I’m seeing a repeatable (though somewhat inconsistent) crash when importing and manipulating an MP3 alongside other voice tracks.
OS X 10.15.6
Audacity 2.4.2
Steps to reproduce are not always consistent, but here’s what I was doing yesterday. I repeated these steps right now afresh, and it crashes again.
- Import WAV into Audacity (voice recording for podcast).
- Import MP3 audio file.
- Re-arrange tracks, putting MP3 at the top. Time shift voice track to ensure MP3 starts playing first.
- Hit play → Audacity crashes.
At this point I re-open Audacity and recover my project. Hit play → crash. Re-open Audacity and move the playhead further into the track. Hit play and playback is fine. Return playhead to the beginning, hit play → crash.
Concerned that my project was corrupt, I also returned to an earlier version of my files, before I imported the MP3. It works fine. I import the MP3, hit play, everything is fine. Then I drop the gain on the MP3 track to -12 (what I usually do), hit play and Audacity crashes. Reload all the files, leave the gain unchanged once more, and playback is fine. Move the MP3 to the top track, hit play, Audacity crashes.
I saw the exact same kind of behaviours about 2 Audacity versions ago, and the problem just seemed to go away eventually. I’m no expert, but it seems to be some sort of memory violation that is triggered by manipulating tracks, time-shift or gain of imported MP3s. I wonder if there’s a different between sample rates on the files that could also be involved. Does that help at all?
Here’s the first portion of the crash dump I’m getting:
Process: Audacity [11682]
Path: /Applications/Audacity.app/Contents/MacOS/Audacity
Identifier: org.audacityteam.audacity
Version: 2.4.2.0 (2.4.2.0)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Audacity [11682]
User ID: 502
Date/Time: 2020-08-28 11:28:36.142 -0400
OS Version: Mac OS X 10.15.6 (19G2021)
Report Version: 12
Anonymous UUID: B9DC4188-10E6-6BEA-7BFB-925950057A31
Sleep/Wake UUID: F805916B-6C99-4B1F-8484-D07673557082
Time Awake Since Boot: 63000 seconds
Time Since Wake: 1900 seconds
System Integrity Protection: enabled
Crashed Thread: 6
Exception Type: EXC_BAD_ACCESS (SIGABRT)
Exception Codes: KERN_INVALID_ADDRESS at 0x00007f9b00c7d000
Exception Note: EXC_CORPSE_NOTIFY
VM Regions Near 0x7f9b00c7d000:
MALLOC_LARGE 00007f9b00c00000-00007f9b00c7d000 [ 500K] rw-/rwx SM=PRV
-->
MALLOC_LARGE 00007f9b00c9a000-00007f9b00e26000 [ 1584K] rw-/rwx SM=PRV
Application Specific Information:
*** Terminating app due to uncaught exception 'NSGenericException', reason: '-[NSApplication runModalSession:] may only be invoked from the main thread. Behavior on other threads is undefined.'
abort() called
terminating with uncaught exception of type NSException
Application Specific Backtrace 1:
0 CoreFoundation 0x00007fff30c59b57 __exceptionPreprocess + 250
1 libobjc.A.dylib 0x00007fff69aa05bf objc_exception_throw + 48
2 CoreFoundation 0x00007fff30c599b5 +[NSException raise:format:] + 189
3 AppKit 0x00007fff2e6e235d _NSRunModal + 238
4 AppKit 0x00007fff2e2e1320 -[NSApplication runModalSession:] + 241
5 libwx_osx_cocoau_release_core-3.1.3 0x000000010368e470 _ZN14wxGUIEventLoop17DoDispatchTimeoutEm + 64
6 libwx_baseu_release-3.1.3.0.0.dylib 0x0000000103481473 _ZN13wxCFEventLoop15DispatchTimeoutEm + 35
7 libwx_baseu_release-3.1.3.0.0.dylib 0x000000010348154d _ZN13wxCFEventLoop8OSXDoRunEv + 109
8 libwx_osx_cocoau_release_core-3.1.3 0x000000010368eb0d _ZN16wxModalEventLoop8OSXDoRunEv + 189
9 libwx_baseu_release-3.1.3.0.0.dylib 0x000000010348161d _ZN13wxCFEventLoop5DoRunEv + 29
