Invalid read in audio demo

[qarmin]

Godot version:
Godot 3.2 beta 4
OS/device including version:
Ubuntu 19.10
Issue description:
Sanitizer Log(asan)

==7635==ERROR: AddressSanitizer: heap-use-after-free on address 0x631006a5480c at pc 0x00000163132e bp 0x7ffc6bce04d0 sp 0x7ffc6bce04c0
READ of size 4 at 0x631006a5480c thread T0
    #0 0x163132d in CowData<float>::size() const core/cowdata.h:128
    #1 0x16317bc in CowData<float>::get(int) const core/cowdata.h:152
    #2 0x162d8cf in Vector<float>::operator[](int) const core/vector.h:85
    #3 0xda3dbef in AudioEffectRecord::get_recording() const servers/audio/effects/audio_effect_record.cpp:238
    #4 0xda4d2d4 in MethodBind0RC<Ref<AudioStreamSample> >::call(Object*, Variant const**, int, Variant::CallError&) core/method_bind.gen.inc:593
    #5 0xe52a5cc in Object::call(StringName const&, Variant const**, int, Variant::CallError&) core/object.cpp:921
    #6 0xe79d090 in Variant::call_ptr(StringName const&, Variant const**, int, Variant*, Variant::CallError&) core/variant_call.cpp:1112
    #7 0x1a182e9 in GDScriptFunction::call(GDScriptInstance*, Variant const**, int, Variant::CallError&, GDScriptFunction::CallState*) modules/gdscript/gdscript_function.cpp:1078
    #8 0x18549c3 in GDScriptInstance::call(StringName const&, Variant const**, int, Variant::CallError&) modules/gdscript/gdscript.cpp:1173
    #9 0xe52a139 in Object::call(StringName const&, Variant const**, int, Variant::CallError&) core/object.cpp:900
    #10 0xe533fc4 in Object::emit_signal(StringName const&, Variant const**, int) core/object.cpp:1219
    #11 0xe535f8b in Object::emit_signal(StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) core/object.cpp:1276
    #12 0x960abeb in BaseButton::_pressed() scene/gui/base_button.cpp:135
    #13 0x960e558 in BaseButton::on_action_event(Ref<InputEvent>) scene/gui/base_button.cpp:169
    #14 0x96074c5 in BaseButton::_gui_input(Ref<InputEvent>) scene/gui/base_button.cpp:64
    #15 0x647ce71 in MethodBind1<Ref<InputEvent> >::call(Object*, Variant const**, int, Variant::CallError&) core/method_bind.gen.inc:775
    #16 0xe5261e0 in Object::call_multilevel(StringName const&, Variant const**, int) core/object.cpp:763
    #17 0xe5292eb in Object::call_multilevel(StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) core/object.cpp:863
    #18 0x950d202 in Viewport::_gui_call_input(Control*, Ref<InputEvent> const&) scene/main/viewport.cpp:1634
    #19 0x951c9f5 in Viewport::_gui_input_event(Ref<InputEvent>) scene/main/viewport.cpp:2014
    #20 0x9540d8d in Viewport::input(Ref<InputEvent> const&) scene/main/viewport.cpp:2790
    #21 0x9500b3a in Viewport::_vp_input(Ref<InputEvent> const&) scene/main/viewport.cpp:1411
    #22 0x234cd1d in MethodBind1<Ref<InputEvent> const&>::call(Object*, Variant const**, int, Variant::CallError&) core/method_bind.gen.inc:775
    #23 0xe52a5cc in Object::call(StringName const&, Variant const**, int, Variant::CallError&) core/object.cpp:921
    #24 0xe528d1d in Object::call(StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) core/object.cpp:847
    #25 0x93efa59 in SceneTree::call_group_flags(unsigned int, StringName const&, StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) scene/main/scene_tree.cpp:275
    #26 0x93f4ee4 in SceneTree::input_event(Ref<InputEvent> const&) scene/main/scene_tree.cpp:430
    #27 0x14e98d8 in InputDefault::_parse_input_event_impl(Ref<InputEvent> const&, bool) main/input_default.cpp:442
    #28 0x14deee6 in InputDefault::parse_input_event(Ref<InputEvent> const&) main/input_default.cpp:259
    #29 0x14f1ec4 in InputDefault::flush_accumulated_events() main/input_default.cpp:678
    #30 0x147077d in OS_X11::process_xevents() platform/x11/os_x11.cpp:2687
    #31 0x1482ed2 in OS_X11::run() platform/x11/os_x11.cpp:3251
    #32 0x13fe299 in main platform/x11/godot_x11.cpp:56
    #33 0x7fd3a1bfe1e2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x271e2)
    #34 0x13fdead in _start (/usr/bin/godots+0x13fdead)

