Re: [Discuss-gnuradio] uhd_fft segfault

[Martin Braun]

Those swig traces are hard to parse, but you might have to rebuild GNU
Radio against the current UHD build. Did you install both via Pybombs?

M

On 02/16/2015 09:09 PM, Ergeerts Glenn wrote:
> Hi,
> 
> I'm new to SDR and gnuradio and trying to get started with an USRP B200 
> and gnuradio on ubuntu 14.04.
> I'm using pybombs (up-to-date) for building. Building succeeds but i get 
> a segfault when running uhd_fft.
> The backtrace is below.
> 
> I checked if the correct libuhd was being used (with ldd),instead of an 
> old version from an ubuntu package.
> I also tried uhd_find_devices (which uses pure uhd if i'm correct, 
> without gnuradio?), this works fine.
> Running "pybombs verify gnuradio" results in:
> The following tests FAILED:
>          183 - qa_uhd (Failed)
>          192 - qa_fcd (Failed)
> Errors while running CT
> 
> Running gnuradio/gr-uhd/python/uhd/qa_uhd.py in gdb segfaults with a 
> similar backtrace as well.
> Finally, i tried changing the gnuradio recipe to use the maint branch 
> instead of master.
> Rebuilding (after cleaning the build dir) results in the same situation 
> however.
> 
> I don't know where to look next. Did anyone experience the same problem?
> Thanks for any pointers!
> 
> 
> (gdb) bt
> #0  0x000000000001e626 in ?? ()
> #1  0x00007ffff079d3a0 in strstr (__needle=0x7ffff082bfca "swig_ptr: ", 
> __haystack=0xd9398 <error: Cannot access memory at address 0xd9398>) at 
> /usr/include/string.h:337
> #2  SWIG_Python_FixMethods (methods=0x7ffff0a57380 <SwigMethods>, 
> const_table=0x7ffff0a5d920 <swig_const_table>, types=0x7ffff0a5d980 
> <swig_types>,
>      types_initial=0x7ffff0a55a20 <swig_type_initial>) at 
> /home/glenn/projects/pybombs/src/gnuradio/build/gr-uhd/swig/uhd_swigPYTHON_wrap.cxx:47200
> #3  init_uhd_swig () at 
> /home/glenn/projects/pybombs/src/gnuradio/build/gr-uhd/swig/uhd_swigPYTHON_wrap.cxx:47321
> #4  0x00000000004268bc in _PyImport_LoadDynamicModule 
> (name=0x7ffff1cccd74 "_uhd_swig",
>      pathname=0x7fffed3fa48c 
> "/home/glenn/bin/gnuradio/lib/python2.7/dist-packages/gnuradio/uhd/_uhd_swig.so",
>  
> fp=<optimized out>) at ../Python/importdl.c:53
> #5  0x00000000005b75d1 in load_module.39237 (name=<optimized out>, 
> fp=<optimized out>, pathname=<optimized out>, type=<optimized out>, 
> address@hidden)
>      at ../Python/import.c:1915
> #6  0x000000000046232a in imp_load_module.39244 (self=<optimized out>, 
> args=<optimized out>) at ../Python/import.c:3182
> #7  0x000000000052c6d5 in call_function (oparg=<optimized out>, 
> pp_stack=0x7fffffffc170) at ../Python/ceval.c:4020
> #8  PyEval_EvalFrameEx (address@hidden
>      Frame 0x7ffff2182a50, for file 
> /home/glenn/bin/gnuradio/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py,
>  
> line 24, in swig_import_helper (dirname=<function at remote 
> 0x7ffff7f0f578>, imp=<module at remote 0x7ffff6b519f0>, fp=<file at 
> remote 0x7ffff0aa1f60>, 
> pathname='/home/glenn/bin/gnuradio/lib/python2.7/dist-packages/gnuradio/uhd/_uhd_swig.so',
>  
> description=('.so', 'rb', 3)), address@hidden) at 
> ../Python/ceval.c:2666
> #9  0x000000000052cf32 in fast_function (nk=<optimized out>, 
> na=<optimized out>, n=0, pp_stack=0x7fffffffc2b0, func=<function at 
> remote 0x7fffed3fa398>)
>      at ../Python/ceval.c:4106
> #10 call_function (oparg=<optimized out>, pp_stack=0x7fffffffc2b0) at 
> ../Python/ceval.c:4041
> #11 PyEval_EvalFrameEx (address@hidden 0x7ffff1c73b00, for file 
> /home/glenn/bin/gnuradio/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py,
>  
> line 28, in <module> (),
>      address@hidden) at ../Python/ceval.c:2666
> #12 0x000000000055c594 in PyEval_EvalCodeEx (co=0x7fffed40a9b0, 
> globals=<optimized out>, locals=<optimized out>, args=<optimized out>, 
> argcount=<optimized out>,
>      kws=<optimized out>, kwcount=0, defs=0x0, defcount=0, closure=0x0) 
> at ../Python/ceval.c:3252
> #13 0x00000000005b7392 in PyEval_EvalCode (co=<optimized out>, 
> globals=<optimized out>, locals=<optimized out>) at ../Python/ceval.c:667
> #14 0x00000000005b744a in PyImport_ExecCodeModuleEx 
> (address@hidden "gnuradio.uhd.uhd_swig", address@hidden<code at 
