_stack=<synthetic pointer>) at Python/ceval.c:4579
#7 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#8 0x00007f9010aa5e09 in _PyEval_EvalCodeWithName (_co=0x7f900ee08810, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=1, kwnames=0x0, kwargs=kwargs@entry=0x7f90070a9388,
kwcount=0, kwstep=kwstep@entry=1, defs=defs@entry=0x7f900ee0aa20, defcount=defcount@entry=2, kwdefs=kwdefs@entry=0x0, closure=closure@entry=0x0, name=0x7f900ee07810, qualname=0x7f900ee01c60)
at Python/ceval.c:3930
#9 0x00007f90109d96c9 in _PyFunction_FastCallKeywords (func=<optimized out>, stack=<optimized out>, nargs=<optimized out>, kwnames=<optimized out>) at Objects/call.c:433
#10 0x00007f90109b6816 in call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>) at Python/ceval.c:4602
#11 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#12 0x00007f9010aa5e09 in _PyEval_EvalCodeWithName (_co=0x7f900ee08780, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=1, kwnames=0x0, kwargs=kwargs@entry=0x7f8fcd4301d8,
kwcount=0, kwstep=kwstep@entry=1, defs=defs@entry=0x7f900ee0b840, defcount=defcount@entry=1, kwdefs=kwdefs@entry=0x0, closure=closure@entry=0x0, name=0x7f900fa28d50, qualname=0x7f900ee0a4f0)
at Python/ceval.c:3930
#13 0x00007f90109d96c9 in _PyFunction_FastCallKeywords (func=<optimized out>, stack=<optimized out>, nargs=<optimized out>, kwnames=<optimized out>) at Objects/call.c:433
#14 0x00007f90109b6816 in call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>) at Python/ceval.c:4602
#15 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#16 0x00007f90109ad2cb in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, globals=<optimized out>) at Objects/call.c:283
#17 0x00007f90109d97bf in _PyFunction_FastCallKeywords (func=<optimized out>, stack=<optimized out>, nargs=<optimized out>, kwnames=<optimized out>) at Objects/call.c:415
#18 0x00007f90109b6816 in call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>) at Python/ceval.c:4602
#19 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#20 0x00007f90109ad2cb in function_code_fastcall (co=co@entry=0x7f9007c98e40, args=<optimized out>, args@entry=0x7ffead4a50e0, nargs=nargs@entry=1, globals=globals@entry=0x7f9007c7eea0)
at Objects/call.c:283
#21 0x00007f90109d95ff in _PyFunction_FastCallDict (func=0x7f9007e6f2f0, args=0x7ffead4a50e0, nargs=1, kwargs=0x0) at Objects/call.c:322
#22 0x00007f9010a3307a in call_unbound_noarg (self=0x7f9003968ba8, func=0x7f9007e6f2f0, unbound=<optimized out>) at Objects/typeobject.c:1493
#23 call_unbound_noarg (self=0x7f9003968ba8, func=0x7f9007e6f2f0, unbound=1) at Objects/typeobject.c:6645
#24 slot_tp_finalize (self=0x7f9003968ba8) at Objects/typeobject.c:6658
#25 0x00007f9010afc2c9 in finalize_garbage (collectable=0x7ffead4a5170) at Modules/gcmodule.c:703
#26 collect (generation=generation@entry=2, n_collected=n_collected@entry=0x0, n_uncollectable=n_uncollectable@entry=0x0, nofail=nofail@entry=1) at Modules/gcmodule.c:905
#27 0x00007f9010afcf1d in _PyGC_CollectNoFail () at Modules/gcmodule.c:1605
#28 0x00007f9010ac3a82 in PyImport_Cleanup () at Python/import.c:526
#29 0x00007f9010ad0098 in Py_FinalizeEx () at Python/pylifecycle.c:1192
#30 Py_FinalizeEx () at Python/pylifecycle.c:1117
#31 0x00007f9010ad0878 in Py_Exit (sts=sts@entry=0) at Python/pylifecycle.c:2250
#32 0x00007f9010ad9d91 in handle_system_exit () at Python/pythonrun.c:636
#33 0x00007f9010ada116 in handle_system_exit () at Python/pythonrun.c:588
#34 PyErr_PrintEx (set_sys_last_vars=set_sys_last_vars@entry=1) at Python/pythonrun.c:646
#35 0x00007f9010ada35a in PyErr_Print () at Python/pythonrun.c:542
#36 0x00007f9010af602d in pymain_run_module (modname=<optimized out>, set_argv0=set_argv0@entry=1) at Modules/main.c:322
#37 0x00007f9010af6374 in pymain_run_python (pymain=pymain@entry=0x7ffead4a5550) at Modules/main.c:2623
#38 0x00007f9010afb128 in pymain_main (pymain=0x7ffead4a5550) at Modules/main.c:2787
#39 _Py_UnixMain (argc=<optimized out>, argv=<optimized out>) at Modules/main.c:2822
#40 0x00007f900fa84715 in __libc_start_main (main=0x400720 <main>, argc=4, ubp_av=0x7ffead4a56a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffead4a5698)
at libc-start.c:225
#41 0x0000000000400751 in _start ()
(gdb) info threads
Id Target Id Frame
2 Thread 0x7f9002ef0700 (LWP 1124) "python3.7.1" sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
* 1 Thread 0x7f90112c2700 (LWP 1048) "python3.7.1" sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
(gdb)
I couldn't understand why my program is hanging. Can you please help me in understanding the above stack trace?