0x631006a5480c is located 12 bytes inside of 65552-byte region [0x631006a54800,0x631006a64810)
freed by thread T5 here:
    #0 0x7fd3a3122f1e in __interceptor_realloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10df1e)
    #1 0xea53d97 in Memory::realloc_static(void*, unsigned long, bool) core/os/memory.cpp:137
    #2 0x1630ebe in CowData<float>::resize(int) (/usr/bin/godots+0x1630ebe)
    #3 0x162d2e8 in Vector<float>::resize(int) core/vector.h:84
    #4 0x2b77d35 in Vector<float>::push_back(float const&) core/vector.h:152
    #5 0xda394e5 in AudioEffectRecordInstance::_io_store_buffer() servers/audio/effects/audio_effect_record.cpp:95
    #6 0xda37e33 in AudioEffectRecordInstance::_update_buffer() servers/audio/effects/audio_effect_record.cpp:55
    #7 0xda3868c in AudioEffectRecordInstance::_io_thread_process() servers/audio/effects/audio_effect_record.cpp:77
    #8 0xda39918 in AudioEffectRecordInstance::_thread_callback(void*) servers/audio/effects/audio_effect_record.cpp:107
    #9 0x4f821a5 in ThreadPosix::thread_callback(void*) drivers/unix/thread_posix.cpp:74
    #10 0x7fd3a2a98668 in start_thread /build/glibc-4WA41p/glibc-2.30/nptl/pthread_create.c:479

previously allocated by thread T5 here:
    #0 0x7fd3a3122f1e in __interceptor_realloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10df1e)
    #1 0xea53d97 in Memory::realloc_static(void*, unsigned long, bool) core/os/memory.cpp:137
    #2 0x1630ebe in CowData<float>::resize(int) (/usr/bin/godots+0x1630ebe)
    #3 0x162d2e8 in Vector<float>::resize(int) core/vector.h:84
    #4 0x2b77d35 in Vector<float>::push_back(float const&) core/vector.h:152
    #5 0xda3957f in AudioEffectRecordInstance::_io_store_buffer() servers/audio/effects/audio_effect_record.cpp:96
    #6 0xda37e33 in AudioEffectRecordInstance::_update_buffer() servers/audio/effects/audio_effect_record.cpp:55
    #7 0xda3868c in AudioEffectRecordInstance::_io_thread_process() servers/audio/effects/audio_effect_record.cpp:77
    #8 0xda39918 in AudioEffectRecordInstance::_thread_callback(void*) servers/audio/effects/audio_effect_record.cpp:107
    #9 0x4f821a5 in ThreadPosix::thread_callback(void*) drivers/unix/thread_posix.cpp:74
    #10 0x7fd3a2a98668 in start_thread /build/glibc-4WA41p/glibc-2.30/nptl/pthread_create.c:479

