#0  __lll_lock_wait_private (futex=0x7fe2d0000020) at ./lowlevellock.c:35
#1  0x00007fe36638a049 in __malloc_fork_lock_parent () at arena.c:156
#2  0x00007fe3663d31aa in __libc_fork () at ../sysdeps/nptl/fork.c:73
#3  0x000000000065d360 in ?? ()
#4  0x00000000005f42ea in PyCFunction_Call ()
#5  0x00000000005f46d6 in _PyObject_MakeTpCall ()
#6  0x0000000000570936 in _PyEval_EvalFrameDefault ()
#7  0x000000000056955a in _PyEval_EvalCodeWithName ()
#8  0x00000000005f7323 in _PyFunction_Vectorcall ()
#9  0x000000000056b399 in _PyEval_EvalFrameDefault ()
#10 0x000000000056955a in _PyEval_EvalCodeWithName ()
#11 0x00000000005f7323 in _PyFunction_Vectorcall ()
#12 0x000000000059c6f0 in ?? ()
#13 0x00000000005f463f in _PyObject_MakeTpCall ()
#14 0x0000000000570dac in _PyEval_EvalFrameDefault ()
#15 0x000000000056955a in _PyEval_EvalCodeWithName ()
#16 0x00000000005f7323 in _PyFunction_Vectorcall ()
#17 0x00000000005f6e27 in PyObject_CallObject ()
#18 0x00007fe3657a73ab in ?? () from target:/usr/lib/python3.8/lib-dynload/_ctypes.cpython-38-x86_64-linux-gnu.so
#19 0x00007fe365794e06 in ?? () from target:/lib/x86_64-linux-gnu/libffi.so.7
#20 0x00007fe365795188 in ?? () from target:/lib/x86_64-linux-gnu/libffi.so.7
#21 0x00007fe36640f293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
#0  __lll_lock_wait_private (futex=0x7fe2d0000020) at ./lowlevellock.c:35
        __ret = <optimized out>
#1  0x00007fe36638a049 in __malloc_fork_lock_parent () at arena.c:156
        __futex = 0x7fe2d0000020
        ar_ptr = 0x7fe2d0000020
#2  0x00007fe3663d31aa in __libc_fork () at ../sysdeps/nptl/fork.c:73
        pid = <optimized out>
        multiple_threads = true
#3  0x000000000065d360 in ?? ()
No symbol table info available.
#4  0x00000000005f42ea in PyCFunction_Call ()
No symbol table info available.
#5  0x00000000005f46d6 in _PyObject_MakeTpCall ()
No symbol table info available.
#6  0x0000000000570936 in _PyEval_EvalFrameDefault ()
No symbol table info available.
#7  0x000000000056955a in _PyEval_EvalCodeWithName ()
No symbol table info available.
#8  0x00000000005f7323 in _PyFunction_Vectorcall ()
No symbol table info available.
#9  0x000000000056b399 in _PyEval_EvalFrameDefault ()
No symbol table info available.
#10 0x000000000056955a in _PyEval_EvalCodeWithName ()
No symbol table info available.
#11 0x00000000005f7323 in _PyFunction_Vectorcall ()
No symbol table info available.
#12 0x000000000059c6f0 in ?? ()
No symbol table info available.
#13 0x00000000005f463f in _PyObject_MakeTpCall ()
No symbol table info available.
#14 0x0000000000570dac in _PyEval_EvalFrameDefault ()
No symbol table info available.
#15 0x000000000056955a in _PyEval_EvalCodeWithName ()
No symbol table info available.
#16 0x00000000005f7323 in _PyFunction_Vectorcall ()
No symbol table info available.
#17 0x00000000005f6e27 in PyObject_CallObject ()
No symbol table info available.
#18 0x00007fe3657a73ab in ?? () from target:/usr/lib/python3.8/lib-dynload/_ctypes.cpython-38-x86_64-linux-gnu.so
No symbol table info available.
#19 0x00007fe365794e06 in ?? () from target:/lib/x86_64-linux-gnu/libffi.so.7
No symbol table info available.
#20 0x00007fe365795188 in ?? () from target:/lib/x86_64-linux-gnu/libffi.so.7
No symbol table info available.
#21 0x00007fe36640f293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
quit
Detaching from program: target:/usr/bin/python3.8, process 282857
[Inferior 1 (process 282857) detached]