MacOS - Mixxx Crashes when opening Rekordbox USB #10608
Description
Reported by: snowyoneill
Date: 2021-11-23T22:28:21Z
Status: New
Importance: Undecided
Launchpad Issue: lp1952005
Attachments: [Rekordbox PDB which crashes under MacOS](https://bugs.launchpad.net/bugs/1952005/+attachment/5542882/+files/Rekordbox PDB which crashes under MacOS)
Mixxx 2.3.1
MacOS Big Sur
Steps to reproduce the problem:
- In library, click on Rekordbox. An arrow appears to expand
- Click arrow, the USB drive shows
- Click USB drive, Mixxx either hangs or crashes
Expected behaviour:
- Show the contents of the Recordbox library
Information logs
- Rekordbox export db
I've tested this on 3 different Mac Books ( Pro x2 + Air, I've also tried 2 different USBs with different libraries ) - if i test under --developer mode it throws a seg fault. These USBs load fine under Linux and Windows versions ( tested using 2.3.1 across all platforms ).
If i run Mixxx in --developer mode i get these logs
Mixxx Crashes
```
Debug [Main]: RekordboxFeature::activate()
Debug [Main]: RekordboxFeature::activateChild "ELSCANO" playlist: "/Volumes/ELSCANO" doParseDeviceDB: true
Debug [Main]: Parse Rekordbox Device DB: "/Volumes/ELSCANO"
mixxx(91893,0x7000042b7000) malloc: *** error for object 0x7fd7082ab240: pointer being freed was not allocated
mixxx(91893,0x7000042b7000) malloc: *** set a breakpoint in malloc_error_break to debug
zsh: abort /Applications/mixxx.app/Contents/MacOS/mixxx --developer
```
Mixxx Hangs
```
Debug [Main]: RekordboxFeature::activate()
Debug [Main]: RekordboxFeature::activateChild "ELSCANO" playlist: "/Volumes/ELSCANO" doParseDeviceDB: true
Debug [Main]: Parse Rekordbox Device DB: "/Volumes/ELSCANO"
Debug [Thread (pooled)]: parseDeviceDB device: "ELSCANO" devicePath: "/Volumes/ELSCANO"
Debug [Thread (pooled)]: DbConnection - Opening database connection "MIXXX-11" QSqlDatabase(driver="QSQLITE", database="file:///Users/<user>/Library/Containers/org.mixxx.mixxx/Data/Library/Application Support/Mixxx/mixxxdb.sqlite", host="", port=-1, user="mixxx", open=false)
Info [Thread (pooled)]: DbConnectionPool - Cloned thread-local database connection "MIXXX-11" QSqlDatabase(driver="QSQLITE", database="file:///Users/<user>/Library/Containers/org.mixxx.mixxx/Data/Library/Application Support/Mixxx/mixxxdb.sqlite", host="", port=-1, user="mixxx", open=true)
Debug [Thread (pooled)]: DbConnectionPooled - Found thread-local database connection "MIXXX-11" QSqlDatabase(driver="QSQLITE", database="file:///Users/<user>/Library/Containers/org.mixxx.mixxx/Data/Library/Application Support/Mixxx/mixxxdb.sqlite", host="", port=-1, user="mixxx", open=true)
2021-11-23 13:34:27.649 mixxx[92132:7866935] WARNING: NSWindow drag regions should only be invalidated on the Main Thread! This will throw an exception in the future. Called from (
0 AppKit 0x00007fff22e8a47f -[NSWindow(NSWindow_Theme) _postWindowNeedsToResetDragMarginsUnlessPostingDisabled] + 352
1 AppKit 0x00007fff22e75121 -[NSWindow _initContent:styleMask:backing:defer:contentView:] + 1375
2 AppKit 0x00007fff23037377 -[NSPanel _initContent:styleMask:backing:defer:contentView:] + 50
3 AppKit 0x00007fff22e74bbb -[NSWindow initWithContentRect:styleMask:backing:defer:] + 42
4 AppKit 0x00007fff2303732c -[NSPanel initWithContentRect:styleMask:backing:defer:] + 64
5 AppKit 0x00007fff2317f1f4 -[NSWindow initWithContentRect:styleMask:backing:defer:screen:] + 52
6 libqcocoa.dylib 0x0000000111a96a0b -[QNSPanel initWithContentRect:styleMask:backing:defer:screen:platformWindow:] + 219
7 libqcocoa.dylib 0x0000000111a83b6c _ZN12QCocoaWindow14createNSWindowEb + 1116
8 libqcocoa.dylib 0x0000000111a7d670 _ZN12QCocoaWindow22recreateWindowIfNeededEv + 1264
9 libqcocoa.dylib 0x0000000111a7d0fb _ZN12QCocoaWindow10initializeEv + 315
10 QtGui 0x000000010e60db0c _ZN14QWindowPrivate6createEby + 140
11 QtWidgets 0x000000010de096c1 _ZN14QWidgetPrivate10create_sysEybb + 1217
12 QtWidgets 0x000000010de083a6 _ZN7QWidget6createEybb + 374
13 QtWidgets 0x000000010de1bac3 _ZN14QWidgetPrivate10setVisibleEb + 195
14 QtWidgets 0x000000010dfe567d _ZN7QDialog10setVisibleEb + 125
15 QtWidgets 0x000000010dfe4ec3 _ZN7QDialog4execEv + 243
16 QtWidgets 0x000000010e022b92 _ZL17showNewMessageBoxP7QWidgetN11QMessageBox4IconERK7QStringS5_6QFlagsINS1_14StandardButtonEES7_ + 354
17 mixxx 0x000000010cae7fdf _ZN7Sandbox12askForAccessERK7QString + 367
)
Warning [Thread (pooled)]: QPainter::begin: A paint device can only be painted by one painter at a time.
Warning [Thread (pooled)]: QPainter::setCompositionMode: Painter not active
Warning [Thread (pooled)]: QBackingStore::endPaint() called with active painter on backingstore paint device
```
I will try to get a back trace to aid in debugging but i don't have access to a Mac for testing right now.