This could be something we need to change in the in-tree gr-soapy. You can post an issue to https://github.com/gnuradio/gnuradio/issues and we'll take a closer look to make sure we're using the SoapySDR AP correctly.
On Sat, Apr 16, 2022 at 10:29 PM Cinaed Simson <cinaed.sim...@gmail.com> wrote: > > > On 4/16/22 14:53, Gavin Jacobs wrote: > > I had previously thought that there was an issue with the save/restore of > the geometry of the QT window, but I determined that it was a problem when > using the gr-soapy block with a hackrf, so I have started a new thread. > > If I make a flowgraph using the "Soapy hackrf source" (i.e. gr-soapy block > with a hackrf yml), it works fine when receiving the streaming data, but > crashes the top block on exit. When I stop the flowgraph, I get the > following message on the console area: > >>> Done (return code -11) > I now know that means a segmentation fault, and thanks to Vasil, I tried > to debug it. The offending code is in a callback and references some memory > that is no longer around, probably because all the blocks are shutting down > and calling their respective destructors. So, I then disabled the gr-soapy > source, and used the gr-osmosdr source (soapy=0,driver=hackrf). This worked > as expected, including a normal message: > >>> Done > So, I compared the way the gr-osmosdr used soapyHackrf with the way > gr-soapy does it, and I found that: > gr-osmosdr calls deactivateStream() on stop(), and closeStream() on > ~destructor() > gr-soapy never calls deactivateStream(), calls closeStream() on stop(), > and does nothing in ~destructor() > > My assessment is that gr-soapy should follow the pattern previously used > in gr-osmosdr. The call to deactivateStream() stops the streaming and > cancels the callback, so the problem would be fixed. A workaround is to use > the gr-osmosdr/soapy/hackrf block, but it is marked as deprecated, so that > won't do for long term. > > Is there anyone with a hackrf that can verify the problem? and then, how > to register a bug report? > > Jake > > > Try posting an issue > > https://github.com/pothosware/SoapyHackRF > > -- Cinaed > >