10 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001033e0a15 _ZN15wxEventLoopBase3RunEv + 85
11 libwx_osx_cocoau_release_core-3.1.3 0x00000001035ede29 _ZN8wxDialog9ShowModalEv + 105
12 libwx_osx_cocoau_release_qa-3.1.3.0 0x0000000103e9ecef _ZNK23wxDebugReportPreviewStd4ShowER13wxDebugReport + 47
13 Audacity 0x0000000101a4b9d6 _ZN11CrashReport8GenerateEN13wxDebugReport7ContextE + 1734
14 Audacity 0x00000001019c393e _ZN11AudacityApp16OnFatalExceptionEv + 14
15 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001034cdb7c _ZL20wxFatalSignalHandleri + 28
16 libsystem_platform.dylib 0x00007fff6ae415fd _sigtramp + 29
17 ??? 0x0000000000004007 0x0 + 16391
18 Audacity 0x0000000102377f54 soxr_process + 676
19 Audacity 0x0000000101ba701c _ZN8Resample7ProcessEdPfmbS0_m + 140
20 Audacity 0x0000000101b04ebe _ZN5Mixer16MixVariableRatesEPiR14WaveTrackCacheP11sampleCountPfS0_S0_P8Resample + 478
21 Audacity 0x0000000101b036bb _ZN5Mixer7ProcessEm + 763
22 Audacity 0x00000001019dc604 _ZN7AudioIO11FillBuffersEv + 1652
23 Audacity 0x00000001019dbed1 _ZN11AudioThread5EntryEv + 81
24 Audacity 0x00000001019e09e9 _ZN11AudioThread8callbackEPv + 9
25 libsystem_pthread.dylib 0x00007fff6ae4d109 _pthread_start + 148
26 libsystem_pthread.dylib 0x00007fff6ae48b8b thread_start + 15
Thread 0:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff6ad8c756 __semwait_signal + 10
1 libsystem_c.dylib 0x00007fff6ad0feea nanosleep + 196
2 libsystem_c.dylib 0x00007fff6ad0fde4 usleep + 53
3 Audacity 0x00000001019d71cd AudioIO::StartStream(TransportTracks const&, double, double, AudioIOStartStreamOptions const&) + 3789
4 Audacity 0x0000000101b4dfd7 ProjectAudioManager::PlayPlayRegion(SelectedRegion const&, AudioIOStartStreamOptions const&, PlayMode, bool, bool) + 1959
5 Audacity 0x0000000101b50363 ProjectAudioManager::PlayCurrentRegion(bool, bool) + 323
6 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001034a0e9f wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*) + 415
7 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001034a1bca wxEvtHandler::ProcessEventLocally(wxEvent&) + 90
8 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001034a1ac0 wxEvtHandler::ProcessEvent(wxEvent&) + 96
9 libwx_osx_cocoau_release_core-3.1.3.0.0.dylib 0x00000001037b6ee2 wxWindowBase::TryAfter(wxEvent&) + 146
10 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001034a1fcc wxEvtHandler::SafelyProcessEvent(wxEvent&) + 12
11 Audacity 0x000000010222a156 AButton::Click() + 166
12 Audacity 0x0000000102227f19 AButton::OnMouseEvent(wxMouseEvent&) + 521
13 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001034a0e9f wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*) + 415
14 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001034a1bca wxEvtHandler::ProcessEventLocally(wxEvent&) + 90
15 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001034a1ac0 wxEvtHandler::ProcessEvent(wxEvent&) + 96
16 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001034a1fcc wxEvtHandler::SafelyProcessEvent(wxEvent&) + 12
17 libwx_osx_cocoau_release_core-3.1.3.0.0.dylib 0x00000001036b3f49 wxWidgetCocoaImpl::DoHandleMouseEvent(NSEvent*) + 89
18 libwx_osx_cocoau_release_core-3.1.3.0.0.dylib 0x00000001036adac7 wxWidgetCocoaImpl::mouseEvent(NSEvent*, NSView*, void*) + 167
19 com.apple.AppKit 0x00007fff2dff3e9f -[NSWindow(NSEventRouting) _reallySendEvent:isDelayedEvent:] + 2738
20 com.apple.AppKit 0x00007fff2dff31c9 -[NSWindow(NSEventRouting) sendEvent:] + 349
21 libwx_osx_cocoau_release_core-3.1.3.0.0.dylib 0x000000010369884b -[wxNSWindow sendEvent:] + 123
