Crash when using mscore from the command line (without GUI)

Issue type

Crash or freeze

Description with steps to reproduce

Whenever I run mscore from the command line without the graphical interface (e.g. to export parts or PDF), the application crashes right before ending due to an uncaught exception:

libc++abi: terminating due to uncaught exception of type std::__1::system_error: mutex lock failed: Invalid argument

Specifically, it seems related to the audio engine, according to my debugger it's taking place in:

kors::async::ChannelImpl<muse::audio::AudioOutputParams>::~ChannelImpl(this=0x0000000c8ed55818) at channelimpl.h:555:42

This happens right at the program's end, so whatever you wanted to generate has been successfully generated already, but it's still a crash nonetheless.

Example command to reproduce:

1. mscore score.mscx -o score.pdf

Actual: successfully generates the PDF but then crashes
Expected: generates the PDF and closes gracefully

Supporting files, videos and screenshots

In which versions of MuseScore Studio is this issue present?

4.7.0 - 4.7.5

Regression

Yes, this used to work in a previous version of MuseScore 4.x

Operating system

macOS 26.5

Additional context

Full backtrace:

* thread #1, name = 'main', queue = 'com.apple.main-thread', stop reason = signal SIGABRT
    * frame #0: 0x0000000182e5a5e8 libsystem_kernel.dylib`__pthread_kill + 8
      frame #1: 0x0000000182e958d8 libsystem_pthread.dylib`pthread_kill + 296
      frame #2: 0x0000000182d9c644 libsystem_c.dylib`abort + 148
      frame #3: 0x0000000182e4c72c libc++abi.dylib`__abort_message + 132
      frame #4: 0x0000000182e39570 libc++abi.dylib`demangling_terminate_handler() + 272
      frame #5: 0x0000000182a548a4 libobjc.A.dylib`_objc_terminate() + 172
      frame #6: 0x0000000182e4975c libc++abi.dylib`std::__terminate(void (*)()) + 16
      frame #7: 0x0000000182e49710 libc++abi.dylib`std::terminate() + 108
      frame #8: 0x000000010000a018 mscore`__clang_call_terminate + 16
      frame #9: 0x0000000100b636e4 mscore`kors::async::ChannelImpl<muse::audio::AudioOutputParams>::~ChannelImpl(this=0x0000000c8ed55818) at channelimpl.h:555:42
      frame #10: 0x0000000100b60880 mscore`kors::async::ChannelImpl<muse::audio::AudioOutputParams>::~ChannelImpl(this=0x0000000c8ed55818) at channelimpl.h:554:5
      frame #11: 0x0000000100b69a94 mscore`kors::async::Channel<muse::audio::AudioOutputParams>::Data::~Data(this=0x0000000c8ed55818) at channel.h:43:12
      frame #12: 0x0000000100b69a5c mscore`kors::async::Channel<muse::audio::AudioOutputParams>::Data::~Data(this=0x0000000c8ed55818) at channel.h:43:12
      frame #13: 0x0000000100b69a34 mscore`std::__1::allocator<kors::async::Channel<muse::audio::AudioOutputParams>::Data>::destroy[abi:nqe210106](this=0x000000016fdfe577, __p=0x0000000c8ed55818) at allocator.h:156:87
      frame #14: 0x0000000100b69a0c mscore`void std::__1::allocator_traits<std::__1::allocator<kors::async::Channel<muse::audio::AudioOutputParams>::Data>>::destroy[abi:nqe210106]<kors::async::Channel<muse::audio::AudioOutputParams>::Data, 0>(__a=0x000000016fdfe577, __p=0x0000000c8ed55818) at allocator_traits.h:308:9
      frame #19: 0x0000000100b1f7d0 mscore`std::__1::shared_ptr<kors::async::Channel<muse::audio::AudioOutputParams>::Data>::~shared_ptr[abi:nqe210106](this=0x0000000c8fa95fc0) at shared_ptr.h:561:17
