Did you install from pybombs?
I've seen this error using pybombs to install on Ubuntu 15.04. It seems like a few other folks on this list have the same problem.
Running gdb --args python wifi_loopback.py shows the segfault location:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff7dffb700 (LWP 11226)]
0x00007fffde0db3e4 in ofdm_parse_mac_impl::parse (this=0x2de5fd0, msg=...) at /home/pwg3v/git_repos/pybombs/src/gr-ieee-80211-pwg/lib/ofdm_parse_mac.cc:61
61 mylog(boost::format("length: %1%") % data_len );
My boost version is 1.55. If you disable logging in the grc block noted, (ofdm_parse_mac), the seg fault will go away.
Bastian, could you elaborate on the boost version issue? Are there known incompatibilities or is this something that just needs to be fixed?
Thanks,
PWG
Hi,
please start the flow graph in a debugger to see where it segfaults.
http://gnuradio.org/redmine/projects/gnuradio/wiki/TutorialsGDB
Recently, some people had problems with certain boost versions (in
boost::format IIRC).
Best,
Bastian
> On 17 Jul 2015, at 12:03, Leonardo S. Cardoso <address@hidden> wrote:
>
> Hi everyone,
>
> I’m wondering if there are any gr-ieee802.11 exports out there, who have had
> the problem as I did... :)
>
> I’m having some issues with a core dump whenever I try to execute any of the
> reception codes (wifi_loopback or wifi_rx).
>
> Specifically with the wifi_loopback I get this before the core dump:
>
> linux; GNU C++ version 4.8.4; Boost_105400; UHD_003.009.git-219-gd9656de8
>
> Using Volk machine: avx_64_mmx_orc
> OFDM MAPPER: encoding: 0
> set_min_output_buffer on block 31 to 96000
> set_min_output_buffer on block 33 to 96000
> set_min_output_buffer on block 35 to 96000
> set_min_output_buffer on block 36 to 96000
> set_min_output_buffer on block 39 to 96000
> set_min_output_buffer on block 50 to 96000
> Segmentation fault (core dumped)
>
> I have no idea even in which code to look for the issue, so I’m a bit stuck.
>
> Any help would be welcome.
>
> Cheers,
>
> Leo
> --
> Leonardo S. Cardoso
> Maitre de Conference
> CITI lab, INSA-Lyon - INRIA
>
>
>
>
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
--
Dipl.-Inform. Bastian Bloessl
Distributed Embedded Systems Group
University of Paderborn, Germany
http://www.ccs-labs.org/~bloessl/
|