Looks like a double-free in the destructor for the number sink. Please add an issue. Shouldn't slow you down though since it only happens on exit.
On Thu, May 27, 2021 at 8:04 PM Chris Gorman <chrisjohgor...@gmail.com> wrote: > Hello All, > > I'm generating a python file that attempts to replicate Victor Cai's > MFCW radar. I don't know for sure if I've implemented it correctly, > but it causes a core dump when run. I'm using the feature/gr-iio > branch, v3.10.0.0git-341-g131f32c7. I don't have to run the program, > just launch and close the window and I get the following... > > [chris@descartes radar]$ ./mfcw.py > free(): invalid pointer > Aborted (core dumped) > > When I run the program using gdb, I get... > > (gdb) run mfcw.py > Starting program: /usr/bin/python mfcw.py > [Thread debugging using libthread_db enabled] > Using host libthread_db library "/usr/lib/libthread_db.so.1". > [New Thread 0x7fffe6b80640 (LWP 50441)] > [New Thread 0x7fffe635d640 (LWP 50442)] > [New Thread 0x7fffe5910640 (LWP 50443)] > [Thread 0x7fffe5910640 (LWP 50443) exited] > [New Thread 0x7fffe5910640 (LWP 50444)] > [New Thread 0x7fffe510f640 (LWP 50445)] > ---snip--- > [New Thread 0x7fff75d9f640 (LWP 50473)] > [New Thread 0x7fff7559e640 (LWP 50476)] > [Thread 0x7fff927fc640 (LWP 50464) exited] > [Thread 0x7fff92ffd640 (LWP 50463) exited] > ---snip--- > [Thread 0x7fffd7e67640 (LWP 50447) exited] > [Thread 0x7fffb3fff640 (LWP 50454) exited] > [Thread 0x7fff7559e640 (LWP 50476) exited] > [Thread 0x7fff765a0640 (LWP 50472) exited] > [Thread 0x7fff75d9f640 (LWP 50473) exited] > [Thread 0x7fff80ff9640 (LWP 50471) exited] > [Thread 0x7fff817fa640 (LWP 50470) exited] > [Thread 0x7fffe6b80640 (LWP 50441) exited] > [Thread 0x7fff81ffb640 (LWP 50469) exited] > [Thread 0x7fff827fc640 (LWP 50468) exited] > [Thread 0x7fff82ffd640 (LWP 50467) exited] > [Thread 0x7fff837fe640 (LWP 50466) exited] > [Thread 0x7fff83fff640 (LWP 50465) exited] > free(): invalid pointer > Thread 1 "python" received signal SIGABRT, Aborted. > 0x00007ffff7a58d22 in raise () from /usr/lib/libc.so.6 > (gdb) bt > #0 0x00007ffff7a58d22 in raise () at /usr/lib/libc.so.6 > #1 0x00007ffff7a42862 in abort () at /usr/lib/libc.so.6 > #2 0x00007ffff7a9ad28 in __libc_message () at /usr/lib/libc.so.6 > #3 0x00007ffff7aa292a in () at /usr/lib/libc.so.6 > #4 0x00007ffff7aa3cfc in _int_free () at /usr/lib/libc.so.6 > #5 0x00007ffff7aa79e8 in free () at /usr/lib/libc.so.6 > #6 0x00007fffeb1dfd6f in gr::qtgui::number_sink_impl::~number_sink_impl() > () > at /usr/local/lib/libgnuradio-qtgui.so.3.10.0git > #7 0x00007fffeb1e0123 in virtual thunk to > gr::qtgui::number_sink_impl::~number_sink_impl() () at > /usr/local/lib/libgnuradio-qtgui.so.3.10.0git > #8 0x00007fffeb356e0a in () > at /usr/local/lib/python3.9/site-packages/gnuradio/qtgui/ > qtgui_python.cpython-39-x86_64-linux-gnu.so > #9 0x00007fffeb37bce6 in () > at /usr/local/lib/python3.9/site-packages/gnuradio/qtgui/ > qtgui_python.cpython-39-x86_64-linux-gnu.so > #10 0x00007fffeb34f9c4 in () > at /usr/local/lib/python3.9/site-packages/gnuradio/qtgui/ > qtgui_python.cpython-39-x86_64-linux-gnu.so > #11 0x00007ffff7d09cb6 in () at /usr/lib/libpython3.9.so.1.0 > #12 0x00007ffff6d98f26 in () > at /usr/lib/python3.9/site-packages/PyQt5/ > sip.cpython-39-x86_64-linux-gnu.so > #13 0x00007ffff6d9a194 in () > at /usr/lib/python3.9/site-packages/PyQt5/ > sip.cpython-39-x86_64-linux-gnu.so > #14 0x00007ffff7d029ac in () at /usr/lib/libpython3.9.so.1.0 > #15 0x00007ffff7dc17de in () at /usr/lib/libpython3.9.so.1.0 > #16 0x00007ffff7df09ba in PyGC_Collect () at /usr/lib/libpython3.9.so.1.0 > #17 0x00007ffff7dee8a9 in Py_FinalizeEx () at /usr/lib/libpython3.9.so.1.0 > #18 0x00007ffff7de643c in Py_RunMain () at /usr/lib/libpython3.9.so.1.0 > #19 0x00007ffff7db7349 in Py_BytesMain () at /usr/lib/libpython3.9.so.1.0 > #20 0x00007ffff7a43b25 in __libc_start_main () at /usr/lib/libc.so.6 > #21 0x000055555555504e in _start () > > Since my last post was a known bug, I searched the issue tracker at > github for gnuradio, but I couldn't find anything about this one. > Should I move this there? > > Thanks in advance, > > Chris >
