(gdb) bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:49
#1  0x00007fcf164aa8a4 in __GI_abort () at abort.c:79
#2  0x00007fcf084bd5f5 in nbd_internal_py_aio_connect (self=<optimized out>, 
    args=<optimized out>)
    at /usr/src/debug/libnbd-1.8.0-2.fc35.x86_64/python/methods.c:2554
#3  0x00007fcf167681e8 in cfunction_call (func=0x7fcf089cdd50, 
    args=<optimized out>, kwargs=<optimized out>)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Objects/methodobject.c:548
#4  0x00007fcf16763dc4 in _PyObject_MakeTpCall (tstate=0x55958608b7e0, 
    callable=0x7fcf089cdd50, args=0x7fcf08b64ee0, nargs=2, keywords=0x0)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Objects/call.c:215
#5  0x00007fcf16760d03 in _PyObject_VectorcallTstate (kwnames=0x0, 
    nargsf=<optimized out>, args=0x7fcf08b64ee0, callable=<optimized out>, 
    tstate=0x55958608b7e0)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Include/cpython/abstract.h:112
#6  _PyObject_VectorcallTstate (kwnames=0x0, nargsf=<optimized out>, 
    args=0x7fcf08b64ee0, callable=<optimized out>, tstate=0x55958608b7e0)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Include/cpython/abstract.h:99
#7  PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, 
    args=0x7fcf08b64ee0, callable=<optimized out>)
--Type <RET> for more, q to quit, c to continue without paging--
   3.10.0~b2-3.fc35.x86_64/Include/cpython/abstract.h:123
#8  call_function (kwnames=0x0, oparg=<optimized out>, 
    pp_stack=<synthetic pointer>, trace_info=0x7ffc3a7f1b60, 
    tstate=<optimized out>)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Python/ceval.c:5885
#9  _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, 
    throwflag=<optimized out>)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Python/ceval.c:4182
#10 0x00007fcf16759ec4 in _PyEval_EvalFrame (throwflag=0, f=0x7fcf08b64d60, 
    tstate=0x55958608b7e0)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Include/internal/pycore_ceval.h:46
#11 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=2, 
    kwnames=<optimized out>)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Python/ceval.c:5069
#12 0x00007fcf1675b28e in _PyObject_VectorcallTstate (kwnames=0x0, 
    nargsf=<optimized out>, args=0x7fcf08d09ba8, callable=0x7fcf089d2dd0, 
    tstate=0x55958608b7e0)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Include/cpython/abstract.h:114
#13 PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, 
    args=0x7fcf08d09ba8, callable=0x7fcf089d2dd0)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Include/cpython/abstract.h:123
#14 call_function (kwnames=0x0, oparg=<optimized out>, 
    pp_stack=<synthetic pointer>, trace_info=0x7ffc3a7f1db0, 
    tstate=<optimized out>)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Python/ceval.c:5885
#15 _PyEval_EvalFrameDefault (tstate=<optimized out>, f=<optimized out>, 
    throwflag=<optimized out>)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Python/ceval.c:4199
#16 0x00007fcf16759ec4 in _PyEval_EvalFrame (throwflag=0, f=0x7fcf08d09a40, 
    tstate=0x55958608b7e0)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Include/internal/pycore_ceval.h:46
#17 _PyEval_Vector (tstate=<optimized out>, con=<optimized out>, 
    locals=<optimized out>, args=<optimized out>, argcount=0, 
    kwnames=<optimized out>)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Python/ceval.c:5069
#18 0x00007fcf167d42b4 in PyEval_EvalCode (co=0x7fcf08c1f7e0, 
    globals=0x7fcf08c21cc0, locals=<optimized out>)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Python/ceval.c:1135
#19 0x00007fcf16803944 in run_eval_code_obj (tstate=0x55958608b7e0, 
    co=0x7fcf08c1f7e0, globals=0x7fcf08c21cc0, locals=0x7fcf08c21cc0)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Python/pythonrun.c:1289
#20 0x00007fcf167fefd6 in run_mod (mod=<optimized out>, 
    filename=<optimized out>, globals=0x7fcf08c21cc0, locals=0x7fcf08c21cc0, 
    flags=<optimized out>, arena=<optimized out>)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Python/pythonrun.c:1310--Type <RET> for more, q to quit, c to continue without paging--

#21 0x00007fcf166d8c9f in pyrun_file (fp=<optimized out>, 
    filename=<optimized out>, start=<optimized out>, globals=<optimized out>, 
    locals=<optimized out>, closeit=<optimized out>, flags=0x7ffc3a7f2158)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Python/pythonrun.c:1206
#22 0x00007fcf167f9cc2 in _PyRun_SimpleFileObject (fp=0x5595860903d0, 
    filename=0x7fcf08c0fa00, closeit=1, flags=0x7ffc3a7f2158)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Python/pythonrun.c:455
#23 0x00007fcf167f99c7 in _PyRun_AnyFileObject (fp=0x5595860903d0, 
    filename=0x7fcf08c0fa00, closeit=1, flags=0x7ffc3a7f2158)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Python/pythonrun.c:89
#24 0x00007fcf167f6c34 in pymain_run_file_obj (skip_source_first_line=0, 
    filename=0x7fcf08c0fa00, program_name=0x7fcf08cd29c0)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Modules/main.c:353
#25 pymain_run_file (config=0x55958606fd60)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Modules/main.c:372
#26 pymain_run_python (exitcode=0x7ffc3a7f2150)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Modules/main.c:587
#27 Py_RunMain ()
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Modules/main.c:666
#28 0x00007fcf167c54dd in Py_BytesMain (argc=<optimized out>, 
    argv=<optimized out>)
    at /usr/src/debug/python3.10-3.10.0~b2-3.fc35.x86_64/Modules/main.c:720
#29 0x00007fcf164abb75 in __libc_start_main (main=0x559585dfe160 <main>, 
    argc=2, argv=0x7ffc3a7f2368, init=<optimized out>, fini=<optimized out>, 
    rtld_fini=<optimized out>, stack_end=0x7ffc3a7f2358)
    at ../csu/libc-start.c:332
#30 0x0000559585dfe09e in _start ()