crash during instantiation/loading default tuning (in Ardour 6.5)

[pauldavisthefirst]

#0 0x00007f046d8da128 in std::__uniq_ptr_impl<sfz::Tuning::Impl, std::default_deletesfz::Tuning::Impl >::_M_ptr() const (this=)
at /usr/include/c++/8/ext/new_allocator.h:81
#1 0x00007f046d8da128 in std::unique_ptr<sfz::Tuning::Impl, std::default_deletesfz::Tuning::Impl >::get() const (this=)
at /usr/include/c++/8/bits/unique_ptr.h:343
#2 0x00007f046d8da128 in std::unique_ptr<sfz::Tuning::Impl, std::default_deletesfz::Tuning::Impl >::operator->() const (this=)
at /usr/include/c++/8/bits/unique_ptr.h:337
#3 0x00007f046d8da128 in sfz::Tuning::loadScalaFile(ghc::filesystem::path const&) (this=0x6769666fa253, path=...)
at /usr/local/music/src/sfizz/src/sfizz/Tuning.cpp:186
#4 0x00007f046d87478f in sfz::Synth::loadScalaFile(ghc::filesystem::path const&) (this=this@entry=0x5578749cb390, path=...)
at /usr/local/music/src/sfizz/src/sfizz/Synth.cpp:769
#5 0x00007f046d873bc2 in sfizz_load_scala_file(sfizz_synth_t*, char const*)
(synth=0x5578749cb390, path=path@entry=0x5578749e5069 "/home/paul/.lv2/sfizz.lv2//Contents/Resources/DefaultScale.scl")
at /usr/include/c++/8/bits/stl_iterator.h:783
#6 0x00007f046d86ea09 in sfizz_lv2_load_scala_file(LV2_Handle, char const*)
(instance=0x5578749cb0f0, file_path=file_path@entry=0x5578749e5069 "/home/paul/.lv2/sfizz.lv2//Contents/Resources/DefaultScale.scl")
at /usr/local/music/src/sfizz/plugins/lv2/sfizz.cpp:1206
#7 0x00007f046d86f90e in restore(LV2_Handle, LV2_State_Retrieve_Function, LV2_State_Handle, uint32_t, LV2_Feature const* const*)
(instance=0x5578749e4a00, retrieve=, handle=0x557874c80070, flags=, features=)
at /usr/local/music/src/sfizz/plugins/lv2/sfizz.cpp:1327
#8 0x00007f055519f208 in lilv_state_restore () at /lib/x86_64-linux-gnu/liblilv-0.so.0
#9 0x00007f0559367925 in ARDOUR::LV2Plugin::init(void const*, long) (this=0x557874999440, c_plugin=0x557871a97030, rate=44100) at ../libs/ardour/lv2_plugin.cc:950
#10 0x00007f055936491b in ARDOUR::LV2Plugin::LV2Plugin(ARDOUR::AudioEngine&, ARDOUR::Session&, void const*, long) (this=0x557874999440, engine=...,
session=..., c_plugin=0x557871a97030, rate=44100) at ../libs/ardour/lv2_plugin.cc:405
#11 0x00007f05593767f1 in ARDOUR::LV2PluginInfo::load(ARDOUR::Session&) (this=0x557872efda30, session=...) at ../libs/ardour/lv2_plugin.cc:3521
#12 0x00007f05591e295b in ARDOUR::Session::load_and_connect_instruments(std::__cxx11::list<boost::shared_ptrARDOUR::Route, std::allocator<boost::shared_ptrARDOUR::Route > >&, bool, boost::shared_ptrARDOUR::PluginInfo, ARDOUR::Plugin::PresetRecord*, ARDOUR::ChanCount&)
(this=0x557872d0c470, new_routes=std::__cxx11::list = {...}, strict_io=true, instrument=..., pset=0x0, existing_outputs=...) at ../libs/ardour/session.cc:3266
#13 0x00007f05591dc43c in ARDOUR::Session::new_midi_track(ARDOUR::ChanCount const&, ARDOUR::ChanCount const&, bool, boost::shared_ptrARDOUR::PluginInfo, ARDOUR::Plugin::PresetRecord*, ARDOUR::RouteGroup*, unsigned int, std::__cxx11::basic_string<char, std::char_traits, std::allocator >, unsigned int, ARDOUR::TrackMode, bool) (this=0x557872d0c470, input=..., output=..., strict_io=true, instrument=..., pset=0x0, route_group=
0x0, how_many=0, name_template="sfizz", order=4294967295, mode=ARDOUR::Normal, input_auto_connect=true) at ../libs/ardour/session.cc:2473
#14 0x000055786f26aa49 in ARDOUR_UI::session_add_midi_route(bool, ARDOUR::RouteGroup*, unsigned int, std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, bool, boost::shared_ptrARDOUR::PluginInfo, ARDOUR::Plugin::PresetRecord*, unsigned int) (this=
0x55787121e040, disk=true, route_group=0x0, how_many=1, name_template="sfizz", strict_io=true, instrument=..., pset=0x0, order=4294967295)
at ../gtk2_ardour/ardour_ui.cc:1515
#15 0x000055786f27128e in ARDOUR_UI::add_route_dialog_response(int) (this=0x55787121e040, r=1) at ../gtk2_ardour/ardour_ui.cc:2793
#16 0x000055786f2a1190 in sigc::bound_mem_functor1<void, ARDOUR_UI, int>::operator()(int const&) const (this=0x5578747054d8, _A_a1=@0x7ffe8b74397c: 1)
at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:2066
sfztools/sfizz-ui#88 0x000055786f29a21b in sigc::adaptor_functor<sigc::bound_mem_functor1<void, ARDOUR_UI, int> >::operator()<int const&>(int const&) const
(this=0x5578747054d0, _A_arg1=@0x7ffe8b74397c: 1) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:89
#18 0x000055786f291cb8 in sigc::internal::slot_call1<sigc::bound_mem_functor1<void, ARDOUR_UI, int>, void, int>::call_it(sigc::internal::slot_rep*, int const&)
(rep=0x5578747054a0, a_1=@0x7ffe8b74397c: 1) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:170
#19 0x00007f0555becf27 in () at /lib/x86_64-linux-gnu/libgtkmm-2.4.so.1
#20 0x00007f0556a28c8d in g_closure_invoke () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007f0556a3be64 in () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007f0556a452be in g_signal_emit_valist () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#23 0x00007f0556a4597f in g_signal_emit () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#24 0x00007f0556a28c8d in g_closure_invoke () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#25 0x00007f0556a3c365 in () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#26 0x00007f0556a452be in g_signal_emit_valist () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#27 0x00007f0556a4597f in g_signal_emit () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007f0556531e25 in () at /lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
sfztools/sfizz-ui#87 0x00007f0556a28c8d in g_closure_invoke () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#30 0x00007f0556a3c4b4 in () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#31 0x00007f0556a452be in g_signal_emit_valist () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#32 0x00007f0556a4597f in g_signal_emit () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#33 0x00007f0556530d69 in () at /lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#34 0x00007f05565d71eb in () at /lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#35 0x00007f0556a28c8d in g_closure_invoke () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0
#36 0x00007f0556a3bbbd in () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0

