Re: [Discuss-gnuradio] Segmentation fault in volk_32f_s32f_multiply_32f_a_sse

[Tom Rondeau]

On Sat, Apr 7, 2012 at 9:48 AM, Alexandru Csete <address@hidden> wrote:
> Greetings,
>
> I'm getting segmentation faults in a C++ application when I restart
> the flow graph, i.e by doing:
>
> tb->start()
>  ...
> tb->stop()
> tb->wait()
> ...
> tb->start()
> (crashes)
>
> Running the application through a debugger suggests it is
> volk_32f_s32f_multiply_32f_a_sse which is used by a gr_multiply_ff()
> block. I end up with the attached assembly dump with a marker
> highlighting line 19.
>
> I have attached a simple python flow graph, which also crashes for me.
> Note that the python code was originally generated by GRC and it used
> gr.multiply_const_vff which didn't crash. I manually changed it to
> gr.multiply_const_ff to provoke the crash.
>
> This is happening on Ubuntu 11.04 64 bit and intel i7 processor. I'm
> also seeing the message "Using Volk machine: sse4_2_64" when I start
> the graph. GNU Radio is built using cmake.
>
> Alex

What version of GNU Radio are you using? This sounds like a bug that
was fixed a little while ago and is not a release version yet (will be
in 3.5.3).

Tom