Thread T5 created by T0 here:
    #0 0x7fd3a304f805 in pthread_create (/lib/x86_64-linux-gnu/libasan.so.5+0x3a805)
    #1 0x4f826a0 in ThreadPosix::create_func_posix(void (*)(void*), void*, Thread::Settings const&) drivers/unix/thread_posix.cpp:90
    #2 0xea676b1 in Thread::create(void (*)(void*), void*, Thread::Settings const&) core/os/thread.cpp:51
    #3 0xda39fe8 in AudioEffectRecordInstance::init() servers/audio/effects/audio_effect_record.cpp:122
    #4 0xda3c21e in AudioEffectRecord::set_recording_active(bool) servers/audio/effects/audio_effect_record.cpp:196
    #5 0x1eaaf81 in MethodBind1<bool>::call(Object*, Variant const**, int, Variant::CallError&) core/method_bind.gen.inc:775
    #6 0xe52a5cc in Object::call(StringName const&, Variant const**, int, Variant::CallError&) core/object.cpp:921
    #7 0xe79d090 in Variant::call_ptr(StringName const&, Variant const**, int, Variant*, Variant::CallError&) core/variant_call.cpp:1112
    #8 0x1a1836a in GDScriptFunction::call(GDScriptInstance*, Variant const**, int, Variant::CallError&, GDScriptFunction::CallState*) modules/gdscript/gdscript_function.cpp:1081
    #9 0x18549c3 in GDScriptInstance::call(StringName const&, Variant const**, int, Variant::CallError&) modules/gdscript/gdscript.cpp:1173
    #10 0xe52a139 in Object::call(StringName const&, Variant const**, int, Variant::CallError&) core/object.cpp:900
    #11 0xe533fc4 in Object::emit_signal(StringName const&, Variant const**, int) core/object.cpp:1219
    #12 0xe535f8b in Object::emit_signal(StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) core/object.cpp:1276
    #13 0x960abeb in BaseButton::_pressed() scene/gui/base_button.cpp:135
    #14 0x960e558 in BaseButton::on_action_event(Ref<InputEvent>) scene/gui/base_button.cpp:169
    #15 0x96074c5 in BaseButton::_gui_input(Ref<InputEvent>) scene/gui/base_button.cpp:64
    #16 0x647ce71 in MethodBind1<Ref<InputEvent> >::call(Object*, Variant const**, int, Variant::CallError&) core/method_bind.gen.inc:775
    #17 0xe5261e0 in Object::call_multilevel(StringName const&, Variant const**, int) core/object.cpp:763
    #18 0xe5292eb in Object::call_multilevel(StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) core/object.cpp:863
    #19 0x950d202 in Viewport::_gui_call_input(Control*, Ref<InputEvent> const&) scene/main/viewport.cpp:1634
    #20 0x951c9f5 in Viewport::_gui_input_event(Ref<InputEvent>) scene/main/viewport.cpp:2014
    #21 0x9540d8d in Viewport::input(Ref<InputEvent> const&) scene/main/viewport.cpp:2790
    #22 0x9500b3a in Viewport::_vp_input(Ref<InputEvent> const&) scene/main/viewport.cpp:1411
    #23 0x234cd1d in MethodBind1<Ref<InputEvent> const&>::call(Object*, Variant const**, int, Variant::CallError&) core/method_bind.gen.inc:775
    #24 0xe52a5cc in Object::call(StringName const&, Variant const**, int, Variant::CallError&) core/object.cpp:921
    #25 0xe528d1d in Object::call(StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) core/object.cpp:847
    #26 0x93efa59 in SceneTree::call_group_flags(unsigned int, StringName const&, StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) scene/main/scene_tree.cpp:275
    #27 0x93f4ee4 in SceneTree::input_event(Ref<InputEvent> const&) scene/main/scene_tree.cpp:430
    #28 0x14e98d8 in InputDefault::_parse_input_event_impl(Ref<InputEvent> const&, bool) main/input_default.cpp:442
    #29 0x14deee6 in InputDefault::parse_input_event(Ref<InputEvent> const&) main/input_default.cpp:259
    #30 0x14f1ec4 in InputDefault::flush_accumulated_events() main/input_default.cpp:678
    #31 0x147077d in OS_X11::process_xevents() platform/x11/os_x11.cpp:2687
    #32 0x1482ed2 in OS_X11::run() platform/x11/os_x11.cpp:3251
    #33 0x13fe299 in main platform/x11/godot_x11.cpp:56
    #34 0x7fd3a1bfe1e2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x271e2)

Steps to reproduce:

1. Run project
2. Click "Record"
3. Click "Stop"
   Minimal reproduction project:
   https://github.com/godotengine/godot-demo-projects/tree/master/audio/mic_record

[mika314]

My guess this push_back is the trouble maker:

 #4 0x2b77d35 in Vector<float>::push_back(float const&) core/vector.h:152

It is asking to grow memory, and if it cannot grow in-place, it has to move to the new place, while memory is moving to the new place, the pointer to the size of the array may become 0 from the view of the main thread.

[Adrenesis]

Hi there,

I'm trying to build a voip addon for godot, and I've been facing some CRASH_BAD_INDEX at cowdata.h:152 randomly when using AudioEffectRecord::get_recording().
Here is a minimal project exposing this bug:
https://github.com/Adrenesis/godot-capture-microphone-glitch

Here is the merge request I'm working on (some more work is needed, like the format 8bit is not tested and adpcm is not implemeted as I never got it working in the first place (I've a pain story with it u_u), but some review would be cool):
https://github.com/Adrenesis/godot/tree/audio-fix-get-recording-cowdata
And it does the encoding on it's own thread too.

So, I don't know if it is linked, I'll try it later.