      frame #20: 0x0000000100b1f788 mscore`std::__1::shared_ptr<kors::async::Channel<muse::audio::AudioOutputParams>::Data>::~shared_ptr[abi:nqe210106](this=0x0000000c8fa95fc0) at shared_ptr.h:559:39
      frame #21: 0x0000000100b1f75c mscore`kors::async::Channel<muse::audio::AudioOutputParams>::~Channel(this=0x0000000c8fa95fc0) at channel.h:69:24
      frame #22: 0x0000000100b1f318 mscore`kors::async::Channel<muse::audio::AudioOutputParams>::~Channel(this=0x0000000c8fa95fc0) at channel.h:69:24
      frame #23: 0x0000000100ee8a68 mscore`muse::audio::engine::EnginePlayback::~EnginePlayback(this=0x0000000c8fa95e18) at engineplayback.h:42:7
      frame #24: 0x0000000100ee0f10 mscore`muse::audio::engine::EnginePlayback::~EnginePlayback(this=0x0000000c8fa95e18) at engineplayback.h:42:7
      frame #25: 0x0000000100eed9a0 mscore`std::__1::allocator<muse::audio::engine::EnginePlayback>::destroy[abi:nqe210106](this=0x000000016fdfe727, __p=0x0000000c8fa95e18) at allocator.h:156:87
      frame #26: 0x0000000100eed970 mscore`void std::__1::allocator_traits<std::__1::allocator<muse::audio::engine::EnginePlayback>>::destroy[abi:nqe210106]<muse::audio::engine::EnginePlayback, 0>(__a=0x000000016fdfe727, __p=0x0000000c8fa95e18) at allocator_traits.h:308:9
      frame #31: 0x0000000100ee9948 mscore`std::__1::shared_ptr<muse::audio::engine::EnginePlayback>::~shared_ptr[abi:nqe210106](this=0x0000000c8f99dd90) at shared_ptr.h:561:17
      frame #32: 0x0000000100ec3fdc mscore`std::__1::shared_ptr<muse::audio::engine::EnginePlayback>::~shared_ptr[abi:nqe210106](this=0x0000000c8f99dd90) at shared_ptr.h:559:39
      frame #33: 0x0000000100ee947c mscore`muse::audio::engine::EngineController::~EngineController(this=0x0000000c8f99dd18) at enginecontroller.h:51:7
      frame #34: 0x0000000100ee0fd4 mscore`muse::audio::engine::EngineController::~EngineController(this=0x0000000c8f99dd18) at enginecontroller.h:51:7
      frame #35: 0x0000000100b980b4 mscore`std::__1::allocator<muse::audio::engine::EngineController>::destroy[abi:nqe210106](this=0x000000016fdfe897, __p=0x0000000c8f99dd18) at allocator.h:156:87
      frame #36: 0x0000000100b98084 mscore`void std::__1::allocator_traits<std::__1::allocator<muse::audio::engine::EngineController>>::destroy[abi:nqe210106]<muse::audio::engine::EngineController, 0>(__a=0x000000016fdfe897, __p=0x0000000c8f99dd18) at allocator_traits.h:308:9
      frame #41: 0x0000000100b97748 mscore`std::__1::shared_ptr<muse::audio::engine::EngineController>::~shared_ptr[abi:nqe210106](this=0x0000000c8ee03960) at shared_ptr.h:561:17
      frame #42: 0x0000000100b09730 mscore`std::__1::shared_ptr<muse::audio::engine::EngineController>::~shared_ptr[abi:nqe210106](this=0x0000000c8ee03960) at shared_ptr.h:559:39
      frame #43: 0x0000000100b2a21c mscore`muse::audio::StartAudioController::~StartAudioController(this=0x0000000c8ee03818) at startaudiocontroller.h:42:7
      frame #44: 0x0000000100b16170 mscore`muse::audio::StartAudioController::~StartAudioController(this=0x0000000c8ee03818) at startaudiocontroller.h:42:7
      frame #45: 0x0000000100b851d0 mscore`std::__1::allocator<muse::audio::StartAudioController>::destroy[abi:nqe210106](this=0x000000016fdfea07, __p=0x0000000c8ee03818) at allocator.h:156:87
      frame #46: 0x0000000100b851a0 mscore`void std::__1::allocator_traits<std::__1::allocator<muse::audio::StartAudioController>>::destroy[abi:nqe210106]<muse::audio::StartAudioController, 0>(__a=0x000000016fdfea07, __p=0x0000000c8ee03818) at allocator_traits.h:308:9
