On Sat, Apr 7, 2012 at 5:35 PM, Tom Rondeau <t...@trondeau.com> wrote: > On Sat, Apr 7, 2012 at 10:19 AM, Alexandru Csete <oz9...@gmail.com> wrote: >> On Sat, Apr 7, 2012 at 4:13 PM, Tom Rondeau <t...@trondeau.com> wrote: >>> On Sat, Apr 7, 2012 at 9:48 AM, Alexandru Csete <oz9...@gmail.com> 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). >>> >> >> Hi Tom, >> >> I pulled from origin/master earlier today. Git describe says >> v3.5.2.1-103-gfaf1d33 >> Is there another branch I can try? >> >> Alex > > > Alex, > > Can you try applying the attached patch? It should work, but I've only > tested it on one of my machines. This makes sure all buffers are > aligned and all blocks know if after a start and restart. > > Thanks, > Tom
The patch fixed my problem. Thanks for the q Alex _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
