Yabai: Yabai SA crashes Dock (possibly)

[zoenglinghou]

It seems that yabai's scripting addition crashed my Dock. It cannot be restarted, nor is it repaired through disabling yabai, uninstalling the SA and reinstalling the OS with internet recovery.

When running
/System/Library/CoreServices/Dock.app/Contents/MacOS/Dock
in terminal, the following is printed:

2019-09-21 23:21:57.233 Dock[1294:12918] -[__NSCFString unsignedIntValue]: unrecognized selector sent to instance 0x7fda0948da00
2019-09-21 23:21:57.233 Dock[1294:12918] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString unsignedIntValue]: unrecognized selector sent to instance 0x7fda0948da00'
*** First throw call stack:
(
    0   CoreFoundation                      0x00007fff521812fd __exceptionPreprocess + 256
    1   libobjc.A.dylib                     0x00007fff7c851a17 objc_exception_throw + 48
    2   CoreFoundation                      0x00007fff521fb106 -[NSObject(NSObject) __retain_OA] + 0
    3   CoreFoundation                      0x00007fff5212318f ___forwarding___ + 1485
    4   CoreFoundation                      0x00007fff52122b38 _CF_forwarding_prep_0 + 120
    5   Dock                                0x000000010e3e83fe Dock + 50174
    6   Dock                                0x000000010e3e7f1f Dock + 48927
    7   Dock                                0x000000010e3e79b1 Dock + 47537
    8   Dock                                0x000000010e3e536d Dock + 37741
    9   Dock                                0x000000010e3e3b9d Dock + 31645
    10  Dock                                0x000000010e56acb1 Dock + 1633457
    11  Dock                                0x000000010e56bb1e Dock + 1637150
    12  libswiftObjectiveC.dylib            0x00007fff7dd2ef4f $s10ObjectiveC15autoreleasepool8invokingxxyKXE_tKlF + 47
    13  Dock                                0x000000010e3e1736 Dock + 22326
    14  libdyld.dylib                       0x00007fff7e01f3d5 start + 1
    15  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
[1]    1294 abort      /System/Library/CoreServices/Dock.app/Contents/MacOS/Dock

I am running macOS 10.14.6 on a mid 2015 15" RMBP (without dock, wallpaper, or launchpad etc.) rightnow

I really hope it is not yabai's fault, otherwise I made a fool of myself for not foreseeing the risk thereof (I did run chunkwm for a while and loved it).

Any help is greatly appreciated.

[koekeishiya]

It cannot be restarted, nor is it repaired through disabling yabai, uninstalling the SA and reinstalling the OS with internet recovery.

yabai does nothing to modify the on-disk binary of the Dock or anything thereof. It simply injects code through the scripting-bridge framework into a running instance of the Dock. I have never seen this kind of a crash before. Nothing yabai does should persist through a restart of the Dock, re-log of the current user session, let alone a full OS reinstall.

I don't have any tip for what you can do to further debug your issue.

[zoenglinghou]

@koekeishiya does SIP protects the Dock? Could it be some malware that has tampered with it?

I apologize for getting the discussion out of the scale of yabai

[zoenglinghou]

It seems that the desktoppicture database is corrupted. Can be fixed by

rm ~/Library/Application\ Support/Dock/desktoppicture.db