22 com.apple.AppKit 0x00007fff2dff1554 -[NSApplication(NSEvent) sendEvent:] + 352
23 libwx_osx_cocoau_release_core-3.1.3.0.0.dylib 0x00000001035eb402 -[wxNSApplication sendEvent:] + 98
24 com.apple.AppKit 0x00007fff2de3e5bf -[NSApplication run] + 707
25 libwx_osx_cocoau_release_core-3.1.3.0.0.dylib 0x000000010368e68a wxGUIEventLoop::OSXDoRun() + 154
26 libwx_baseu_release-3.1.3.0.0.dylib 0x000000010348161d wxCFEventLoop::DoRun() + 29
27 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001033e0a15 wxEventLoopBase::Run() + 85
28 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001033b8724 wxAppConsoleBase::MainLoop() + 116
29 libwx_osx_cocoau_release_core-3.1.3.0.0.dylib 0x000000010362bb2a wxApp::OnRun() + 26
30 libwx_baseu_release-3.1.3.0.0.dylib 0x0000000103410fc8 wxEntry(int&, wchar_t**) + 56
31 Audacity 0x00000001019c2394 main + 20
32 Audacity 0x000000010198dcb4 start + 52
Thread 1:: com.apple.NSEventThread
0 libsystem_kernel.dylib 0x00007fff6ad89dfa mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff6ad8a170 mach_msg + 60
2 com.apple.CoreFoundation 0x00007fff30bddef5 __CFRunLoopServiceMachPort + 247
3 com.apple.CoreFoundation 0x00007fff30bdc9c2 __CFRunLoopRun + 1319
4 com.apple.CoreFoundation 0x00007fff30bdbe3e CFRunLoopRunSpecific + 462
5 com.apple.AppKit 0x00007fff2dfef954 _NSEventThread + 132
6 libsystem_pthread.dylib 0x00007fff6ae4d109 _pthread_start + 148
7 libsystem_pthread.dylib 0x00007fff6ae48b8b thread_start + 15
Thread 2:: com.apple.CFSocket.private
0 libsystem_kernel.dylib 0x00007fff6ad920fe __select + 10
1 com.apple.CoreFoundation 0x00007fff30c06c53 __CFSocketManager + 641
2 libsystem_pthread.dylib 0x00007fff6ae4d109 _pthread_start + 148
3 libsystem_pthread.dylib 0x00007fff6ae48b8b thread_start + 15
Thread 3:: AMCP Logging Spool
0 libsystem_kernel.dylib 0x00007fff6ad89e36 semaphore_wait_trap + 10
1 com.apple.audio.caulk 0x00007fff6481cb16 caulk::mach::semaphore::wait() + 16
2 com.apple.audio.caulk 0x00007fff6481c9b2 caulk::semaphore::timed_wait(double) + 106
3 com.apple.audio.caulk 0x00007fff6481c7c4 caulk::concurrent::details::worker_thread::run() + 30
4 com.apple.audio.caulk 0x00007fff6481c1e4 void* caulk::thread_proxy<std::__1::tuple<caulk::thread::attributes, void (caulk::concurrent::details::worker_thread::*)(), std::__1::tuple<caulk::concurrent::details::worker_thread*> > >(void*) + 45
5 libsystem_pthread.dylib 0x00007fff6ae4d109 _pthread_start + 148
6 libsystem_pthread.dylib 0x00007fff6ae48b8b thread_start + 15
Thread 4:
0 libsystem_kernel.dylib 0x00007fff6ad89e36 semaphore_wait_trap + 10
1 com.apple.audio.caulk 0x00007fff6481cb16 caulk::mach::semaphore::wait() + 16
2 com.apple.audio.caulk 0x00007fff6481c9b2 caulk::semaphore::timed_wait(double) + 106
3 com.apple.audio.caulk 0x00007fff6481c7c4 caulk::concurrent::details::worker_thread::run() + 30
4 com.apple.audio.caulk 0x00007fff6481c1e4 void* caulk::thread_proxy<std::__1::tuple<caulk::thread::attributes, void (caulk::concurrent::details::worker_thread::*)(), std::__1::tuple<caulk::concurrent::details::worker_thread*> > >(void*) + 45
5 libsystem_pthread.dylib 0x00007fff6ae4d109 _pthread_start + 148
6 libsystem_pthread.dylib 0x00007fff6ae48b8b thread_start + 15
Thread 5:
0 libsystem_kernel.dylib 0x00007fff6ad89dfa mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff6ad8a170 mach_msg + 60
2 com.apple.audio.midi.CoreMIDI 0x00007fff31a35635 XServerMachPort::ReceiveMessage(int&, void*, int&) + 95
3 com.apple.audio.midi.CoreMIDI 0x00007fff31a52fee MIDIProcess::RunMIDIInThread() + 104
4 com.apple.audio.midi.CoreMIDI 0x00007fff31a51d5e XThread::RunHelper(void*) + 10