Edit: after some tries, I can't reproduce the crash of the OP, but seeing the code of it, it's based on get_recording(), so my pseudo MR should work here.

Edit2: Just saw your MR, It does use the base AudioEffectRecord architecture which should be remorked I think, as encoding should happen in a threaded way, and we shouldn't trigger 2 sample duplications (both in get_recording(), one to encode and the other to set_data on the AudioStreamSample.) in the main thread, as audio samples are heavy (44100 iteration / second).

I encode the PoolVector<uint8_t> on the thread asit's more thread safe (it throws errors when badly manipulated but not crashes), sorry to overlap your work and not seeing the already made MR 200 pixels away from the answer button.

And the MR request should not be on master as this is a hard crash/bug, it should at least be aimed on 3.2 as it would rot any audio recording for 3.x.

[Calinou]

And the MR request should not be on master as this is a hard crash/bug, it should at least be aimed on 3.2 as it would rot any audio recording for 3.x.

Pull requests should be opened against the master branch first, then against the 3.2 branch only if the master pull request is likely to be merged.

Of course, if a pull request doesn't apply to master by design, then you can open it directly against the 3.2 branch.

[Adrenesis]

@Calinou Ok =)

Sorry, I'm a bit new to godot's contributions, thank you for the info.

[qarmin]

Still happens with 3.2.4 beta, but Record and stop buttons must be clicked very fast

==394783==ERROR: AddressSanitizer: heap-use-after-free on address 0x63100033480c at pc 0x0000015e6d62 bp 0x7ffe5607b6b0 sp 0x7ffe5607b6a0
READ of size 4 at 0x63100033480c thread T0
    #0 0x15e6d61 in CowData<float>::size() const core/cowdata.h:128
    #1 0x15e71f0 in CowData<float>::get(int) const core/cowdata.h:152
    #2 0x15e3411 in Vector<float>::operator[](int) const core/vector.h:85
    #3 0xdc61b37 in AudioEffectRecord::get_recording() const servers/audio/effects/audio_effect_record.cpp:238
    #4 0xdc70eb2 in MethodBind0RC<Ref<AudioStreamSample> >::call(Object*, Variant const**, int, Variant::CallError&) core/method_bind.gen.inc:593
    #5 0xe76a92d in Object::call(StringName const&, Variant const**, int, Variant::CallError&) core/object.cpp:922
    #6 0xe9e9c47 in Variant::call_ptr(StringName const&, Variant const**, int, Variant*, Variant::CallError&) core/variant_call.cpp:1128
    #7 0x19ed466 in GDScriptFunction::call(GDScriptInstance*, Variant const**, int, Variant::CallError&, GDScriptFunction::CallState*) modules/gdscript/gdscript_function.cpp:1088
    #8 0x181dbd9 in GDScriptInstance::call(StringName const&, Variant const**, int, Variant::CallError&) modules/gdscript/gdscript.cpp:1238
    #9 0xe76a49d in Object::call(StringName const&, Variant const**, int, Variant::CallError&) core/object.cpp:901
    #10 0xe77478e in Object::emit_signal(StringName const&, Variant const**, int) core/object.cpp:1249
    #11 0xe7767c4 in Object::emit_signal(StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) core/object.cpp:1306
    #12 0x975daff in BaseButton::_pressed() scene/gui/base_button.cpp:135
    #13 0x9761911 in BaseButton::on_action_event(Ref<InputEvent>) scene/gui/base_button.cpp:169
    #14 0x975a435 in BaseButton::_gui_input(Ref<InputEvent>) scene/gui/base_button.cpp:64
    #15 0x64eaf72 in MethodBind1<Ref<InputEvent> >::call(Object*, Variant const**, int, Variant::CallError&) core/method_bind.gen.inc:775
    #16 0xe766556 in Object::call_multilevel(StringName const&, Variant const**, int) core/object.cpp:764
    #17 0xe769652 in Object::call_multilevel(StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) core/object.cpp:864
    #18 0x965c68e in Viewport::_gui_call_input(Control*, Ref<InputEvent> const&) scene/main/viewport.cpp:1669
    #19 0x966bd1f in Viewport::_gui_input_event(Ref<InputEvent>) scene/main/viewport.cpp:2049
    #20 0x968fd4c in Viewport::input(Ref<InputEvent> const&) scene/main/viewport.cpp:2825
    #21 0x96500f1 in Viewport::_vp_input(Ref<InputEvent> const&) scene/main/viewport.cpp:1446
    #22 0x2343222 in MethodBind1<Ref<InputEvent> const&>::call(Object*, Variant const**, int, Variant::CallError&) core/method_bind.gen.inc:775
    #23 0xe76a92d in Object::call(StringName const&, Variant const**, int, Variant::CallError&) core/object.cpp:922
    #24 0xe769083 in Object::call(StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) core/object.cpp:848
    #25 0x953cfd1 in SceneTree::call_group_flags(unsigned int, StringName const&, StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) scene/main/scene_tree.cpp:275
    #26 0x954247b in SceneTree::input_event(Ref<InputEvent> const&) scene/main/scene_tree.cpp:431
    #27 0x14967e7 in InputDefault::_parse_input_event_impl(Ref<InputEvent> const&, bool) main/input_default.cpp:442
    #28 0x148bf3d in InputDefault::parse_input_event(Ref<InputEvent> const&) main/input_default.cpp:259
    #29 0x149eebf in InputDefault::flush_accumulated_events() main/input_default.cpp:678
    #30 0x14184ac in OS_X11::process_xevents() platform/x11/os_x11.cpp:2792
    #31 0x142c6af in OS_X11::run() platform/x11/os_x11.cpp:3392
    #32 0x139eb56 in main platform/x11/godot_x11.cpp:56
    #33 0x7ff2988ae0b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
    #34 0x139e76d in _start (/usr/bin/godots+0x139e76d)