      frame #51: 0x000000010004ba48 mscore`std::__1::shared_ptr<kors::modularity::IModuleInterface>::~shared_ptr[abi:nqe210106](this=0x0000000c8f1536b0) at shared_ptr.h:561:17
      frame #52: 0x000000010004b108 mscore`std::__1::shared_ptr<kors::modularity::IModuleInterface>::~shared_ptr[abi:nqe210106](this=0x0000000c8f1536b0) at shared_ptr.h:559:39
      frame #53: 0x00000001000b173c mscore`kors::modularity::ModulesIoC::Service::~Service(this=0x0000000c8f153690) at modulesioc.h:221:12
      frame #54: 0x00000001000b0810 mscore`kors::modularity::ModulesIoC::Service::~Service(this=0x0000000c8f153690) at modulesioc.h:221:12
      frame #55: 0x00000001000b1428 mscore`std::__1::pair<std::__1::basic_string_view<char, std::__1::char_traits<char>> const, kors::modularity::ModulesIoC::Service>::~pair(this=0x0000000c8f153680) at pair.h:90:8
      frame #56: 0x00000001000b13f8 mscore`std::__1::pair<std::__1::basic_string_view<char, std::__1::char_traits<char>> const, kors::modularity::ModulesIoC::Service>::~pair(this=0x0000000c8f153680) at pair.h:90:8
      frame #58: 0x00000001000b1378 mscore`void std::__1::allocator_traits<std::__1::allocator<std::__1::__tree_node<std::__1::__value_type<std::__1::basic_string_view<char, std::__1::char_traits<char>>, kors::modularity::ModulesIoC::Service>, void*>>>::destroy[abi:nqe210106]<std::__1::pair<std::__1::basic_string_view<char, std::__1::char_traits<char>> const, kors::modularity::ModulesIoC::Service>, 0>((null)=0x00000001075b4e70, __p=0x0000000c8f153680) at allocator_traits.h:313:5
      frame #63: 0x00000001048a2948 mscore`std::__1::map<std::__1::basic_string_view<char, std::__1::char_traits<char>>, kors::modularity::ModulesIoC::Service, std::__1::less<std::__1::basic_string_view<char, std::__1::char_traits<char>>>, std::__1::allocator<std::__1::pair<std::__1::basic_string_view<char, std::__1::char_traits<char>> const, kors::modularity::ModulesIoC::Service>>>::~map[abi:nqe210106](this=size=98) at map:1014:117
      frame #64: 0x00000001048a291c mscore`std::__1::map<std::__1::basic_string_view<char, std::__1::char_traits<char>>, kors::modularity::ModulesIoC::Service, std::__1::less<std::__1::basic_string_view<char, std::__1::char_traits<char>>>, std::__1::allocator<std::__1::pair<std::__1::basic_string_view<char, std::__1::char_traits<char>> const, kors::modularity::ModulesIoC::Service>>>::~map[abi:nqe210106](this=size=98) at map:1014:32
      frame #65: 0x00000001048a28f0 mscore`kors::modularity::ModulesIoC::~ModulesIoC(this=0x00000001075b4e68) at modulesioc.h:36:7
      frame #66: 0x0000000104891ddc mscore`kors::modularity::ModulesIoC::~ModulesIoC(this=0x00000001075b4e68) at modulesioc.h:36:7
      frame #67: 0x0000000182d4b7f4 libsystem_c.dylib`__cxa_finalize_ranges + 416
      frame #68: 0x0000000182d4b5f4 libsystem_c.dylib`exit + 44
      frame #69: 0x0000000182aa02e4 libdyld.dylib`dyld4::LibSystemHelpers::exit(int) const + 20
      frame #70: 0x0000000182ad7f0c dyld`dyld4::LibSystemHelpersWrapper::exit(int) const + 164
      frame #71: 0x0000000182ad7e30 dyld`start + 7040

Checklist

• This report follows the guidelines for reporting bugs and issues
• I have verified that this issue has not been logged before, by searching the issue tracker for similar issues
• I have attached all requested files and information to this report
• I have attempted to identify the root problem as concisely as possible, and have used minimal reproducible examples where possible