5 com.apple.audio.midi.CoreMIDI 0x00007fff31a35331 CAPThread::Entry(CAPThread*) + 77
6 libsystem_pthread.dylib 0x00007fff6ae4d109 _pthread_start + 148
7 libsystem_pthread.dylib 0x00007fff6ae48b8b thread_start + 15
Thread 6 Crashed:
0 libsystem_kernel.dylib 0x00007fff6ad9033a __pthread_kill + 10
1 libsystem_pthread.dylib 0x00007fff6ae4ce60 pthread_kill + 430
2 libsystem_c.dylib 0x00007fff6ad17808 abort + 120
3 libc++abi.dylib 0x00007fff67f76458 abort_message + 231
4 libc++abi.dylib 0x00007fff67f678bf demangling_terminate_handler() + 262
5 libobjc.A.dylib 0x00007fff69aa25a9 _objc_terminate() + 96
6 libc++abi.dylib 0x00007fff67f75887 std::__terminate(void (*)()) + 8
7 libc++abi.dylib 0x00007fff67f78387 __cxa_rethrow + 99
8 libwx_baseu_release-3.1.3.0.0.dylib 0x0000000103481677 wxCFEventLoop::DoRun() + 119
9 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001033e0a15 wxEventLoopBase::Run() + 85
10 libwx_osx_cocoau_release_core-3.1.3.0.0.dylib 0x00000001035ede29 wxDialog::ShowModal() + 105
11 libwx_osx_cocoau_release_qa-3.1.3.0.0.dylib 0x0000000103e9ecef wxDebugReportPreviewStd::Show(wxDebugReport&) const + 47
12 Audacity 0x0000000101a4b9d6 CrashReport::Generate(wxDebugReport::Context) + 1734
13 Audacity 0x00000001019c393e AudacityApp::OnFatalException() + 14
14 libwx_baseu_release-3.1.3.0.0.dylib 0x00000001034cdb7c wxFatalSignalHandler(int) + 28
15 libsystem_platform.dylib 0x00007fff6ae415fd _sigtramp + 29
16 ??? 0x0000000000004007 0 + 16391
17 Audacity 0x0000000102377f54 soxr_process + 676
18 Audacity 0x0000000101ba701c Resample::Process(double, float*, unsigned long, bool, float*, unsigned long) + 140
19 Audacity 0x0000000101b04ebe Mixer::MixVariableRates(int*, WaveTrackCache&, sampleCount*, float*, int*, int*, Resample*) + 478
20 Audacity 0x0000000101b036bb Mixer::Process(unsigned long) + 763
21 Audacity 0x00000001019dc604 AudioIO::FillBuffers() + 1652
22 Audacity 0x00000001019dbed1 AudioThread::Entry() + 81
23 Audacity 0x00000001019e09e9 AudioThread::callback(void*) + 9
24 libsystem_pthread.dylib 0x00007fff6ae4d109 _pthread_start + 148
25 libsystem_pthread.dylib 0x00007fff6ae48b8b thread_start + 15
Thread 7:
0 libsystem_kernel.dylib 0x00007fff6ad8c756 __semwait_signal + 10
1 libsystem_c.dylib 0x00007fff6ad0feea nanosleep + 196
2 Audacity 0x00000001019dd59c MidiThread::Entry() + 76
3 Audacity 0x00000001019e09e9 AudioThread::callback(void*) + 9
4 libsystem_pthread.dylib 0x00007fff6ae4d109 _pthread_start + 148
5 libsystem_pthread.dylib 0x00007fff6ae48b8b thread_start + 15
Thread 8:
0 libsystem_pthread.dylib 0x00007fff6ae48b68 start_wqthread + 0
Thread 9:
0 libsystem_pthread.dylib 0x00007fff6ae48b68 start_wqthread + 0
Thread 10:
0 libsystem_kernel.dylib 0x00007fff6ad89e4e semaphore_timedwait_trap + 10
1 libdispatch.dylib 0x00007fff6abefb6b _dispatch_sema4_timedwait + 76
2 libdispatch.dylib 0x00007fff6abeff97 _dispatch_semaphore_wait_slow + 58
3 libdispatch.dylib 0x00007fff6abfd795 _dispatch_worker_thread + 284
4 libsystem_pthread.dylib 0x00007fff6ae4d109 _pthread_start + 148
5 libsystem_pthread.dylib 0x00007fff6ae48b8b thread_start + 15
Thread 6 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x000070000b64a000 rcx: 0x000070000b6480e8 rdx: 0x0000000000000000
rdi: 0x000000000001c50b rsi: 0x0000000000000006 rbp: 0x000070000b648110 rsp: 0x000070000b6480e8
r8: 0x000070000b647fb0 r9: 0x000070000b648180 r10: 0x000070000b64a000 r11: 0x0000000000000246
r12: 0x000000000001c50b r13: 0x0000003000000008 r14: 0x0000000000000006 r15: 0x0000000000000016
rip: 0x00007fff6ad9033a rfl: 0x0000000000000246 cr2: 0x00007f9afbb75208
Logical CPU: 0
Error Code: 0x02000148
Trap Number: 133