0x63100033480c is located 12 bytes inside of 65552-byte region [0x631000334800,0x631000344810)
freed by thread T11 here:
    #0 0x7ff299d738d0 in __interceptor_realloc (/lib/x86_64-linux-gnu/libasan.so.6+0xb08d0)
    #1 0xeca49e8 in Memory::realloc_static(void*, unsigned long, bool) core/os/memory.cpp:137
    #2 0x15e690d in CowData<float>::resize(int) core/cowdata.h:287
    #3 0x15e2e4e in Vector<float>::resize(int) core/vector.h:84
    #4 0x2cc96dd in Vector<float>::push_back(float) core/vector.h:152
    #5 0xdc5d1ad in AudioEffectRecordInstance::_io_store_buffer() servers/audio/effects/audio_effect_record.cpp:95
    #6 0xdc5bb28 in AudioEffectRecordInstance::_update_buffer() servers/audio/effects/audio_effect_record.cpp:55
    #7 0xdc5c36d in AudioEffectRecordInstance::_io_thread_process() servers/audio/effects/audio_effect_record.cpp:77
    #8 0xdc5d609 in AudioEffectRecordInstance::_thread_callback(void*) servers/audio/effects/audio_effect_record.cpp:107
    #9 0x4e8daed in ThreadPosix::thread_callback(void*) drivers/unix/thread_posix.cpp:74
    #10 0x7ff299742608 in start_thread /build/glibc-ZN95T4/glibc-2.31/nptl/pthread_create.c:477

previously allocated by thread T11 here:
    #0 0x7ff299d738d0 in __interceptor_realloc (/lib/x86_64-linux-gnu/libasan.so.6+0xb08d0)
    #1 0xeca49e8 in Memory::realloc_static(void*, unsigned long, bool) core/os/memory.cpp:137
    #2 0x15e690d in CowData<float>::resize(int) core/cowdata.h:287
    #3 0x15e2e4e in Vector<float>::resize(int) core/vector.h:84
    #4 0x2cc96dd in Vector<float>::push_back(float) core/vector.h:152
    #5 0xdc5d1ad in AudioEffectRecordInstance::_io_store_buffer() servers/audio/effects/audio_effect_record.cpp:95
    #6 0xdc5bb28 in AudioEffectRecordInstance::_update_buffer() servers/audio/effects/audio_effect_record.cpp:55
    #7 0xdc5c36d in AudioEffectRecordInstance::_io_thread_process() servers/audio/effects/audio_effect_record.cpp:77
    #8 0xdc5d609 in AudioEffectRecordInstance::_thread_callback(void*) servers/audio/effects/audio_effect_record.cpp:107
    #9 0x4e8daed in ThreadPosix::thread_callback(void*) drivers/unix/thread_posix.cpp:74
    #10 0x7ff299742608 in start_thread /build/glibc-ZN95T4/glibc-2.31/nptl/pthread_create.c:477

