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falkTX / Carla

Audio plugin host
https://kx.studio/carla
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Segfault on right-click in VST3 GUI #1292

Open cbix opened 3 years ago

cbix commented 3 years ago

As discussed in this issue in abNinjam, this might be a bug in either Carla 2.2.0 or the included VST3 lib:

Thread 1 "carla" received signal SIGSEGV, Segmentation fault.
0x00007fffbdad4608 in VSTGUI::VST3Editor::onMouseDown(VSTGUI::CFrame*, VSTGUI::CPoint const&, VSTGUI::CButtonState const&) ()
   from /home/florian/.vst3/abNinjam.vst3/Contents/x86_64-linux/abNinjam.so
(gdb) thread apply all bt
...
Thread 1 (Thread 0x7ffff78b8740 (LWP 81543) "carla"):
#0  0x00007fffbdad4608 in VSTGUI::VST3Editor::onMouseDown(VSTGUI::CFrame*, VSTGUI::CPoint const&, VSTGUI::CButtonState const&) () at /home/florian/.vst3/abNinjam.vst3/Contents/x86_64-linux/abNinjam.so
#1  0x00007fffbda3e0b5 in VSTGUI::CFrame::callMouseObserverMouseDown(VSTGUI::CPoint const&, VSTGUI::CButtonState const&) () at /home/florian/.vst3/abNinjam.vst3/Contents/x86_64-linux/abNinjam.so
#2  0x00007fffbda3e2f5 in VSTGUI::CFrame::onMouseDown(VSTGUI::CPoint&, VSTGUI::CButtonState const&) () at /home/florian/.vst3/abNinjam.vst3/Contents/x86_64-linux/abNinjam.so
#3  0x00007fffbda3e65f in non-virtual thunk to VSTGUI::CFrame::platformOnMouseDown(VSTGUI::CPoint&, VSTGUI::CButtonState const&) () at /home/florian/.vst3/abNinjam.vst3/Contents/x86_64-linux/abNinjam.so
#4  0x00007fffbdac6595 in VSTGUI::X11::Frame::Impl::onEvent(xcb_button_press_event_t&) () at /home/florian/.vst3/abNinjam.vst3/Contents/x86_64-linux/abNinjam.so
#5  0x00007fffbdac9418 in VSTGUI::X11::RunLoop::Impl::onEvent() () at /home/florian/.vst3/abNinjam.vst3/Contents/x86_64-linux/abNinjam.so
#6  0x00007fffe918bbb3 in  () at /usr/lib/carla/libcarla_standalone2.so
...

How to reproduce:

  1. build and install the latest version of abNinjam. The GUI only is only available in the VST3 build.
  2. start Carla 2.2.0 carla --gdb and load the abNinjam VST3 plugin
  3. open the plugin GUI and right-click on the logo
federicobriata commented 3 years ago

I'm also getting some segfault with abninjam on carla, even when i want to remove the vst plugin, and the same with lv2. I'm not fully sure if it's Carla issue or abninjam... @falkTX @antanasbruzas

cbix commented 1 year ago

This came up again when testing uhhyou-plugins:

#0  0x00007fff9e8f300b in VSTGUI::BarBox<SomeDSP::LinearScale<double> >::onMouseDownEvent(VSTGUI::MouseDownEvent&) () at /usr/lib/vst3/L4Reverb.vst3/Contents/x86_64-linux/L4Reverb.so
#1  0x00007fff9e961c70 in VSTGUI::CViewContainer::onMouseDownEvent(VSTGUI::MouseDownEvent&) () at /usr/lib/vst3/L4Reverb.vst3/Contents/x86_64-linux/L4Reverb.so
#2  0x00007fff9e941fa4 in VSTGUI::CFrame::dispatchMouseDownEvent(VSTGUI::MouseDownEvent&) () at /usr/lib/vst3/L4Reverb.vst3/Contents/x86_64-linux/L4Reverb.so
#3  0x00007fff9e9429ec in VSTGUI::CFrame::dispatchEvent(VSTGUI::Event&) () at /usr/lib/vst3/L4Reverb.vst3/Contents/x86_64-linux/L4Reverb.so
#4  0x00007fff9e97e128 in VSTGUI::X11::Frame::Impl::onEvent(xcb_button_press_event_t&) () at /usr/lib/vst3/L4Reverb.vst3/Contents/x86_64-linux/L4Reverb.so
#5  0x00007fff9e980a1b in VSTGUI::X11::RunLoop::Impl::onEvent() () at /usr/lib/vst3/L4Reverb.vst3/Contents/x86_64-linux/L4Reverb.so

This is not reproducible in Reaper or Ardour.