python3
edited 22 hours ago
Anaksunaman
5,92321423
asked yesterday
Amresh SajjanshettyAmresh Sajjanshetty
1
New contributor
Amresh Sajjanshetty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I am trying to execute a pytest script as follows:
python3.7.1 -m pytest test.py
All the tests from test.py are executed and passed but Python 3.7.1 is hanging indefinitely.
I have entered into gdb and taken the following backtrace:
(gdb) bt
#0 sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
#1 0x00007f9010ae5d05 in PyThread_acquire_lock_timed (lock=lock@entry=0x7f8ff4000af0, microseconds=microseconds@entry=-1000000, intr_flag=intr_flag@entry=1) at Python/thread_pthread.h:340
#2 0x00007f9010b333a4 in acquire_timed (timeout=-1000000000, lock=0x7f8ff4000af0) at ./Modules/_threadmodule.c:61
#3 lock_PyThread_acquire_lock (self=0x7f9007137f30, args=<optimized out>, kwds=<optimized out>) at ./Modules/_threadmodule.c:144
#4 0x00007f90109d9c13 in _PyMethodDef_RawFastCallKeywords (method=<optimized out>, self=self@entry=0x7f9007137f30, args=args@entry=0x7f90005741e0, nargs=nargs@entry=2, kwnames=kwnames@entry=0x0)
at Objects/call.c:690
#5 0x00007f90109e28fe in _PyMethodDescr_FastCallKeywords (descrobj=0x7f900fa103a8, args=args@entry=0x7f90005741d8, nargs=nargs@entry=3, kwnames=kwnames@entry=0x0) at Objects/descrobject.c:288
#6 0x00007f90109b6048 in call_function (kwnames=0x0, oparg=3, pp_stack=<synthetic pointer>) at Python/ceval.c:4579
#7 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#8 0x00007f9010aa5e09 in _PyEval_EvalCodeWithName (_co=0x7f900ee08810, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=1, kwnames=0x0, kwargs=kwargs@entry=0x7f90070a9388,
kwcount=0, kwstep=kwstep@entry=1, defs=defs@entry=0x7f900ee0aa20, defcount=defcount@entry=2, kwdefs=kwdefs@entry=0x0, closure=closure@entry=0x0, name=0x7f900ee07810, qualname=0x7f900ee01c60)
at Python/ceval.c:3930
#9 0x00007f90109d96c9 in _PyFunction_FastCallKeywords (func=<optimized out>, stack=<optimized out>, nargs=<optimized out>, kwnames=<optimized out>) at Objects/call.c:433
#10 0x00007f90109b6816 in call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>) at Python/ceval.c:4602
#11 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#12 0x00007f9010aa5e09 in _PyEval_EvalCodeWithName (_co=0x7f900ee08780, globals=<optimized out>, locals=locals@entry=0x0, args=<optimized out>, argcount=1, kwnames=0x0, kwargs=kwargs@entry=0x7f8fcd4301d8,
kwcount=0, kwstep=kwstep@entry=1, defs=defs@entry=0x7f900ee0b840, defcount=defcount@entry=1, kwdefs=kwdefs@entry=0x0, closure=closure@entry=0x0, name=0x7f900fa28d50, qualname=0x7f900ee0a4f0)
at Python/ceval.c:3930
#13 0x00007f90109d96c9 in _PyFunction_FastCallKeywords (func=<optimized out>, stack=<optimized out>, nargs=<optimized out>, kwnames=<optimized out>) at Objects/call.c:433
#14 0x00007f90109b6816 in call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>) at Python/ceval.c:4602
#15 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#16 0x00007f90109ad2cb in function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=1, globals=<optimized out>) at Objects/call.c:283
#17 0x00007f90109d97bf in _PyFunction_FastCallKeywords (func=<optimized out>, stack=<optimized out>, nargs=<optimized out>, kwnames=<optimized out>) at Objects/call.c:415
#18 0x00007f90109b6816 in call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>) at Python/ceval.c:4602
#19 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:3110