> remote 0x7fffed40a9b0>,
>      address@hidden 
> "/home/glenn/bin/gnuradio/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.pyc")
>  
> at ../Python/import.c:709
> #15 0x0000000000579f0f in load_source_module.39194 
> (address@hidden "gnuradio.uhd.uhd_swig",
>      pathname=0xa0f170 
> "/home/glenn/bin/gnuradio/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.pyc",
>  
> 
>      address@hidden 
> "/home/glenn/bin/gnuradio/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py",
>  
> fp=<optimized out>) at ../Python/import.c:1099
> #16 0x00000000005b7541 in load_module.39237 (address@hidden 
> "gnuradio.uhd.uhd_swig", fp=<optimized out>,
>      address@hidden 
> "/home/glenn/bin/gnuradio/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py",
>  
> type=<optimized out>, loader=<optimized out>)
>      at ../Python/import.c:1906
> #17 0x000000000055d3a3 in import_submodule.39248 (address@hidden<module 
> at remote 0x7ffff1c8aa98>, address@hidden "uhd_swig",
>      fullname=0xdf9060 "gnuradio.uhd.uhd_swig") at ../Python/import.c:2700
> #18 0x000000000055d77c in load_next (mod=<module at remote 
> 0x7ffff1c8aa98>, altmod=None, address@hidden,
>      address@hidden "gnuradio.uhd.uhd_swig", 
> address@hidden) at ../Python/import.c:2515
> #19 0x000000000055db37 in import_module_level.isra.3 (level=-1, 
> fromlist=None, globals=<optimized out>, name=0x0) at ../Python/import.c:2224
> #20 PyImport_ImportModuleLevel (name=<optimized out>, globals=<optimized 
> out>, locals=<optimized out>, fromlist=None, level=-1) at 
> ../Python/import.c:2288
> #21 0x00000000004755e7 in builtin___import__.32997 (self=<optimized 
> out>, args=<optimized out>, kwds=<optimized out>) at 
> ../Python/bltinmodule.c:49
> #22 0x00000000004da20b in PyObject_Call (kw=0x0,
>      arg=('uhd_swig', {'_prepare_uhd_swig': <function at remote 
> 0x7ffff0adf2a8>, '__builtins__': {'bytearray': <type at remote 
> 0x9166a0>, 'IndexError': <type at remote 0x919900>, 'all': <built-in 
> function all>, 'help': <_Helper at remote 0x7ffff7e7d290>, 'vars': 
> <built-in function vars>, 'SyntaxError': <type at remote 0x91b9e0>, 
> 'unicode': <type at remote 0x91dc80>, 'UnicodeDecodeError': <type at 
> remote 0x91a920>, 'memoryview': <type at remote 0x90dae0>, 'isinstance': 
> <built-in function isinstance>, 'copyright': 
> <_Printer(_Printer__data='Copyright (c) 2001-2014 Python Software 
> Foundation.\nAll Rights Reserved.\n\nCopyright (c) 2000 BeOpen.com.\nAll 
> Rights Reserved.\n\nCopyright (c) 1995-2001 Corporation for National 
> Research Initiatives.\nAll Rights Reserved.\n\nCopyright (c) 1991-1995 
> Stichting Mathematisch Centrum, Amsterdam.\nAll Rights Reserved.', 
> _Printer__lines=None, _Printer__name='copyright', _Printer__dirs=(), 
> _Printer__files=(...)) at remote 0x7ffff7e7d590>, 'NameError': <type at 
> remote 0x91bd20>, 'BytesWarn...(truncated), func=<built-in function 
> __import__>) at ../Objects/abstract.c:2529
> #23 PyEval_CallObjectWithKeywords (address@hidden<built-in function 
> __import__>,
>      address@hidden('uhd_swig', {'_prepare_uhd_swig': <function at 
> remote 0x7ffff0adf2a8>, '__builtins__': {'bytearray': <type at remote 
> 0x9166a0>, 'IndexError': <type at remote 0x919900>, 'all': <built-in 
> function all>, 'help': <_Helper at remote 0x7ffff7e7d290>, 'vars': 
> <built-in function vars>, 'SyntaxError': <type at remote 0x91b9e0>, 
> 'unicode': <type at remote 0x91dc80>, 'UnicodeDecodeError': <type at 
> remote 0x91a920>, 'memoryview': <type at remote 0x90dae0>, 'isinstance': 
> <built-in function isinstance>, 'copyright': 
> <_Printer(_Printer__data='Copyright (c) 2001-2014 Python Software 
> Foundation.\nAll Rights Reserved.\n\nCopyright (c) 2000 BeOpen.com.\nAll 
> Rights Reserved.\n\nCopyright (c) 1995-2001 Corporation for National 
> Research Initiatives.\nAll Rights Reserved.\n\nCopyright (c) 1991-1995 
> Stichting Mathematisch Centrum, Amsterdam.\nAll Rights Reserved.', 
> _Printer__lines=None, _Printer__name='copyright', _Printer__dirs=(), 
> _Printer__files=(...)) at remote 0x7ffff7e7d590>, 'NameError': <type at 
> remote
> 
> 
> 
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