Thread T11 created by T0 here:
    #0 0x7ff299d1aa95 in __interceptor_pthread_create (/lib/x86_64-linux-gnu/libasan.so.6+0x57a95)
    #1 0x4e8dfe2 in ThreadPosix::create_func_posix(void (*)(void*), void*, Thread::Settings const&) drivers/unix/thread_posix.cpp:90
    #2 0xecbac07 in Thread::create(void (*)(void*), void*, Thread::Settings const&) core/os/thread.cpp:51
    #3 0xdc5dccc in AudioEffectRecordInstance::init() servers/audio/effects/audio_effect_record.cpp:122
    #4 0xdc5ff1e in AudioEffectRecord::set_recording_active(bool) servers/audio/effects/audio_effect_record.cpp:196
    #5 0x1ea2e46 in MethodBind1<bool>::call(Object*, Variant const**, int, Variant::CallError&) core/method_bind.gen.inc:775
    #6 0xe76a92d in Object::call(StringName const&, Variant const**, int, Variant::CallError&) core/object.cpp:922
    #7 0xe9e9c47 in Variant::call_ptr(StringName const&, Variant const**, int, Variant*, Variant::CallError&) core/variant_call.cpp:1128
    #8 0x19ed4e7 in GDScriptFunction::call(GDScriptInstance*, Variant const**, int, Variant::CallError&, GDScriptFunction::CallState*) modules/gdscript/gdscript_function.cpp:1091
    #9 0x181dbd9 in GDScriptInstance::call(StringName const&, Variant const**, int, Variant::CallError&) modules/gdscript/gdscript.cpp:1238
    #10 0xe76a49d in Object::call(StringName const&, Variant const**, int, Variant::CallError&) core/object.cpp:901
    #11 0xe77478e in Object::emit_signal(StringName const&, Variant const**, int) core/object.cpp:1249
    #12 0xe7767c4 in Object::emit_signal(StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) core/object.cpp:1306
    #13 0x975daff in BaseButton::_pressed() scene/gui/base_button.cpp:135
    #14 0x9761911 in BaseButton::on_action_event(Ref<InputEvent>) scene/gui/base_button.cpp:169
    #15 0x975a435 in BaseButton::_gui_input(Ref<InputEvent>) scene/gui/base_button.cpp:64
    #16 0x64eaf72 in MethodBind1<Ref<InputEvent> >::call(Object*, Variant const**, int, Variant::CallError&) core/method_bind.gen.inc:775
    #17 0xe766556 in Object::call_multilevel(StringName const&, Variant const**, int) core/object.cpp:764
    #18 0xe769652 in Object::call_multilevel(StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) core/object.cpp:864
    #19 0x965c68e in Viewport::_gui_call_input(Control*, Ref<InputEvent> const&) scene/main/viewport.cpp:1669
    #20 0x966bd1f in Viewport::_gui_input_event(Ref<InputEvent>) scene/main/viewport.cpp:2049
    #21 0x968fd4c in Viewport::input(Ref<InputEvent> const&) scene/main/viewport.cpp:2825
    #22 0x96500f1 in Viewport::_vp_input(Ref<InputEvent> const&) scene/main/viewport.cpp:1446
    #23 0x2343222 in MethodBind1<Ref<InputEvent> const&>::call(Object*, Variant const**, int, Variant::CallError&) core/method_bind.gen.inc:775
    #24 0xe76a92d in Object::call(StringName const&, Variant const**, int, Variant::CallError&) core/object.cpp:922
    #25 0xe769083 in Object::call(StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) core/object.cpp:848
    #26 0x953cfd1 in SceneTree::call_group_flags(unsigned int, StringName const&, StringName const&, Variant const&, Variant const&, Variant const&, Variant const&, Variant const&) scene/main/scene_tree.cpp:275
    #27 0x954247b in SceneTree::input_event(Ref<InputEvent> const&) scene/main/scene_tree.cpp:431
    #28 0x14967e7 in InputDefault::_parse_input_event_impl(Ref<InputEvent> const&, bool) main/input_default.cpp:442
    #29 0x148bf3d in InputDefault::parse_input_event(Ref<InputEvent> const&) main/input_default.cpp:259
    #30 0x149eebf in InputDefault::flush_accumulated_events() main/input_default.cpp:678
    #31 0x14184ac in OS_X11::process_xevents() platform/x11/os_x11.cpp:2792
    #32 0x142c6af in OS_X11::run() platform/x11/os_x11.cpp:3392
    #33 0x139eb56 in main platform/x11/godot_x11.cpp:56
    #34 0x7ff2988ae0b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)