#20 0x00007f90109ad2cb in function_code_fastcall (co=co@entry=0x7f9007c98e40, args=<optimized out>, args@entry=0x7ffead4a50e0, nargs=nargs@entry=1, globals=globals@entry=0x7f9007c7eea0)
at Objects/call.c:283
#21 0x00007f90109d95ff in _PyFunction_FastCallDict (func=0x7f9007e6f2f0, args=0x7ffead4a50e0, nargs=1, kwargs=0x0) at Objects/call.c:322
#22 0x00007f9010a3307a in call_unbound_noarg (self=0x7f9003968ba8, func=0x7f9007e6f2f0, unbound=<optimized out>) at Objects/typeobject.c:1493
#23 call_unbound_noarg (self=0x7f9003968ba8, func=0x7f9007e6f2f0, unbound=1) at Objects/typeobject.c:6645
#24 slot_tp_finalize (self=0x7f9003968ba8) at Objects/typeobject.c:6658
#25 0x00007f9010afc2c9 in finalize_garbage (collectable=0x7ffead4a5170) at Modules/gcmodule.c:703
#26 collect (generation=generation@entry=2, n_collected=n_collected@entry=0x0, n_uncollectable=n_uncollectable@entry=0x0, nofail=nofail@entry=1) at Modules/gcmodule.c:905
#27 0x00007f9010afcf1d in _PyGC_CollectNoFail () at Modules/gcmodule.c:1605
#28 0x00007f9010ac3a82 in PyImport_Cleanup () at Python/import.c:526
#29 0x00007f9010ad0098 in Py_FinalizeEx () at Python/pylifecycle.c:1192
#30 Py_FinalizeEx () at Python/pylifecycle.c:1117
#31 0x00007f9010ad0878 in Py_Exit (sts=sts@entry=0) at Python/pylifecycle.c:2250
#32 0x00007f9010ad9d91 in handle_system_exit () at Python/pythonrun.c:636
#33 0x00007f9010ada116 in handle_system_exit () at Python/pythonrun.c:588
#34 PyErr_PrintEx (set_sys_last_vars=set_sys_last_vars@entry=1) at Python/pythonrun.c:646
#35 0x00007f9010ada35a in PyErr_Print () at Python/pythonrun.c:542
#36 0x00007f9010af602d in pymain_run_module (modname=<optimized out>, set_argv0=set_argv0@entry=1) at Modules/main.c:322
#37 0x00007f9010af6374 in pymain_run_python (pymain=pymain@entry=0x7ffead4a5550) at Modules/main.c:2623
#38 0x00007f9010afb128 in pymain_main (pymain=0x7ffead4a5550) at Modules/main.c:2787
#39 _Py_UnixMain (argc=<optimized out>, argv=<optimized out>) at Modules/main.c:2822
#40 0x00007f900fa84715 in __libc_start_main (main=0x400720 <main>, argc=4, ubp_av=0x7ffead4a56a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffead4a5698)
at libc-start.c:225
#41 0x0000000000400751 in _start ()
(gdb) info threads
Id Target Id Frame
2 Thread 0x7f9002ef0700 (LWP 1124) "python3.7.1" sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
* 1 Thread 0x7f90112c2700 (LWP 1048) "python3.7.1" sem_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S:85
(gdb)
I couldn't understand why my program is hanging. Can you please help me in understanding the above stack trace?
python3
python3
edited 22 hours ago
Anaksunaman
5,92321423
asked yesterday
Amresh SajjanshettyAmresh Sajjanshetty
1
New contributor
Amresh Sajjanshetty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 22 hours ago
Anaksunaman
5,92321423
asked yesterday
Amresh SajjanshettyAmresh Sajjanshetty
1
New contributor
Amresh Sajjanshetty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 22 hours ago
Anaksunaman
5,92321423
edited 22 hours ago
Anaksunaman
5,92321423
edited 22 hours ago
Anaksunaman
5,92321423
5,92321423
asked yesterday
Amresh SajjanshettyAmresh Sajjanshetty
1
New contributor
Amresh Sajjanshetty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked yesterday
Amresh SajjanshettyAmresh Sajjanshetty
1
asked yesterday
Amresh SajjanshettyAmresh Sajjanshetty
1
1
New contributor
Amresh Sajjanshetty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Amresh Sajjanshetty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Amresh Sajjanshetty is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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