Let me know what, if anything, I can do to help. This was from a version of sfizz built locally using git master about 15 hours ago.

[stefanos82]

@pauldavisthefirst even though this project is not my area, I have noticed something in the output that caught my attention:

sfztools/sfizz#5 0x00007f046d873bc2 in sfizz_load_scala_file(sfizz_synth_t*, char const*)
(synth=0x5578749cb390, path=path@entry=0x5578749e5069 "/home/paul/.lv2/sfizz.lv2//Contents/Resources/DefaultScale.scl")
at /usr/include/c++/8/bits/stl_iterator.h:783

sfztools/sfizz#6 0x00007f046d86ea09 in sfizz_lv2_load_scala_file(LV2_Handle, char const*)
(instance=0x5578749cb0f0, file_path=file_path@entry=0x5578749e5069 "/home/paul/.lv2/sfizz.lv2//Contents/Resources/DefaultScale.scl")
at /usr/local/music/src/sfizz/plugins/lv2/sfizz.cpp:1206

Is there a slash normalization somewhere or it doesn't matter?

What's the missing path between sfizz.lv2/ and /Contents/?

[pauldavisthefirst]

There's no missing path there. To be canonical, the '//' should indeed be a single slash. However, in both the C library and the kernel, '//' is handled equivalently to '/' AFAIK. I don't think that's the issue.

[stefanos82]

thank you for the clarification @pauldavisthefirst

[jpcima]

This has been fixed in #668 ; a memory corruption that occured in LV2 only, by passing the wrong value as LV2_Handle.

[jpcima]

Thanks for the report